Stamp Duty Land Tax is the single largest upfront cost most foreign buyers face when purchasing UK residential property — and the one most often miscalculated. For a UK resident buying their only home it is a familiar banded calculation. For an overseas buyer, three separate surcharges can stack on top of the standard rates, and one of them — the 17% flat corporate rate — can change the entire structure of the transaction.
Non-resident buyers of UK residential property pay standard SDLT plus a 2% non-resident surcharge on every band. If the property is not your only home, a further 5% additional dwelling surcharge stacks on top. For companies buying residential property over £500,000, a 17% flat rate is the headline default — but most genuine property rental businesses qualify for relief. The right analysis is fact-sensitive: on a £3–4m property the difference between £400,000 and £700,000+ of SDLT can turn on a single relief question.
👉 Part of our foreign-investor series: This article goes deep on SDLT specifically. For the full picture of how all UK property taxes fit together for overseas buyers, see our pillar guide: Investing in UK Property as a Foreigner 2026/27.
Why SDLT Matters More for Foreign Buyers
For UK resident buyers of their main home, SDLT is the standard banded calculation. For foreign buyers the picture is materially different — three separate surcharges can apply, and one (the 17% corporate rate) can reshape the deal. This guide sets out the rules that apply specifically to foreign buyers in 2026/27, with worked examples and a clear walkthrough of how the reliefs against the 17% rate work in practice.
Standard SDLT Rates 2026/27
From 1 April 2025, the standard residential SDLT rates returned to the following bands. These apply to a UK resident individual buying their only or main residence — foreign buyers almost always face surcharges on top.
| Property price band | Standard SDLT rate |
|---|---|
| Up to £125,000 | 0% |
| £125,001 to £250,000 | 2% |
| £250,001 to £925,000 | 5% |
| £925,001 to £1.5 million | 10% |
| Over £1.5 million | 12% |
The 5% Additional Dwelling Surcharge
If you already own any residential property anywhere in the world at the point you complete your UK purchase, the 5% additional dwelling surcharge applies — adding 5% to each band of the standard calculation.
📌 Key points
- The surcharge increased from 3% to 5% on 31 October 2024.
- It applies even where your existing property is overseas — e.g. your family home in the UAE.
- It applies regardless of the value of the existing property.
- Almost all foreign investors are caught, because they own residential property in their home country.
- The "replacing your main residence" exception applies only if you sell your current main residence within 36 months — rarely available to foreign investors.
On a £1 million property the 5% surcharge alone adds £52,500 (taking the bill from £41,250 to £93,750) — more than doubling the SDLT.
The 2% Non-Resident Surcharge
Introduced on 1 April 2021, a separate 2% surcharge applies to all residential SDLT rates where the buyer is non-UK resident for SDLT purposes.
The SDLT residence test is different from income tax residence
This is one of the most commonly misunderstood points. The SDLT residence test is based purely on physical presence — not the Statutory Residence Test used for income tax.
- You are UK resident for SDLT if you have been physically present in the UK for 183 days or more in any continuous 365-day period within the 12 months before completion.
- Visa type, immigration status, citizenship and nationality are all irrelevant — only days of physical presence count.
- For joint purchases, if any buyer is non-UK resident the surcharge applies to the entire transaction — there is no apportionment.
- Companies controlled by non-UK residents are also caught — including UK-incorporated companies under non-resident control.
💡 The refund window
- If you become UK resident within 12 months after completion (by spending 183 days in the UK during that period), you can apply to refund the 2% surcharge through HMRC's SDLT amendment process. The cash flow burden remains until the refund is approved.
Not sure which surcharges apply to you?
We model your exact SDLT position before you commit — including refund eligibility and corporate relief.
The 17% Corporate Flat Rate
Where a company, a partnership with at least one corporate member, or a collective investment scheme (collectively "non-natural persons") purchases UK residential property for more than £500,000, a flat 17% SDLT rate is the headline default. This rate increased from 15% to 17% on 31 October 2024.
⚠ The 17% rate is the headline, not the typical outcome
Most genuine property investment companies do not pay the 17% rate because relief is available. The reliefs are substantial and are the centrepiece of most legitimate corporate property structures. Treating the 17% rate as the inevitable consequence of corporate ownership is one of the most common mistakes we see in foreign-investor planning.
The Reliefs Explained
Several reliefs eliminate the 17% rate and allow the standard banded rates to apply instead (with the 5% additional dwelling and 2% non-resident surcharges still applying as relevant). The principal relief is:
Property rental business relief
The most commonly relevant relief. It applies where the company acquires the property to hold for letting to third parties on commercial terms. Key conditions:
- The property is acquired exclusively for letting to third parties.
- Those third parties are not connected with the company or its beneficial owners — letting to family members or controlling shareholders disqualifies the relief. This is the critical condition.
- Letting is on commercial terms (arm's-length rent, normal commercial conditions).
- The company is carrying on a property rental business at the time of acquisition (the property need not yet be let, but there must be genuine intention).
- Relief is monitored over a three-year control period — withdrawal of relief and a clawback charge apply if the conditions cease to be met.
Other reliefs include property developer relief and property trader relief (for property held as trading stock for resale by a genuine development or trading business). All are subject to anti-avoidance and the three-year control period.
Worked Example: £3m London Flat
Consider a Dubai-based investor buying a £3 million flat in central London who already owns a home overseas.
| Scenario | SDLT | Effective rate |
|---|---|---|
| Personal purchase (standard + 5% + 2%) | £421,250 | 14.0% |
| Company, 17% flat rate (no relief) | £510,000 | 17.0% |
| Company with rental business relief (standard + 5% + 2%) | £421,250 | 14.0% |
The figures are illustrative and the precise calculation depends on the band-by-band computation and the buyer's exact circumstances — but the principle holds: the difference between an unrelieved corporate purchase and a properly structured one runs into six figures on a property of this size.
⭐ Key Takeaways
- Non-residents pay standard SDLT + a 2% non-resident surcharge on every band.
- Owning any residential property worldwide triggers the 5% additional dwelling surcharge.
- The SDLT residence test is days-based (183 in any rolling 365), not the income-tax SRT.
- The 17% corporate rate is the headline — genuine rental businesses usually relieve it away.
- Get the relief analysis right before completion; the three-year control period matters.
Frequently Asked Questions
Yes. Non-UK residents pay standard SDLT plus a 2% non-resident surcharge on every band. If they already own residential property anywhere in the world, a further 5% additional dwelling surcharge also applies.
Where a company, a partnership with a corporate member, or a collective investment scheme buys UK residential property over £500,000, a flat 17% rate is the headline default. Most genuine property rental and development businesses qualify for relief that removes it and restores the standard banded rates.
Purely on physical presence — you are UK resident for SDLT if present in the UK for 183 days or more in any continuous 365-day period within the 12 months before completion. Visa, citizenship and immigration status are irrelevant, and it is different from the Statutory Residence Test used for income tax.
Yes — if you become UK resident within 12 months after completion by spending 183 days in the UK during that period, you can apply to HMRC for a refund. The cash flow burden remains until the refund is approved.
📋 Register of Overseas Entities
Overseas companies buying UK residential property face the corporate SDLT rate — and a separate ROE obligation. See our complete guide to the Register of Overseas Entities for the registration and verification requirements.