Do separated spouses pay the higher SDLT rates when one buys the other out?

Introduction

A common Stamp Duty Land Tax question arises when a married couple separate but are not yet divorced, and one spouse takes over the former family home or buys another property. People often worry that, because they are still legally married, HMRC will treat them as owning two dwellings together and charge the higher rates for additional dwellings.

The answer depends on the exact facts. In some cases, the higher rates do not apply because of specific rules for transactions between spouses or civil partners. The key issues are whether the separation is likely to be permanent, whether the parties are still treated as living together for SDLT purposes, and whether one spouse has ceased to have an interest in the former matrimonial home.

The Question

The scenario can be stated in general terms like this: a married couple have separated, the separation is intended to be permanent, and one spouse is no longer on the title to the former marital home. That spouse is concerned that, because there is not yet a final divorce, a purchase or transfer involving residential property might still be caught by the higher SDLT rates for additional dwellings.

The point raised is whether the legislation and HMRC guidance on separated spouses mean that the higher rates should not apply in that situation.

Nick’s Explanation

Nick’s key point was that the solicitor had identified an important part of the SDLT legislation. In anonymised form, his view was:

“Assuming the separation is permanent and leading to divorce, and the buyer is no longer on the title deeds of the former marital home, then based on this legislation it makes sense that the higher rates of stamp duty would not apply.”

That reasoning reflects the fact that Schedule 4ZA to the Finance Act 2003 contains special rules dealing with spouses and civil partners, including cases where one party is both buyer and seller in the same overall arrangement. It also reflects HMRC’s manual guidance on when separated spouses are, or are not, treated as living together.

The Law

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

For married couples and civil partners, the legislation normally contains anti-avoidance style rules that can treat spouses living together as a single unit when considering whether a dwelling is an additional dwelling. In broad terms, if spouses are living together, property interests held by one can affect the SDLT position of the other.

However, the legislation also contains exceptions and special rules. The passage identified in the source material is paragraph 9A of Schedule 4ZA to the Finance Act 2003, which provides:

“A chargeable transaction is not a higher rates transaction for the purposes of paragraph 1 if—
(a) there is only one purchaser,
(b) there is only one vendor, and
(c) on the effective date of the transaction the two of them are—
(i) married to, or civil partners of, each other, and
(ii) living together (see paragraph 9(3)).”

It then goes on to deem a spouse who is both purchaser and vendor out of one side of the equation for the purpose of applying that rule.

HMRC’s guidance at SDLTM09820 discusses paragraph 9 and paragraph 9A of Schedule 4ZA FA 2003 and explains how the higher rates rules apply where a person purchases without their spouse or civil partner, including the importance of whether they are treated as living together.

Under paragraph 9(3), spouses or civil partners are treated as living together unless they are separated under a court order, separated by deed of separation, or separated in circumstances in which the separation is likely to be permanent.

Analysis

The position needs to be worked through carefully.

First, if spouses are still treated as living together for SDLT purposes, HMRC may aggregate their property interests when deciding whether the buyer already has a major interest in another dwelling. That can trigger the higher rates even if only one spouse is named on the purchase.

Secondly, if the spouses are no longer treated as living together because they are separated in circumstances likely to be permanent, that aggregation rule should stop applying. This can be very important where one spouse is trying to buy a home after leaving the former matrimonial home.

Thirdly, where the transaction is effectively between the spouses themselves, paragraph 9A may prevent the transaction from being a higher rates transaction, provided its conditions are met.

In practical terms, the following points matter:

• Is the separation genuinely likely to be permanent?
• Is there evidence of that, such as separate living arrangements, legal correspondence, financial separation, or divorce proceedings?
• Has the buyer already ceased to hold a legal interest in the former marital home?
• Is the transaction a transfer between spouses falling within paragraph 9A?

If the separation is permanent and one spouse is no longer on the title to the former marital home, that strongly supports the view that the higher rates should not apply in the way they otherwise might if the couple were still living together.

The fact that the parties are not yet divorced is not, by itself, decisive. For SDLT, the critical question is often not whether the marriage has legally ended, but whether they are still treated as living together under paragraph 9(3).

Where readers are considering whether a property was uninhabitable or not suitable for use as a dwelling at the effective date, the threshold is now relatively high following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799. That issue is separate from the spouse separation rules, but it is relevant because some buyers wrongly assume that any disrepair will take a property outside the residential SDLT rules or the higher rates rules. After Mudan, that argument is harder to sustain unless the condition is genuinely severe.

Outcome

If a married couple have separated permanently, and one spouse is no longer on the title to the former marital home, the higher SDLT rates may well not apply to that spouse’s transaction, even though the divorce is not yet final.

That is particularly so where:

• the separation is likely to be permanent for the purposes of paragraph 9(3) of Schedule 4ZA FA 2003; and
• the transaction falls within the special rule in paragraph 9A; or
• the buyer is no longer treated as owning another dwelling through a spouse who is no longer living with them.

On the facts described, the practical conclusion is that the buyer may have a strong argument that the additional dwelling supplement should not be charged.

Practical Steps

To assess the SDLT position properly, a reader should check the following:

• Obtain the exact Land Registry position for the former matrimonial home and confirm whether the buyer still has any legal or beneficial interest.
• Review whether the separation is evidenced as permanent, for example by separate residences, written agreement, legal correspondence, or divorce steps.
• Identify the exact nature of the transaction: transfer of equity, buyout, purchase of a new dwelling, or linked arrangements.
• Read HMRC guidance at SDLTM09820 alongside paragraph 9 and paragraph 9A of Schedule 4ZA FA 2003.
• Check the effective date of the transaction, because SDLT status is tested at that date.
• If any argument is being considered about the property being uninhabitable, measure it against the stricter approach confirmed in Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799.

Where the sums involved are significant, the SDLT return should match the legal analysis and the supporting evidence should be retained.

Conclusion

Being separated but not yet divorced does not automatically mean the higher SDLT rates apply. For SDLT, the real question is whether the spouses are still treated as living together and whether the transaction falls within the special statutory rules for spouses and civil partners. If the separation is likely to be permanent and the buyer no longer has an interest in the former marital home, the higher rates may not be due.

Legal References Used

• Finance Act 2003, Schedule 4ZA
• Finance Act 2003, Schedule 4ZA, paragraph 9
• Finance Act 2003, Schedule 4ZA, paragraph 9A
• HMRC Stamp Duty Land Tax Manual, SDLTM09820
• 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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