If a lender is demanding interest on money you borrowed even though nothing was ever put in writing, Philippine law generally does not allow it. Under the Civil Code, conventional interest on a loan becomes due only when the parties expressly agree to it in a written document. Without that written stipulation, the lender can usually recover only the principal amount you actually received. This protection exists to prevent disputes, hidden charges, and one-sided claims that often arise in informal lending situations common among Filipino families, friends, neighbors, and small-scale lenders.
This article explains the exact legal rules, how courts handle these cases in practice, what counts as valid written proof, the limited role of legal interest when there is default, and the practical steps you can take if you are facing demands for unagreed interest. It also covers real scenarios many Filipinos encounter with informal lenders, online apps, or personal loans, plus answers to the questions people most often search about this topic.
The Core Legal Rule on Interest
Article 1956 of the Civil Code of the Philippines states clearly: “No interest shall be due unless it has been expressly stipulated in writing.”
This rule applies to contracts of loan (called mutuum in the Civil Code). A loan itself can exist through an oral agreement or even through conduct — for example, when one person hands over cash and the other accepts it with an understanding to repay. But the interest portion is treated differently. The law requires an express, written agreement on the interest rate, how it is computed, and when it is payable.
Verbal discussions, handshakes, text messages that are unclear, or assumptions that “everyone knows there is interest” do not satisfy this requirement. If there is no written document signed by the borrower (and ideally the lender) that expressly sets out the interest, courts will not enforce conventional interest.
Conventional Interest vs. Legal or Compensatory Interest
It helps to understand the two main types of interest that can arise:
Conventional interest — This is the rate the parties agree on (for example, 2% per month or 10% per year). It is only enforceable if it is expressly stipulated in writing under Article 1956. Even then, the rate must not be unconscionable.
Legal or compensatory interest — This is the rate the law imposes when the borrower defaults after a proper demand. Under Bangko Sentral ng Pilipinas (BSP) Circular No. 799, Series of 2013, and the Supreme Court ruling in Nacar v. Gallery Frames (G.R. No. 189871, August 13, 2013), the legal interest rate is 6% per annum. It runs from the date of extrajudicial demand (such as a written letter) or judicial demand until the debt is fully paid. This is not something the lender can simply “add” on their own without following legal process.
In short, if there is no written agreement for conventional interest, the lender’s main remedy is to recover the principal plus possible 6% legal interest if they can prove you defaulted after being properly asked to pay.
What Makes a Written Stipulation Valid?
For interest to be legally demandable, the written document must:
- Be signed by the borrower (and preferably the lender).
- Clearly state the principal amount, the interest rate (for example, “simple interest at 12% per annum”), the period it covers, and the payment schedule.
- Show that the borrower expressly agreed to pay that interest.
A simple promissory note or loan agreement is usually enough. Notarization is not strictly required for the contract to be valid between the two parties, but it turns the document into a public instrument. This makes it easier to present in court, harder to deny, and sometimes allows faster enforcement through execution proceedings.
Electronic documents can qualify under the E-Commerce Act (Republic Act No. 8792) if there is clear acceptance (such as clicking “I agree” to terms that plainly disclose the interest) and the records can be authenticated. However, courts still prefer traditional signed paper documents in debt collection cases because they reduce arguments about authenticity.
Text messages or chat screenshots alone are often insufficient on their own to prove an express stipulation for interest, especially if the rate or terms are ambiguous. They may serve as supporting evidence but rarely carry the same weight as a formal signed note.
When Courts Can Reduce or Disregard Even Written Interest
Even when interest is written into a signed contract, Philippine courts have the power to intervene if the rate is excessive or unconscionable. The Supreme Court has repeatedly held that while parties are free to agree on rates, those rates cannot be so high that they become contrary to morals, good customs, or public policy.
In cases such as Medel v. Court of Appeals and more recent decisions (including a 2023 ruling involving rates of 3% per month or 36% per annum), the Court has reduced or nullified high interest and penalty charges, often bringing them down to the legal rate or a reasonable figure. There is no strict numerical ceiling like the old Usury Law, but rates that are several times higher than the 6% legal rate are frequently struck down or lowered when challenged.
This doctrine protects borrowers from predatory terms while still allowing reasonable compensation for the use of money.
Common Real-Life Scenarios
Many Filipinos borrow informally from relatives, neighbors, or “5-6” style lenders who add daily or weekly charges. In these situations, there is often no proper written agreement specifying the interest rate and terms. The added “interest” or “penalty” portions are generally unenforceable under Article 1956. The lender can still pursue the principal, and possibly 6% legal interest from the date of a valid written demand, but they cannot unilaterally inflate the debt with unagreed charges.
Online lending apps and some fintech platforms usually present terms of service or loan disclosures that the borrower accepts electronically. When the interest rate and computation are clearly stated and accepted, this can constitute a valid written stipulation. However, hidden fees, rapidly compounding charges, or rates that courts later find unconscionable can still be challenged.
Formal banks and lending companies almost always use detailed written contracts with clear interest disclosures, amortization schedules, and penalty clauses. These are far more likely to be upheld, though even here courts can reduce truly excessive penalties.
Foreigners lending to or borrowing from Filipinos follow the same Civil Code rules when the transaction occurs in the Philippines. Language differences or lack of notarization can make proving the exact terms harder, which is why written bilingual documents and proper notarization are strongly advisable in cross-border or mixed-nationality loans.
What You Can Do If a Lender Demands Unagreed Interest
Here is a practical sequence many people follow successfully:
Gather every document, text message, chat log, receipt, and record of payment you have. Note exactly what was said about interest (or the absence of any mention).
Calculate what you actually received and what you have already paid. Prepare a clear written summary.
Send a calm, factual written response (via registered mail with return card, email with read receipt, or through a lawyer) stating that you acknowledge the principal but that no interest was stipulated in writing as required by Article 1956. Request a proper accounting limited to the principal plus any legally due amounts.
Continue making reasonable payments toward the principal if you are able, and keep detailed records. This shows good faith.
If the lender uses harassment, repeated calls, messages to your family or employer, public shaming, or threats, document everything (screenshots, call logs, witness statements). Report the matter to your barangay for possible conciliation or a protection order, or to the Philippine National Police if there are threats or coercion.
If a case is filed against you in court (usually in the Metropolitan or Municipal Trial Court for smaller amounts), attend the hearings. Present your evidence that there is no written interest stipulation. The court will typically limit recovery to the principal plus 6% legal interest from the date of valid demand if default is proven. For smaller claims, simplified procedures apply and, in many cases, you do not need a lawyer to defend yourself.
Consider a reasonable settlement once you know exactly what the law requires you to pay. Many disputes end at the barangay level or through negotiation once the lender realizes the interest claim is weak.
Barangay conciliation is often the first required step for disputes between parties in the same city or municipality. It is free, relatively fast, and can lead to an enforceable agreement.
Frequently Asked Questions
Can a lender add daily or weekly interest if we only had a verbal agreement or handshake?
No. Article 1956 of the Civil Code requires an express written stipulation for conventional interest. Verbal agreements or informal understandings do not create an enforceable obligation to pay interest. The lender can still claim the principal and, after proper demand and proof of default, legal interest at 6% per annum.
Is a text message or Facebook chat enough to prove we agreed on interest?
It can be supporting evidence if the messages clearly and expressly state the rate and the borrower’s agreement, and the messages can be properly authenticated in court. However, it is far weaker than a signed promissory note or loan agreement. Courts prefer formal written documents for money claims, and ambiguous chats often fail to meet the “expressly stipulated in writing” standard.
What if I already paid some “interest” even though there was no written agreement?
Payments already made are difficult to recover. You may have a theoretical claim for return of excess under principles of unjust enrichment or solutio indebiti if you can prove you paid under mistake or duress, but these cases require strong evidence and going to court. The more practical step is usually to stop paying disputed interest going forward and document your position in writing.
What interest rate is considered too high or illegal in the Philippines?
There is no fixed statutory maximum anymore, but the Supreme Court has consistently reduced or voided rates it finds unconscionable — for example, 3% per month (36% per year) or higher in several cases. Even written rates can be lowered by the court to a reasonable level (often the legal rate of 6% per annum or slightly higher) if they are challenged and found excessive relative to the circumstances.
Do I still owe legal interest at 6% if there was never any written agreement?
Only if the lender proves you defaulted after making a proper demand (usually a written letter). Legal interest is compensatory and awarded by the court or through the judgment process; the lender cannot simply add it unilaterally to your balance without legal basis or court involvement.
What documents should a proper loan agreement with interest contain?
At minimum: the names of the parties, the exact principal amount received, a clear statement of the interest rate and how it is computed (simple or compound), the repayment schedule or due date, any penalties (which are also subject to possible reduction if excessive), and the signatures of the borrower and lender. Notarization is recommended for stronger evidence and easier enforcement.
Can lending apps or online lenders charge high interest without a traditional paper contract?
If you accepted clear electronic terms that disclose the interest rate and computation, this can qualify as a written stipulation under the E-Commerce Act. However, the rate and any compounding or penalty provisions remain subject to the conscionability doctrine. Some apps have faced challenges over hidden or excessive charges.
What should I do if the lender is harassing me or threatening to file a case over the interest?
Document all incidents. Respond in writing that you are willing to settle the principal according to law. Report threats or harassment to the barangay or police. You are not required to pay unagreed interest, but you should address the legitimate principal obligation. Consulting the Public Attorney’s Office (if you qualify) or a private lawyer can help you respond correctly and protect your rights.
Key Takeaways
- Conventional interest on a loan is not due unless it is expressly stipulated in writing under Article 1956 of the Civil Code.
- Without a written agreement on interest, the lender can generally recover only the principal plus possible 6% legal interest from the date of proper demand if default is proven.
- Even written interest rates can be reduced by courts if they are unconscionable or excessive.
- Text messages or verbal discussions alone are usually insufficient to enforce conventional interest.
- Keep complete records of every communication and payment. Send written responses stating your position clearly.
- Harassment or threats over disputed interest can be reported to the barangay or police.
- For smaller collection cases, simplified court procedures exist, and many disputes can be resolved at the barangay level or through negotiation once the legal limits are understood.
- Formalizing any loan with a clear, signed (and preferably notarized) document protects both the borrower and the lender from future disputes.