Do you lose First-Time Buyer Relief if your spouse already owns a share in another property?

Introduction

This is a common Stamp Duty Land Tax question. A buyer may never have owned a property themselves, but their spouse or civil partner already owns a share in another home. The buyer then wants to know whether they can still claim First-Time Buyer Relief, and whether the higher rates of SDLT apply.

The answer depends on who is buying, whether the couple are married or in a civil partnership and living together, and whether the purchase is being made jointly or in one name only. In many cases, the rules for married couples are stricter than people expect.

The Question

A buyer is purchasing a dwelling for £267,000. The buyer has never owned property anywhere in the world. However, the buyer’s spouse already owns a 25% share in a shared ownership property, and that existing property is in the spouse’s sole name only. The buyer is not on the title and not on the mortgage for that existing property.

The question is whether the new purchase qualifies for First-Time Buyer Relief, whether SDLT is payable, and if so how much.

Nick’s Explanation

Nick’s reasoning can be summarised in two parts.

First, if a married couple who are living together buy a property jointly, SDLT law treats them as a single purchaser for the higher rates rules. As Nick explained, this means that a residential property interest owned by either spouse is treated as owned by both for that purpose.

Secondly, First-Time Buyer Relief is only available if every purchaser is a first-time buyer. So if one joint buyer already owns, or has previously owned, a major interest in a dwelling anywhere in the world, the relief is not available on that joint purchase.

Applying those rules, Nick concluded that:

• if the purchase is made jointly with the spouse, First-Time Buyer Relief is not available;
• the higher rates of SDLT apply because, at the end of the day of completion, the married couple are treated as owning more than one residential property; and
• on a purchase price of £267,000, the SDLT would be £16,700 on the figures provided.

Nick also noted that if the buyer purchases in their sole name only, and they genuinely satisfy the first-time buyer conditions, the SDLT position can be different. On the facts given, a sole purchase at £267,000 could qualify for First-Time Buyer Relief, producing SDLT of £0.

The Law

The main legislation is in the Finance Act 2003.

The higher rates for additional dwellings are found in Schedule 4ZA. The key provisions here are:

• Schedule 4ZA, paragraph 3, which sets out when the higher rates apply;
• Schedule 4ZA, paragraph 9(1), which says that married couples or civil partners living together are treated as a single purchaser; and
• Schedule 4ZA, paragraph 9(2), which says that a residential property interest owned by either of them is treated as owned by both.

First-Time Buyer Relief is found in Schedule 6ZA. The important provisions are:

• paragraph 1, which sets out the basic conditions for the relief;
• paragraph 3, which provides that where there are two or more purchasers, each of them must be a first-time buyer; and
• paragraph 6, which defines a first-time buyer as an individual who has never acquired a major interest in a dwelling anywhere in the world and who is not, at the effective date, entitled to an interest in another dwelling.

These rules deal with two different issues:

• whether the higher rates apply; and
• whether First-Time Buyer Relief is available.

They often overlap, but they are not identical tests.

Analysis

Step 1: Identify who the purchasers are.

If the new property is being bought jointly by both spouses, both are purchasers for SDLT purposes. That matters immediately for First-Time Buyer Relief, because all joint purchasers must qualify.

Step 2: Check whether every purchaser is a first-time buyer.

The buyer has never owned property before. But the spouse already owns a 25% share in a shared ownership property. That existing share is enough to prevent the spouse from being a first-time buyer. It does not matter that the share is only 25%, and it does not matter that the existing property is in the spouse’s sole name.

As a result, a joint purchase cannot qualify for First-Time Buyer Relief because Schedule 6ZA, paragraph 3 requires every purchaser to be a first-time buyer.

Step 3: Check whether the higher rates apply.

For the higher rates, married couples living together are treated as a single purchaser under Schedule 4ZA, paragraph 9. So even if only one spouse owns the existing shared ownership interest, that interest is treated as owned by both for the purpose of the higher rates test.

If the couple buy the new property jointly, then at the end of the day of completion they are treated as owning:

• the new dwelling; and
• the spouse’s existing shared ownership interest.

That means they own more than one residential property interest at the end of the day. If they are not replacing their only or main residence within the meaning of the legislation, the higher rates apply.

Step 4: Calculate the SDLT on a joint purchase.

Using the figures provided and the rate structure referred to in Nick’s explanation:

• 0% on the first £125,000 = £0
• 2% on the next £125,000 = £2,500
• 5% on the remaining £17,000 = £850

Total standard SDLT = £3,350

Additional dwelling surcharge at 5% of £267,000 = £13,350

Total SDLT = £16,700

Step 5: Consider a sole purchase instead.

If the buyer alone purchases the property, and only that buyer is on the title and SDLT return, the position changes. On the facts given, that buyer has never owned a dwelling anywhere in the world and would meet the first-time buyer definition in Schedule 6ZA, paragraph 6.

Because the price is below the First-Time Buyer Relief threshold referred to in Nick’s explanation, the SDLT would be £0 on a sole purchase.

This difference arises because First-Time Buyer Relief looks at the actual purchaser or purchasers, whereas the higher rates rules contain special deeming provisions for married couples living together.

Outcome

If the property is bought jointly with a spouse who already owns a 25% share in another dwelling, First-Time Buyer Relief is not available. On the facts given, the higher rates of SDLT also apply, producing SDLT of £16,700 on a purchase price of £267,000.

If the property is bought in the buyer’s sole name only, and the buyer alone meets the first-time buyer conditions, the purchase may qualify for First-Time Buyer Relief and the SDLT may be £0.

Practical Steps

If you are comparing a joint purchase with a sole purchase, check the following carefully before exchange and completion:

• who will be named as purchaser in the contract and transfer;
• who will be on the legal title at HM Land Registry;
• who will be named on the SDLT return;
• whether any spouse or civil partner owns any existing residential interest anywhere in the world;
• whether any existing property is being sold so that the transaction could count as a replacement of a main residence; and
• whether the mortgage lender will allow the intended ownership structure.

You should also make sure the SDLT return matches the actual legal structure of the transaction. If a buyer intends to rely on First-Time Buyer Relief, the title documents, contract and SDLT filing all need to be consistent with that position.

If the facts are more complicated than this example, such as where there is a declaration of trust, gifted deposit, occupier’s consent, or a question over beneficial ownership, the SDLT analysis may need closer review.

Conclusion

A spouse’s existing share in another property can block First-Time Buyer Relief on a joint purchase and can also trigger the higher rates of SDLT. In the scenario considered here, a joint purchase would lead to SDLT of £16,700, while a genuine sole purchase by the first-time buyer could reduce the SDLT to £0.

Legal References Used

• Finance Act 2003, Schedule 4ZA
• Finance Act 2003, Schedule 4ZA, paragraph 3
• Finance Act 2003, Schedule 4ZA, paragraph 9(1)
• Finance Act 2003, Schedule 4ZA, paragraph 9(2)
• Finance Act 2003, Schedule 6ZA
• Finance Act 2003, Schedule 6ZA, paragraph 1
• Finance Act 2003, Schedule 6ZA, paragraph 3
• Finance Act 2003, Schedule 6ZA, paragraph 6

This page was last updated on 22 March 2026.

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