Stamp duty when buying two homes but only one meets the first test
Buying several homes at once
If exactly one home in a multi-home purchase meets the first tests, the higher SDLT rates may still apply.
- The one qualifying home must not replace your main home.
- You must own another qualifying home outside the purchase.
- Its value must be £40,000 or more.
Scroll down for the full analysis.
Read the original guidance here:
Stamp duty when buying two homes but only one meets the first test
Stamp duty when buying two homes but only one meets the first test
Buying several homes in one deal does not always avoid the higher stamp duty rate. If only one home passes the first set of tests, a second check may still bring the whole purchase into the higher rates.
What this rule is about
An individual may buy two or more homes in one transaction, yet exactly one may meet the initial tests that matter here. That is the situation this rule addresses.
You might assume that one qualifying home is not enough. It can be enough.
The law first asks whether at least two homes pass the tests in paragraph 5; if they do, the higher rates can apply under that route, but paragraph 6 catches some purchases where only one passes those initial tests.
That is a separate route.
What the official source says
HMRC’s manual says paragraph 6 applies where one, and only one, of the homes bought meets all three paragraph 5 conditions. The legislation sets out the full test.
- You must be an individual, not a company.
- The purchase must include ownership interests in two or more homes.
- Exactly one bought home must meet the three paragraph 5 conditions.
- That home must not be replacing the home you live in.
- At the end of the relevant tax day, you must own an interest in another home outside this purchase.
- That other home must be worth £40,000 or more.
- It must not be an interest that sits behind a lease with more than 21 years left.
The three initial paragraph 5 conditions are applied to each bought home.
Broadly, a fair share of the price must be at least £40,000, the lease position must pass the test, and the home must not be subsidiary to another bought home.
A subsidiary home is usually one within the grounds of, or the same building as, another bought home. The price split also matters. It is not enough simply to call a building a separate flat.
HMRC’s manual uses the words “over £40,000” for the other home. The legislation says £40,000 or more. The statutory wording is the one that matters.
What this means in practice
Think of this as a two-stage check. First, test every home included in the purchase. Then, if exactly one passes, look at what else you own when the tax position is tested.
The key fact is not just how many homes you buy. Your existing property interests can decide the result.
- A buy-to-let flat may matter if it meets the value and lease tests.
- A home bought alongside a main house may fail the first test because it is subsidiary.
- If the one qualifying home replaces your main home, paragraph 6 does not apply through this route.
- If you own no other qualifying home outside the deal, paragraph 6 does not apply through this route.
- A block of flats with long leases may leave no home meeting the needed lease test.
This is the point people often miss: when the tax position is tested, the other home must be one you own outside the current purchase, rather than one acquired as part of it.
The homes bought together do not fill that role.
How to analyse it
Work through the questions in order. Do not start with a label such as “annexe”, “flat” or “investment property”. The documents and the facts decide the answer.
- List every home included in the deal.
- Split the total price between them on a fair basis.
- Check which homes have at least £40,000 of the price allocated to them.
- Check whether any bought home is affected by a lease with more than 21 years left.
- Check whether any home is subsidiary to another home in the deal.
- Count the homes that pass all three initial tests.
- If the answer is exactly one, ask whether it replaces your main home.
- List homes you own outside the deal at the end of the relevant tax day.
- Check their value and lease position.
A separate statutory exception may also apply for some buyers who already held an interest in the relevant bought home, although it has its own conditions and should not be assumed.
Check it separately.
Example
George buys a house and a smaller flat in one deal. Once the price has been fairly apportioned and the lease checks completed, the house alone meets all three initial conditions, while the smaller flat does not.
Only the house qualifies.
George is not buying the house as a replacement for his main home. At the end of the relevant tax day, he still owns a let flat worth £120,000. On these facts, the paragraph 6 conditions are met and the purchase falls within the higher rates.
Change one fact and the result may change. If George did not own that separate flat, paragraph 6 would not apply on this basis.
Why this can be difficult in practice
The hard part is often deciding whether a smaller home is truly separate for these tests.
Garden flats, cottages and annexes can be subsidiary.
Price allocations also need care. They must be just and reasonable. An artificial split can change the answer on paper, but it does not change the legal test.
- Do not assume every flat in a block is a qualifying home for this rule.
- Do not ignore a home you let to tenants.
- Do not treat a value of exactly £40,000 as below the statutory threshold.
- Do not assume buying a new main home ends the question.
- Check what you owned at the end of the relevant tax day, not only before the deal began.
Key takeaways
- One qualifying home can still trigger the higher rates.
- Your other property interests may decide the result.
- The £40,000 statutory test includes a value of exactly £40,000.
Technical analysis
For advisers, and for anyone who wants to check the law behind this page. You do not need this section to understand the guidance above.
Legislation
- FA 2003 Schedule 4ZA para 1 — higher-rate SDLT bands for qualifying transactions
- FA 2003 Schedule 4ZA para 2 — how a transaction becomes a higher-rates transaction
- FA 2003 Schedule 4ZA para 3 — when a home replaces an only or main residence
- FA 2003 Schedule 4ZA para 5 — initial tests for buying two or more homes
- FA 2003 Schedule 4ZA para 6 — higher-rates test where only one home qualifies
- FA 2003 Schedule 4ZA para 7A — exception for certain prior interests in a main home
Official guidance
The pages below are HMRC’s guidance. Guidance is not law. It sets out how HMRC reads the legislation, and it is not binding on you, on a tribunal or on a court. Where guidance and the legislation differ, the legislation wins. HMRC can also change or withdraw guidance, and it may not cover your facts.
Where this is not settled
- Whether one home is subsidiary to another can depend on the layout of the property and a just and reasonable split of the price.
- Whether a home replaces your main home depends on the detailed statutory conditions and the facts.
Evidence you would need
This kind of case is decided on the facts of the individual property. These are the records that usually settle it, and the ones an adviser would ask you for.
- The contract and completion documents for the whole purchase
- A breakdown showing how the price is split between the homes
- Lease documents and the time left on each lease
- Evidence of every home the buyer owned on the relevant tax day
- Evidence about the buyer’s former and intended main home
Explore this with an AI
Readers often want to test their own situation. Copy the prompt below into ChatGPT, Claude or Gemini. It hands the model the actual legislation for this page rather than letting it answer from memory, and tells it to be explicit about what is uncertain. What comes back is information, not advice – check it against the links above.
I am researching UK Stamp Duty Land Tax (SDLT), which applies in England and Northern Ireland. MY QUESTION Stamp duty when buying two homes but only one meets the first test [Replace this with your own situation: what you are buying, the price, the dates, who the buyer is, and what you plan to do with the property.] THE LAW THIS TURNS ON - FA 2003 Schedule 4ZA para 1 - higher-rate SDLT bands for qualifying transactions https://www.legislation.gov.uk/ukpga/2003/14/schedule/4ZA/paragraph/1/2025-11-17 - FA 2003 Schedule 4ZA para 2 - how a transaction becomes a higher-rates transaction https://www.legislation.gov.uk/ukpga/2003/14/schedule/4ZA/paragraph/2/2025-11-17 - FA 2003 Schedule 4ZA para 3 - when a home replaces an only or main residence https://www.legislation.gov.uk/ukpga/2003/14/schedule/4ZA/paragraph/3/2025-11-17 - FA 2003 Schedule 4ZA para 5 - initial tests for buying two or more homes https://www.legislation.gov.uk/ukpga/2003/14/schedule/4ZA/paragraph/5/2025-11-17 - FA 2003 Schedule 4ZA para 6 - higher-rates test where only one home qualifies https://www.legislation.gov.uk/ukpga/2003/14/schedule/4ZA/paragraph/6/2025-11-17 - FA 2003 Schedule 4ZA para 7A - exception for certain prior interests in a main home https://www.legislation.gov.uk/ukpga/2003/14/schedule/4ZA/paragraph/7A/2025-11-17 HMRC's guidance page on this topic (guidance, not law): https://www.gov.uk/hmrc-internal-manuals/stamp-duty-land-tax-manual/sdltm09766a HOW I WANT YOU TO ANSWER 1. Work from the legislation above. Read it before answering. HMRC guidance is HMRC's view of the law, not the law, and does not bind a tribunal or a court. 2. Tell me what the rule actually requires, in plain English. 3. Tell me which facts decide the answer, and which facts would change it. 4. Tell me what evidence I would need to support the position. 5. Be explicit about anything unsettled or fact-sensitive. Do not guess. 6. Your training data has a cutoff and SDLT rates and reliefs change at fiscal events. Say so if you are not sure the law is current. POINTS ALREADY KNOWN TO BE UNCERTAIN ON THIS TOPIC - Whether one home is subsidiary to another can depend on the layout of the property and a just and reasonable split of the price. - Whether a home replaces your main home depends on the detailed statutory conditions and the facts. Do not give me a conclusion you cannot support from the provisions above.
Legislation links show Finance Act 2003 as it stood on 2025-11-17. The law may have changed since, and the rules that apply are those in force on the date of your transaction. The official guidance this page is based on is here.
This page was last updated on 31 August 2026
Useful article? You may find it helpful to read the original guidance here: Stamp duty when buying two homes but only one meets the first test
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