Promissory Note (Hong Kong)

A Promissory Note in Hong Kong fixes the principal, interest, and security on which credit is extended.

The Bills of Exchange Ordinance (Cap. 19) distinguishes a promissory note from a simple IOU or informal acknowledgment of debt in one critical respect: negotiability. A promissory note is a negotiable instrument, meaning it can be endorsed (transferred by signature) to a third party, who may acquire the status of a holder in due course under Cap. 19 and enforce the note against the maker even if the maker has defences against the original payee. Negotiability makes the promissory note a flexible commercial tool — the payee can assign the debt obligation to a bank or financing house as security, or transfer it in satisfaction of the payee's own obligations.

Hong Kong's Inland Revenue Department (IRD) recognises promissory notes as legally sufficient documentation for intercompany loans and private lending transactions. The Stamp Duty Ordinance (Cap. 117) governs whether stamp duty applies, and the e-Stamping portal operated by the IRD allows online assessment and payment of any duty. The Limitation Ordinance (Cap. 347) provides a six-year limitation period for actions on a promissory note from the date the cause of action accrues — typically the date the note falls due.

Unlike jurisdictions with GST or VAT, Hong Kong imposes no consumption tax on lending transactions. The face value of the note is the net amount owed. Profits Tax under the Inland Revenue Ordinance (Cap. 112) may apply to interest income received by the lender if the lending is carried on as part of a business in Hong Kong. The Money Lenders Ordinance (Cap. 163) also has material relevance: any person carrying on the business of moneylending to individuals in Hong Kong must be licensed by the Registrar of Money Lenders (the Registrar of Companies), and unlicensed moneylending contracts are unenforceable.

For corporate parties, the promissory note must be executed by authorised signatories in accordance with the company's articles of association and the Companies Ordinance (Cap. 622). Where the company's constitution requires the common seal to be affixed, the seal should be applied in accordance with the company's sealing procedures. The Electronic Transactions Ordinance (Cap. 553) permits electronic signatures in certain circumstances, though physical signatures remain preferable for significant commercial transactions.

Promissory notes are used across Hong Kong's financial ecosystem: personal loans between individuals, intercompany treasury financing within corporate groups, startup convertible note instruments, bridging finance pending completion of a property sale and purchase agreement under the Conveyancing and Property Ordinance (Cap. 219), and short-term trade finance. The simplicity of the promissory note — one page recording the essential obligation — is its primary advantage over a full loan agreement, while its statutory backing under Cap. 19 gives it strong legal standing before the District Court and the Court of First Instance.

A Promissory Note in Hong Kong is needed whenever a lender and borrower want a simple, statutory-backed written record of a debt obligation that is enforceable under the Bills of Exchange Ordinance (Cap. 19).

Personal loans between individuals require a promissory note when one person lends money to a friend, family member, or business associate. Without written evidence satisfying the requirements of Cap. 19, proving the existence and terms of a loan in the District Court or Small Claims Tribunal is significantly more difficult. A signed promissory note constitutes strong prima facie evidence of the debt and its terms.

Intercompany loans within corporate groups in Hong Kong — a common treasury management practice — should be documented by a promissory note or loan agreement. The Inland Revenue Department requires clear documentation of intercompany loans for transfer pricing analysis under the Inland Revenue Ordinance (Cap. 112) and for auditors verifying the company's accounts under the Companies Ordinance (Cap. 622). A promissory note provides straightforward, accepted documentation.

Formalising an existing informal debt is another key use case. When parties have previously lent and borrowed money informally, executing a promissory note converts the uncertain oral arrangement into a Cap. 19 instrument with a clear repayment date, specified interest rate, and defined default consequences.

Startup financing using convertible notes — common in Hong Kong's venture capital and startup ecosystem — typically uses promissory note structure as the underlying debt instrument, with additional conversion provisions attached by a separate agreement or schedule.

Bridging finance for property transactions uses promissory notes to document short-term funding advanced to a buyer pending completion of the formal assignment under the Conveyancing and Property Ordinance (Cap. 219) and payment of Stamp Duty Ordinance (Cap. 117) obligations.

Trade finance arrangements between a Hong Kong exporter or importer and a supplier or buyer, particularly where a letter of credit is not used, may employ promissory notes as evidence of payment obligations for goods and services governed by the Sale of Goods Ordinance (Cap. 26). Consider a full loan agreement instead of a promissory note where the transaction involves multiple drawdowns, complex security arrangements, or conditions precedent requiring extensive documentation.

A legally valid Hong Kong Promissory Note under the Bills of Exchange Ordinance (Cap. 19) must include the following essential elements. Forms-legal.com provides a structured template covering all Cap. 19 requirements.

Unconditional promise to pay: Section 89 of the Bills of Exchange Ordinance (Cap. 19) requires the instrument to contain an express, unconditional promise to pay — 'I promise to pay' or 'We promise to pay'. Any qualification or condition attached to the payment obligation disqualifies the instrument as a promissory note under Cap. 19, reducing it to an ordinary contractual promise.

Party identification: Full legal names and HKID numbers (for individuals) or Companies Registry registration numbers (for companies) of both the maker (the person promising to pay) and the payee (the person to whom payment is due), together with their addresses in Hong Kong or elsewhere. Corporate makers must be identified by their registered company name.

Principal amount: The exact sum to be paid, expressed in Hong Kong Dollars (HKD or HK$) in both numerals and words. Hong Kong has no GST or VAT, so the face value is the net amount. Where the note provides for interest at a specified rate, the sum remains certain under Cap. 19 notwithstanding the interest provision.

Payment date and terms: The date on which the principal is repayable — on demand, on a specified date in DD/MM/YYYY format, or at a determinable future time expressed by reference to a triggering event or period (e.g., 'ninety (90) days from the date hereof'). Promissory notes payable 'when convenient' or 'when able' are not determinable and do not satisfy Cap. 19.

Interest rate and default interest: The annual interest rate expressed as a percentage per annum, compounding frequency, and the method of calculation. Where no interest is payable, this should be stated expressly. A default interest rate — typically two to four percentage points above the standard rate — should be specified to apply from the due date until actual payment.

Place and date of issue: Hong Kong as the place of making and the date of issue in DD/MM/YYYY format. The place and date are relevant for stamp duty assessment under the Stamp Duty Ordinance (Cap. 117) and for determining the applicable limitation period under the Limitation Ordinance (Cap. 347).

Maker's signature: The maker must sign the promissory note. For a company, authorised signatories acting in accordance with the Companies Ordinance (Cap. 622) and the company's articles of association must sign. The Electronic Transactions Ordinance (Cap. 553) may permit electronic signatures in some contexts.

Witness details: Full name, HKID number, address, and signature of at least one independent witness — not legally required for Cap. 19 validity but strongly recommended for evidentiary purposes in any future dispute before the District Court or Court of First Instance.

Stamp duty notation: A reference to whether the note has been assessed and stamped under the Stamp Duty Ordinance (Cap. 117) via the IRD's e-Stamping portal, and if so, the stamp certificate number.

Default provisions: The consequences of non-payment on the due date, including the maker's liability for the payee's reasonable legal costs and debt collection expenses, the payee's right to demand immediate repayment of all outstanding principal and accrued interest under Section 89 of Cap. 19, and any agreed right to set off the outstanding amount against other sums owed between the maker and payee.

Statutory Framework and Negotiability. The Bills of Exchange Ordinance (Cap. 19) is the principal statute governing promissory notes in Hong Kong and is modelled on the UK Bills of Exchange Act 1882. Section 89 of Cap. 19 applies the provisions of the Ordinance relating to bills of exchange payable on demand to promissory notes, giving the note the same negotiable character as a bill of exchange. A holder in due course — a transferee who takes the note in good faith, for value, without notice of any defect in the maker's title — acquires the right to enforce the note free from personal defences that the maker might have raised against the original payee, a principle that makes promissory notes a reliable commercial instrument for financing and security purposes. Section 83 of Cap. 19 defines a bill of exchange and confirms the requirement for an unconditional order or promise; notes that include conditions precedent or subsequent do not qualify and are enforceable only as ordinary contracts. The Limitation Ordinance (Cap. 347) Section 4 provides a six-year limitation period for actions on a promissory note — running from the maturity date for fixed-term notes or from the date of demand for demand notes. Section 23 of Cap. 347 allows the limitation period to restart on a written acknowledgment or part payment by the maker, giving payees a mechanism to preserve their rights where a debt is partially settled. The Money Lenders Ordinance (Cap. 163) Section 24 renders void any loan agreement — including a promissory note — where the effective interest rate exceeds 60% per annum, regardless of whether the lender is licensed, as the rate is presumed extortionate; notes charging interest above this threshold cannot be enforced in Hong Kong courts.

Hong Kong promissory notes are frequently unenforceable or fail to serve their intended commercial purpose because of the following ten drafting and procedural errors.

1. Conditional promise instead of unconditional obligation. Section 89 of the Bills of Exchange Ordinance (Cap. 19) requires an unconditional promise to pay. A note that reads 'I promise to pay provided the goods are delivered' or 'subject to satisfaction with the services' is not a promissory note under Cap. 19 — it is an ordinary conditional contract, losing the negotiable instrument's evidential and enforcement advantages. The promise to pay must be absolute and independent of any other obligation.

2. Payment date expressed as 'when able' or 'on demand as convenient'. A payment date that is not fixed or determinable — such as 'when I am financially able' — does not satisfy Section 89 of Cap. 19. The instrument fails to qualify as a promissory note and is enforceable only as an ordinary contractual promise. Use 'on demand', a specific calendar date, or a defined period from the date of the note.

3. No interest rate specified for a commercial loan. An interest-free promissory note between commercial parties may create unexpected tax complications — the Inland Revenue Department may treat the waived interest as a deemed benefit under the Inland Revenue Ordinance (Cap. 112). Where interest is genuinely not charged, state this expressly. Where interest is intended, specify the rate, compounding frequency, and calculation method to prevent disputes.

4. Interest rate exceeding 60% per annum. Section 24 of the Money Lenders Ordinance (Cap. 163) renders any lending at an effective rate exceeding 60% per annum presumptively extortionate and unenforceable in Hong Kong courts. A promissory note carrying interest above this threshold — whether through a stated rate or through default interest plus fees — cannot be relied on in debt enforcement proceedings.

5. Corporate maker signs without proper board authority. A promissory note executed by a director without board authority does not bind the company under the Companies Ordinance (Cap. 622). Corporate promissory notes must be executed by authorised signatories in accordance with the company's articles of association, and the authority should be evidenced by a board resolution attached to or referenced in the note.

6. Failure to check Money Lenders Ordinance licensing requirements. A person who carries on the business of moneylending to individuals in Hong Kong without a licence under the Money Lenders Ordinance (Cap. 163) commits a criminal offence and the lending contract — including the promissory note — is unenforceable. Repeated lending at interest to individual borrowers, even between private individuals, may constitute an unlicensed moneylending business.

7. No witness details recorded. While a witness is not legally required for Cap. 19 validity, the absence of witness evidence creates practical difficulties if the maker later denies signing. In District Court debt proceedings, the absence of a witness may require expensive handwriting expert evidence. Recording at least one independent witness's full name, HKID number, and signature costs nothing and significantly strengthens the evidential position.

8. Failure to stamp under the Stamp Duty Ordinance (Cap. 117). An unstamped promissory note that is required to be stamped under Cap. 117 is inadmissible in Hong Kong civil proceedings until properly stamped — meaning the payee cannot sue on the note until a late-stamping penalty is paid and stamping is completed via the IRD's e-Stamping portal. Check the current stamp duty position before execution.

9. Principal amount stated only in numerals without words. A promissory note where the principal amount is expressed only in figures — without the amount also written in words — creates an ambiguity risk if the figures are altered or disputed. Express the principal in both numerals (HK$500,000) and words ('Hong Kong Dollars Five Hundred Thousand') to prevent any dispute about the amount intended.

10. No default provisions addressing the payee's enforcement costs. A promissory note that is silent on default gives the payee only the right to sue for the principal and interest — without a contractual right to recover legal costs. Under Hong Kong court rules, costs are at the court's discretion. Including an express clause making the maker liable for the payee's reasonable legal costs and debt collection expenses in the event of default provides a stronger incentive for timely repayment and better protects the payee's recovery.