Late stamping can expose a document to a penalty of two times the duty for a delay of no more than one month, rising to ten times in other cases. The Collector may remit a penalty wholly or partly, but that is discretionary—do not plan around remission. The ordinary 30-day period runs in calendar days, subject to the specific severe-weather rule below.
The 30-day rule
Under the Stamp Duty Ordinance (Cap. 117), an agreement for sale and purchase of residential property must be stamped within 30 days of execution of the earliest agreement for the same transaction.
In most cases, this means 30 days from the date the Provisional Agreement for Sale and Purchase (PASP) is signed.
Key facts:
- Calendar days, not working days
- Weekends and General Holidays are included in the count
- If the last day of the stamping period falls on a Severe Weather Day (Typhoon Signal No. 8 or above, or Black Rainstorm Warning), the deadline extends to the next day that is not a public holiday or Severe Weather Day. Severe weather on earlier days within the period does not extend the deadline. (See IRD Stamping Circular 02/2024.)
- The Inland Revenue Department (IRD) administers stamping
Since 30 June 2011, there is no deferment option for stamp duty on residential property transactions. The full duty must be paid within 30 days.
The penalty escalator
Late stamping penalties escalate fast:
| Delay after 30-day deadline | Penalty |
|---|---|
| Up to 1 month | 2 times the stamp duty |
| 1–2 months | 4 times the stamp duty |
| Over 2 months | 10 times the stamp duty |
Voluntary disclosure
If the delay was not deliberate and you come forward voluntarily, the Collector will normally apply a reduced penalty:
Reduced penalty = 14% × stamp duty × (days delayed ÷ 365)
Subject to a minimum of HK$500. The actual remission may be adjusted depending on the circumstances.
Worked example
Property value: HK$8,000,000. Under Scale 2, this falls in the 3% band (HK$6,642,861–HK$9,000,000), so AVD = 3% × HK$8,000,000 = HK$240,000.
| Scenario | Penalty | Total payable |
|---|---|---|
| On time (within 30 days) | None | HK$240,000 |
| 3 weeks late | 2× = HK$480,000 | HK$720,000 |
| 6 weeks late | 4× = HK$960,000 | HK$1,200,000 |
| 3 months late | 10× = HK$2,400,000 | HK$2,640,000 |
At the 3-month mark, the penalty alone is more than double the original duty. Stamp duty is one of the most expensive deadlines to miss in Hong Kong — and one of the easiest to avoid, if you track it.
Current residential AVD rates (from 26 February 2026)
Since 28 February 2024, Hong Kong's property stamp duty regime has been dramatically simplified. Three demand-side categories were abolished in one sweep:
- Buyer's Stamp Duty (BSD): Abolished (previously up to 15% for non-permanent residents)
- Special Stamp Duty (SSD): Abolished (previously up to 20% for quick resales)
- New Residential Stamp Duty (NRSD): Abolished
The main remaining duty is Ad Valorem Duty (AVD). Residential instruments executed from 26 February 2026 use Part 1 of Scale 1 or Scale 2, including a new 6.5% top rate above HK$109,574,470. Non-residential instruments use Scale 3 and retain a 4.25% top rate. The residential bands are:
| Property value | AVD rate |
|---|---|
| Up to HK$4,000,000 | HK$100 |
| HK$4,000,001 – HK$4,323,780 | HK$100 + 20% of excess over HK$4,000,000 |
| HK$4,323,781 – HK$4,500,000 | 1.5% |
| HK$4,500,001 – HK$4,935,480 | HK$67,500 + 10% of excess over HK$4,500,000 |
| HK$4,935,481 – HK$6,000,000 | 2.25% |
| HK$6,000,001 – HK$6,642,860 | HK$135,000 + 10% of excess over HK$6,000,000 |
| HK$6,642,861 – HK$9,000,000 | 3% |
| HK$9,000,001 – HK$10,080,000 | HK$270,000 + 10% of excess over HK$9,000,000 |
| HK$10,080,001 – HK$20,000,000 | 3.75% |
| HK$20,000,001 – HK$21,739,120 | HK$750,000 + 10% of excess over HK$20,000,000 |
| HK$21,739,121 – HK$100,000,000 | 4.25% |
| HK$100,000,001 – HK$109,574,470 | HK$4,250,000 + 30% of excess over HK$100,000,000 |
| HK$109,574,471 and above | 6.5% |
With BSD and NRSD gone, the distinction between buyer types no longer triggers those former additional duties. The applicable AVD scale can still depend on the property and transaction, so check the IRD AVD guidance before relying on a rate.
It is not just property sales
Stamp duty applies to a wider range of documents than most people realise:
- Tenancy agreements: Must be stamped within 30 days of execution
- Share transfers: Must be stamped within 2 days (for stock exchange transactions) or 30 days (for off-exchange transfers)
- Lease agreements: Stamped within 30 days
The same late penalty structure applies to all document types.
Four rules for not getting caught
- Count from the PASP, not the ASP — the clock starts at the earliest agreement (see our conveyancing deadline guide for the full timeline)
- Do not assume holiday extensions. CNY, Easter, weekends — the 30-day count runs through all of them
- Aim for day 20–25, not day 29. Buffers cost nothing; penalties cost multiples of the duty
- Use e-Stamping if the deadline falls on a weekend or holiday. The IRD's online system runs 24/7 — you can stamp when the physical Stamp Office is closed
Where the calculator helps
While the stamp duty deadline itself runs in calendar days, the calculator is useful for:
- Counting the 30 calendar days from a PASP date to identify the exact deadline
- Checking whether the deadline falls during a holiday cluster (CNY, Easter)
- Planning the conveyancing working-day milestones that feed into the stamping timeline — see working days vs calendar days for counting method details
For calculator details, see the Info Guide.
