Stamp Duty Land Tax, usually shortened to SDLT, is the UK tax payable on most residential property purchases in England and Northern Ireland. Scotland operates Land and Buildings Transaction Tax (LBTT) and Wales operates Land Transaction Tax (LTT) under separate frameworks. SDLT is charged in bands and is paid by the buyer at completion, with the conveyancer typically handling the return and payment as part of the transaction.
For non-resident, expat, and additional-property buyers, SDLT carries two specific surcharges that can stack on a single transaction. This extended definition covers SDLT itself, the non-resident surcharge, the additional dwelling surcharge, and first-time buyer relief, since the four concepts apply jointly in expat property purchases.
Key Insights
- In England and Northern Ireland, the standard SDLT nil-rate band is £125,000 from 1 April 2025, with rates rising in bands above that threshold.
- The non-resident SDLT surcharge is an additional 2% charge applied to non-UK residents, layered on top of the standard SDLT rates and any additional dwelling surcharge.
- The additional dwelling surcharge is currently 5% (increased from 3% with effect from 31 October 2024), applied to additional residential properties such as second homes and buy-to-lets.
- First-time buyer relief offers a higher £300,000 nil-rate threshold on properties costing up to £500,000, subject to specific conditions on the buyer’s prior ownership history.
- The two surcharges can stack on the same transaction, so a non-resident buyer of an additional property can face combined SDLT rates around 7 percentage points above the standard rates at every band.
Standard SDLT and the Nil-Rate Band
SDLT applies to residential property purchases in England and Northern Ireland, with rates charged on the portion of the purchase price falling within each band. The standard nil-rate band is £125,000 from 1 April 2025, having reverted from the temporary £250,000 threshold that ended on 31 March 2025. Above the nil-rate band, rates rise progressively to 12% on the portion of the purchase price above £1.5 million. The conveyancer typically files the SDLT return with HMRC and pays the tax within 14 days of completion. Companies, partnerships with corporate members, and other non-natural persons follow separate rules, including a 17% flat rate (increased from 15% on 31 October 2024) on residential acquisitions over £500,000, subject to reliefs.
The Non-Resident SDLT Surcharge
In England and Northern Ireland, the non-resident SDLT surcharge is an additional 2% charge applied to buyers treated as non-UK resident under the SDLT residence rules. For individuals, the basic test is whether the buyer was present in the UK for at least 183 days in the 12 months ending on the effective date of the transaction. This is a separate test from the Statutory Residence Test used for income tax: a person can be UK-resident for income tax purposes and still be treated as non-resident for SDLT, depending on the timing of physical presence. Joint purchases follow the rule that if any one buyer is non-resident, all are treated as non-resident for surcharge purposes, subject to limited exceptions. A refund may be available only in specific circumstances where the later residence conditions are met.
The Additional Dwelling Surcharge and First-Time Buyer Relief
The additional dwelling surcharge is a higher-rate SDLT charge applied to buyers acquiring an additional residential property, such as a second home or buy-to-let, unless an exemption applies. The surcharge is currently 5%, having increased from 3% with effect from 31 October 2024. It sits on top of the standard SDLT bands and is separate from the non-resident SDLT surcharge, although both can apply to the same purchase.
First-time buyer relief operates in the opposite direction. It can apply when a buyer is purchasing their first residential property in England or Northern Ireland, subject to specific conditions. The relief offers a higher nil-rate threshold of £300,000 on properties costing up to £500,000. The rules depend on the buyer’s legal ownership history rather than only their borrowing history, so being a first-time mortgage borrower is not enough on its own.
Frequently Asked Questions
How do the two SDLT surcharges stack for non-resident buyers?
Both surcharges apply band by band on top of standard SDLT rates, not as a single flat charge on the total. For a non-resident individual buying a £500,000 second residential property in England, the calculation runs at 7% on the first £125,000 (0% standard plus 5% additional dwelling plus 2% non-resident), 9% on the next £125,000 (2% standard plus the two surcharges), and 12% on the next £250,000 (5% standard plus the two surcharges). The total comes to £50,000, equivalent to 10% of the purchase price. The combined effect is significant for expat investors and warrants modelling before exchange. Companies face a separate framework, with the 17% flat rate replacing the standard tiered rates entirely above £500,000, subject to reliefs.
Who counts as non-resident for the SDLT surcharge?
For SDLT purposes, an individual is non-resident if not present in the UK for at least 183 days during the 12 months ending on the effective date of the transaction. Days are counted based on physical presence at midnight anywhere in the UK, not only in England or Northern Ireland. The test is purely time-based and does not consider domicile or other factors. It is a separate test from the Statutory Residence Test used for income tax, so a buyer can be UK-resident for income tax but non-resident for SDLT. Joint purchases follow the more punitive rule: if any single buyer is non-resident, the surcharge applies to the whole transaction, subject to limited exceptions for spouses or civil partners living together where one is UK-resident.
Can first-time buyer relief apply to UK expats buying from overseas?
First-time buyer relief is not restricted by residence: a non-UK resident can in principle access the relief, provided the underlying conditions are met. The conditions include: the buyer not having previously owned a freehold or leasehold residential property anywhere in the world, the property being intended as the buyer’s only or main residence, a price ceiling of £500,000, and a property location in England or Northern Ireland. For an expat buying a UK property as their intended main residence on return, the relief can apply. Where the property is bought as a buy-to-let or second home, the relief does not apply, and the additional dwelling surcharge typically applies instead. The non-resident SDLT surcharge can still apply alongside first-time buyer relief where the buyer is non-UK resident.
Important Considerations
The information in this entry is general educational reference only and does not constitute tax or legal advice. SDLT rates, thresholds, surcharges, and reliefs change over time, and the tax position on a UK property purchase depends on individual circumstances including residence status, prior ownership history, ownership structure, and the property’s intended use. For personalised guidance, professional tax or legal advice is appropriate.