Quick answer

Send the debtor a clear written demand stating who owes whom, the legal basis and exact amount of the debt, when it became due, how payment may be made, and a definite deadline. Attach or identify the supporting documents. Deliver the letter through a method that can prove both dispatch and receipt—preferably personal service with a signed receiving copy, registered mail with registry records and return receipt, or a reputable courier with tracking and proof of delivery.

A demand letter generally does not have to be notarized or written by a lawyer to be valid. What matters is that it is accurate, made by the creditor or an authorized representative, addressed to the proper debtor, and provably received. Follow any notice method or cure period required by the contract.

A demand letter is not yet a court judgment and does not allow the creditor to seize property, garnish wages, or publicly shame the debtor. If the debtor does not pay, the next step may be barangay conciliation, small claims court, or an ordinary civil action, depending on the parties, amount, documents, and nature of the obligation.

Why a written demand matters

Under Article 1169 of the Civil Code, a debtor generally incurs delay after the creditor judicially or extrajudicially demands performance. A properly delivered demand letter can therefore establish when default began.

Demand is not always required to place the debtor in delay. Article 1169 recognizes exceptions when:

The law or the parties’ agreement expressly provides otherwise;
The time of performance was a controlling motive for the contract; or
Demand would be useless because the debtor has made performance impossible.

The contract may also state that the debtor is automatically in default when the due date passes. Review the actual wording before asserting when default began.

A written extrajudicial demand may also interrupt prescription under Article 1155 of the Civil Code. This can be important when the deadline for filing a case is approaching. It should not, however, be treated as an excuse to delay consulting counsel: the applicable prescriptive period and whether it was effectively interrupted can depend on the obligation, the documents, receipt of the demand, previous acknowledgments, and other facts.

Check these matters before drafting

Confirm the identity of the debtor

Use the debtor’s complete legal name and current address. For a sole proprietorship, determine whether the obligation belongs to the individual proprietor. For a corporation or partnership, address the entity itself and send the letter to its registered or known business address, with attention to an authorized officer.

Do not automatically demand payment from a shareholder, director, officer, employee, spouse, relative, or guarantor. Personal liability requires a legal and factual basis. A guaranty, suretyship, corporate obligation, or marital-property issue should be reviewed from the actual documents.

Confirm that the debt is already due

Check the contract, promissory note, invoice, acknowledgment, payment schedule, maturity date, acceleration clause, grace period, and any conditions that must occur before payment becomes demandable. Article 1193 of the Civil Code provides that an obligation with a fixed period becomes demandable when that day arrives.

If no due date was agreed upon, do not invent one or assume that the loan is automatically overdue. Legal advice may be needed to determine whether the obligation is demandable or whether a court must fix the period.

Reconcile the amount

Prepare a simple account showing:

Original principal;
Payments, credits, rebates, or returned goods;
Contractual interest, if valid and applicable;
Penalties or charges expressly supported by the agreement;
The resulting balance; and
The date through which any calculation was made.

Conventional interest on a loan must be expressly agreed to in writing under Article 1956 of the Civil Code. Do not add interest, collection charges, attorney’s fees, or penalties merely because they appear fair. Courts may also reduce penalties that are iniquitous or unconscionable.

When a money obligation is breached and no applicable interest rate was stipulated, Article 2209 treats legal interest as damages from default. The present legal rate for loans or forbearance is 6% per year under BSP Circular No. 799. The Supreme Court’s framework in Nacar v. Gallery Frames explains how legal interest may run from judicial or extrajudicial demand and how interest applies after a monetary judgment becomes final. The correct starting date and base amount remain fact-sensitive, so avoid presenting an unverified interest computation as final.

What the demand letter should contain

A practical demand letter normally includes the following:

Date and delivery method. State the date and, where useful, “By personal service,” “By registered mail,” or “By courier.”
Creditor and debtor details. Give complete names and usable addresses. Include an account, invoice, contract, or loan reference number if one exists.
Source of the obligation. Briefly describe the loan, sale, lease, service, acknowledgment, judgment, or other transaction. Mention the date and relevant document.
Payment history. State the amount originally due, payments credited, and remaining balance.
Statement that payment is due. Identify the maturity date or event that made the obligation demandable.
Unequivocal demand. Clearly require payment or performance. Avoid vague wording such as “Please attend to this matter.”
Definite deadline. Give a calendar date, not merely “immediately.” Follow any contractual notice or cure period. There is no universal number of days for every ordinary debt.
Payment instructions. State where and how payment may safely be made. If bank details are included, verify them carefully and provide a way to confirm authenticity.
Response channel. Provide an address, email, or phone number for payment confirmation or a written proposal.
Next lawful step. State calmly that failure to pay may lead to appropriate barangay or court proceedings and a claim for remedies allowed by law and contract.
Signature and authority. The creditor should sign. If an agent, company officer, or lawyer signs, the person’s capacity should be clear and authority should be documented where necessary.

Use factual, restrained language. A demand letter is stronger when it can later be shown to a judge without embarrassment or explanation.

A usable demand-letter structure

Date: [date] By: [personal service/registered mail/courier]

To: [debtor’s complete name] Address: [complete address]

Subject: Demand for payment of ₱[amount]

Dear [name]:

On [date], you [received a loan/purchased goods/engaged services/entered into an agreement] under [identify the contract, promissory note, invoice, or acknowledgment]. Payment became due on [date or contractual basis].

Based on our records, the account is as follows:

Principal or invoiced amount: ₱[amount]

Less payments or credits: ₱[amount]

Contractually supported interest or charges, calculated to [date]: ₱[amount]

Total presently demanded: ₱[amount]

Copies of [identify supporting documents] are enclosed.

Formal demand is hereby made for payment of ₱[amount] on or before [specific date]. Payment may be made through [verified payment method]. Please send proof of payment to [contact details].

If you dispute the account, please provide your written explanation and supporting records by the same date. If you need to propose a payment arrangement, submit specific dates and amounts in writing. No arrangement will be binding unless accepted in writing.

If payment or an acceptable written arrangement is not received by the deadline, I/we may pursue the appropriate remedies, including barangay conciliation where required and the filing of a court action, without further notice, subject to applicable law and procedure.

Sincerely,

[signature] [printed name and capacity] [contact details]

Adapt this structure to the contract and facts. Do not copy language about interest, penalties, acceleration, collateral, attorney’s fees, or criminal liability unless it is legally and factually supportable.

How to deliver the letter and prove receipt

Personal service

Bring two identical signed copies. Ask the debtor or an authorized recipient to sign and date the receiving copy, print their name, and note the time of receipt.

If the recipient refuses to sign, do not force entry or create a confrontation. The server should promptly make a detailed written record identifying the address, date, time, person encountered, what was offered, and what happened. An independent witness may help, but a refusal notation is not always equivalent to proof of actual receipt.

Registered mail

Send the letter to the debtor’s correct address by registered mail. Keep:

A complete signed copy of the letter and enclosures;
The registry receipt;
The mailing envelope or an image of it;
Tracking records;
The registry return card or other delivery record; and
Any returned envelope and postal notation.

Do not assume that a registry receipt alone conclusively proves receipt. The Supreme Court has emphasized that postal presumptions may be overcome by strong contrary evidence; careful documentation matters. See the Court’s discussion on proof of proper mail delivery.

Private courier

Use a reputable courier that provides tracking and proof showing the delivery address, date, and recipient. Save a PDF or screenshot of the complete tracking history before online records expire.

Email or messaging applications

Email, SMS, and messaging apps can provide useful additional evidence, especially when the debtor replies or acknowledges receipt. Preserve the complete conversation, dates, account identifiers, attachments, and exportable records—not only cropped screenshots.

Electronic delivery should ordinarily supplement a traceable physical delivery unless the contract expressly permits electronic notice or the circumstances make electronic service legally sufficient. A “sent” indicator is not necessarily proof that the intended debtor received and opened the demand.

Use more than one reliable channel when appropriate

For an important or disputed debt, sending the same signed letter by personal service or registered mail, courier, and the debtor’s established email address can reduce arguments about notice. Keep every version identical and maintain a delivery log.

Choosing the deadline

No single law gives every debtor a standard 5-, 10-, 15-, or 30-day period for an ordinary demand letter. The correct deadline may come from:

The contract;
A statute governing the transaction;
A required notice-and-cure provision;
The nature and amount of the obligation; or
A reasonable opportunity to perform under the circumstances.

Use a specific date and allow for actual delivery. If the contract requires 15 days “from receipt,” say so and calculate the period from provable receipt, not merely from the letter’s date.

A five-banking-day period has a special role in cases involving dishonored checks under Batas Pambansa Blg. 22. It is not a universal deadline for all debts. For possible BP 22 proceedings, written notice of dishonor, proof of actual receipt, and failure to pay or arrange full payment within five banking days are legally significant. Supreme Court decisions stress the need for clear proof of receipt, including Danao v. Court of Appeals. Obtain legal advice before using a demand letter as part of a contemplated criminal complaint.

What to do after sending

If the debtor pays

Issue a receipt stating the amount, date, payment method, and obligation to which it was applied. Do not call a partial payment “full settlement” unless that is the intended agreement.

If payment is made by check, state whether the receipt or release is subject to clearing. Return original debt instruments only when appropriate and after confirming complete payment.

If the debtor proposes installments

Put the arrangement in writing. It should identify:

The admitted or compromised balance;
Exact installment amounts and dates;
Where payment must be made;
Treatment of interest and charges;
Consequences of missed payments;
Whether the original obligation is amended, replaced, or merely accommodated; and
When releases, collateral, or original documents will be returned.

Do not rely solely on a verbal promise. A new agreement can affect prescription, defenses, guarantors, security, and available remedies.

If the debtor disputes the debt

Request specific objections and supporting documents. Recheck signatures, authority, deliveries, credits, defective goods or services, setoffs, prior settlements, and limitation periods. Correct a genuine accounting mistake in writing rather than insisting on an inaccurate demand.

If there is no response

Organize the evidence and determine the required forum. Do not repeatedly send threats or contact unrelated people merely to pressure the debtor.

Barangay conciliation may be required first

Under Sections 408 and 412 of the Local Government Code, certain disputes between parties who actually reside in the same city or municipality must generally undergo Katarungang Pambarangay conciliation before a court action may be filed. Venue within the barangay system depends on where the parties reside and, for disputes involving real property or a workplace or school, other statutory rules.

The requirement has exceptions, including specified matters involving the government, public officers performing official functions, certain offenses, disputes requiring urgent judicial action, and parties who do not meet the statutory residence conditions. Juridical entities and disputes spanning different localities require closer analysis. The Supreme Court has treated compliance with barangay conciliation as a precondition—not a substitute for proving the debt—when the law applies.

Bring the demand letter, proof of receipt, contract, account statement, receipts, and communications to the barangay. If no settlement is reached, obtain the proper certification before filing in court. A valid barangay amicable settlement may acquire the force and effect of a final court judgment after the statutory period, subject to the remedies provided by law.

When small claims court may be available

The Rule on Small Claims covers specified money claims not exceeding ₱1,000,000, exclusive of interest and costs. The governing Rules on Expedited Procedures in the First Level Courts apply to qualifying claims arising from matters such as loans, leases, services, sales, and mortgages, as defined in the Rule.

A small claims filing normally requires the prescribed forms and supporting evidence, including the contract or account records, the latest demand letter, and proof of service or receipt. If barangay conciliation was required, the appropriate barangay certification should also be included.

Small claims cases are designed for parties to appear without lawyer representation at the hearing, although a party may consult a lawyer before filing or appearing. Filing fees, venue, service, and special requirements for a plaintiff engaged in lending must still be followed. Current forms and court guidance are available on the Supreme Court’s Small Claims page.

Claims above the threshold, claims outside the Rule’s subject matter, or cases requiring relief other than payment may require an ordinary civil action.

Evidence to preserve

Keep the originals—or reliable authenticated copies—of:

Contracts, promissory notes, guarantees, and security documents;
Purchase orders, invoices, statements of account, and delivery receipts;
Proof that money, goods, or services were delivered;
Checks and bank return records;
Receipts and records of partial payments;
Emails, texts, chat exports, and written acknowledgments;
The signed demand letter and every enclosure;
Postal or courier receipts, tracking results, return cards, and returned envelopes;
Personal-service receiving copies and witness records;
Barangay documents;
Corporate authority or authorization to collect; and
A chronological ledger of transactions and communications.

Preserve complete conversations and original electronic files where possible. Cropped screenshots may omit information needed to identify the sender, date, context, or authenticity.

Conduct to avoid

A creditor may firmly pursue a lawful debt, but should not:

Threaten arrest merely for nonpayment of an ordinary civil debt;
Claim that a case has been filed when none has been filed;
Pretend to be a court, police officer, or government agency;
Threaten violence, unlawful seizure, or public humiliation;
Publish the debt on social media or disclose it unnecessarily to employers, relatives, neighbors, or coworkers;
Use insulting, obscene, or deceptive messages;
Demand amounts unsupported by the agreement or law;
Seize collateral or other property without contractual and legal authority; or
Continue contacting a person known to be the wrong debtor.

The Constitution prohibits imprisonment for debt, although separate criminal liability may arise from independently punishable conduct, such as certain acts involving fraud or a dishonored check when every statutory element is proved. A demand letter should not use a threatened criminal complaint simply as leverage where the facts do not support one.

Common mistakes

Sending the letter before confirming that the obligation is due;
Demanding from the wrong individual or entity;
Failing to credit partial payments;
Adding unwritten or improperly calculated interest;
Using an old or unverified address;
Keeping proof of mailing but no evidence of receipt;
Giving only a vague or already-expired deadline;
Ignoring a contractual notice clause;
Treating email or a chat “sent” mark as conclusive proof;
Threatening immediate attachment, garnishment, foreclosure, or arrest without legal process;
Missing barangay conciliation where it is required;
Assuming a demand letter indefinitely extends the time to sue; and
Letting the claim prescribe while negotiations continue.

When legal help is urgent

Consult a Philippine lawyer promptly if:

A prescriptive deadline may be near;
The debtor is disposing of assets, closing a business, leaving the country, or becoming insolvent;
The debt is secured by a mortgage, pledge, guaranty, or suretyship;
The debtor has died or rehabilitation, liquidation, or insolvency proceedings have begun;
A dishonored check may involve BP 22;
The contract contains arbitration, acceleration, foreclosure, venue, or unusual notice provisions;
The amount or interest computation is disputed;
The debtor denies the signature, transaction, delivery, or authority of an agent;
The parties or property are in different cities, municipalities, or countries;
The debtor is a corporation but payment is sought from an officer or owner personally;
Provisional remedies such as attachment may be considered; or
Harassment, violence, threats, or falsified documents are involved.

The Public Attorney’s Office may assist qualified indigent clients, subject to its governing requirements and conflict checks. Court personnel may provide official forms and procedural information but cannot give private legal advice.

Frequently asked questions

Must a demand letter be notarized?

Generally, no. An ordinary extrajudicial demand does not become valid only through notarization. Notarization may help identify the signer and formalize the document, but it does not prove that the debtor received it or that the claimed amount is correct.

Must a lawyer send it?

No. A creditor may send a demand personally or through an authorized representative. A lawyer is useful when liability, interest, prescription, collateral, corporate identity, or possible criminal implications are disputed.

Is one demand letter enough?

Often, one accurate and provably received demand is more useful than several untracked letters. The contract or a special law may require a particular notice, additional notice, or cure period.

Can the letter be written in Filipino?

Yes. Use a language the debtor can understand, while keeping legal names, amounts, dates, and contractual references precise. A bilingual letter may be useful. Avoid translating defined contract terms in a way that changes their meaning.

How many days should the debtor be given?

There is no universal period for every debt. Follow the contract or applicable law. Otherwise, give a reasonable, definite deadline based on the circumstances and the date of actual receipt.

Can interest start from the demand letter?

Potentially. When demand is necessary to establish default, legal interest as damages may run from a valid judicial or extrajudicial demand. The proper rate, base, and starting date depend on the agreement and facts. Do not assume that sending a letter validates an otherwise unsupported interest charge.

Does the letter guarantee collection?

No. It creates a documented opportunity to pay and may have legal effects, but the creditor must still prove the obligation. Even a favorable judgment may require separate enforcement proceedings and does not guarantee that recoverable assets exist.

Can the debtor be arrested for ignoring the letter?

Not merely for failing to pay an ordinary debt. Criminal liability requires proof of every element of a separate offense. A private demand letter is not a warrant, summons, or court order.

Should original documents be enclosed?

Usually not. Send copies and retain the originals securely for settlement, barangay proceedings, or court. If authenticity is questioned, originals may later need to be produced.

Does sending a demand automatically stop prescription?

Article 1155 recognizes interruption by a written extrajudicial demand, but effectiveness can be disputed based on the claim, timing, contents, and proof of receipt. If prescription may be close, obtain legal advice and do not rely on repeated letters instead of timely filing.

This article provides general Philippine legal information, not legal advice for a particular debt or document. Rules and outcomes depend on the contract, evidence, parties, forum, and surrounding facts. Primary legal sources and procedures were checked as of July 24, 2026.