I. Introduction
A Special Power of Attorney or SPA is one of the most commonly used legal documents in the Philippines. It is used when a person, called the principal, authorizes another person, called the agent or attorney-in-fact, to perform one or more specific acts on the principal’s behalf.
In Philippine law, an SPA is important because not all authority can be presumed. For many transactions, especially those involving property, money, loans, sales, litigation-related acts, and other acts of strict dominion, the law requires specific and express authority. A general authorization is often insufficient.
The subject is therefore not merely about document formatting. The legal validity and effectiveness of an SPA depend on the Civil Code, the nature of the act authorized, notarization rules, evidentiary requirements, and the requirements of the government office, court, bank, embassy, registry, or private institution where the SPA will be used.
This article explains what an SPA is, when it is required, its legal basis, essential contents, formal requirements, notarization, use abroad, expiration, revocation, risks, and practical legal considerations in the Philippine context.
II. Legal Basis of a Special Power of Attorney
The main legal basis of an SPA in the Philippines is found in the Civil Code of the Philippines, particularly the provisions on agency.
Agency is a contract by which one person binds himself to render some service or do something in representation or on behalf of another, with the consent or authority of the latter. Through agency, an agent may lawfully bind the principal in transactions within the scope of authority granted.
However, the Civil Code distinguishes between:
- acts of administration, and
- acts of strict dominion or those requiring special authority.
For ordinary acts of administration, a general authority may sometimes suffice. But for more serious or dispositive acts, the law requires a special power of attorney.
This is why an SPA is not just a convenience document. It is often a legal necessity.
III. Difference Between a General Power of Attorney and a Special Power of Attorney
A General Power of Attorney (GPA) gives broad authority to the agent to manage affairs of the principal, usually in a general or continuing way, subject to limitations in the document and the law.
A Special Power of Attorney, by contrast, gives authority only for specific acts or transactions. It is narrower, more precise, and often required by law for acts that cannot be left to implication.
In Philippine practice, many offices and institutions prefer or require an SPA because it identifies:
- the specific transaction,
- the property or subject matter,
- the limits of authority,
- and the identity of the parties.
A GPA cannot always substitute for an SPA, especially where the law expressly demands special authority.
IV. Why Special Authority Is Required
Philippine law requires special authority for certain acts because these acts can seriously affect the property rights, contractual rights, and legal interests of the principal.
The law does not lightly presume that an agent may:
- sell land,
- mortgage property,
- borrow money in the principal’s name,
- compromise claims,
- waive rights,
- make gifts,
- or bind the principal in extraordinary transactions.
The policy is protective. Special authority reduces the risk of fraud, abuse, overreach, or unintended disposal of rights.
Thus, the more serious the legal consequence of the act, the more likely it is that an SPA is needed.
V. Acts That Require a Special Power of Attorney
Under Philippine law, a special power of attorney is generally required for acts such as the following:
A. Sale of real property
An agent cannot validly sell land or any interest in real property on behalf of the principal without authority that is specific enough for the transaction. Sale of real property through an agent generally requires authority in writing, and in practice this is done through an SPA.
B. Mortgage of real or personal property
Authority to mortgage property is not lightly inferred. If the agent is to create a mortgage over the principal’s property, that power should be specifically granted.
C. Lease of property beyond ordinary administration
Certain leases, especially long-term ones, may require special authority because they go beyond routine management.
D. Making gifts
The power to make gifts on behalf of the principal must be expressly conferred, and even then the law may restrict it.
E. Borrowing or loan transactions
If the agent will obtain a loan in the principal’s name or bind the principal in a credit transaction, express authority is generally necessary.
F. Payment or acknowledgment of obligations in specific contexts
Depending on the nature of the obligation and the institution involved, an SPA may be required before an agent may receive money, settle accounts, or acknowledge debts on behalf of another.
G. Entering into compromise agreements
The authority to compromise, settle, waive, or submit to arbitration is not presumed. It usually requires a special grant of authority.
H. Waiving rights
Waiver, renunciation, remission, or release of rights is a serious legal act and usually requires express authorization.
I. Appearance or representation in specific proceedings or transactions
An SPA may be required for:
- claiming documents,
- transacting with the Registry of Deeds,
- processing transfer certificates,
- dealing with government offices,
- receiving titles,
- obtaining tax clearances,
- claiming checks, proceeds, benefits, or pensions,
- and similar acts.
J. Acts of strict dominion
Any act involving ownership rights, alienation, encumbrance, or surrender of substantial rights may require special authority.
VI. When an SPA Is Commonly Used in the Philippines
In actual Philippine practice, SPAs are commonly used for:
- sale of land, house and lot, or condominium units;
- purchase of property;
- transfer of title;
- execution of deeds of sale;
- processing tax declarations and tax clearances;
- dealing with the BIR, Registry of Deeds, Assessor’s Office, and Treasurer’s Office;
- claiming bank documents or deposits, where allowed by the bank;
- receiving checks or proceeds;
- vehicle sale and transfer with the Land Transportation Office;
- business registration and permit processing;
- securing birth, marriage, or death certificates in some situations;
- SSS, GSIS, Pag-IBIG, PhilHealth, and pension-related claims, subject to agency rules;
- court-related representation in non-lawyer, non-appearance-limited matters where allowed;
- extrajudicial settlement transactions;
- partition and estate-related documents;
- immigration or consular document processing;
- school-related transactions for minors or absent parents;
- and overseas transactions by Filipinos abroad through representatives in the Philippines.
Even where the law does not always expressly say “SPA,” institutions often require one as proof of authority.
VII. Essential Requirements of a Valid SPA
For an SPA to be legally effective in the Philippines, certain requirements must be present.
A. Capacity of the principal
The principal must have legal capacity to give consent. This means the principal must:
- be of legal age, unless the law allows representation through a guardian or parent,
- be of sound mind,
- and have authority over the right or property involved.
A minor cannot ordinarily execute an SPA in the same way an adult can. If the principal lacks capacity, the SPA may be void or voidable depending on the facts.
B. Consent
Agency is founded on consent. The principal must voluntarily authorize the agent. Consent obtained by fraud, intimidation, undue influence, or mistake may invalidate the SPA or the transaction arising from it.
C. Lawful object
The act authorized must be lawful. An SPA cannot validly authorize an illegal act.
D. Specificity of authority
This is one of the most important requirements. An SPA must clearly identify the act or acts the agent is authorized to perform.
The authority should not be vague. For example, “to manage my property” may not be enough to sell a parcel of land. If the purpose is to sell a specific property, the SPA should identify:
- the location,
- title number if available,
- tax declaration or other identifying details,
- and the specific power to sell, sign, receive payment, and process transfer, if those are intended.
E. Written form where required
Certain acts must be in writing, and in practice an SPA is almost always written. For many transactions, especially involving real property, a verbal authority is not enough.
F. Signature of the principal
The principal must sign the SPA. If the principal cannot sign, additional formalities may be required, such as signing by mark and witness requirements, depending on the notarial rules and circumstances.
G. Acceptance by the agent
As a contract of agency, acceptance matters. In many practical SPA forms, the agent does not always sign the instrument, but acceptance may be express or implied from the agent’s acts. Still, in sensitive transactions, having the agent sign can be useful for clarity.
VIII. Contents of a Proper SPA
A Philippine SPA should be carefully drafted. At minimum, it usually includes:
A. Title
The document is typically entitled Special Power of Attorney.
B. Date and place of execution
The date and place should be stated.
C. Full name and details of the principal
It is good practice to include:
- full legal name,
- citizenship,
- civil status,
- age,
- address,
- and sometimes passport or government ID details.
D. Full name and details of the agent or attorney-in-fact
Likewise, the SPA should clearly identify the agent.
E. Statement of appointment
The principal should expressly appoint the named person as attorney-in-fact.
F. Specific powers granted
This is the heart of the SPA. The powers must be stated with enough detail to cover the intended transaction and nothing more than what the principal wants to allow.
G. Description of the property or subject matter
If the SPA concerns property, the description should be specific. If it concerns bank transactions, claim of benefits, sale of a vehicle, or estate settlement, the subject should also be clearly identified.
H. Authority to sign documents
The SPA should specify whether the agent may sign:
- deeds,
- receipts,
- applications,
- affidavits,
- declarations,
- tax forms,
- transfer documents,
- and other papers necessary to complete the authorized act.
I. Authority to receive money or proceeds
If the agent is authorized not only to sell but also to receive payment, this should be expressly stated. Authority to sell does not always automatically imply authority to receive and keep the proceeds without question.
J. Authority to substitute or delegate
If the principal wants to allow the agent to appoint a substitute or sub-agent, the SPA should expressly say so. Otherwise, substitution may not be allowed or may expose the agent to liability.
K. Duration or validity period
The SPA may state whether it is:
- for one transaction only,
- valid until revoked,
- valid until a specified date,
- or valid until completion of the stated act.
L. Revocation clause
Some SPAs state that the authority remains effective until revoked in writing or until the purpose is fulfilled.
M. Signature and notarization portion
The document usually ends with the principal’s signature and a notarial acknowledgment.
IX. Must an SPA Be Notarized?
A. General rule in practice
In the Philippines, an SPA is usually notarized, and for many important transactions it effectively needs to be notarized to be accepted by government offices, banks, registries, or private institutions.
B. Why notarization matters
Notarization converts a private document into a public document. This has important legal consequences:
- it gives the document greater evidentiary weight;
- it makes the document admissible without further proof of authenticity, subject to rules of evidence;
- it is commonly required for registrable and formal transactions;
- it reassures third parties that the principal personally appeared before the notary and acknowledged the document.
C. Transactions where notarization is practically essential
Notarization is especially important for SPAs involving:
- sale or mortgage of real property,
- registry transactions,
- transfer of title,
- tax-related property processing,
- banking or claims transactions,
- corporate dealings,
- government transactions,
- and legal documents meant for official filing.
D. Can an unnotarized SPA ever be valid?
As between the parties, there may be situations where a private written authority has some legal effect depending on the act involved. But in Philippine practice, for significant transactions, an unnotarized SPA is often rejected by the relevant institution and may be insufficient in evidence or form.
So while the strict answer can depend on the act involved, the practical legal answer is that an SPA should generally be notarized.
X. Notarial Requirements
An SPA notarized in the Philippines must comply with the Rules on Notarial Practice.
A. Personal appearance
The principal must personally appear before the notary public.
B. Competent evidence of identity
The principal must present valid proof of identity. The notary must verify identity through competent evidence, such as government-issued identification.
C. Acknowledgment
The principal acknowledges that the SPA is his or her voluntary act and deed.
D. Notarial certificate
The notary completes the acknowledgment portion, signs, seals, and enters the act in the notarial register.
E. No notarization without appearance
A document should not be validly notarized if the principal did not personally appear. Fake or irregular notarization can seriously affect enforceability and may expose parties and the notary to legal liability.
XI. SPA Executed Abroad
Many Filipinos execute SPAs while outside the Philippines. This is very common among overseas Filipino workers, immigrants, foreign-based heirs, and non-resident property owners.
A. Consularized or acknowledged before a Philippine consular officer
Traditionally, a Filipino abroad could execute the SPA before a Philippine embassy or consulate, where the consular officer performs a function similar to notarization for use in the Philippines.
This remains a recognized route.
B. Notarized abroad and apostilled
If executed in a foreign country that is part of the Apostille system, the SPA may generally be notarized abroad and then apostilled by the competent foreign authority so that it can be used in the Philippines, subject to Philippine acceptance rules.
C. If not apostilled or consularized
A foreign-executed SPA that is neither properly acknowledged before a Philippine consular officer nor properly apostilled may face rejection in the Philippines.
D. Translation
If the SPA is in a foreign language, an official or properly authenticated English translation may be required for Philippine use.
E. Local office requirements still matter
Even if a foreign-executed SPA is properly notarized and apostilled, the receiving office in the Philippines may still require:
- identification documents,
- specimen signatures,
- tax numbers,
- supporting title documents,
- or institution-specific forms.
XII. SPA for Sale of Real Property
This is one of the most important Philippine applications of an SPA.
A. Written authority is essential
An agent who sells real property for the principal must have authority that is specific enough and in writing.
B. Property must be identifiable
The SPA should identify the property with sufficient certainty. This may include:
- Transfer Certificate of Title number,
- Condominium Certificate of Title number,
- Tax Declaration number,
- location and area,
- technical description if necessary.
C. Specific power to sell
The SPA should clearly authorize the agent to:
- offer for sale,
- negotiate price,
- execute the deed of absolute sale or deed of conditional sale,
- receive purchase price if intended,
- sign receipts,
- process BIR, Registry of Deeds, Assessor, Treasurer, and related documents,
- and deliver possession if intended.
D. Caution on authority to receive payment
If the SPA authorizes sale but says nothing about receiving payment, disputes can arise. It is safer to state explicitly whether the agent may receive the full purchase price and issue receipts.
E. Caution on self-dealing
If the agent will buy the property personally or act for both sides of the transaction, conflict-of-interest issues can arise. Such transactions are legally sensitive and may be challenged.
XIII. SPA for Mortgage or Loan
If the agent is to mortgage the principal’s property or obtain a loan in the principal’s name:
- the SPA should expressly authorize mortgage or borrowing;
- the amount or range may be specified where appropriate;
- the collateral property should be identified;
- the authority to sign promissory notes, real estate mortgages, chattel mortgages, disclosures, and related bank papers should be explicit.
Banks are usually strict. They may reject vague SPAs.
XIV. SPA for Court and Litigation Matters
A. Distinguish SPA from counsel’s authority
In Philippine procedure, a lawyer handling a case generally acts as counsel by virtue of engagement and appearance. But certain acts require special authority from the client, such as:
- compromise,
- submission to arbitration,
- waiver,
- abandonment of appeal,
- or settlement of claims.
This authority may be embodied in an SPA or in another written special authority.
B. Non-lawyer representation
An SPA does not generally authorize a non-lawyer to practice law or appear as counsel in court in the full legal sense where the law requires a lawyer. Representation rules depend on the forum and applicable procedural rules.
C. Compromise agreements
If the attorney-in-fact or lawyer is to enter into a compromise on behalf of the principal, special authority should be clear and express.
XV. SPA for Estate, Inheritance, and Settlement Matters
SPAs are often used by heirs who cannot personally attend settlement proceedings or property transfers.
The SPA may authorize the agent to:
- participate in extrajudicial settlement,
- sign deeds of partition,
- receive shares,
- process estate taxes,
- represent the heir before the BIR and Registry of Deeds,
- sign affidavits and other settlement documents.
Because estate matters involve disposition of rights, specificity is important. A vague SPA may be rejected.
XVI. SPA for Banking and Financial Transactions
Banks often require their own form or insist on very specific wording.
An SPA for banking purposes may need to state whether the agent may:
- withdraw funds,
- deposit checks,
- open or close accounts,
- receive bank statements,
- encash checks,
- obtain manager’s checks,
- apply for loans,
- preterminate deposits,
- access safety deposit boxes.
Banks may also require:
- recent notarization,
- specimen signatures,
- principal’s valid IDs,
- confirmation procedures,
- in-person verification,
- or internal legal approval.
Thus, an SPA acceptable in general law may still be insufficient for bank policy purposes.
XVII. Can an SPA Be Limited or Conditional?
Yes. An SPA may be drafted to impose limitations.
Examples:
- authority only for one parcel of land;
- authority only to sign but not to receive money;
- authority only up to a certain amount;
- authority only until a stated date;
- authority subject to prior written approval by the principal;
- authority excluding sale below a minimum price.
The principal has wide discretion to define the scope, so long as the object is lawful.
XVIII. Can the Agent Delegate the Authority?
As a rule, an agent cannot freely appoint a substitute unless:
- the principal expressly authorizes substitution,
- or the nature of the agency permits it under the law.
If substitution is unauthorized, the agent may incur liability. For this reason, SPA clauses often state whether the attorney-in-fact has power to appoint a substitute or sub-attorney.
XIX. Duration of an SPA
An SPA does not always last forever. Its duration depends on its terms and on the law.
A. It may expire by its own terms
If the document says it is valid only until a certain date or only until completion of a transaction, it ends accordingly.
B. It may end upon completion of the purpose
If the SPA is for a single transaction, the agency may end once that transaction is completed.
C. It may be revocable at will
As a general rule, agency is revocable by the principal, subject to recognized exceptions.
D. It may terminate by operation of law
Agency may also end by:
- death of the principal,
- death of the agent,
- civil interdiction,
- insanity,
- insolvency in proper cases,
- withdrawal by the agent,
- destruction of the subject matter,
- or other causes recognized by law.
E. Death is highly important
As a rule, the death of the principal extinguishes the agency. Transactions done after death can become legally problematic, subject to narrow exceptions under law. This is crucial in property sales and estate disputes.
XX. Revocation of an SPA
A. How revocation is done
The principal may revoke an SPA by executing a Revocation of Special Power of Attorney or another clear written revocation.
B. Notice is important
Revocation should be communicated to:
- the agent,
- third persons dealing with the agent,
- and, where relevant, the office or institution where the SPA was filed or used.
C. Registration or annotation
If the SPA was used in a registrable transaction or recorded somewhere, the revocation should also be brought to the attention of the relevant office. Otherwise, third parties may still rely on the apparent authority of the agent.
D. Implied revocation
Revocation may also occur by conduct inconsistent with the continued authority, but written express revocation is safer.
XXI. Is the SPA Always Revocable?
Generally yes, but there are exceptions in agency law.
In some cases, an agency may be considered coupled with an interest or may be constituted in the common interest of the principal and agent, or of a third person. In such situations, the agency may not be freely revoked at will in the usual manner.
Still, the ordinary SPA used in daily Philippine transactions is generally revocable unless special circumstances exist.
XXII. Common Defects in Philippine SPAs
A Special Power of Attorney may fail or be challenged because of defects such as:
- vague description of authority;
- failure to identify the property or transaction;
- no notarization where practically or legally required;
- forged signature;
- fake notarization;
- principal did not personally appear before the notary;
- principal lacked capacity;
- document was executed under fraud or coercion;
- SPA already revoked;
- SPA expired by its terms;
- principal already died before the transaction;
- agent exceeded authority;
- receiving office requires a more specific form of authority;
- foreign SPA lacks proper apostille or consular acknowledgment.
XXIII. Risks of Overbroad SPAs
A broad SPA can expose the principal to serious risk.
An overbroad SPA may allow the agent to:
- dispose of property too freely,
- receive and misappropriate funds,
- bind the principal in unwanted obligations,
- compromise rights imprudently,
- or create confusion about the limits of authority.
Thus, from a legal drafting standpoint, the best SPA is usually not the broadest one, but the one that is precise, transaction-specific, and limited to what is truly necessary.
XXIV. Institutional Requirements Beyond the Civil Code
Even if an SPA is valid under general law, the institution where it will be used may impose additional requirements.
A. Registry of Deeds
May require notarized SPA with complete property details and supporting title documents.
B. BIR
May require authority to sign tax returns, receive assessments, and process transfer taxes or estate taxes.
C. Banks
May require recent notarization, internal forms, witness requirements, ID verification, or branch-specific review.
D. Government agencies
May prescribe their own authorization formats or require original copies only.
E. Developers, condominiums, and private corporations
May ask for board approvals, secretary’s certificates, IDs, and other supporting papers in addition to the SPA.
This means “legal sufficiency” and “institutional acceptability” are related but not always identical.
XXV. SPA Versus Authorization Letter
A simple authorization letter is not the same as a notarized SPA.
An authorization letter may be enough for minor acts such as:
- claiming a routine document,
- receiving a package,
- or handling small private matters,
if the receiving party accepts it.
But for more formal, valuable, or legally sensitive acts, an SPA is preferred or required. In Philippine practice, if the transaction touches on property, money, title, tax, inheritance, or formal legal rights, an SPA is usually the proper instrument.
XXVI. Corporate and Entity Context
If the principal is a corporation, partnership, or other juridical entity, the authority is usually not established by an SPA in the same way as an individual principal. Instead, the representative’s authority may need to be shown through:
- board resolution,
- secretary’s certificate,
- partnership authorization,
- bylaws-based authority,
- or corporate delegation documents.
Still, a corporation may also issue a special authorization instrument, depending on the transaction.
XXVII. Evidentiary Value of a Notarized SPA
A notarized SPA is a public document. As evidence, it enjoys a stronger presumption of regularity than a private document, though it is not immune from attack.
It may still be challenged on grounds such as:
- forgery,
- lack of authority,
- falsification,
- defective notarization,
- or fraud.
But unless successfully impugned, a notarized SPA is generally given substantial evidentiary credit.
XXVIII. Practical Drafting Principles
A well-drafted Philippine SPA should observe these principles:
- identify the principal and agent completely;
- state the purpose exactly;
- describe the property or transaction specifically;
- list the powers one by one;
- state whether the agent may receive money;
- state whether substitution is allowed;
- set time limits where appropriate;
- avoid unnecessary overbreadth;
- have it notarized properly;
- comply with the requirements of the office where it will be used.
XXIX. Sample Categories of SPA Powers
To understand how SPAs are structured, powers are often grouped into categories such as:
Property-related powers
- sell,
- mortgage,
- lease,
- receive payments,
- sign deeds,
- process title transfer.
Financial powers
- collect debts,
- withdraw funds,
- receive checks,
- pay taxes,
- settle accounts.
Administrative powers
- file applications,
- secure clearances,
- represent before agencies,
- submit documents.
Litigation-related powers
- compromise,
- settle,
- sign verification or certification where allowed and justified,
- deal with court-connected processes.
Each category should still be tied to a concrete purpose.
XXX. Interaction With Fraud and Criminal Liability
Improper use of an SPA can result not only in civil disputes but also in criminal exposure.
Possible issues include:
- falsification of public documents,
- estafa,
- use of forged documents,
- perjury in supporting affidavits,
- illegal notarization,
- and fraudulent property transfers.
Because notarized SPAs are often relied upon in high-value transactions, abuse can lead to both civil and criminal cases.
XXXI. Can an SPA Cover Future Transactions?
Yes, but caution is needed. An SPA may authorize future acts if the authority is sufficiently clear. However, very broad future authority may create problems of interpretation, risk, and institutional rejection.
For major property transactions, the safer practice is often to execute a transaction-specific SPA.
XXXII. Is Witnessing Required Apart From Notarization?
In many notarized SPAs, separate instrumental witnesses are not always the central legal requirement in the way they are for wills. The more important requirement is proper notarization and acknowledgment. Still, some forms, institutions, or circumstances may call for witnesses, especially if the principal signs by mark or if extra evidentiary protection is desired.
XXXIII. Special Issues for Elderly or Infirm Principals
Where the principal is elderly, sick, bedridden, visually impaired, or otherwise vulnerable, greater care is needed.
Potential issues include:
- mental capacity,
- voluntariness,
- ability to understand the contents,
- authenticity of signature,
- proper notarization procedures,
- risk of undue influence.
These SPAs are more likely to be challenged if large properties or sums are involved.
XXXIV. Filipino Principal, Foreign Agent; Foreign Principal, Filipino Agent
Philippine law does not generally forbid appointing a foreigner as attorney-in-fact or a Filipino as attorney-in-fact for a foreign principal, provided the act itself is lawful and the authority is properly documented.
However, sector-specific restrictions may still apply. For example, the agent cannot do on behalf of the principal something that the principal legally cannot do. If the underlying transaction violates nationality restrictions or other laws, the SPA does not cure the defect.
XXXV. Special Power of Attorney and Tax Consequences
An SPA itself is not usually the taxable event in the same way as the sale or transfer it authorizes. But once used in transactions such as sale of real property, estate settlement, or donation-related actions, tax implications follow under the relevant tax laws.
The SPA should therefore be drafted in harmony with the intended tax filings and documentary chain, especially if the agent will represent the principal before the BIR.
XXXVI. Key Legal Principles Summarized
The law on SPA requirements in the Philippines may be summarized in these core rules:
- An SPA is required when the law demands specific and express authority, especially for acts of strict dominion.
- The authority must be clear, specific, and written.
- For most important Philippine transactions, the SPA should be notarized.
- A notarized SPA becomes a public document with stronger evidentiary value.
- If executed abroad, it should generally be acknowledged before a Philippine consular officer or properly apostilled, depending on the situation.
- The agent cannot act beyond the authority expressly granted.
- Death, revocation, expiration, or completion of purpose may terminate the SPA.
- Institutional requirements may be stricter than the minimum general law requirements.
- A vague or overbroad SPA creates risk.
- A forged or irregularly notarized SPA can lead to civil invalidity and criminal liability.
XXXVII. Conclusion
In the Philippines, a Special Power of Attorney is a legally significant instrument of delegated authority used when a person wants another to perform a specific legal act on his or her behalf. Its requirements are rooted in the law on agency, the rules on notarization, the formal needs of transactions involving property and money, and the evidentiary demands of public and private institutions.
A valid and effective SPA typically requires:
- a competent principal,
- voluntary consent,
- lawful purpose,
- clear and specific authority,
- written form,
- proper signature,
- and, in most important transactions, proper notarization.
In practice, the best Philippine SPA is one that is not merely signed, but carefully drafted, precise in scope, properly acknowledged, and tailored to the exact transaction for which it will be used. That is what gives it legal force, practical acceptability, and protection against dispute.