Stamp Duty Refund Key Points
- 3-year rule: sell your previous main residence within 36 months to reclaim the additional property surcharge
- Claim deadline: within 12 months of the sale of your previous home, or 12 months of the SDLT filing date — whichever is later
- HMRC processing time: typically 15 working days for straightforward claims
- Overpayment claims: amend your SDLT return within 12 months, or write to HMRC within 4 years
- Refunds are available for the 5% additional property surcharge and the 2% non-UK resident surcharge
- You cannot claim a refund simply because property values have fallen after purchase
When Can You Claim a Stamp Duty Refund?
There are several circumstances where you may be entitled to a stamp duty refund from HMRC. The most common scenario involves the additional property surcharge, but refunds are also available for overpayments and other specific situations.
1. Replacing Your Main Residence (The 3-Year Rule)
This is the most common stamp duty refund scenario. If you bought a new main residence before selling your previous one, you will have paid the additional property surcharge (currently 5%) on your purchase because you temporarily owned two residential properties.
You can claim a refund of the surcharge if you sell your previous main residence within 36 months (3 years) of purchasing the new property. The 36-month period runs from the day after completion on your new property to the day your old property sale completes.
2. Overpayment of SDLT
If you paid more stamp duty than you should have — for example, if first-time buyer relief was not applied when it should have been, or the wrong property value was used — you can claim a refund by amending your SDLT return.
- Within 12 months of filing: amend your SDLT return online or by post
- After 12 months but within 4 years: write to HMRC requesting an overpayment relief
3. Non-UK Resident Surcharge Refund
If you paid the 2% non-UK resident surcharge but subsequently become UK resident within 12 months of the purchase (by spending 183+ days in the UK), you can claim a refund of the 2% surcharge. The claim must be made within 2 years of the completion date.
4. Multiple Dwellings Relief (MDR) Correction
If you purchased multiple dwellings in a single transaction and your solicitor did not apply Multiple Dwellings Relief (MDR), you may be able to amend your return to claim the relief retrospectively, resulting in a refund of the overpaid SDLT.
How to Claim a Stamp Duty Refund
The process for claiming a stamp duty refund depends on what type of refund you are seeking and how much time has passed since the original transaction.
Step 1: Gather Your Information
Before starting your claim, you will need:
- Your SDLT unique transaction reference number (UTRN) — found on your SDLT5 certificate
- The effective date (completion date) of the original purchase
- The sale completion date of your previous property (for surcharge refunds)
- Details of the property addresses involved
- Your bank account details for the refund payment
- Evidence of the sale (such as the completion statement)
Step 2: Submit Your Claim
For Additional Property Surcharge Refunds
Write to HMRC at the following address, including all the information above:
Stamp Duty Land Tax
HM Revenue and Customs
BX9 1HD
United Kingdom
Alternatively, if you are within 12 months of the original filing date, your solicitor can amend the SDLT return online.
For Overpayment Refunds
If within 12 months of filing, amend your SDLT return. After 12 months, write to HMRC at the address above, clearly explaining the overpayment and providing evidence.
Step 3: Wait for Processing
HMRC aims to process refund claims within 15 working days. Complex claims may take up to 40 working days. If HMRC needs additional information, they will write to you, which extends the timeline.
How Much Will You Get Back?
The refund amount depends on your situation. For additional property surcharge refunds, HMRC will recalculate your SDLT as if the surcharge had never applied, and refund the difference.
| Property Price | Surcharge Paid (5%) | Refund Amount |
|---|---|---|
| £200,000 | £10,000 | £10,000 |
| £300,000 | £15,000 | £15,000 |
| £400,000 | £20,000 | £20,000 |
| £500,000 | £25,000 | £25,000 |
| £750,000 | £37,500 | £37,500 |
The refund equals the full surcharge amount because the surcharge is calculated as a flat percentage of the total purchase price.
Common Refund Scenarios
Chain Delays and the 36-Month Deadline
If your old property sale is delayed beyond 36 months due to a broken chain or other factors outside your control, HMRC does not grant extensions. The 36-month deadline is strict. However, exceptional circumstances such as government-imposed restrictions (as during COVID-19) may lead to HMRC exercising discretion. Always document the reasons for any delay.
Divorce and Separation
If you purchased a new property following a divorce or separation, and your former matrimonial home is being sold as part of the settlement, you may still qualify for a refund if the sale completes within 36 months of your new purchase. The rules can be complex where court orders are involved — seek specialist tax advice.
Inherited Properties
If you owned an additional property because you inherited it, and you paid the surcharge on a subsequent purchase, you cannot claim a refund simply by disclaiming or selling the inherited property after the 36-month window. However, if you sell within 36 months, the standard refund rules apply.
Related Guides
- Stamp duty surcharge explained — understand the 5% additional property surcharge
- Stamp duty on second homes — rules for second property purchases
- Stamp duty rates 2026 — all current SDLT rate tables
- Stamp duty exemptions — reliefs that may reduce your bill
- Free stamp duty calculator — calculate your SDLT instantly
Frequently Asked Questions About Stamp Duty Refunds
Yes, if you paid the additional property surcharge when buying a new main residence before selling your previous one, you can claim a refund. You must sell your previous main residence within 36 months of purchasing the new property and claim the refund within 12 months of the sale or 12 months of the SDLT filing date, whichever is later.
HMRC aims to process refund claims within 15 working days. Complex cases can take up to 40 working days. If HMRC needs more information from you, the timeline will extend further. Refunds are paid by bank transfer or cheque.
The 3-year rule means you must sell your previous main residence within 36 months of purchasing your new one to qualify for a refund of the additional property surcharge. The 36-month period runs from the day after your new purchase completed to the day your old property sale completes. The deadline is strict — HMRC does not grant extensions.
Write to HMRC’s Stamp Duty Land Tax office (BX9 1HD) with your UTRN, details of both transactions, evidence of the sale, and your bank details. Alternatively, if within 12 months of filing, your solicitor can amend the SDLT return online. Always include your SDLT5 certificate reference.
Yes. If you overpaid SDLT for any reason — such as first-time buyer relief not being applied, or the wrong buyer category being used — you can amend your SDLT return within 12 months of the filing date. After 12 months, you can write to HMRC claiming overpayment relief within 4 years.