Do you pay higher rates of SDLT if you buy your first UK home but already own a property abroad?

Introduction

This is a common Stamp Duty Land Tax question for people moving to the UK who have kept a home or investment property overseas. Many assume that if the overseas property is rented out, or is not their real family home anymore, it should not count. In many cases, however, it still does count for the higher rates of SDLT.

The key issue is not simply whether the new UK purchase will be your main home. The real question is whether, at the effective date of the purchase, you already own another major interest in a dwelling anywhere in the world and whether you are replacing a previous main residence.

The Question

A married couple living in the UK have been renting for several years and now want to buy a home here to live in as their family residence. They also own a flat abroad, which has been let to tenants for some time and is worth more than the minimum threshold relevant to the higher rates rules.

They want to know whether buying their first UK home will still trigger the higher rates of SDLT, even though the overseas flat is rented out and the UK property will be their only home in practical day-to-day terms.

Nick’s Explanation

Nick’s short answer was that, technically, the higher rates are likely to apply, although the full position always depends on the detailed facts. In anonymised form, his view was:

“Technically you are liable to pay higher rates of stamp duty, however there are various considerations worth bearing in mind.”

That is a fair summary of the law. The starting point is that an existing dwelling abroad can count in exactly the same way as a dwelling in the UK for the purposes of the SDLT higher rates rules. If the buyers are married or in a civil partnership and living together, the rules generally look at their combined position. So if either spouse owns another dwelling, that can be enough to trigger the surcharge.

The Law

The higher rates for additional dwellings are set out in Schedule 4ZA to the Finance Act 2003.

In broad terms, the surcharge applies if, at the end of the day of the transaction:

• the purchaser owns a major interest in another dwelling worth £40,000 or more, and
• the dwelling being bought is not a replacement for the purchaser’s only or main residence.

Several points matter here:

• A dwelling outside England and Northern Ireland can still count as “another dwelling” for these purposes.
• A rented property can still count as a dwelling owned by the purchaser. It does not stop counting just because someone else occupies it as a tenant.
• For married couples and civil partners living together, Schedule 4ZA contains spousal rules that generally treat them as one unit for this test.
• The replacement of main residence exception usually requires the purchaser to have disposed of a previous only or main residence and to be buying a new one as its replacement.

HMRC’s SDLT Manual discusses these rules in detail, including the treatment of overseas dwellings and the replacement of only or main residence test.

Analysis

Applying those rules step by step:

1. The buyers are purchasing a dwelling in England or Northern Ireland, so SDLT is in point.

2. At the end of the day of purchase, they will own the new UK property.

3. They also already own a flat abroad. If that flat is worth at least £40,000 and they hold a major interest in it, it counts as another dwelling for Schedule 4ZA purposes.

4. The fact that the overseas flat is rented out does not prevent it from counting. The legislation asks whether the buyers own another dwelling, not whether they live in it.

5. The fact that the UK purchase will become their family home also does not, by itself, remove the surcharge. The rules do not say “no surcharge if the new property will be your main residence”. They say the surcharge can be avoided where the purchase replaces a previous only or main residence.

6. If the buyers have been renting in the UK, they have not disposed of a previous residence that they owned. So the usual replacement exception is not available.

7. If they are married and living together, the legislation generally tests their combined ownership position. So it is not usually possible to argue that only one spouse owns the overseas dwelling and the other is buying the UK home free of the surcharge.

On those facts, the normal outcome is that the higher rates of SDLT apply.

There can be edge cases where the overseas property may not count, for example if the interest held is not a major interest, the value is below the statutory threshold, or the property is not a “dwelling” as a matter of law on the effective date. But those are fact-specific exceptions rather than the general rule.

If anyone is considering arguing that a property is not suitable for use as a dwelling, the threshold is now relatively high following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799. A property will not fall outside the dwelling rules merely because it needs repair, modernisation, or is inconvenient to occupy. The condition must be serious enough to take it outside the concept of a dwelling at the relevant date.

Outcome

In a case like this, the practical answer is usually yes: the higher rates of SDLT are likely to be payable on the UK purchase.

That is because:

• the buyers already own another dwelling abroad,
• that dwelling still counts even though it is rented out, and
• they are not replacing a previous owned main residence that has been disposed of.

So the purchase is commonly treated as the acquisition of an additional dwelling for SDLT purposes.

Practical Steps

If you are in this position, the sensible next steps are:

• confirm exactly who owns the overseas property and in what shares;
• check the market value of that property at the effective date of the UK purchase;
• confirm whether the interest owned is a major interest for Schedule 4ZA purposes;
• review whether any previous only or main residence has actually been sold, and if so when;
• consider whether any claimed “not suitable for use” argument is realistically sustainable in light of Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799;
• ensure the SDLT return reflects the position accurately at completion.

Where there is an overseas property, it is worth checking the position carefully before exchange or completion, because SDLT is self-assessed and errors can be expensive.

Conclusion

Owning a property abroad can trigger the higher rates of SDLT when you buy a home in the UK, even if that overseas property is rented out and even if the new UK purchase will be your real family home. Unless you are replacing a previous owned main residence or another specific exception applies, the surcharge will usually be due.

Legal References Used

• Finance Act 2003, Schedule 4ZA
• HMRC SDLT Manual guidance on higher rates for additional dwellings and replacement of only or main residence
• Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799

This page was last updated on 22 March 2026.

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