Lending an acquaintance VND 300 million against a handwritten note, advancing working capital to a business partner on a verbally agreed interest rate, or letting a relative draw funds against a promise to repay in instalments: all of these are civil asset loan contracts, the transaction type the Civil Code 91/2015/QH13 governs in Articles 463 to 471. Unlike bank credit contracts with standard forms and tight appraisal, a private loan between individuals often lives on a few lines of paper, and that thinness generates the three recurring risk groups in debt recovery litigation: interest agreed above the statutory cap, inability to prove the money was handed over, and letting the limitation period lapse. This article works through the rate framework, enforceability, form and limitation under the actual articles of the 2015 Civil Code.
The 20 percent yearly cap in Article 468 and the fate of excess interest
Article 468 of the Civil Code 91/2015/QH13 lets the parties agree their own interest rate, then locks a hard ceiling over the bargain: the agreed rate may not exceed 20 percent per year of the loan amount, unless another relevant law provides otherwise, such as the separate rate regime for credit institution lending. The legal consequence of crossing the line sits in clause 1 of the same article: where the agreed rate exceeds the limit, the excess portion has no effect. The loan contract is not void as a whole, in other words; the borrower still owes principal plus interest within the 20 percent ceiling, while the excess is stripped out when a court decides, even if the borrower voluntarily paid that excess for several periods before the dispute erupted. Where the contract is silent on interest and the parties dispute whether interest exists at all, the statute fixes 50 percent of the ceiling, namely 10 percent per year, for a term loan left unpaid at maturity; a similarly fixed rate serves a court where interest exists but its rate was never clearly agreed and is contested.
Interest on overdue principal is the second computation layer the parties habitually draft wrongly. Under Article 468, when the borrower fails to pay at maturity, interest runs on principal at the agreed loan rate for the delay period, and the unpaid overdue principal itself bears interest at 150 percent of the contract loan rate for the overdue stretch. For an interest-free loan repaid late, late-payment interest is computed at the fixed 10 percent per year on the delayed sum. In practice many self-drafted notes record a generic penalty such as 5 percent per month of delay, equivalent to 60 percent per year, unaware that a court will re-standardise the entire interest and penalty architecture into the Article 468 frame and discard whatever overshoots it. Drafting inside the frame from the start is therefore not pedantry; it decides how much money actually survives several years of litigation.
Form: notarisation is optional, but proof of disbursement is the fatal point
The 2015 Civil Code does not require a private asset loan to be written or notarised to be valid; an oral agreement is in principle a binding contract where the parties have legal capacity and the content breaches no prohibition. Theoretical validity is a long way from winning in court, though, because the burden of proof sits on the claimant: the lender must prove the money was actually delivered to the borrower and that a loan was agreed. A handwritten note signed by the borrower, stating the amount in figures and in words, the loan date, the rate, the repayment term and the repayment method, is the heaviest original evidence; a bank transfer narrated as a loan closes the evidentiary loop by locking both the amount and the delivery date. By contrast, a receipt that vaguely acknowledges receiving money without naming a loan, or scattered chat messages about money, invites the borrower to re-characterise the transfer as investment, capital contribution or gift, forcing the lender to re-prove the nature of the payment from scratch.
Notarising a loan contract is voluntary but worth weighing for large loans or loans packaged with assets: a notarised document carries high probative value, its parties capacity and voluntariness have been checked by the notary, and in some cases it supports expedited enforcement routes. Where the loan is paired with a mortgage over land use rights or housing, the mortgage limb, separate from the loan limb, must be notarised and the security transaction registered before it gains effect against third parties. One further note concerns the lender status: an individual lending money is not banking business and is permitted at civil transaction scale, but lending habitually as a trade at extreme rates runs into credit activity regulation and, at the statutory extreme, the Criminal Code Article 201 offence of usurious lending in civil transactions once the rate reaches five times the civil ceiling combined with the illicit gain thresholds the law prescribes.
Contract validity and the defects that drain a loan agreement of value
An asset loan contract is valid when it meets the general conditions of Article 117 of the 2015 Civil Code: parties with appropriate legal and behavioural capacity, full voluntariness, and a purpose and content that violate neither statutory prohibitions nor social ethics. The habitual validity failures in private lending include a borrower who is a minor or of limited capacity acting without representative consent; a note signed under deception, threat or coercion; and loan paperwork fabricated to disguise another transaction, such as a sham note dressing up an asset transfer designed to escape a third-party creditor, where the sham is declared void and the hidden transaction is judged on its true nature. Excess interest, by contrast, does not void the whole contract: only the excess portion lacks effect under clause 1 of Article 468, a partial-nullity mechanism many borrowers misread as cancelling principal and interest altogether.
Loans denominated in foreign currency or gold between residents inside Vietnam are a validity risk zone of their own: foreign exchange law restricts using foreign currency as a means of payment and pricing unit within the territory, and courts have repeatedly converted dollar-denominated private notes into dong at the rate at payment or at judgment, producing outcomes far from the lender expectation when exchange rates move. Gold-denominated loans additionally collide with the rules governing the gold market and gold trading activities. Safe drafting practice records the loan amount in Vietnamese dong, possibly with a transparent conversion reference fixed at the moment of delivery, and documents every partial repayment with its own receipt so the closing principal balance cannot be re-argued at the end of the relationship.
The three-year limitation under Article 429, and how not to lose the right to sue
Article 429 of the 2015 Civil Code sets the limitation period for suing on a contract dispute at three years from the day the entitled person knew or should have known that their rights and lawful interests were infringed. For a term loan, that moment is normally the maturity date the borrower fails to honour: before it, the claim right is not yet infringed, so the clock has not started even if the money left the lender hands years earlier. For a loan without a term under Article 469, the lender must first give reasonable advance notice before demanding repayment, and limitation runs from the expiry of that notice while the borrower still has not paid. Borrowers routinely underrate this article because they assume a money debt can be sued on forever; in truth, once limitation has lapsed and the borrower invokes it, the court discontinues the case and the debt becomes practically unrecoverable through litigation.
The law still leaves protective machinery for the inattentive lender: limitation restarts when the borrower acknowledges part or all of the obligation, performs part of it, for example paying a further slice of principal or interest after maturity, or when both parties jointly request mediation under the statutory procedure. A small interest receipt signed after the due date, or a debt-confirming message that can be clearly referenced, can therefore rescue a large loan from limitation death, provided the evidence shows the borrower own will to acknowledge the debt. In the opposite direction, a lender should send a written, delivery-confirmed repayment demand before limitation nears its end, and never let negotiation drift past the three-year mark without a fresh written acknowledgment of debt; a limitation diary is part of serious private-loan administration, on a par with keeping the original note itself.
Frequently Asked Questions
What is the maximum interest rate in a civil loan contract?
Under clause 1 of Article 468 of the Civil Code 91/2015/QH13, the parties may agree the rate but it may not exceed 20% per year of the loan amount, unless another relevant law provides otherwise. Where the contract does not state the rate clearly and the existence of interest is disputed, the fixed rate is 50% of the ceiling, i.e. 10% per year, for a term loan unpaid at maturity.
Must a civil loan contract be in writing or notarized?
No. The 2015 Civil Code does not require a private asset loan contract to be written or notarised for validity. But a suing lender must prove delivery of the money and the loan agreement, so a signed handwritten note plus a bank transfer record is the safest evidence set. A mortgage over land or housing packaged with the loan is different: that security limb must be notarised and registered.
What happens to interest exceeding the statutory cap?
Under clause 1 of Article 468 of the 2015 Civil Code, the portion of the agreed rate above the 20% per year ceiling has no effect, while the rest of the contract stands: the borrower still repays principal and in-ceiling interest. In a dispute the court strips the excess when computing the sum payable. Interest on unpaid overdue principal runs at 150% of the contract loan rate for the overdue period, also inside the standardised Article 468 framework.
What is the limitation period for suing to recover a loan under a loan contract?
The period is three years under Article 429 of the 2015 Civil Code, running from when the lender knew or should have known the right was infringed, for a term loan normally the maturity date left unpaid. Limitation restarts if the borrower acknowledges the obligation or performs part of it after maturity. Once the period lapses and the borrower invokes limitation, the court discontinues the case and the debt can no longer be recovered through litigation.
This article has been quality-reviewed by the FLAW AI Legal Council
