Quick answer

For an ordinary Philippine civil or contractual claim, there is no single mandatory form for a demand letter. It generally does not need to be written by a lawyer or notarized. A sound letter should:

Identify the correct parties and the legal or contractual obligation.
State what happened, what is overdue or breached, and how any amount was computed.
Make a clear, unconditional demand for a specific act.
Give the deadline required by the contract or law—or a reasonable, definite deadline if neither provides one.
State only remedies that are legally available.
Be delivered through a method that can later prove service and receipt.

A written extrajudicial demand can place an obligor in delay under Article 1169 of the Civil Code. It may also interrupt prescription under Article 1155. But a demand letter is not a judgment: it does not by itself prove the claim, authorize seizure of property, guarantee damages or attorney’s fees, or create criminal liability.

Special matters—including bounced checks, eviction, claims nearing prescription, and disputes requiring barangay conciliation—have additional rules. Do not use a generic template without adapting it to those rules.

Before drafting the letter

Confirm that the obligation is already enforceable

Review the contract, invoice, promissory note, lease, acknowledgment, purchase order, messages, receipts, and applicable law. Determine:

What performance was promised.
Who is legally responsible.
When performance became due.
Whether a condition must occur first.
Whether you performed, tendered performance, or remain ready to perform your own obligation.
Whether the contract requires prior notice, an opportunity to cure, mediation, arbitration, or another step.
Whether an acceleration clause permits you to demand the full balance.

Do not demand an unmatured amount or unilaterally accelerate installments unless the contract or law allows it. In reciprocal obligations, one party generally cannot place the other in delay while failing or refusing to perform their own corresponding obligation.

Identify the correct debtor

Use the person’s full legal name, not merely a nickname. For a business, determine whether the responsible party is:

An individual operating under a business name.
A partnership.
A corporation or other juridical entity.
A guarantor, surety, co-maker, or solidary debtor whose undertaking actually covers the claim.

A sole proprietorship is not a separate juridical person from its owner. A corporation ordinarily has a legal personality separate from its officers and shareholders. Do not demand payment personally from an officer merely because that person signed for the corporation unless the documents or law create personal liability.

If a representative will send the letter, state the representative’s authority. For significant claims, keep the relevant special power of attorney, board authority, secretary’s certificate, or engagement document.

Calculate the claim conservatively

Separate the following:

Principal.
Contractual interest.
Penalties or liquidated damages.
Credits and partial payments.
Reimbursable expenses.
The total as of a stated date.

Attach a ledger or computation when several invoices, payments, or interest periods are involved. Do not add “collection fees,” attorney’s fees, penalties, or interest simply to pressure the recipient.

Interest on a loan must generally be expressly stipulated in writing under Article 1956 of the Civil Code. Courts may impose legal interest in appropriate cases after default, but the proper basis, rate, and starting date depend on the obligation and the evidence. The prevailing legal rate is generally 6% per year, subject to the rules explained in Nacar v. Gallery Frames and later decisions. Excessive or unconscionable stipulated interest or penalties may be reduced.

Attorney’s fees are also not automatically recoverable. Article 2208 of the Civil Code requires a contractual or recognized legal basis, and any recoverable amount must be reasonable.

What the letter should contain

1. Date and method of delivery

Place the actual date at the top. If sending through several methods, identify them accurately, for example:

By personal delivery, registered mail, and email

Do not state that a method was used until it was actually used.

2. Complete recipient information

Include the recipient’s:

Full legal name or registered entity name.
Position, if addressed through an officer.
Contractual notice address.
Last known residential or business address.
Relevant account, contract, invoice, or property reference.

Follow the notice clause in the contract exactly. If it requires delivery to a particular address or by registered mail, comply even if the recipient commonly communicates through email or messaging apps.

3. A precise subject line

Examples include:

Formal demand for payment under Promissory Note dated [date]
Final demand to complete and deliver contracted work
Demand to return property described in [document]
Demand to pay rentals and vacate leased premises

The subject should reveal the transaction without exposing unnecessary personal information.

4. The factual and legal basis

State the material facts chronologically and neutrally:

The agreement or event that created the obligation.
The relevant date and promised performance.
What you performed or delivered.
When the other party’s performance became due.
The breach, nonpayment, or failure.
Any prior requests, responses, admissions, or partial payments.

Refer to supporting documents by date or number. Avoid insults, speculation, exaggerated accusations, and statements you cannot prove.

5. The exact demand

Use direct language. Examples:

I hereby formally demand payment of ₱[amount], representing [basis], no later than [date and time].

I hereby demand that you return [specifically described property] to [place] no later than [date].

I hereby demand that you complete the following contractual work: [specific items], in accordance with [contract provision], by [date].

If demanding several acts, list them separately. A vague request to “settle your obligation” may create unnecessary disputes over what compliance required.

6. A definite deadline

Use the period required by the contract or special law. If none applies, choose a reasonable period based on the nature of the obligation and state a calendar date.

There is no universal rule that every demand letter must give 5, 10, 15, or 30 days. A convenient deadline should not be described as a statutory period. Avoid ambiguous wording such as “within five days” without saying whether the period consists of calendar, business, or banking days and when counting begins.

A safer formulation is:

Please ensure that cleared payment is received no later than 5:00 p.m. on [date].

If a mandatory period runs from receipt, say so and keep proof of the date of actual receipt.

7. Payment or compliance instructions

Explain exactly how the recipient can comply:

Account name and authorized payment channel.
Address for delivery or turnover.
Person authorized to receive performance.
Documents or reference numbers to include.
Contact details for proposing a documented settlement.

Avoid requesting payment through an unrelated person’s account without a clear explanation and authority.

8. Consequences of noncompliance

State consequences firmly but accurately:

If you do not comply within the stated period, I may pursue the remedies available under the agreement and Philippine law, including barangay conciliation where required and the filing of the appropriate action, without further notice to the extent permitted by law.

Do not threaten arrest, automatic imprisonment, public exposure, seizure, blacklisting, deportation, or closure unless a specific lawful procedure genuinely applies. Failure to pay an ordinary debt is not, by itself, proof of a crime.

9. Reservation of rights

A concise reservation is useful:

This demand is without prejudice to other rights and remedies available under the agreement and applicable law.

This wording does not revive an expired claim, cure a defective demand, or preserve a right that has already been waived.

10. Signature and attachments

Sign using the sender’s legal name. State the sender’s capacity, such as creditor, lessor, property owner, authorized representative, or corporate officer.

List attachments, but send only what is necessary. Examples include:

Contract, promissory note, or acknowledgment.
Invoices and delivery receipts.
Statement of account.
Proof of payment or performance.
Returned-check record.
Property description.
Prior written communications.

Keep the originals. Unless there is a sound reason, send copies.

Adaptable demand-letter format

[Date]

BY [PERSONAL DELIVERY/REGISTERED MAIL/COURIER/EMAIL]

[Full legal name of recipient] [Position and entity, if applicable] [Complete address]

Re: Formal demand for [payment/performance/return of property]

Dear [Name]:

On [date], [identify the agreement, transaction, or obligation]. Under [identify the relevant provision or document], you were required to [state the promised performance] on or before [due date].

I performed or tendered my corresponding obligation by [briefly state performance and supporting document]. However, you failed to [state the breach] despite [identify any prior request or acknowledgment].

As of [computation date], the amount due is:

Principal: ₱[amount]

Contractual interest or penalty, if legally supported: ₱[amount]

Less payments or credits: ₱[amount]

Total: ₱[amount]

A detailed computation and copies of the relevant documents are attached.

I hereby formally demand that you [state the exact act required] no later than [specific date and time]. Payment or performance may be made through [clear instructions].

If you dispute this demand, please provide your written explanation and supporting documents by the same deadline. I remain willing to consider a documented settlement proposal, but no extension, waiver, or compromise will exist unless confirmed in writing.

If you fail to comply, I may pursue the remedies available under our agreement and Philippine law, including barangay conciliation where applicable and the filing of the appropriate action, without further notice to the extent allowed by law.

This demand is without prejudice to my other rights and remedies.

Sincerely,

[Signature] [Full legal name] [Capacity or authority] [Reliable contact details]

Attachments:

[Document]

[Statement of account]

[Other supporting record]

Remove any paragraph that is not true or relevant. A template should never replace the controlling contract, statute, or special procedure.

How to serve the letter

Follow the contract first

Use every notice method and address required by the agreement. If the contract requires registered mail but you send only through Messenger, the recipient may dispute whether valid contractual notice occurred.

When practical, use more than one compliant method on the same day.

Personal delivery

Have a responsible adult deliver the letter and ask the recipient or authorized receiving employee to sign a copy showing:

Printed name and signature.
Date and time received.
Position or relationship to the recipient.
Number of pages and attachments received.

The server should record the location and circumstances immediately. If the recipient refuses the letter, do not force entry, create a confrontation, or leave it somewhere unsafe. The server may prepare a detailed affidavit of attempted service and refusal while the events are fresh. A neutral witness can strengthen the record.

Registered mail or reputable courier

Address the package exactly as required by the contract and send it with tracking and proof of delivery. Preserve:

Registry or courier receipt.
Tracking history.
Return card or signed delivery record.
Photograph or scan of the sealed package and address label.
Any returned envelope and the postal notation explaining why it was returned.

Proof that something was mailed is not always proof of what the envelope contained. Keep a complete copy and, for important matters, have the server document the enclosure and mailing.

Email and electronic messages

Email can provide useful evidence, particularly when it is the agreed notice channel or the recipient acknowledges receipt. Send a signed PDF and preserve:

The original sent email.
Full headers and attachments.
Delivery or read notifications.
Replies or acknowledgments.
Exported conversation records, not screenshots alone.

Do not rely exclusively on email or a messaging app when the contract or special law requires another method. A “seen” indicator may help factually but may not satisfy a rule requiring formal or proven receipt.

Prepare an affidavit of service

For a significant or disputed claim, the person who served or mailed the letter should execute a detailed affidavit identifying:

The document served.
The date, time, place, and method.
The person who received or refused it.
The attachments included.
The receipts, tracking records, photographs, or other supporting evidence.

Notarizing the demand letter itself ordinarily proves neither the underlying claim nor the recipient’s receipt. A properly executed affidavit of service addresses the service event more directly.

Special rules that require extra care

Bounced checks

A general payment demand should not be confused with the written notice of dishonor used in a possible case under Batas Pambansa Blg. 22.

For the statutory presumption concerning knowledge of insufficient funds, the maker or drawer must receive written notice that the check was dishonored and then fail to pay the holder or make arrangements for full payment within five banking days from receipt. The prosecution must establish receipt; merely presenting a demand letter without competent proof that the accused received it can be insufficient. The Supreme Court emphasized this requirement in Ladot v. People.

A demand sent before the check was dishonored is not a substitute for post-dishonor notice. Because criminal prescriptive periods and evidentiary requirements may be involved, seek legal advice promptly.

Unlawful detainer and lease defaults

A landlord’s demand intended to support an unlawful-detainer case must be drafted for Rule 70, not merely as an ordinary collection letter.

For ejectment based on a tenant’s failure to pay rent or comply with lease conditions, Section 2 of Rule 70 generally requires a demand both to pay or comply and to vacate. Unless otherwise stipulated, the rule refers to failure to comply for 15 days in the case of land or 5 days in the case of buildings after demand. It also specifies demand upon a person found on the premises or posting a copy on the premises if no person is found there. Consult the current 2019 Rules of Civil Procedure.

The correct cause of action and the one-year period for ejectment depend on how possession began, how it became unlawful, and when the operative demand was made or received. A defective or ambiguous letter may cause dismissal or require a different action. Obtain legal advice before serving an eviction demand.

Barangay conciliation

A demand letter does not replace mandatory Katarungang Pambarangay proceedings.

When the parties are individuals actually residing in the same city or municipality and the dispute falls within the Lupon’s authority, prior barangay conciliation is generally a condition before filing in court or the proper government office. Important exceptions apply, including certain disputes involving juridical entities, government parties, different cities or municipalities, urgent provisional remedies, labor matters, agrarian disputes, and claims in danger of being barred by prescription.

Review Sections 408–412 of the Local Government Code and the Supreme Court’s Circular No. 14-93. If conciliation is required, obtain the proper certification to file action after the prescribed proceedings—not merely after an unsuccessful private demand.

Small claims

Under the current Rules on Expedited Procedures in the First Level Courts, covered money claims not exceeding ₱1,000,000, exclusive of interest and costs, may qualify for small-claims procedure. The filing materials call for the latest demand letter, if any, together with proof of service and receipt.

Check the Supreme Court’s Small Claims page and Rules on Expedited Procedures for the current forms, covered claims, venue, attachments, and procedure. Eligibility depends on the nature of the claim, not only its amount.

Evidence to preserve

Keep a single chronological file containing:

The signed agreement and amendments.
Promissory notes, invoices, purchase orders, and delivery records.
Receipts, bank records, and proof of partial payments.
Statements of account and transparent computations.
Original emails and exported message threads.
Prior requests and the debtor’s acknowledgments.
The exact signed demand letter and every attachment.
Postal, courier, and electronic delivery records.
Signed receiving copies.
Affidavits of service or attempted service.
Returned envelopes.
Settlement proposals and responses.
Notes of calls or meetings, identifying the participants and date.

Do not edit screenshots, recreate missing messages, or backdate documents. Preserve original files and metadata where possible.

Common mistakes

Sending the letter to the wrong person, trade name, or address.
Ignoring a contractual notice clause.
Demanding payment before the obligation matures.
Failing to show how the amount was computed.
Claiming unsupported interest, penalties, attorney’s fees, or collection charges.
Giving an unclear deadline.
Using threats or humiliating language.
Accusing someone of a crime without a factual and legal basis.
Publishing the debt or sending the letter unnecessarily to relatives, coworkers, or customers.
Relying only on a screenshot or unsigned courier status.
Treating proof of mailing as conclusive proof of receipt.
Confusing an ordinary demand with BP 22 notice or a Rule 70 eviction demand.
Assuming the letter automatically stops every prescriptive period.
Filing suit without required barangay conciliation.
Accepting a partial payment or settlement without recording its effect on the balance, deadlines, and reserved rights.

When legal help is urgent

Consult a Philippine lawyer promptly when:

A prescriptive or filing deadline may be near.
The claim involves eviction or possession of land or a building.
A check has been dishonored.
Fraud, falsified documents, threats, violence, or asset concealment is suspected.
An injunction, attachment, replevin, or another provisional remedy may be needed.
The debtor is insolvent, closing, transferring assets, or leaving the country.
The amount is substantial, disputed, or difficult to calculate.
Several debtors, guarantors, corporate entities, or jurisdictions are involved.
The matter concerns labor, agrarian, family, government, tax, regulated financial, or administrative proceedings.
You received a demand alleging personal or criminal liability.
The proposed letter could terminate a long-term contract or trigger acceleration, forfeiture, or repossession.

Frequently asked questions

Can I write and send the demand letter myself?

Yes. An ordinary demand generally does not require a lawyer. Legal assistance is advisable when special procedures, large amounts, disputed facts, or short deadlines are involved.

Must it be notarized?

Generally, no. Notarization may help authenticate the sender’s execution but does not prove that the factual allegations are true or that the recipient received the letter. A special law, contract, or intended evidentiary use may justify notarization.

Is email service enough?

Sometimes, particularly if the contract permits it and receipt is acknowledged. For important claims, use the contractual method and a delivery method that produces stronger proof. Special rules may require more than email.

What if the recipient refuses to accept the letter?

Do not force delivery. Document the attempt and refusal through the server, a neutral witness, and a prompt affidavit, then use any additional method permitted by the contract and law. Refusal does not excuse noncompliance with a special service rule.

How many days should I give?

Use the period stated in the contract or applicable law. If there is none, give a reasonable, definite deadline suited to the required performance. There is no universal period for all demand letters.

Can I demand legal interest and attorney’s fees?

Only when supported by the contract or applicable law. State the basis and computation. Their inclusion in a letter does not guarantee that a court will award them.

Does a demand letter stop prescription?

Article 1155 of the Civil Code provides that a written extrajudicial demand interrupts prescription, but special laws and procedural periods may operate differently. A letter should not be relied upon to revive an already prescribed claim or postpone an urgent filing without legal advice.

What should I do if the debtor proposes installments?

Verify the proposal, capacity to pay, security, and effect on existing rights. Put any compromise in a signed agreement stating the total admitted balance, schedule, interest, default consequences, treatment of prior claims, and whether the original obligation is replaced or merely restructured.

Official sources

This article provides general legal information, not legal advice or an attorney-client relationship. The correct letter and procedure depend on the contract, evidence, parties, and remedy involved. Sources and stated procedures were checked as of July 24, 2026.