The non-resident SDLT surcharge was introduced on 1 April 2021 as an additional 2% on the standard SDLT rates for purchases of residential property in England and Northern Ireland by non-UK-resident buyers. It applies on top of all standard SDLT charges and on top of the 5% additional-dwelling surcharge where that also applies. The policy intent was to slow non-resident demand for prime UK residential property and to broaden the tax base. The result, for affected buyers, is one of the steepest combined SDLT rates anywhere in the developed world.
Who counts as non-resident
The SDLT residence test is specific to this surcharge and is different from the residence tests used elsewhere in UK tax. For an individual: you are non-resident for SDLT surcharge purposes if you have spent fewer than 183 days in the UK in the 12 months ending on the day of the transaction. So if you complete on a purchase on 1 May 2026, the look-back period is 2 May 2025 to 1 May 2026.
If you have spent 183 or more days in the UK in that look-back period, you are UK-resident for these purposes and the surcharge does not apply.
A subtle but important detail
The 183-day test is based on physical presence — you need to have been in the UK on at least 183 days, where a day is counted if you were in the UK at midnight. Citizenship is irrelevant. Domicile is irrelevant. Where you pay tax is irrelevant. What matters is the count of days physically in the UK in the 12 months before completion.
How the surcharge applies
The surcharge is 2% of the entire purchase price. So a £750,000 purchase by a non-resident attracts £15,000 of additional SDLT on top of all other charges.
It applies to residential property only — not to mixed-use property, not to non-residential property. It applies in England and Northern Ireland. Scotland and Wales (under LBTT and LTT) have no exact equivalent, though Scotland has been consulting on something similar.
How surcharges stack
When multiple SDLT surcharges apply to the same transaction, they add together. Consider a £750,000 second-home purchase by a non-resident:
Standard SDLT (£500k of slice at 5% etc): £27,500.
Additional-dwelling surcharge (5% × £750k): £37,500.
Non-resident surcharge (2% × £750k): £15,000.
Total SDLT: £80,000.
For a UK-resident owner-occupier on the same purchase: £27,500. So the surcharges roughly triple the bill.
The residence-based refund
If a buyer pays the non-resident surcharge but subsequently becomes UK-resident under the 183-day test, the surcharge can be reclaimed. The test is whether the buyer has been present in the UK for at least 183 days in any continuous 365-day period that falls within the two years either side of the completion date — i.e. the 12 months before completion (the standard look-back) OR the 12 months after completion.
So a buyer who completed on 1 May 2026 while non-resident, and then spent at least 183 days in the UK between 1 May 2026 and 1 May 2027, becomes eligible to reclaim the 2% surcharge. The reclaim is made by amending the SDLT return within the relevant timing window, with documentary evidence of UK presence (rental contracts, employment evidence, travel records).
Joint purchases
If a property is bought jointly by a UK-resident and a non-resident, the surcharge applies to the entire transaction — not just a proportional part. The presence of even one non-resident buyer triggers the surcharge on the whole purchase. This catches a lot of mixed-status couples by surprise.
Married and civil-partnered couples are treated as a single unit: if one partner has been in the UK for 183 days, that residence may be attributed to the other (subject to detailed conditions). Unmarried couples and other joint buyers have no such protection.
Practical implications
British citizens living abroad still pay it. A British passport holder living in Dubai or New York is non-resident for surcharge purposes if they spent fewer than 183 days in the UK in the relevant period.
People returning to the UK can plan around it. If you can time your purchase to after you've been in the UK 183 days, you avoid the surcharge entirely. If you can't, the reclaim mechanism is available once you cross 183 days within the post-completion year.
Companies have their own test. A non-UK-resident company is subject to the surcharge irrespective of where its directors live. The rules for companies and trusts are more complex than for individuals — specialist advice is essential.
If you paid the surcharge but spent 183+ days in the UK after completion
You may be entitled to a full refund of the 2% surcharge. Gather the documentation of your UK presence carefully — travel records, accommodation, employment — and either file a self-amendment or get specialist help. Combined with any other surcharge reclaims (the 5% additional-dwelling surcharge for example), the refund can be substantial.
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