Do I pay the 2% non-UK resident SDLT surcharge and the 3% higher rates when returning to the UK to buy a main home?

Introduction

This is a common Stamp Duty Land Tax (SDLT) question for people returning to the UK after living abroad. The confusion usually comes from the fact that SDLT has its own residence test for the 2% non-UK resident surcharge, and that test is not the same as being employed in the UK or paying UK income tax. There is also a separate question about the 3% higher rates for additional dwellings if the buyer still owns another residential property at the time of purchase.

In a situation where someone has sold a former overseas main home, has returned to the UK, and still owns a UK buy-to-let property, both issues may need to be considered carefully.

The Question

A buyer has returned to the UK after several years abroad and is purchasing a new UK home to live in as their main residence. Before buying, they sold their former main residence overseas. They also still own a UK buy-to-let flat and are living there temporarily until the new purchase completes.

The buyer wants to know:

• whether the 2% non-UK resident SDLT surcharge applies because they have not yet been back in the UK for 183 days;
• whether the 3% higher rates for additional dwellings also apply because they still own the buy-to-let flat; and
• whether working in the UK and paying UK tax makes them UK resident for SDLT purposes.

Nick’s Explanation

Nick’s core point was that SDLT uses a specific residence test for the 2% surcharge. In anonymised form, his explanation was:

“If you have recently moved to the UK you will likely be assessed as non-UK resident for SDLT purposes unless you have spent at least 183 days in the UK during the relevant 12-month period. If the surcharge is paid on completion and you later satisfy the 183-day test within 12 months after the purchase, you may be able to claim a refund.”

On the 3% issue, Nick explained that owning another dwelling can trigger the higher rates. He also noted that, in some replacement of main residence cases, a refund may be available if the old main residence is disposed of within the permitted period.

The important refinement is that the replacement of main residence rules need to be applied carefully. Where the buyer has already sold their previous main residence before buying the new one, the 3% surcharge may not apply at all, even if they still own another property such as a buy-to-let flat, provided the statutory replacement conditions are met.

The Law

There are two separate SDLT questions here.

First, the 2% non-UK resident surcharge. This is imposed by Schedule 9A to the Finance Act 2003. For individuals, the SDLT residence test is based broadly on physical presence in the UK for at least 183 days in a relevant 364-day period. This is a special SDLT test. It is not determined simply by citizenship, ordinary residence, employment status, or whether the person is paying UK income tax.

Second, the 3% higher rates for additional dwellings. These are contained in Schedule 4ZA to the Finance Act 2003. Broadly, the higher rates can apply where, at the end of the day of the transaction, the buyer owns an interest in another dwelling and is not replacing their only or main residence. If the purchase is a genuine replacement of the buyer’s only or main residence, the higher rates may not apply even though another property is retained.

In broad terms, a purchase can count as a replacement of only or main residence where:

• the buyer disposes of a previous only or main residence; and
• the new dwelling is intended to be the buyer’s only or main residence; and
• the timing conditions in Schedule 4ZA are met.

If the old only or main residence was sold before the new purchase, the replacement test may be satisfied immediately. If the old only or main residence is sold after the new purchase, the higher rates may be payable first and then reclaimed if the sale happens within the permitted period.

Analysis

The position can be analysed in two stages.

First, the 2% non-UK resident surcharge.

If the buyer returned to the UK only shortly before completion, they are likely to be treated as non-UK resident for SDLT purposes on the effective date of the transaction unless they already meet the 183-day test in the relevant period. Starting work in the UK and paying UK tax does not by itself remove the surcharge. SDLT residence is tested under the specific statutory rule in Schedule 9A.

That means the 2% surcharge is likely to be payable on completion if the 183-day threshold has not yet been met. However, if the buyer then goes on to satisfy the statutory day-count test within the period allowed after completion, a repayment claim may be available.

Secondly, the 3% higher rates for additional dwellings.

This is where the detail matters. A buyer who still owns a buy-to-let flat at completion does not automatically pay the 3% surcharge if the new purchase is replacing a previous only or main residence. The question is not simply whether another property is owned. The question is whether the purchase falls within the replacement of main residence exception in Schedule 4ZA.

In the scenario described, the buyer had a former main residence overseas and sold it before buying the new UK home. If that overseas property genuinely was the buyer’s only or main residence, and the new UK purchase is intended to become the new only or main residence, that usually points towards replacement treatment. If so, the 3% higher rates should not apply merely because the buyer also owns a separate buy-to-let property.

That means the accountant’s view may be correct on the 3% point, depending on the full facts and timing.

The practical distinction is this:

• the 2% surcharge depends on the SDLT non-UK residence test and may well apply initially;
• the 3% surcharge depends on the additional dwelling rules, but may be switched off if the purchase is a replacement of the buyer’s only or main residence.

These are different tests serving different purposes.

Outcome

On these facts, the likely outcome is:

• the 2% non-UK resident SDLT surcharge is likely to apply on completion if the buyer has not yet met the SDLT 183-day test;
• that 2% may be reclaimable later if the buyer satisfies the statutory day-count test within the permitted period after completion; and
• the 3% higher rates may well not apply if the purchase is properly treated as a replacement of the buyer’s previous main residence that was sold before the new purchase, even though a buy-to-let flat is still owned.

Working in the UK and paying UK tax does not, on its own, decide SDLT residence for the 2% surcharge.

Practical Steps

A buyer in this position should check the following before completion:

• the exact completion date of the new purchase;
• the exact date the previous overseas main residence was sold;
• whether that overseas property was genuinely the buyer’s only or main residence;
• whether the new property will be occupied as the buyer’s only or main residence;
• how many days the buyer has spent in the UK for SDLT residence purposes in the relevant statutory period; and
• whether the SDLT return is being prepared on the basis that the purchase is a replacement of only or main residence.

It is also sensible to keep evidence of:

• the sale of the former home;
• occupation history of the former home and the new home;
• travel and presence in the UK for day-count purposes; and
• any later entitlement to reclaim the 2% surcharge.

If the 2% surcharge is paid initially, the buyer should review their position once the relevant 183-day threshold has been met and consider making a repayment claim within the applicable time limit.

Conclusion

A returning UK buyer may have to pay the 2% non-UK resident SDLT surcharge at completion if they have not yet met the SDLT 183-day test, even if they are already working and paying tax in the UK. But that does not necessarily mean the 3% higher rates also apply. If the new purchase replaces a previous main residence that has already been sold, the 3% surcharge may not be due at all despite ownership of a buy-to-let property.

Legal References Used

• Finance Act 2003, Schedule 4ZA
• Finance Act 2003, Schedule 9A
• HMRC guidance on repayment of the non-UK resident SDLT surcharge
• HMRC guidance on refunds of higher rates of SDLT for additional dwellings

This page was last updated on 22 March 2026.

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