Quick answer

Before signing a contract, confirm who the parties are, whether they have legal capacity and authority, exactly what each side must do, when performance and payment are due, what happens if something goes wrong, and whether the law requires a particular form, approval, notarization, registration, or disclosure. Do not rely on assurances omitted from the final document.

Before enforcing a contract, confirm that it is valid and binding, you performed or properly offered to perform your obligations, a breach has occurred, all required notices and cure periods were observed, and the claim has not prescribed. Check whether the contract requires negotiation, mediation, arbitration, or a particular venue before court action.

Under the Civil Code, contractual obligations generally have the force of law between the parties and must be performed in good faith. Freedom of contract is not unlimited: a provision cannot violate law, morals, good customs, public order, or public policy. A signature does not cure illegality, lack of authority, defective consent, or failure to comply with a legally required form. See the Civil Code, particularly Articles 1159, 1306 and 1318.

Verify the parties and their authority

For an individual

Check the person’s:

full legal name, address, and government-issued identification;
age and legal capacity;
civil status when marital or community property may be affected;
ownership of any property being sold, leased, mortgaged, or used as security; and
authority to act for another person.

If someone signs through an attorney-in-fact, inspect the special power of attorney and confirm that it expressly covers the transaction. The Civil Code requires special authority for important acts such as selling or acquiring immovable property, borrowing or lending money, compromising claims, submitting disputes to arbitration, and creating or transferring real rights over immovable property.

An agent’s authority to sell land must be in writing; otherwise, the sale is void under Article 1874 of the Civil Code.

For a corporation, partnership, association, or cooperative

Verify:

the entity’s exact registered name and current status;
its registration documents and principal address;
whether the transaction falls within its lawful powers;
the signatory’s position and identity; and
the board resolution, secretary’s certificate, partnership authority, or other document authorizing the transaction and signatory.

A job title or company email address does not always prove authority. Ask whether approval by the board, shareholders, partners, regulator, lender, or another contracting party is required.

If a person signs in a representative capacity, the signature block should identify both the entity and the representative’s position. Avoid wording that could unintentionally make the representative personally liable.

Confirm that a valid contract exists

A contract generally requires:

consent of the contracting parties;
a definite object or subject matter; and
a lawful cause or consideration.

The parties must agree on the essential terms. An “agreement to agree” may be difficult to enforce if price, scope, quantity, property, or another essential matter remains indefinite and no objective method exists for determining it.

The contract should also satisfy these points:

The promised act, service, or property is lawful and possible.
The subject matter is identified or objectively determinable.
Obligations are not left entirely to the uncontrolled will of one party.
Consent was not obtained through mistake, violence, intimidation, undue influence, or fraud.
Neither side concealed a fact that it had a legal duty to disclose.
There is no simulated transaction or unlawful purpose.

Contracts involving minors or persons unable to give valid consent require special attention. Depending on the circumstances, the contract may be voidable rather than automatically void. Ratification, restitution, and the protection given to an incapacitated party are fact-dependent.

Put every material promise in the document

A workable contract should answer, without guesswork:

What must each party deliver or perform?
What specifications or quality standards apply?
Where and when must performance occur?
Who decides whether the work is acceptable?
What objective acceptance criteria apply?
How much is payable, and are taxes included?
What are the payment method, schedule, milestones, and documentary requirements?
Who bears transportation, insurance, permit, currency, and tax risks?
What happens if performance is late, defective, incomplete, or impossible?
Is there a correction or cure period?
When may either party suspend or terminate?
What obligations survive termination?

Attach final plans, technical specifications, inventories, schedules, quotations, and approved proposals. Number and identify every annex. Remove blanks, inconsistent dates, unexplained abbreviations, and references to documents you have not received.

If the contract contains an “entire agreement” clause, earlier oral assurances or messages may not become enforceable contractual promises. The Rules on Evidence generally restrict attempts to alter a written agreement with prior or contemporaneous outside terms, subject to recognized exceptions such as ambiguity, mistake, imperfection, failure to express the parties’ true agreement, validity issues, or later agreements. See the Rules on Evidence, Rule 130.

Check the form required by law

Writing is not always required—but sometimes it is essential

As a general rule, contracts are obligatory regardless of form if their essential requisites exist. However, a statute may require writing, a public instrument, registration, or another form either for validity, enforceability, proof, or effect against third persons.

Examples requiring careful review include:

sales or transfers of land and interests in land;
authority given to an agent to sell land;
mortgages and other registrable interests;
donations, particularly donations of immovable property;
long-term leases;
guarantees;
credit transactions and stipulated interest;
marriage settlements;
government contracts; and
transactions governed by specialized regulatory laws.

The Statute of Frauds in Article 1403 generally concerns certain executory agreements, including specified agreements not to be performed within one year and sales of real property or interests in it. It is a rule on enforceability, not a universal rule that every unwritten agreement is void. Acceptance of benefits or partial performance may materially change the analysis.

Do not treat oral agreements involving substantial money or property as safe merely because they might eventually be proved. Reduce the complete agreement to writing before performance begins.

Notarization has a specific purpose

Not every contract must be notarized. Proper notarization ordinarily converts a private document into a public document and strengthens its evidentiary standing. It does not supply missing consent, authority, a lawful object, or another essential requirement, and it cannot make an illegal contract valid.

Each signatory should personally appear before the notary, present competent evidence of identity, acknowledge signing the document, and sign in the manner required by the notarial rules. Never sign a blank or incomplete document or agree to backdating.

Some transactions need notarization and registration to bind third persons or produce their intended effect. For land transactions, obtain professional advice on the title, taxes, registration, and required government approvals rather than relying on notarization alone.

Electronic contracts can be enforceable

An electronic document or signature cannot be denied legal effect solely because it is electronic. Its reliability, attribution, integrity, accessibility, and compliance with any special form required for the particular transaction still matter under the Electronic Commerce Act, Republic Act No. 8792.

Preserve the complete electronic record, not merely a cropped screenshot. Keep:

the original email or message thread;
attachments and final contract version;
timestamps and transmission records;
account and signatory information;
audit trails, certificates, or verification logs;
records showing acceptance and performance; and
a reliable backup that preserves the document’s integrity.

Examine the provisions that create the greatest risk

Price, interest, penalties, and damages

Confirm how the total price is computed and whether VAT, withholding taxes, duties, reimbursements, escalation, and foreign-exchange adjustments are included.

Interest must be expressly stipulated in writing to be recoverable as conventional interest under Article 1956 of the Civil Code. Even a written interest or penalty clause may be judicially reduced when it is iniquitous, unconscionable, or excessive. Courts may also equitably reduce a penalty when the principal obligation was partly or irregularly performed. Do not assume that any percentage is enforceable merely because both parties signed it.

Distinguish among:

interest for the use or forbearance of money;
interest or damages resulting from delay;
a penalty clause;
liquidated damages; and
reimbursement of actual expenses or attorney’s fees.

These have different legal foundations and should not be carelessly combined.

Default and demand

Under Article 1169, delay generally begins after judicial or extrajudicial demand, unless demand is unnecessary because:

the obligation or the law expressly provides otherwise;
time was a controlling motive for the agreement; or
demand would be useless because performance has become impossible through the debtor’s act.

A contract should state when default begins and how notices must be delivered. Even where demand may arguably be unnecessary, a clear written demand often helps establish the breach, amount due, deadline, and requested remedy.

Termination and cancellation

Check whether termination is allowed:

only for a material breach;
after written notice and a cure period;
for convenience;
upon insolvency, illegality, or loss of a permit;
when a force-majeure event continues beyond a stated period; or
upon failure to meet an objective milestone.

Article 1191 recognizes resolution in reciprocal obligations when one party fails to comply, but whether unilateral extrajudicial termination is effective can depend on the contract, the seriousness of the breach, notice, and the facts. A party who wrongfully terminates may itself become liable.

Specify the consequences of termination: return of property, final accounting, refunds, payment for accepted work, deletion or return of confidential information, transition assistance, and survival of dispute, confidentiality, warranty, and indemnity clauses.

Force majeure and change of circumstances

A force-majeure clause should define the covered event and require prompt notice, mitigation, evidence, and resumption of performance. It should allocate responsibility for payment, delay, additional cost, and termination.

An unexpected difficulty or increase in cost does not automatically excuse performance. Under Article 1174, fortuitous events generally do not create liability, but exceptions apply when the law or contract provides otherwise, the obligation’s nature involves an assumption of risk, or the debtor was already in delay. Impossibility, extraordinary difficulty, and ordinary commercial hardship are not interchangeable.

Indemnity, warranty, and limitation of liability

Identify:

what losses are covered;
whether third-party claims are included;
who controls the defense or settlement;
whether notice is required;
whether liability is capped;
what claims are excluded from the cap; and
whether consequential, indirect, or lost-profit damages are excluded.

A broadly worded waiver does not necessarily excuse fraud, bad faith, grossly negligent conduct, illegality, or liability that the law does not permit a party to waive.

Renewal, exclusivity, and non-compete restrictions

Watch for automatic renewal, short cancellation windows, minimum purchases, exclusivity, unilateral price changes, and post-contract restrictions. Any restraint on employment, trade, or competition must be assessed according to its scope, duration, territory, purpose, and applicable law.

Dispute-resolution clause

Determine whether the agreement requires:

internal escalation or negotiation;
mediation;
arbitration;
court proceedings;
a particular place or venue;
a specific governing law; or
recovery of attorney’s fees and costs.

An arbitration clause can require the parties to arbitrate instead of litigating the merits in court. Under the Alternative Dispute Resolution Act, Republic Act No. 9285, courts generally refer covered disputes to arbitration when a valid arbitration agreement applies, subject to statutory exceptions. Check the arbitration institution or rules, seat, number of arbitrators, language, interim-relief procedure, and allocation of fees.

A foreign governing-law or forum clause should not be accepted casually. Mandatory Philippine laws may still apply, and foreign litigation or arbitration can make enforcement far more expensive.

Conduct transaction-specific due diligence

A sound contract cannot compensate for a defective underlying transaction. Depending on the deal, verify:

title and registered encumbrances over land;
tax declarations, zoning, permits, and possession;
ownership and liens over vehicles or equipment;
licenses and regulatory approvals;
intellectual-property ownership;
pending litigation or insolvency;
financial capacity and credit support;
insurance coverage;
technical qualifications and contractor licensing;
consumer disclosures, cooling-off rights, or refund rules;
employment-law restrictions;
procurement requirements; and
data-privacy and cybersecurity obligations.

Special laws may override the contract. Examples include labor standards, consumer protection, condominium and subdivision laws, banking and financial-consumer rules, insurance law, public procurement rules, tenancy laws, intellectual-property statutes, and data-protection requirements. A clause saying that a party “waives all rights” does not necessarily waive mandatory statutory protections.

For financial products and services, providers and consumers may also be subject to the protections, disclosure duties, complaint mechanisms, and regulatory powers established by the Financial Products and Services Consumer Protection Act, Republic Act No. 11765.

Before signing

Use this final review sequence:

Obtain the complete final version and every attachment.
Verify the parties’ identities, ownership, capacity, and authority.
Compare the contract with the approved proposal and negotiations.
Resolve conflicting provisions and defined terms.
Confirm dates, amounts, milestones, bank details, and tax treatment.
Check conditions that must occur before the contract becomes effective.
Review default, termination, penalty, indemnity, and dispute clauses.
Confirm all legally required approvals, forms, notarization, and registration.
Make handwritten changes only if every party initials them.
Have all parties sign identical copies and complete every blank.
Obtain the signed contract, annexes, authority documents, and acknowledgment receipts.
Calendar payment dates, renewal windows, deliverables, notice periods, and limitation deadlines.

Do not sign merely because someone says the document is “standard” or must be signed immediately. Standard forms can contain highly one-sided obligations.

How to enforce a breached contract

1. Read the operative provisions again

Identify:

the precise obligation breached;
its due date;
conditions precedent;
acceptance or inspection procedures;
required notice and cure periods;
termination rights;
dispute-resolution steps; and
the governing-law and venue clauses.

Determine whether your own prior or reciprocal obligation was performed, waived, excused, or properly offered. A party who is itself in substantial breach may have difficulty enforcing reciprocal performance.

2. Preserve evidence

Keep originals or reliable copies of:

the signed contract and every annex or amendment;
authority documents and identification records;
invoices, official receipts, statements of account, and proof of payment;
delivery receipts, inspection reports, photographs, and inventories;
emails, messages, call records, and meeting minutes;
notices, courier receipts, registry returns, and acknowledgment records;
electronic audit trails and metadata;
proof of defects, replacement costs, or lost property; and
evidence of efforts to reduce the loss.

Do not alter files, fabricate acknowledgment receipts, secretly access another person’s account, or threaten public humiliation or criminal prosecution merely to collect a civil debt.

3. Quantify the claim

Prepare a clear computation separating:

unpaid principal;
contractual interest;
delay-related interest or damages;
penalties or liquidated damages;
accepted credits and partial payments;
taxes;
documented expenses; and
any claim for attorney’s fees.

Attorney’s fees are not automatically recoverable merely because litigation occurred. They require a legal or contractual basis and remain subject to judicial review.

4. Send a proper written demand

Unless immediate protective relief is necessary, send a demand that states:

the contract and obligation involved;
the act or omission constituting breach;
the amount or performance required;
the computation and supporting documents;
the contractual or reasonable deadline to cure;
where and how compliance must be made; and
the action contemplated if the breach is not cured.

Use the notice address and delivery method specified in the contract. Retain proof of delivery or attempted delivery. Avoid exaggerating the claim or making unsupported accusations.

5. Follow mandatory preliminary procedures

If the dispute falls within the Katarungang Pambarangay system, prior barangay conciliation may be a condition before filing in court. Coverage depends on factors including the parties, their actual residences, the nature of the dispute, and statutory exceptions. Section 412 of the Local Government Code should be checked against the particular facts.

A valid settlement reached through barangay proceedings can acquire the force and effect provided by law. Do not ignore a summons, settlement, repudiation deadline, or certification to file action.

If the contract requires mediation or arbitration, initiate the correct procedure rather than immediately filing an ordinary civil case. Court filing in disregard of a valid arbitration clause can produce delay and additional expense.

6. Choose the proper remedy and forum

Possible remedies include:

payment or specific performance;
repair, replacement, or completion;
resolution or rescission, depending on the legal basis;
restitution or refund;
damages;
enforcement of security;
injunction or another provisional remedy; and
a declaration concerning the parties’ rights.

The correct court or tribunal depends on the nature and value of the claim, the parties, the property involved, and any special law or valid arbitration agreement.

Money claims not exceeding the current small-claims limit may qualify for the Supreme Court’s streamlined small-claims procedure. The current rules cover specified money claims of up to ₱1 million, exclusive of interest and costs. Confirm that the claim falls within the listed categories and use the official forms and filing instructions on the Supreme Court Small Claims page and the Rules on Expedited Procedures in the First Level Courts.

Do not miss the prescriptive period

Under Article 1144 of the Civil Code, actions based on a written contract generally must be brought within 10 years from accrual. Article 1145 generally gives six years for actions based on an oral contract or quasi-contract. Other claims and special statutes may have different periods.

Determining when a cause of action accrued can be complicated by installment obligations, acceleration clauses, continuing performance, repudiation, demand requirements, acknowledgment, and partial payment.

Article 1155 provides that prescription is interrupted when an action is filed in court, when there is a written extrajudicial demand by the creditor, or when the debtor gives a written acknowledgment of the debt. Do not assume that phone calls, informal follow-ups, negotiations, or an unsigned payment proposal safely preserve a claim.

Seek advice well before the apparent deadline. Filing in the wrong forum or relying on an ineffective demand can create serious prescription issues.

Common mistakes

Signing without reading the annexes or terms incorporated by reference.
Trusting the salesperson’s oral promise instead of adding it to the contract.
Failing to verify ownership or the signatory’s authority.
Assuming notarization proves that the transaction is lawful or genuine.
Leaving the scope, price, completion date, or acceptance criteria vague.
Accepting unilateral rights to change the price, scope, or deadline.
Ignoring automatic renewal or short cancellation periods.
Treating every breach as a valid reason for immediate cancellation.
Declaring default without complying with the agreed notice procedure.
Continuing to perform after a serious breach without reserving rights.
Accepting late or defective performance without documenting objections.
Destroying messages, originals, metadata, or proof of delivery.
Waiting until prescription is about to expire.
Filing in court despite a mandatory barangay or arbitration process.
Using threats, public shaming, or fabricated criminal allegations as collection tactics.

When legal help is urgent

Obtain prompt legal assistance when:

land, a home, inheritance, or major business assets are involved;
someone is selling or mortgaging property without clear authority;
signatures, documents, or corporate approvals may be forged;
assets are being concealed, transferred, or removed;
a cancellation, renewal, option, protest, appeal, or prescriptive deadline is near;
the other party has become insolvent or entered rehabilitation proceedings;
immediate injunctive relief may be needed;
a foreign party, foreign law, or overseas enforcement is involved;
the contract contains arbitration, confession-of-judgment, acceleration, personal-guarantee, or broad indemnity provisions;
a government entity or regulated industry is involved; or
signing could create personal, criminal, tax, regulatory, or professional exposure.

Frequently asked questions

Is a contract valid if it is not notarized?

Often, yes. Many contracts are valid upon consent even without notarization. However, the law may require a particular form for validity, enforceability, registration, or effect against third persons. The answer depends on the transaction.

Is an oral contract enforceable?

Some oral contracts are enforceable, but proof is harder and the Statute of Frauds may affect certain agreements that remain executory. Special transactions also require writing or another prescribed form.

Can I cancel simply because the other party breached?

Not every breach justifies termination or resolution. The breach may need to be substantial, and the contract may require notice and an opportunity to cure. Wrongful cancellation can itself be a breach.

Does a demand letter have to come from a lawyer?

Generally, no. A creditor may send a demand. What matters is that it accurately identifies the obligation, breach, required compliance, deadline, and manner of delivery. Legal review is advisable for substantial or disputed claims.

Can screenshots prove an online contract?

They may be evidence, but screenshots alone can omit context and may be challenged. Preserve the original electronic records, complete conversation, attachments, account details, timestamps, audit trails, and proof of performance.

Can the contract impose any interest or penalty the parties choose?

No. Conventional interest must be in writing, and courts may reduce an excessive or unconscionable interest or penalty. Mandatory laws and public policy also limit contractual freedom.

Can a party enforce only the favorable provisions and ignore its own duties?

Generally, no. Contracts bind both parties, and reciprocal obligations may require the enforcing party to prove its own performance, proper tender, waiver, or legal excuse.

Does a written demand stop prescription?

A written extrajudicial demand is one of the acts recognized by Article 1155 as interrupting prescription. Whether a particular communication qualifies—and how prescription thereafter runs—should be assessed from its wording, delivery, underlying obligation, and applicable special law.

Official sources

This article provides general Philippine legal information, not legal advice for a particular contract or dispute. Contract validity and remedies depend on the complete document, the parties, the transaction, the evidence, and any applicable special law. Sources and procedures were checked as of August 24, 2026.