Do higher SDLT rates apply when a married buyer replaces their main home but their spouse owns a property abroad?

Introduction

This is a common Stamp Duty Land Tax (SDLT) question where one spouse is buying a new home in their sole name, but the other spouse already owns another dwelling, including one outside the UK. Many people correctly notice the special spouse rules in the higher rates legislation and worry that the purchase will be treated as an additional property purchase.

The key point is that the spouse rule is not the end of the analysis. If the buyer is genuinely replacing their only or main residence, the higher rates may still be switched off. In a straightforward replacement-of-main-residence case, the standard residential SDLT rates can apply even where the spouse owns another property elsewhere.

The Question

An elderly homeowner sold their previous main residence and is buying a flat in England in their sole name to live in as their new main residence. The buyer is married and living with their spouse. The spouse owns a separate property overseas in their sole name, and the buyer has no legal or beneficial interest in that overseas property.

The concern is whether the spouse’s overseas property causes the English purchase to be treated as an additional dwelling for SDLT purposes, even though the buyer has sold their former main home and is moving into the new property as their main residence.

Nick’s Explanation

Nick’s reasoning was that the spouse rule in Schedule 4ZA to the Finance Act 2003 does matter, but it does not override the replacement of only or main residence exception.

In anonymised form, his explanation was:

“Because the purchaser is married and living with their spouse, the purchaser is treated for higher rates purposes as if they also had the spouse’s dwelling interests. That would normally bring the overseas property into account. However, where the purchaser has disposed of their previous only or main residence and is buying a new dwelling to be their only or main residence, paragraph 3(6) can disapply the higher rates.”

He therefore concluded that the purchase should be charged at the standard residential SDLT rates rather than the higher rates.

The Law

The higher rates of SDLT are contained in Schedule 4ZA to the Finance Act 2003.

Two parts of Schedule 4ZA are especially important here.

First, paragraph 9 contains the spouse and civil partner rule. Broadly, if at the effective date of the transaction the purchaser is married or in a civil partnership and living together with their spouse or civil partner, the purchaser is treated as if they were also a joint purchaser of any dwelling of which the spouse or civil partner is a purchaser. In practical terms, that means a spouse’s property interests can be attributed to the buyer for higher rates purposes.

Secondly, paragraph 3(6) provides the replacement of only or main residence exception. Broadly, the higher rates do not apply if, at the effective date of the transaction, the purchaser is replacing the purchaser’s only or main residence.

For this exception to work, the factual pattern usually needs to show that:

• the buyer disposed of a dwelling that was their only or main residence; and
• the newly purchased dwelling is intended to be the buyer’s new only or main residence.

For higher rates purposes, overseas dwellings can count as dwellings just as UK dwellings can. So the fact that the spouse’s property is abroad does not stop paragraph 9 from applying. But it also does not prevent paragraph 3(6) from applying if the buyer is replacing their main home.

Analysis

Step 1: Does the spouse rule apply?

Yes. If the buyer is married and living together with their spouse on the effective date, paragraph 9 is engaged. That means the buyer is treated as also having the spouse’s dwelling interests. So the spouse’s overseas property is relevant.

Step 2: Would that normally point towards higher rates?

Yes. Without any relieving provision, a buyer who is treated as having an interest in another dwelling will often fall within the higher rates rules when buying a further dwelling.

Step 3: Is this a replacement of only or main residence?

On the stated facts, yes. The buyer has sold the previous home that was used as their main residence and is buying a new flat to live in as their new main residence. That is the classic pattern for paragraph 3(6).

Step 4: Does the spouse’s ownership of another property defeat the replacement exception?

No, not on these facts. The spouse rule attributes the spouse’s property interests to the buyer for the purpose of testing the higher rates rules, but the replacement-of-main-residence exception can still apply. If the buyer has genuinely disposed of their previous only or main residence and is replacing it with another only or main residence, paragraph 3(6) can switch off the higher rates.

Step 5: Does it matter that the spouse’s property is overseas and occasionally used by the couple?

Not usually, so long as the property that was sold was in fact the buyer’s only or main residence and the new property is intended to become the buyer’s only or main residence. Occasional visits to another property do not automatically make that other property the buyer’s main residence. The question is one of fact and degree, but on the scenario given the sold property was treated as the main home and the new purchase is intended to replace it.

Step 6: What SDLT rates apply?

On the facts described, the purchase falls to be taxed at the standard residential SDLT rates, not the higher rates for additional dwellings.

On a purchase price of £205,000, the standard calculation stated in Nick’s explanation was:

• 0% on the first £125,000 = £0
• 2% on the next £80,000 = £1,600

Total SDLT: £1,600.

If the higher rates had applied, the SDLT would have been substantially higher.

This issue is separate from the “not suitable for use” or uninhabitable dwelling line of cases. Where readers are considering whether a property falls outside the normal dwelling rules because of its condition, the threshold is now relatively high following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799. That authority does not alter the replacement-of-main-residence analysis here, but it is relevant in condition-based SDLT arguments more generally.

Outcome

Where a married buyer sells their previous main residence and buys a new property to live in as their new main residence, the higher SDLT rates should not apply merely because their spouse owns another property, including one abroad, provided the statutory replacement conditions are met.

On the scenario described, the practical conclusion is that the purchase should be taxed at the standard residential SDLT rates.

Practical Steps

To assess whether the replacement exception applies, a buyer should check the following:

• Was the previous property actually the buyer’s only or main residence as a matter of fact?
• Has that previous main residence been sold or otherwise disposed of?
• Is the new property being bought to serve as the buyer’s new only or main residence?
• Were the buyer and spouse living together at the effective date, so that paragraph 9 is relevant?
• Is there clear evidence of occupation history and intention, such as sale documents, completion statements, and the factual pattern of residence?

It is also sensible to ensure that the conveyancer’s SDLT return reflects the replacement-of-main-residence position correctly and that the file records why the higher rates do not apply.

Conclusion

A spouse’s separate ownership of an overseas property can bring the spouse rule into play, but it does not automatically mean higher SDLT is due. If the buyer has sold their former only or main residence and is buying a new one to replace it, Schedule 4ZA paragraph 3(6) can disapply the higher rates. On these facts, the standard residential SDLT rates should apply.

Legal References Used

• Finance Act 2003, Schedule 4ZA
• Finance Act 2003, Schedule 4ZA, paragraph 3(6)
• Finance Act 2003, Schedule 4ZA, paragraph 9
• 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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