Stamp Duty for Expats and Non-Residents: How the Surcharges Stack, and How to Get Them Back

SDLT for an overseas buyer is best understood as layers. The standard residential bands apply to everyone. The higher rates for additional dwellings add 5 percentage points to every band when the buyer already owns another dwelling; the addition rose from 3 to 5 points for completions on or after 31 October 2024 (SDLTM09845a, HMRC). The non-resident surcharge then adds a further 2 points on top of whatever the first two layers produce: GOV.UK confirms it applies on top of all other residential rates, including the zero band, first-time buyer rates, the additional dwelling rates and the company rates (GOV.UK).

Each layer has its own test, escape route and refund mechanism, which is why two buyers completing on identical houses on the same day can pay wildly different bills.

The standard residential bands for 2026/27 are 0% up to £125,000, 2% from £125,001 to £250,000, 5% from £250,001 to £925,000, 10% from £925,001 to £1.5 million and 12% above that (GOV.UK). The table below adds each surcharge combination.

A worked example: a non-resident buys a £500,000 buy-to-let while keeping a home overseas. The standard bands produce £15,000, the 5% higher rates add £25,000 and the 2% surcharge adds £10,000: £50,000 in total, an effective rate of 10%. A UK resident buying the same house as their only home pays £15,000. The gap is £35,000, all of it turning on the tests explained next. If the property will be let, the SDLT is only the entry cost: see our guides to how non-residents hold UK property and CGT on UK property for non-residents for the running and exit taxes.

The non-resident surcharge does not use the Statutory Residence Test, your visa status or your nationality. A British citizen working in Dubai pays it; a foreign national who has lived in London all year does not. For SDLT you are non-UK resident in relation to the purchase if you were not present in the UK on at least 183 days during the 12 months before it, a look-back that runs from 364 days before the effective date, normally completion, to the effective date itself. You count as present on any day you are in the UK at the end of that day (GOV.UK).

This cuts both ways. An expat who has already moved back and spent seven months in the UK before completing escapes the surcharge even while still non-resident for income tax. A departing owner who completes eight months after leaving is caught, because the 183 days are counted in the 12 months ending at completion, not over the tax year. Keep boarding passes and a day log, exactly as you would for the SRT.

For movers, timing is everything: complete after you have accumulated 183 midnight days and the 2% never arises. If the purchase cannot wait, you pay it and claim it back later.

An individual who pays the surcharge and then moves to the UK can recover the full 2%. The condition is presence in the UK on at least 183 days during any continuous 365-day period falling within the two year window that starts 364 days before the effective date and ends 365 days after it. In practice that means an arriving expat who buys on landing and then stays qualifies comfortably: the 365-day period can start on completion day and the 183 days accrue naturally (GOV.UK).

Two hard edges. First, the claim is an amendment to the SDLT return and must reach HMRC within 2 years of the effective date, so a delayed move can consume the whole window. Second, on a joint purchase the refund is only available if all the buyers are individuals and every one of them satisfies the 183-day rule, though each can use a different 365-day period; buying jointly with a company, or with an individual who never moves, locks the 2% in permanently.

The higher rates for additional dwellings are where overseas buyers most often go wrong, because the test is global. Condition C in HMRC's manual asks whether the purchaser owns, or is treated as owning, a major interest in another dwelling anywhere in the world at the end of the day of completion, and it is met where that interest is worth £40,000 or more at the date of the transaction (SDLTM09780, HMRC). A half share of a family apartment in Madrid, a condo in Singapore, a house in Lagos: each one makes a London purchase an additional dwelling.

Marriage widens the net further. Where one spouse or civil partner buys alone, the transaction is still charged at the higher rates if the conditions would be met by either the purchaser or their spouse, unless the couple are separated by court order, deed of separation or in circumstances likely to be permanent (SDLTM09820, HMRC). Putting the new house solely in the name of the spouse who owns nothing does not work. Transfers of interests solely between spouses living together have been disregarded from the higher rates since 22 November 2017, which at least means reorganising ownership between the two of you does not itself trigger a charge.

The £40,000 figure is a cliff edge, not an allowance: a foreign holding worth £39,000 is ignored entirely, one worth £41,000 counts in full, so value an overseas share honestly, in sterling, at the completion date before the conveyancer submits the return.

The higher rates are switched off when you are replacing your main residence, even if you own other property around the world. GOV.UK's condition is that your previous main home is sold within 36 months of the new purchase completing (GOV.UK). If the old home is sold first, the new purchase simply completes at standard rates. If the sale has not happened yet, you pay the higher rates upfront and reclaim them once it goes through: HMRC will repay where the previous main home is sold within 3 years, with the claim due by the later of 12 months after the sale and 12 months after the filing date of the SDLT return on the new home (GOV.UK).

Sales that overrun the 3 years only qualify in exceptional circumstances such as government-imposed restrictions or an action of a public authority; ordinary conveyancing delay does not count. Two expat points. The home being replaced does not have to be in the UK: selling your apartment in Dubai and buying a family home in Surrey can qualify, provided the Dubai flat was genuinely your main residence. And the exception removes only the 5%: a buyer who fails the 183-day test still pays the 2% on the whole price. Whether the sale of the old home is itself taxed in the UK is covered in our guide to Private Residence Relief.

First-time buyer relief charges 0% on the first £300,000 and 5% on the portion from £300,001 to £500,000, and disappears entirely if the price exceeds £500,000 (GOV.UK). The catch for anyone with an international history is the definition: a first-time buyer must never, alone or with others, have acquired a major interest in a dwelling or an equivalent interest in land situated anywhere in the world, and that includes acquisitions by gift or inheritance (SDLTM29845, HMRC). Inheriting a share of a parent's house abroad a decade ago ends first-time buyer status permanently. Every joint buyer must qualify, and you must intend to occupy the property as your main residence, so the relief never applies to a buy-to-let.

A genuine first-time buyer who happens to be non-resident keeps the relief but still pays the 2% surcharge on top of the relieved rates. On a £400,000 first home that means 2% on the first £300,000 and 7% on the last £100,000: £13,000, against £5,000 for a UK-resident first-time buyer. The steeper cliff is a forgotten property, because owning any dwelling anywhere both kills the relief and triggers the 5% higher rates. On the same £400,000 purchase the standard bands give £10,000 (0% on £125,000, then £2,500, then £7,500), the higher rates add 5% of the full price (£20,000) and the surcharge adds another 2% (£8,000): £38,000 in all. One inherited share of an overseas house turns a £5,000 bill into a £38,000 one.

Companies and other non-natural persons buying a dwelling for more than £500,000 pay a flat rate on the whole price: 17% for transactions with an effective date on or after 31 October 2024, up from 15% before (GOV.UK; SDLTM09727, HMRC). The 2% non-resident surcharge applies to companies too, so a non-UK resident company buying a £900,000 house pays 19% on all of it: £171,000. A company is non-resident for the surcharge unless it is UK resident for Corporation Tax, and, critically for expats, a UK-incorporated close company under the direct or indirect control of non-UK resident persons is treated as non-resident in relation to the transaction, with exceptions for REITs and PAIFs (GOV.UK). Setting up a UK Ltd from abroad to hold the flat does not avoid the 2%.

Reliefs from the flat 17% exist for property rental businesses, developers and traders, properties open to the public, employee accommodation and farmhouses (GOV.UK). A genuine letting company escapes the flat rate but not the surcharges: it pays the banded rates plus 5% plus 2% if non-resident, a top marginal rate of 19% again. It is then usually inside the Annual Tax on Enveloped Dwellings, an annual charge with its own return filed on or after 1 April in each chargeable period and five-yearly revaluations (GOV.UK). ATED reliefs exist, including for dwellings let to a third party on a commercial basis, but they are not automatic: a relief that reduces the charge to nil is claimed by filing a Relief Declaration Return through the ATED online service (GOV.UK).

Our separate guide to ATED and the non-resident property surcharges works through when corporate ownership still makes sense despite these charges. The honest summary: for a single home or a small rental, it usually does not, and the SDLT entry cost is a large part of why.

For the 2% surcharge the starting rule is harsh: if any individual buyer is non-UK resident under the 183-day test, all the buyers are treated as non-resident and the whole transaction is surcharged. The saving grace is for married couples and civil partners: where spouses buy together, are not separated and neither is acting as a trustee, one of them being UK resident makes both of them UK resident in relation to the transaction, and no surcharge arises (GOV.UK). The exemption follows the marriage certificate, not the mortgage: an unmarried couple in the identical position pays the full 2%, refundable only if every buyer later meets the 183-day rule.

The higher rates work the same way in the same direction. For joint buyers the transaction is charged at the higher rates if it would be a higher rates transaction for any one of the purchasers considered individually, or for the spouse of any of them (SDLTM09764, HMRC). One sibling who owns a £45,000 share of a property abroad puts the entire joint purchase into the 5% column, however small their share of the new house. Before adding a parent or partner to the deeds, run both tests against every name going on the transfer; the cheapest fix is deciding who buys before exchange, not chasing a refund after completion.

Conveyancers calculate SDLT from the answers you give them; they rarely interrogate a worldwide property list, a 183-day count or a corporate control chain. That is the gap we fill. Horizon UK Tax Solutions is a Chartered Tax Adviser practice built for cross-border cases: we confirm your position under both surcharge tests in writing before you exchange, calculate the exact SDLT across every scenario you are weighing, and prepare surcharge and higher rates refund claims with the evidence HMRC expects. Where the purchase sits inside a bigger move, arrival timing, letting the property, or the eventual sale, we plan the SDLT alongside the rest rather than in isolation, and our guide to working with a UK tax adviser explains how engagement and HMRC authorisation work from abroad.

Everything is a fixed fee agreed upfront, never an hourly meter: non-resident and expat work starts from £550 and complex advisory work from £750. If you have a completion date in the diary and a question about either surcharge, book a free 30 minute clarity call and we will tell you straight away whether the answer needs a written opinion or just a pointer.