I. Overview

Obligations and Contracts is one of the core subjects under Philippine Civil Law. It is primarily governed by the Civil Code of the Philippines, especially Book IV, which covers obligations, contracts, sales, agency, partnership, credit transactions, and other related legal relations.

At its center are two basic questions:

What is a legal obligation?
How are obligations created, performed, modified, breached, and extinguished?

An obligation is a juridical necessity to give, to do, or not to do. A contract is a meeting of minds between two persons whereby one binds himself, with respect to the other, to give something or to render some service.

In simple terms:

Obligations concern enforceable duties.
Contracts are one of the main sources of obligations.
Not every moral duty is a legal obligation.
Not every agreement is a valid contract.
Not every breach leads to the same remedy.

This article provides a comprehensive outline of obligations and contracts under Philippine civil law.

II. Obligations in General

A. Definition of Obligation

An obligation is a juridical necessity to give, to do, or not to do.

It is juridical because it is enforceable by law. If a person fails to comply, the other party may seek legal remedies.

Examples:

A seller must deliver the thing sold.
A borrower must repay a loan.
A contractor must complete agreed work.
A lessee must pay rent.
A person who caused damage through negligence must indemnify the injured party.
A person bound by a non-compete clause may be required not to engage in prohibited conduct, if the clause is valid.

B. Elements of an Obligation

An obligation generally has four elements:

Element	Meaning
Active subject	Creditor or obligee; the person entitled to demand performance
Passive subject	Debtor or obligor; the person bound to perform
Object or prestation	The conduct required: to give, to do, or not to do
Juridical tie	The legal bond connecting the parties

Example:

If A borrows ₱100,000 from B, B is the creditor, A is the debtor, payment of ₱100,000 is the prestation, and the loan agreement is the juridical tie.

III. Sources of Obligations

Obligations arise from:

Law
Contracts
Quasi-contracts
Acts or omissions punished by law
Quasi-delicts

These are the recognized sources of civil obligations.

A. Obligations Arising from Law

Obligations arising from law are not presumed. They must be expressly or clearly provided by statute.

Examples:

Duty to support certain family members;
Tax obligations;
Employer obligations under labor law;
Civil liability arising from law;
Obligations of co-owners;
Duties of guardians, administrators, and trustees.

A person cannot be compelled to perform a legal obligation unless the law imposes it.

B. Obligations Arising from Contracts

Contracts are a major source of obligations.

Examples:

Sale;
Lease;
Loan;
Mortgage;
Agency;
Construction agreement;
Employment contract;
Service agreement;
Insurance contract;
Partnership agreement.

Contractual obligations have the force of law between the parties and must be complied with in good faith.

C. Obligations Arising from Quasi-Contracts

Quasi-contracts are lawful, voluntary, and unilateral acts that create obligations to prevent unjust enrichment.

Common examples:

Negotiorum gestio — voluntary management of another’s abandoned or neglected affairs without authority;
Solutio indebiti — payment by mistake when no payment was due.

Example of solutio indebiti:

A mistakenly sends ₱50,000 to B’s account. B must return it because B has no right to keep money received by mistake.

D. Obligations Arising from Crimes

A person criminally liable is also generally civilly liable.

Civil liability arising from crime may include:

Restitution;
Reparation of damage;
Indemnification for consequential damages.

Example:

If a person commits theft, they may be criminally punished and also ordered to return the property or pay its value.

E. Obligations Arising from Quasi-Delicts

A quasi-delict is a negligent or wrongful act or omission that causes damage to another, when there is no pre-existing contractual relation between the parties concerning the act.

Elements generally include:

Act or omission;
Fault or negligence;
Damage;
Causal connection between fault and damage;
No pre-existing contractual relation governing the same act.

Example:

A driver negligently hits a pedestrian. The driver may be liable for damages based on quasi-delict.

IV. Kinds of Obligations According to Prestation

A. Obligation to Give

An obligation to give requires delivery of a thing.

Examples:

Deliver a car sold;
Deliver a parcel of land;
Deliver goods purchased;
Return borrowed property;
Deliver shares of stock.

Duties of a Debtor Obliged to Give a Determinate Thing

If the obligation involves a specific thing, the debtor must:

Preserve the thing with proper diligence;
Deliver the thing itself;
Deliver accessions and accessories;
Pay damages in case of breach, fraud, negligence, delay, or contravention of the obligation.

A determinate thing is particularly designated or physically segregated from all others of the same class.

Example:

“The 2020 Toyota Vios with plate number ABC 1234.”

B. Obligation to Do

An obligation to do requires performance of an act or service.

Examples:

Build a house;
Repair a vehicle;
Paint a portrait;
Render professional services;
Deliver accounting work;
Install equipment.

If the obligor fails to do what is required, the creditor may have it done at the obligor’s expense, if legally possible, plus damages.

If personal qualifications are essential, forced performance may not be proper, but damages may be awarded.

C. Obligation Not to Do

An obligation not to do requires abstention from a particular act.

Examples:

Not to build above a certain height;
Not to disclose confidential information;
Not to compete within valid limits;
Not to sublease;
Not to use property for prohibited purposes.

If the obligor does what is forbidden, the act may be undone at the obligor’s expense, if possible, and damages may be awarded.

V. Determinate and Generic Things

A. Determinate Thing

A thing is determinate when it is specifically identified.

Example:

“The condominium unit covered by CCT No. 12345.”

If the thing is lost without fault before delay, the obligation may be extinguished.

B. Generic Thing

A generic thing is identified only by class or kind.

Example:

“100 sacks of rice.”

The loss of a generic thing generally does not extinguish the obligation because genus never perishes. The debtor can still deliver another thing of the same kind.

VI. Diligence Required in Obligations

The debtor must exercise the diligence required by:

Law;
Contract;
Nature of the obligation;
Circumstances of persons, time, and place.

If no specific diligence is required, the standard is generally the diligence of a good father of a family.

Parties may agree on a higher or lower degree of diligence, subject to law, morals, good customs, public order, and public policy.

VII. Breach of Obligations

An obligation may be breached through:

Fraud;
Negligence;
Delay;
Contravention of the tenor of the obligation.

These may give rise to damages.

A. Fraud

Fraud in performance means deliberate or intentional evasion of normal fulfillment of an obligation.

Fraud may not be waived in advance.

Example:

A seller intentionally delivers counterfeit goods while representing them as genuine.

B. Negligence

Negligence is the failure to observe the required diligence.

Example:

A warehouse operator fails to secure stored goods, resulting in avoidable loss.

Liability depends on the obligation, circumstances, and applicable standard of care.

C. Delay

Delay, or mora, occurs when a party fails to perform on time despite demand, unless demand is unnecessary.

There are three common types:

Mora solvendi — delay by the debtor;
Mora accipiendi — delay by the creditor in accepting performance;
Compensatio morae — delay by both parties in reciprocal obligations.

D. Contravention of the Tenor of Obligation

This occurs when a party violates the terms of the obligation in any other way.

Example:

A tenant uses leased premises for a prohibited business despite a lease restriction.

VIII. Demand and Delay

As a general rule, the debtor is in delay only after the creditor makes a judicial or extrajudicial demand.

Demand may be:

Written demand letter;
Verbal demand;
Filing of complaint in court;
Other clear act requiring performance.

However, demand is not necessary when:

The law so provides;
The contract expressly provides;
Time is of the essence;
Demand would be useless;
The obligation or circumstances show that demand is unnecessary.

Example:

If a wedding photographer agrees to deliver services on the wedding day, the date is essential. Failure to appear may constitute breach even without prior demand.

IX. Fortuitous Events

A fortuitous event is an occurrence that could not be foreseen, or though foreseen, was inevitable.

A debtor is generally not liable for loss due to fortuitous event, except when:

The law provides liability;
The contract provides liability;
The nature of the obligation requires assumption of risk;
The debtor is in delay;
The debtor promised to deliver the same thing to two or more persons with different interests;
The debtor contributed to the loss;
The fortuitous event merely aggravated an existing breach.

Examples of possible fortuitous events:

Earthquake;
Typhoon;
Flood;
Fire not caused by negligence;
War;
Sudden government prohibition;
Pandemic-related legal restrictions, depending on facts.

A party invoking fortuitous event must show that the event caused the failure and that the party was free from fault.

X. Pure and Conditional Obligations

A. Pure Obligation

A pure obligation is immediately demandable because it is not subject to a condition or period.

Example:

“I promise to pay you ₱50,000.”

If no period or condition is attached, payment may be demanded at once, subject to the nature and circumstances of the obligation.

B. Conditional Obligation

A conditional obligation depends on a future and uncertain event, or a past event unknown to the parties.

Example:

“I will pay you ₱100,000 if I pass the bar examinations.”

The obligation’s demandability depends on fulfillment of the condition.

XI. Suspensive and Resolutory Conditions

A. Suspensive Condition

A suspensive condition gives rise to the obligation only upon fulfillment of the condition.

Example:

“I will sell you my land if my loan is approved.”

Before the condition happens, the obligation is not yet demandable.

B. Resolutory Condition

A resolutory condition extinguishes an obligation upon fulfillment of the condition.

Example:

“You may occupy the property until my son returns from abroad.”

When the son returns, the right to occupy ends.

XII. Potestative, Casual, and Mixed Conditions

A. Potestative Condition

A potestative condition depends on the will of one party.

If the condition depends solely on the debtor’s will, it may invalidate the conditional obligation.

Example:

“I will pay you if I want to.”

This gives no real enforceable obligation.

B. Casual Condition

A casual condition depends on chance or the will of a third person.

Example:

“I will pay you if the government approves the permit.”

C. Mixed Condition

A mixed condition depends partly on the will of a party and partly on chance or a third person.

Example:

“I will pay you if you obtain the permit and the agency approves it.”

XIII. Impossible and Illegal Conditions

Impossible conditions and those contrary to law, morals, good customs, public order, or public policy generally annul the obligation dependent on them.

Example:

“I will pay you if you commit a crime.”

The law will not enforce such condition.

If the obligation is divisible and the illegal condition affects only part, the valid portion may sometimes remain enforceable depending on the facts.

XIV. Obligations With a Period

An obligation with a period depends on a future and certain event.

Example:

“I will pay you on December 31, 2026.”

Unlike a condition, a period is certain to arrive, although the exact time may sometimes be uncertain.

A. Suspensive Period

The obligation begins or becomes demandable only upon arrival of the period.

Example:

Payment due on a specific date.

B. Resolutory Period

The obligation is demandable at once but terminates upon arrival of the period.

Example:

Lease valid until December 31, 2026.

C. Benefit of the Period

The period is generally presumed to benefit both creditor and debtor, unless the obligation or circumstances show it was established in favor of one party only.

If the period benefits both, neither party may demand performance before the due date without the other’s consent.

D. Loss of Right to Use the Period

The debtor may lose the benefit of the period when:

The debtor becomes insolvent, unless security is given;
The debtor fails to furnish promised guarantees or securities;
The debtor impairs the guarantees or securities;
The debtor violates an undertaking in consideration of which the creditor agreed to the period;
The debtor attempts to abscond.

When the period is lost, the obligation may become immediately demandable.

XV. Alternative Obligations

An alternative obligation requires performance of one of several prestations.

Example:

“A shall either deliver a car, pay ₱500,000, or transfer a motorcycle.”

The right of choice generally belongs to the debtor, unless expressly granted to the creditor.

Once the choice is communicated, the obligation becomes simple and the selected prestation must be performed.

XVI. Facultative Obligations

A facultative obligation has one principal prestation, but the debtor may substitute another.

Example:

“A must deliver a specific laptop, but may instead pay ₱50,000.”

Only the principal prestation is due unless substitution is made.

If the principal thing is lost through fortuitous event before substitution, the obligation may be extinguished. If the substitute is lost before substitution, the debtor is generally not liable because it is not yet due.

XVII. Joint and Solidary Obligations

A. Joint Obligation

In a joint obligation, each debtor is liable only for their proportionate share, and each creditor may demand only their share.

Example:

A and B jointly owe C ₱100,000. Unless solidarity is provided, each owes ₱50,000.

Joint obligation is the default rule.

B. Solidary Obligation

In a solidary obligation, each debtor may be compelled to pay the whole obligation, or each creditor may demand the whole obligation.

Solidarity exists only when:

The law provides;
The contract expressly provides;
The nature of the obligation requires solidarity.

Common phrases indicating solidarity:

“Jointly and severally”;
“Solidarily liable”;
“In solidum”;
“Each liable for the whole.”

If one solidary debtor pays the whole obligation, that debtor may seek reimbursement from co-debtors for their shares.

XVIII. Divisible and Indivisible Obligations

A. Divisible Obligation

An obligation is divisible if it can be performed in parts without altering its essence.

Example:

Payment of ₱100,000 in installments.

B. Indivisible Obligation

An obligation is indivisible if partial performance would destroy or alter its purpose.

Example:

Delivery of a specific car.

Indivisibility refers to the object or prestation. Solidarity refers to the legal tie among parties. They are different concepts.

XIX. Obligations With a Penal Clause

A penal clause imposes a penalty for breach.

Example:

“If the contractor fails to finish by June 30, he shall pay ₱5,000 per day of delay.”

A penalty may serve as:

Substitute for damages;
Security for performance;
Punishment for breach;
Liquidated damages.

The creditor generally cannot recover both the penalty and actual damages unless:

The parties agreed;
The debtor acted with fraud;
The debtor refuses to pay the penalty.

Courts may reduce penalties when they are iniquitous, unconscionable, or when there has been partial or irregular performance.

XX. Extinguishment of Obligations

Obligations may be extinguished by:

Payment or performance;
Loss of the thing due;
Condonation or remission;
Confusion or merger;
Compensation;
Novation;
Annulment;
Rescission;
Fulfillment of resolutory condition;
Prescription;
Other causes provided by law.

XXI. Payment or Performance

Payment means not only delivery of money but also performance of the obligation.

For payment to extinguish the obligation, it must generally be:

Complete;
Made by the proper person;
Made to the proper person;
In accordance with the terms of the obligation.

Partial payment does not extinguish the whole obligation unless accepted as full satisfaction.

A. Who May Pay

Payment may be made by:

The debtor;
A third person interested in the obligation;
A third person not interested, subject to rules on reimbursement and subrogation.

A creditor may refuse payment by a third person in certain personal obligations where the debtor’s identity or qualifications are important.

B. To Whom Payment Must Be Made

Payment should be made to:

The creditor;
The creditor’s successor;
A person authorized to receive payment;
A third person if payment benefits the creditor under legally recognized circumstances.

Payment to the wrong person generally does not extinguish the obligation unless ratified or beneficial to the creditor.

C. Application of Payments

When a debtor owes several debts of the same kind to the same creditor, payment may be applied to one or another debt.

Rules generally include:

The debtor may designate the debt to which payment applies;
If the debtor does not designate and accepts receipt indicating application, that application may control;
If neither applies, the debt most onerous to the debtor is satisfied first;
If debts are equally onerous, payment applies proportionately.

D. Dation in Payment

Dation in payment occurs when property is delivered and accepted as equivalent of performance of a monetary obligation.

Example:

A debtor transfers a car to the creditor to settle a debt.

It is governed by rules similar to sale because ownership is transferred as payment.

E. Payment by Cession

Payment by cession occurs when a debtor assigns all property to creditors so that the creditors may sell the property and apply proceeds to debts.

It does not necessarily transfer ownership immediately and does not extinguish all debts unless proceeds are sufficient or parties agree otherwise.

F. Tender of Payment and Consignation

If the creditor unjustly refuses to accept payment, the debtor may make tender of payment and consignation.

Tender of payment is the debtor’s offer to pay.

Consignation is depositing the thing or amount due with the court.

Consignation may extinguish the obligation if legal requirements are met.

XXII. Loss of the Thing Due

If a determinate thing is lost without the debtor’s fault and before delay, the obligation may be extinguished.

Loss includes:

Perishing;
Going out of commerce;
Disappearance in a way that existence is unknown or recovery is impossible.

If the debtor is at fault or in delay, liability may remain.

For generic things, loss generally does not extinguish the obligation.

XXIII. Condonation or Remission

Condonation is gratuitous abandonment by the creditor of the right to collect.

It is essentially a donation and must comply with formalities of donations when required.

Example:

A creditor forgives a ₱100,000 loan.

Condonation may be express or implied.

XXIV. Confusion or Merger

Confusion occurs when the qualities of creditor and debtor are merged in the same person.

Example:

A debtor inherits the credit from the creditor.

If A owes B ₱50,000 and B dies leaving A as sole heir, the obligation may be extinguished because A becomes both debtor and creditor.

XXV. Compensation

Compensation occurs when two persons are creditors and debtors of each other.

Example:

A owes B ₱100,000. B owes A ₱80,000. Compensation may extinguish both debts up to ₱80,000, leaving A owing ₱20,000.

Legal compensation generally requires that:

Each party is principal creditor and debtor of the other;
Both debts consist of money or consumable things of the same kind and quality;
Both debts are due;
Both debts are liquidated and demandable;
There is no retention or controversy by third persons communicated in due time.

XXVI. Novation

Novation extinguishes an obligation by creating a new one that substitutes it.

Novation may be:

Objective — change in object or principal conditions;
Subjective — change in debtor or creditor;
Mixed — change in both object and parties.

Novation is never presumed. It must be express or clearly incompatible with the old obligation.

Examples:

Replacing a loan with a new loan agreement;
Substituting a new debtor;
Changing the obligation to deliver land into an obligation to pay money.

Mere extension of time or change in payment schedule does not always constitute novation.

XXVII. Rescission

Rescission is a remedy that cancels a valid contract because of economic prejudice or lesion in cases provided by law.

Contracts that may be rescissible include certain contracts entered into by guardians, representatives, or in fraud of creditors, subject to legal requirements.

Rescission is subsidiary. It is generally available only when the injured party has no other legal means to obtain reparation.

XXVIII. Annulment

Annulment applies to voidable contracts.

Voidable contracts are valid until annulled.

Grounds include:

Incapacity of one party;
Vitiated consent through mistake, violence, intimidation, undue influence, or fraud.

Annulment extinguishes the contract and generally requires mutual restitution.

XXIX. Prescription

Prescription may extinguish the right to enforce an obligation after the lapse of time.

Different actions have different prescriptive periods.

A claim may be valid morally or factually but legally unenforceable if prescription has set in.

Parties should act promptly to enforce rights.

XXX. Contracts in General

A. Definition of Contract

A contract is a meeting of minds between two persons whereby one binds himself, with respect to the other, to give something or render some service.

A contract creates obligations.

B. Principle of Autonomy of Contracts

Parties may establish stipulations, clauses, terms, and conditions as they deem convenient, provided they are not contrary to:

Law;
Morals;
Good customs;
Public order;
Public policy.

This allows freedom of contract, but not unlimited freedom.

C. Obligatory Force of Contracts

Contracts have the force of law between the parties and must be complied with in good faith.

A party cannot simply disregard a contract because it later becomes inconvenient or less profitable.

D. Mutuality of Contracts

The validity and performance of a contract cannot be left solely to the will of one party.

Example:

A clause saying, “The buyer shall pay only if the buyer feels like paying,” is generally invalid because it leaves performance entirely to the buyer.

E. Relativity of Contracts

Contracts generally bind only the parties, their assigns, and heirs.

They usually do not bind third persons.

Exceptions include:

Stipulation pour autrui;
Contracts creating real rights after registration;
Fraud of creditors;
Tortious interference;
Other cases provided by law.

XXXI. Essential Requisites of Contracts

There is no contract unless the following concur:

Consent;
Object certain;
Cause of the obligation.

These are essential elements.

XXXII. Consent

Consent is manifested by the meeting of offer and acceptance upon the thing and cause that constitute the contract.

Consent must be:

Intelligent;
Free;
Spontaneous;
Real.

Consent may be defective if affected by:

Mistake;
Violence;
Intimidation;
Undue influence;
Fraud.

A. Offer

An offer is a definite proposal to enter into a contract.

It must be clear enough so that acceptance will create a contract.

B. Acceptance

Acceptance must be absolute.

A qualified acceptance is a counter-offer.

Example:

A offers to sell a car for ₱500,000. B replies, “I accept if you reduce it to ₱450,000.” This is not acceptance; it is a counter-offer.

C. Withdrawal of Offer

An offer may generally be withdrawn before acceptance, unless supported by an option contract or other legal basis making it irrevocable.

D. Option Contract

An option contract is a separate contract where one party pays consideration for the privilege to decide whether to enter into a principal contract within a fixed period.

Example:

Buyer pays ₱50,000 option money for the right to buy land within 60 days at a fixed price.

Without separate consideration, an option may be withdrawn before acceptance, subject to applicable doctrines and facts.

XXXIII. Vices of Consent

A. Mistake

Mistake may vitiate consent if it refers to the substance of the thing or conditions principally moving a party to enter into the contract.

Not every mistake invalidates a contract.

Example:

Buying a painting believed to be an original masterpiece when it is actually a replica may involve substantial mistake, depending on facts.

B. Violence

Violence occurs when serious or irresistible force is used to obtain consent.

C. Intimidation

Intimidation occurs when one party is compelled by reasonable and well-grounded fear of imminent and grave evil upon person or property, or upon spouse, descendants, or ascendants.

D. Undue Influence

Undue influence occurs when a person takes improper advantage of power over another’s will, depriving the latter of reasonable freedom of choice.

Relevant factors:

Confidential relationship;
Mental weakness;
Dependence;
Distress;
Ignorance;
Financial pressure;
Dominance by one party.

E. Fraud

Fraud exists when insidious words or machinations induce another to enter into a contract that they would not have agreed to otherwise.

Fraud may be:

Causal fraud — vitiates consent and may make the contract voidable;
Incidental fraud — does not vitiate consent but may give rise to damages.

XXXIV. Object of Contracts

The object of a contract must be:

Within the commerce of man;
Licit;
Possible;
Determinate or determinable.

Examples of valid objects:

Land;
Goods;
Services;
Rights;
Business interests;
Intellectual property;
Future things, in proper cases.

Invalid objects include:

Illegal drugs;
Future inheritance except in cases allowed by law;
Impossible services;
Things outside commerce;
Acts contrary to law or public policy.

XXXV. Cause of Contracts

Cause is the essential reason that moves parties to contract.

Examples:

Contract	Cause
Sale	For seller: price; for buyer: thing sold
Lease	Use of property and rent
Donation	Liberality
Loan with interest	Delivery of money and promise to repay with interest
Service contract	Service and compensation

A contract without cause, with unlawful cause, or with false cause may be invalid, subject to legal rules.

XXXVI. Form of Contracts

Contracts are generally obligatory in whatever form they are entered into, provided the essential requisites are present.

However, some contracts require a particular form for:

Validity;
Enforceability;
Convenience;
Registration;
Evidence.

Examples:

Donation of immovable property must be in a public instrument;
Sale of land should be in writing to be enforceable under the Statute of Frauds;
Real estate mortgage must be in a public instrument and registered to bind third persons;
Partnership contributing immovable property requires special formalities;
Certain agency powers must be in writing.

XXXVII. Reformation of Instruments

Reformation is available when the true agreement of the parties is not reflected in the written instrument due to mistake, fraud, inequitable conduct, or accident.

The purpose is not to make a new contract but to make the document express the real agreement.

Example:

The parties agreed to lease Lot A, but the written contract mistakenly states Lot B.

Reformation may not be used when there was no meeting of minds.

XXXVIII. Interpretation of Contracts

If contract terms are clear and leave no doubt, the literal meaning controls.

If terms are ambiguous, interpretation may consider:

Intention of the parties;
contemporaneous and subsequent acts;
nature and object of the contract;
usage or custom;
surrounding circumstances;
interpretation against the party who caused ambiguity.

Contracts should be interpreted to give effect to all provisions, if possible.

XXXIX. Classification of Contracts

Contracts may be classified as:

Consensual — perfected by mere consent;
Real — perfected by delivery;
Formal or solemn — require special form for validity;
Unilateral — obligation on one party only;
Bilateral — reciprocal obligations;
Onerous — each party gives or does something in exchange;
Gratuitous — one party gives a benefit without equivalent;
Commutative — equivalent values are exchanged;
Aleatory — performance depends on chance or risk;
Principal — can stand alone;
Accessory — depends on another contract;
Preparatory — prepares for future contracts;
Nominate — has a specific name under law;
Innominate — lacks a specific legal name.

XL. Stages of a Contract

Contracts go through three stages:

Preparation or negotiation;
Perfection or birth;
Consummation or performance.

A. Preparation

Parties discuss terms, exchange drafts, conduct due diligence, and negotiate.

Generally, no contract exists yet unless there is already a definite offer and acceptance.

Bad faith during negotiations may sometimes create liability.

B. Perfection

A contract is perfected when there is meeting of minds on object and cause.

For consensual contracts, perfection occurs upon consent.

For real contracts, delivery is required.

For formal contracts, required form must be complied with.

C. Consummation

Consummation occurs when parties perform their obligations.

Example:

In a sale, consummation occurs when the seller delivers the thing and buyer pays the price.

XLI. Defective Contracts

Defective contracts are classified as:

Rescissible;
Voidable;
Unenforceable;
Void or inexistent.

XLII. Rescissible Contracts

Rescissible contracts are valid until rescinded.

Examples include certain contracts:

Entered into by guardians causing lesion to wards;
Entered into by representatives causing lesion to absentees;
Undertaken in fraud of creditors;
Involving things under litigation without required approval;
Other contracts specially declared rescissible by law.

Rescission requires restitution and is generally subsidiary.

XLIII. Voidable Contracts

Voidable contracts are valid until annulled.

They may be annulled because:

One party was incapable of giving consent;
Consent was vitiated by mistake, violence, intimidation, undue influence, or fraud.

Voidable contracts may be ratified.

Ratification cleanses the defect from the beginning.

XLIV. Unenforceable Contracts

Unenforceable contracts cannot be sued upon unless ratified.

Examples include:

Unauthorized contracts entered into in another’s name;
Contracts that fail to comply with the Statute of Frauds;
Contracts where both parties are incapable of giving consent.

Unenforceable does not always mean void. Ratification may make them enforceable.

XLV. Statute of Frauds

Certain agreements must be in writing to be enforceable, such as:

Agreements not to be performed within one year;
Promise to answer for the debt, default, or miscarriage of another;
Agreement made in consideration of marriage, other than mutual promise to marry;
Sale of goods, chattels, or things in action above the legal threshold;
Lease longer than one year;
Sale of real property or interest therein;
Representation as to credit of a third person.

The Statute of Frauds applies generally to executory contracts. Once a contract is fully or partially performed, the doctrine may not apply in the same way.

XLVI. Void or Inexistent Contracts

Void contracts produce no legal effect and cannot be ratified.

Examples:

Contracts with unlawful cause, object, or purpose;
Absolutely simulated or fictitious contracts;
Contracts whose cause or object did not exist at the time;
Contracts whose object is outside the commerce of man;
Contracts contemplating impossible service;
Contracts where intention cannot be determined;
Contracts expressly prohibited or declared void by law.

An action or defense for declaration of inexistence of a void contract generally does not prescribe.

XLVII. Simulation of Contracts

Simulation may be:

Absolute simulation — parties do not intend to be bound at all;
Relative simulation — parties conceal their true agreement under the appearance of another.

Example of absolute simulation:

A fake deed of sale is executed only to hide property from creditors, with no intent to transfer ownership.

Example of relative simulation:

A donation is disguised as a sale.

Absolute simulation results in a void contract. Relative simulation may bind the parties to their true agreement if lawful and proven.

XLVIII. Natural Obligations

Natural obligations are based on equity and natural law. They are not enforceable by court action, but once voluntarily performed, the debtor cannot recover what was delivered or paid.

Example:

A debt has prescribed. The debtor voluntarily pays despite prescription. The debtor generally cannot recover the payment merely because the creditor could no longer sue.

XLIX. Estoppel

Estoppel prevents a person from taking a position inconsistent with their previous conduct, representation, or admission when another relied on it.

Example:

A landlord repeatedly accepts late rent without objection and later suddenly claims immediate termination for the same late-payment practice. Depending on facts, estoppel may be raised.

Estoppel cannot validate a contract that law declares void for reasons of public policy, but it may affect rights and defenses in proper cases.

L. Damages in Obligations and Contracts

Damages may be awarded for breach of obligation or contract.

Types include:

Actual or compensatory damages;
Moral damages;
Nominal damages;
Temperate or moderate damages;
Liquidated damages;
Exemplary or corrective damages;
Attorney’s fees and litigation expenses, when allowed.

A. Actual Damages

Actual damages compensate for proven pecuniary loss.

They must be supported by evidence.

Examples:

Repair costs;
lost income;
medical expenses;
value of damaged property;
unpaid contract price;
replacement cost.

B. Moral Damages

Moral damages compensate for mental anguish, serious anxiety, wounded feelings, social humiliation, or similar injury.

In breach of contract, moral damages are not automatically awarded. They may be recoverable in specific cases, such as bad faith, fraud, wanton conduct, or certain contracts involving personal interests.

C. Nominal Damages

Nominal damages are awarded to vindicate a right when no substantial loss is proven.

D. Temperate Damages

Temperate damages may be awarded when some pecuniary loss is proven but the exact amount cannot be established with certainty.

E. Liquidated Damages

Liquidated damages are agreed damages stipulated in the contract.

They may be reduced if unconscionable or iniquitous.

F. Exemplary Damages

Exemplary damages are imposed by way of example or correction for the public good, usually when the defendant acted in a wanton, fraudulent, reckless, oppressive, or malevolent manner.

G. Attorney’s Fees

Attorney’s fees may be awarded only in cases allowed by law, such as when a party is compelled to litigate due to another’s unjust act or when stipulated and reasonable.

LI. Reciprocal Obligations

Reciprocal obligations arise from the same cause, where each party is debtor and creditor of the other.

Example:

In sale, the seller must deliver the thing, and the buyer must pay the price.

If one party does not comply, the injured party may choose between:

Fulfillment; or
Rescission;

with damages in either case.

This is the basis of rescission under Article 1191 of the Civil Code.

LII. Rescission Under Article 1191

In reciprocal obligations, the power to rescind is implied in case one party fails to comply.

The injured party may seek:

Specific performance with damages; or
Rescission with damages.

The court may grant a period if there is just cause.

Rescission is not always automatic unless the contract validly provides automatic cancellation and legal requirements are met.

LIII. Specific Performance

Specific performance compels a party to comply with the obligation.

It is available especially in obligations to give.

Example:

A seller who refuses to deliver titled land after full payment may be sued for specific performance.

For personal services, courts generally do not compel involuntary servitude, but damages may be awarded.

LIV. Rescission vs. Resolution vs. Annulment

These terms are often confused.

Remedy	Meaning
Rescission under Article 1191	Cancellation due to substantial breach in reciprocal obligations
Rescission for lesion/fraud of creditors	Subsidiary remedy for economic prejudice
Annulment	Remedy for voidable contracts
Declaration of nullity	Applies to void contracts
Termination	Ending contract under its terms or law

The correct remedy depends on the defect or breach.

LV. Substantial Breach

Not every minor breach justifies rescission.

Rescission usually requires substantial and fundamental breach that defeats the object of the contract.

Example:

Failure to pay the entire purchase price may justify rescission. A minor delay in submitting a document may not, depending on circumstances.

LVI. Good Faith in Contracts

Parties must act in good faith.

Good faith requires honesty, fairness, and fidelity to the agreed purpose.

Bad faith may exist when a party:

Evades performance;
abuses rights;
misleads the other party;
hides material facts;
prevents fulfillment of a condition;
terminates arbitrarily;
exercises rights solely to injure another.

Bad faith may justify damages.

LVII. Abuse of Rights

Even if a person has a legal right, it must be exercised in accordance with justice, honesty, and good faith.

A person who abuses rights and causes damage may be liable.

Example:

A creditor may demand payment, but may not use threats, public humiliation, or unlawful harassment.

LVIII. Unjust Enrichment

No one should unjustly enrich themselves at the expense of another.

Unjust enrichment supports quasi-contractual remedies and restitution.

Example:

A contractor mistakenly improves the wrong property. The property owner may be required to compensate to the extent of benefit received, depending on good faith and circumstances.

LIX. Contracts of Adhesion

A contract of adhesion is prepared by one party, usually in printed form, and the other party merely adheres to it.

Examples:

Insurance policies;
transport tickets;
bank forms;
online terms of service;
utility service contracts.

Contracts of adhesion are not automatically invalid. But ambiguous terms are construed against the party who drafted them, and oppressive provisions may be struck down.

LX. Standard Form Contracts

Standard form contracts are valid if they meet essential requisites and are not contrary to law.

However, courts may scrutinize:

hidden charges;
waiver of statutory rights;
unconscionable penalties;
one-sided cancellation clauses;
misleading terms;
fine-print limitations.

LXI. Waivers

A waiver is the intentional relinquishment of a known right.

For a waiver to be valid, it must be:

Voluntary;
Knowing;
Clear;
Not contrary to law, morals, public policy, or public order.

Waivers of future fraud, gross negligence, or statutory protections may be invalid.

LXII. Compromise Agreements

A compromise is a contract where parties make reciprocal concessions to avoid litigation or end one already commenced.

It has the effect and authority of a contract.

A judicial compromise approved by a court has the effect of a judgment.

Compromise agreements must not be contrary to law or public policy.

LXIII. Agency and Authority in Contracts

A person may enter into contracts personally or through an agent.

An agent must act within authority.

If a person signs for another without authority, the contract may be unenforceable against the supposed principal unless ratified.

Special powers of attorney are required for certain acts, such as selling real property, mortgaging property, or entering into specified transactions.

LXIV. Contracts Involving Real Property

Contracts involving land require special care.

Common rules:

Sale of land should be in writing to be enforceable;
Deed of sale must be notarized for registration;
Title transfer requires BIR clearance and Registry registration;
Sale by agent requires written authority;
Spousal consent may be required;
Foreign ownership restrictions may apply;
Real estate mortgages must be registered to bind third persons.

A buyer should conduct due diligence before paying.

LXV. Earnest Money and Option Money

A. Earnest Money

Earnest money is part of the purchase price and proof of perfection of a sale, unless otherwise agreed.

Example:

Buyer gives ₱100,000 earnest money for a ₱2,000,000 property. The amount is credited to the price.

B. Option Money

Option money is consideration for the option contract itself.

It is paid for the privilege of deciding whether to buy.

It is not automatically part of the purchase price unless agreed.

LXVI. Contract to Sell vs. Contract of Sale

A. Contract of Sale

Ownership passes upon delivery, subject to legal rules.

The seller transfers ownership; the buyer pays the price.

B. Contract to Sell

The seller reserves ownership until full payment or fulfillment of a condition.

Failure to pay generally means the suspensive condition did not occur, so ownership does not transfer.

This distinction is crucial in real estate transactions.

LXVII. Lease Contracts

A lease is a contract where one party gives another the enjoyment or use of a thing for a price and period.

Common obligations:

Lessor

Deliver the property;
maintain peaceful possession;
make necessary repairs, unless otherwise agreed;
respect lease terms.

Lessee

Pay rent;
use property properly;
return property at end of lease;
comply with restrictions;
answer for damage caused by fault or negligence.

Late rent, unauthorized sublease, illegal use, or destruction of property may justify remedies.

LXVIII. Loan Contracts

Loans may be:

Commodatum — use of non-consumable thing, generally gratuitous, with obligation to return the same thing;
Mutuum — loan of money or consumable thing, with obligation to return the equivalent.

Interest must generally be stipulated in writing to be demandable.

Unconscionable interest may be reduced by courts.

LXIX. Interest

Interest may be:

Monetary interest — compensation for use of money;
Compensatory interest — damages for delay;
Penalty interest — stipulated charge for breach.

Interest must be lawful, not unconscionable, and properly stipulated where required.

Courts may reduce excessive interest rates.

LXX. Guaranty and Suretyship

A. Guaranty

A guarantor binds himself to pay if the principal debtor fails to do so.

The guarantor generally has benefit of excussion unless waived.

B. Suretyship

A surety is directly, primarily, and solidarily liable with the principal debtor.

Suretyship is more burdensome than guaranty.

Common in loans, bonds, construction contracts, and commercial transactions.

LXXI. Pledge, Mortgage, and Antichresis

A. Pledge

Personal property is delivered to the creditor as security.

B. Real Estate Mortgage

Immovable property secures an obligation. The debtor retains possession unless otherwise agreed.

Foreclosure may occur upon default.

C. Chattel Mortgage

Personal property is mortgaged as security, subject to registration requirements.

D. Antichresis

The creditor acquires the right to receive fruits of immovable property and apply them to interest and principal.

LXXII. Sales

A sale is a contract where one party transfers ownership and delivers a determinate thing, and the other pays a price certain in money or equivalent.

Elements:

Consent;
Determinate subject matter;
Price certain.

Obligations of seller:

Transfer ownership;
deliver the thing;
warrant against eviction and hidden defects;
preserve the thing before delivery.

Obligations of buyer:

Pay price;
accept delivery;
pay interest in proper cases;
comply with terms.

LXXIII. Warranties in Sale

Warranties may be:

Express warranties;
Implied warranty against eviction;
Implied warranty against hidden defects;
Implied warranty of merchantability or fitness in proper cases.

Warranty remedies may include rescission, price reduction, damages, repair, replacement, or other relief depending on law and contract.

LXXIV. Agency

Agency is a contract where a person binds himself to render service or do something in representation or on behalf of another, with consent or authority.

Essential concepts:

Principal;
Agent;
Authority;
Representation;
Fiduciary duty.

An agent must act within authority and in the principal’s interest.

A principal may be bound by acts within actual or apparent authority, subject to rules.

LXXV. Partnership

A partnership is formed when two or more persons bind themselves to contribute money, property, or industry to a common fund, with intention of dividing profits.

Elements:

Agreement;
contribution;
common fund;
intent to divide profits;
lawful purpose.

Partners generally owe fiduciary duties to each other.

LXXVI. Trusts

A trust is a legal relationship where one person holds property for the benefit of another.

Trusts may be:

Express;
Implied;
Resulting;
Constructive.

Trusts often arise in property, inheritance, agency, and fraud situations.

LXXVII. Privity and Third Persons

As a rule, only parties may sue on a contract.

Exceptions include:

Stipulation in favor of a third person;
Assignment of rights;
Contracts intended to benefit third persons;
Tortious interference;
Real rights after registration;
Heirs and successors, subject to personal obligations and law.

LXXVIII. Stipulation Pour Autrui

A stipulation pour autrui is a stipulation in favor of a third person.

The third person may demand fulfillment if:

The stipulation is clearly and deliberately conferred in their favor;
The third person communicates acceptance before revocation.

Example:

A life insurance policy naming a beneficiary.

LXXIX. Assignment of Rights

A creditor may assign rights to another, unless prohibited by law, contract, or nature of the obligation.

The debtor should be notified to avoid paying the wrong person.

Assignment transfers credit, not necessarily obligations, unless assumption of obligations is agreed.

LXXX. Delegation and Assumption of Obligations

A debtor may not simply transfer obligations to another without creditor consent.

Substitution of debtor requires creditor consent because the creditor relied on the debtor’s identity, solvency, or trustworthiness.

LXXXI. Tortious Interference With Contract

A third person who induces a contracting party to violate a contract may be liable if interference is unjustified.

Elements generally include:

Existence of a valid contract;
Knowledge by third person;
interference without legal justification;
damage.

Competition alone is not always unlawful; malicious or unjustified interference may be.

LXXXII. Electronic Contracts

Contracts may be formed electronically, subject to laws on electronic commerce, evidence, consumer protection, data privacy, and special regulations.

Electronic consent may be shown by:

Clicking acceptance;
digital signature;
email confirmation;
platform transaction;
electronic payment;
conduct showing agreement.

Electronic evidence must be authenticated if disputed.

LXXXIII. Consumer Contracts

Consumer contracts are subject to consumer protection rules.

Issues include:

deceptive sales acts;
unfair terms;
warranties;
refunds;
product defects;
hidden charges;
misleading advertisements;
abusive collection practices.

Civil Code contract rules apply together with consumer laws.

LXXXIV. Employment Contracts

Employment contracts are governed by Civil Code principles and labor law.

Freedom of contract is limited by labor standards and security of tenure.

An employee cannot validly waive statutory minimum labor rights.

Examples of non-waivable rights:

Minimum wage;
overtime pay;
holiday pay;
13th month pay;
social contributions;
security of tenure;
safe working conditions.

LXXXV. Construction Contracts

Construction contracts often involve:

Scope of work;
plans and specifications;
contract price;
progress billing;
retention;
variation orders;
delay penalties;
warranties;
defects liability;
acceptance and turnover.

Disputes commonly arise from delay, defective work, nonpayment, change orders, and abandonment.

LXXXVI. Service Contracts

Service contracts require careful definition of:

Scope;
deliverables;
fees;
timeline;
standards;
confidentiality;
intellectual property;
termination;
liability;
dispute resolution.

Failure to define scope often causes disputes.

LXXXVII. Confidentiality and Non-Disclosure Agreements

Confidentiality agreements are generally valid if reasonable and lawful.

They should define:

Confidential information;
permitted use;
duration;
exclusions;
remedies;
return or destruction of materials;
relation to data privacy and intellectual property.

Overbroad clauses may be challenged.

LXXXVIII. Non-Compete Clauses

Non-compete clauses may be valid if reasonable as to:

Time;
place;
scope;
business interest protected;
employee or contractor’s role;
public policy.

Overly broad restraints on trade or employment may be invalid or reduced.

LXXXIX. Penalty Clauses and Liquidated Damages

Penalty clauses are common in:

loans;
leases;
construction contracts;
supply agreements;
employment bonds;
service contracts;
real estate transactions.

They are generally enforceable but may be reduced if unconscionable.

XC. Arbitration and Dispute Resolution Clauses

Parties may agree to arbitration, mediation, venue, escalation procedures, or expert determination.

An arbitration clause may require parties to arbitrate instead of immediately filing court action, subject to law.

Dispute resolution clauses should be clear and workable.

XCI. Venue and Jurisdiction Clauses

Parties may agree on venue in civil cases, but jurisdiction is conferred by law, not by agreement.

A contract cannot give a court jurisdiction it does not have.

Venue clauses may be permissive or exclusive depending on wording.

XCII. Choice of Law

Contracts involving foreign elements may include a choice-of-law clause.

However, Philippine courts may refuse to apply foreign law if contrary to Philippine law, public policy, or mandatory rules.

Foreign law must generally be properly pleaded and proven.

XCIII. Contractual Limitation of Liability

Parties may limit liability, but limitations may be invalid if they excuse:

Fraud;
willful injury;
gross negligence;
violation of law;
liability contrary to public policy;
statutory obligations.

Limitation clauses are strictly construed.

XCIV. Force Majeure Clauses

A force majeure clause defines events that excuse or suspend performance.

It may cover:

natural disasters;
war;
terrorism;
government acts;
pandemic restrictions;
strikes;
supply chain disruption;
power failure;
other events beyond control.

A party invoking force majeure must usually show:

The event occurred;
it was covered by the clause or law;
it prevented or delayed performance;
the party was not at fault;
notice was given if required;
mitigation efforts were made.

XCV. Hardship and Change of Circumstances

Philippine law does not generally allow a party to escape a contract merely because it became difficult or unprofitable.

However, extreme changes may be addressed through:

Force majeure;
impossibility;
rebus sic stantibus principles in limited cases;
contract renegotiation;
equity;
statutory relief;
termination clauses.

Commercial hardship alone is usually insufficient.

XCVI. Interpretation Against the Drafter

Ambiguous provisions are generally construed against the party who caused the ambiguity.

This is especially relevant in:

insurance policies;
employment contracts;
bank forms;
adhesion contracts;
consumer contracts;
online standard terms.

Clear drafting reduces disputes.

XCVII. Public Policy Limits

Contracts are invalid if they violate public policy.

Examples may include:

contracts to commit a crime;
contracts waiving future fraud;
contracts restraining marriage;
contracts suppressing prosecution for serious crimes;
contracts violating labor standards;
contracts enabling tax evasion;
contracts restricting constitutional rights unlawfully;
contracts involving prohibited property.

XCVIII. Contracts and Minors

Minors generally cannot give full valid consent.

Contracts entered into by minors are generally voidable, subject to exceptions and rules.

However, minors may be liable in certain cases for necessaries or when law provides.

Parents or guardians may need authority for certain transactions involving minors’ property.

XCIX. Contracts and Married Persons

Marriage may affect contracts involving property.

Important issues:

Property regime;
spousal consent;
family home;
administration of community or conjugal property;
separate property;
donation between spouses;
transactions prejudicing the other spouse.

A sale or mortgage of conjugal or community property without required consent may be void or voidable depending on law and circumstances.

C. Contracts and Corporations

Corporations act through authorized officers and boards.

A corporate contract may require:

Board approval;
secretary’s certificate;
authority of signatory;
compliance with articles and bylaws;
regulatory approval in special cases.

A person dealing with a corporation should verify authority.

CI. Contracts and Government

Government contracts are subject to special rules, including:

public bidding;
appropriation;
authority of signatories;
audit rules;
procurement law;
anti-graft laws;
constitutional limitations;
public purpose requirements.

A government officer cannot bind the government beyond lawful authority.

CII. Nullity Due to Illegality

If a contract is illegal, courts generally leave parties where they are, subject to exceptions.

For example, a contract to sell prohibited drugs cannot be enforced. Neither party may ordinarily seek court assistance to enforce illegal terms.

Exceptions may exist to protect innocent parties or public interest.

CIII. Pari Delicto

The doctrine of pari delicto means that when both parties are equally at fault in an illegal contract, neither may recover from the other.

However, the doctrine has exceptions, such as when public policy is better served by allowing recovery.

CIV. Ratification

Ratification confirms a defective contract and cleanses certain defects.

Voidable and unenforceable contracts may be ratified.

Void contracts cannot be ratified.

Ratification may be express or implied.

Example:

A person who was a minor signs a contract, reaches majority, and voluntarily continues performing with knowledge of the defect. Ratification may be argued.

CV. Restitution

When a contract is annulled, rescinded, or declared void in certain cases, restitution may be required.

Parties may need to return:

Things received;
price paid;
fruits;
interest;
benefits unjustly retained.

Restitution is subject to rules on fault, illegality, impossibility, and protection of third persons.

CVI. Prescription of Contract Actions

Actions based on written contracts, oral contracts, injury to rights, quasi-delicts, and other causes have different prescriptive periods.

A creditor should not delay enforcement.

Prescription may be interrupted by:

Filing of action;
written extrajudicial demand;
written acknowledgment by debtor;
other legally recognized acts.

The exact period depends on the nature of the action.

CVII. Evidence in Contract Disputes

Useful evidence includes:

Signed contract;
emails;
text messages;
official receipts;
invoices;
delivery receipts;
bank transfers;
photographs;
witness testimony;
demand letters;
minutes of meetings;
purchase orders;
change orders;
acceptance certificates;
expert reports.

Written documentation is crucial.

CVIII. Demand Letters

A demand letter may:

Place the debtor in delay;
interrupt prescription;
clarify the breach;
demand payment or performance;
support later litigation;
open settlement discussions.

A good demand letter should state:

parties;
contract;
obligation breached;
facts;
amount or performance demanded;
deadline;
documents attached;
reservation of rights.

CIX. Sample Demand Letter Structure

A basic demand letter may include:

Date;
recipient’s name and address;
subject;
statement of contract or obligation;
details of breach;
computation of amount due;
demand for payment or performance;
deadline;
warning of legal action;
signature.

The tone should be firm but professional.

CX. Remedies for Breach of Contract

Possible remedies include:

Specific performance;
rescission or resolution;
damages;
injunction;
reformation;
annulment;
declaration of nullity;
restitution;
foreclosure of security;
collection suit;
arbitration;
settlement or compromise.

The correct remedy depends on the contract and breach.

CXI. Collection Cases

A collection case may be filed when a debtor refuses to pay.

Evidence usually includes:

promissory note;
loan agreement;
statement of account;
checks;
receipts;
demand letter;
acknowledgment of debt;
proof of partial payments.

Defenses may include payment, prescription, lack of consideration, fraud, usury or unconscionable interest, novation, compensation, or invalid contract.

CXII. Small Claims

Certain money claims may be filed under small claims procedure.

Small claims are intended to be faster and simpler.

Lawyers generally do not appear for parties during small claims hearings, subject to the rules.

Small claims may involve:

unpaid loans;
rent;
services;
sale of goods;
damages from contracts;
other money claims within jurisdictional limits.

The claim must be supported by documents.

CXIII. Injunction

Injunction may restrain a party from doing an act or compel preservation of rights while litigation is pending.

It may be relevant where damages are insufficient, such as:

threatened sale of property;
breach of confidentiality;
unlawful construction;
violation of non-compete or non-disclosure clauses;
disposal of disputed assets.

Injunction requires compliance with procedural and substantive requirements.

CXIV. Foreclosure

If an obligation is secured by mortgage and the debtor defaults, the creditor may foreclose.

Foreclosure may be:

Judicial;
Extrajudicial, if authorized.

Foreclosure does not always extinguish all obligations if proceeds are insufficient, depending on the debt and applicable law.

CXV. Restructuring and Settlement

Parties may restructure obligations by agreement.

A restructuring may include:

extended payment period;
reduced interest;
partial condonation;
new collateral;
installment plan;
waiver of penalties;
dation in payment;
compromise.

The agreement should clearly state whether it novates the old obligation or merely modifies payment terms.

CXVI. Practical Contract Drafting Checklist

A well-drafted contract should identify:

Parties and capacities;
authority of signatories;
background or recitals;
object;
price or consideration;
obligations of each party;
timelines;
delivery or performance standards;
payment terms;
taxes and expenses;
warranties;
default provisions;
penalties;
force majeure;
termination;
confidentiality;
dispute resolution;
notices;
governing law;
signatures and notarization, if needed.

CXVII. Common Contract Mistakes

Common mistakes include:

No written contract;
vague scope of work;
unclear payment terms;
no deadline;
no default clause;
excessive penalties;
no authority of signatory;
missing spouse consent;
failure to notarize real property documents;
failure to register real rights;
relying on verbal modifications;
ignoring tax consequences;
using templates without review;
failing to attach specifications;
not keeping proof of performance.

CXVIII. Common Defenses in Contract Cases

Defenses may include:

Payment;
prescription;
lack of consent;
fraud;
mistake;
intimidation;
incapacity;
lack of authority;
illegality;
impossibility;
force majeure;
substantial performance;
waiver;
estoppel;
compensation;
novation;
rescission;
unenforceability under Statute of Frauds;
failure of consideration;
breach by the other party.

CXIX. Direct Answers to Common Questions

1. What is an obligation?

An obligation is a juridical necessity to give, to do, or not to do.

2. What are the sources of obligations?

The sources are law, contracts, quasi-contracts, crimes, and quasi-delicts.

3. What are the elements of a contract?

Consent, object certain, and cause.

4. Are verbal contracts valid?

Generally yes, if essential requisites are present. But some contracts must be in writing to be enforceable, valid, or registrable.

5. Is a notarized contract automatically valid?

No. Notarization affects form and evidentiary character, but it does not cure lack of consent, illegal object, lack of authority, or other substantive defects.

6. Can parties agree to anything they want?

No. Contract stipulations must not violate law, morals, good customs, public order, or public policy.

7. What happens if a party breaches a contract?

The injured party may seek performance, rescission, damages, or other remedies depending on the obligation.

8. What is the difference between void and voidable contracts?

A void contract has no legal effect from the beginning and cannot be ratified. A voidable contract is valid until annulled and may be ratified.

9. What is novation?

Novation extinguishes an old obligation by replacing it with a new one, either by changing the object, principal conditions, debtor, or creditor.

10. Can a penalty clause be reduced?

Yes, courts may reduce penalties that are unconscionable, iniquitous, or when there has been partial or irregular performance.

CXX. Conclusion

Obligations and Contracts under Philippine Civil Law govern the legal relationships by which persons are bound to give, do, or refrain from doing something. Obligations may arise from law, contracts, quasi-contracts, crimes, and quasi-delicts. Contracts are among the most common sources of obligations and are built on consent, object, and cause.

The Civil Code protects freedom of contract but limits it through law, morals, good customs, public order, and public policy. Parties may create their own terms, but they must comply with good faith, mutuality, fairness, and legal requirements.

The most important principles are:

An obligation is enforceable only when supported by a juridical tie;
Contracts have the force of law between the parties;
Consent, object, and cause are essential to contracts;
Breach may arise from fraud, negligence, delay, or violation of the obligation;
Obligations may be pure, conditional, with a period, alternative, facultative, joint, solidary, divisible, indivisible, or with penal clauses;
Obligations may be extinguished by payment, loss, condonation, confusion, compensation, novation, rescission, annulment, prescription, and other legal causes;
Defective contracts may be rescissible, voidable, unenforceable, or void;
Remedies depend on the nature of the obligation, defect, breach, and evidence.

A careful understanding of obligations and contracts is essential in business, employment, property transactions, loans, leases, family property arrangements, commercial dealings, and civil litigation. In practical terms, clear drafting, proper authority, lawful terms, written evidence, timely demands, and good-faith performance are the best protections against disputes.