Land Transaction Tax multiple dwellings relief requires separate tax on homes and land
Mixed purchases and multiple dwellings relief
When you buy two or more homes with land or other property, LTT is worked out in separate parts.
- Split the price on a just and reasonable basis.
- Calculate the homes part under the relief rules.
- Add the tax related to the remaining part.
Scroll down for the full analysis.
Read the original guidance here:
Land Transaction Tax multiple dwellings relief requires separate tax on homes and land
Land Transaction Tax multiple dwellings relief requires separate tax on homes and land
If you buy two or more homes in Wales with land, a shop, or another property, multiple dwellings relief can still apply. But it does not cover every pound you pay. Land Transaction Tax, Wales’s version of stamp duty, must be worked out in two parts.
What this rule is about
A single purchase can include homes and something else. That might be a house and a field, flats above a commercial unit, or homes with other residential property that is not itself a separate home.
The law separates the price paid for the homes from the rest. The relief applies only to homes. The other part has its own tax.
Never apply relief to every pound.
What the official source says
When a qualifying purchase includes homes and other property, the Welsh Revenue Authority says you can claim multiple dwellings relief, but you must first split the amount paid between the homes and the remaining property on a just and reasonable basis. That split comes first.
- Work out the tax connected with the homes under the multiple dwellings relief rules.
- Work out the tax connected with the remaining part of the price.
- Add those two figures together to reach the LTT due.
- Where higher residential rates apply to the homes calculation, use those rates for that part.
- The main residential rates are used for other residential property that is not a separate home.
The statute gives a formula for the remaining part. Take the tax that would have been due on the relevant purchase without this relief. Then multiply it by this fraction: RC ÷ (TDC + TRC).
- RC means the remaining price for the purchase in question.
- TDC means the total price assigned to the homes.
- TRC means the total remaining price.
- For one unlinked purchase, TRC is simply that purchase’s remaining price.
The fraction isolates the non-home share.
What this means in practice
You need separate LTT figures. The relief calculation for the homes is one figure. The amount linked to the rest of the purchase is another.
This can make a mixed purchase harder to price before completion. A small change to the split can change the final tax bill.
- Identify each home included in the deal.
- Identify all land and property that is outside those homes.
- Keep a record of how you split the price.
- Check whether the purchase is part of a wider linked arrangement.
Although the Welsh Revenue Authority provides an online multiple dwellings relief calculator, it is only a useful aid because the legal result continues to depend on the facts and the statutory calculation. The calculator is not decisive.
How to analyse it
Start with the property, not the formula. What are you actually buying, and what part of the agreed price belongs to each part?
- Check that the purchase falls within the relief rules for two or more homes.
- List any land, business premises, or other property included in the same deal.
- Make a just and reasonable split of the amount paid.
- Calculate the homes part using the multiple dwellings relief rules.
- Calculate the tax otherwise due on the whole relevant purchase.
- Apply RC ÷ (TDC + TRC) to that tax figure.
- Add the resulting amount to the homes part.
Are there linked purchases? If so, this is the part people miss. The total remaining price is not limited to one contract. It uses the total price across the linked purchases, less the total assigned to the homes.
Example
Here is an illustration of the remaining-price formula only. A buyer pays £1,000,000 for two homes and extra land. A reasonable split assigns £800,000 to the homes and £200,000 to the land. Where tax otherwise due on the purchase is £60,000, calculate the remaining part as £60,000 × £200,000 ÷ (£800,000 + £200,000). That gives £12,000. The £12,000 is then added to the separate relief calculation for the homes.
Why this can be difficult in practice
The difficult issue is usually the split, not the division. The law requires a just and reasonable apportionment. It does not provide a fixed percentage for gardens, fields, commercial space, or other property.
You might think the price stated for one part of a contract settles it. It may help, but the split still needs to be just and reasonable in the circumstances.
- Land may add value to a home while also having a separate value.
- One building can contain both homes and commercial space.
- Property described as residential may not be a separate home for this relief.
- Several contracts may be linked even where they complete at different times.
Good evidence supports a reasonable split. Valuations, plans, sales particulars, and the contract terms can explain why that split is reasonable.
Key takeaways
- Multiple dwellings relief can apply to homes bought with other property.
- Split the price fairly between the homes and everything else.
- Use the statutory fraction to find tax for the remaining part.
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
- LTTA 2017 section 8 — when land purchases count as linked transactions
- LTTA 2017 section 27 — calculating tax on a purchase that is not linked
- LTTA 2017 section 28 — calculating tax where purchases are linked
- LTTA 2017 Schedule 13 para 3 — purchases that can qualify for multiple dwellings relief
- LTTA 2017 Schedule 13 para 4 — splitting the price between homes and other property
- LTTA 2017 Schedule 13 para 5 — adding the two parts of the relief calculation
- LTTA 2017 Schedule 13 para 6 — using higher residential rates for the homes calculation
- LTTA 2017 Schedule 13 para 7 — calculating tax for the remaining part of the price
Official guidance
The pages below are the Welsh Revenue Authority’s guidance. Guidance is not law. It sets out how the Welsh Revenue Authority 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. the Welsh Revenue Authority can also change or withdraw guidance, and it may not cover your facts.
Where this is not settled
- The law does not prescribe one numerical method for a just and reasonable split of the price. What is reasonable depends on the property and evidence.
- Whether purchases are linked can depend on the full arrangement between the buyer and seller, including connected persons.
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 statements for every part of the purchase
- A clear valuation or other basis for splitting the price
- Details of any other purchases from the same seller or connected parties
- Facts showing which parts are homes and which are other property
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 Land Transaction Tax (LTT), the tax on property in Wales. It replaced Stamp Duty Land Tax in Wales on 1 April 2018, and SDLT does not apply in Wales. MY QUESTION Multiple dwellings relief: tax on land and other property [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 - LTTA 2017 section 8 - when land purchases count as linked transactions https://www.legislation.gov.uk/anaw/2017/1/section/8 - LTTA 2017 section 27 - calculating tax on a purchase that is not linked https://www.legislation.gov.uk/anaw/2017/1/section/27 - LTTA 2017 section 28 - calculating tax where purchases are linked https://www.legislation.gov.uk/anaw/2017/1/section/28 - LTTA 2017 Schedule 13 para 3 - purchases that can qualify for multiple dwellings relief https://www.legislation.gov.uk/anaw/2017/1/schedule/13/paragraph/3 - LTTA 2017 Schedule 13 para 4 - splitting the price between homes and other property https://www.legislation.gov.uk/anaw/2017/1/schedule/13/paragraph/4 - LTTA 2017 Schedule 13 para 5 - adding the two parts of the relief calculation https://www.legislation.gov.uk/anaw/2017/1/schedule/13/paragraph/5 - LTTA 2017 Schedule 13 para 6 - using higher residential rates for the homes calculation https://www.legislation.gov.uk/anaw/2017/1/schedule/13/paragraph/6 - LTTA 2017 Schedule 13 para 7 - calculating tax for the remaining part of the price https://www.legislation.gov.uk/anaw/2017/1/schedule/13/paragraph/7 Guidance page from the Welsh Revenue Authority on this topic (guidance, not law): https://www.gov.wales/land-transaction-tax-relief-acquisitions-involving-multiple-dwellings-technical-guidance#7280 HOW I WANT YOU TO ANSWER 1. Work from the legislation above. Read it before answering. Guidance from the Welsh Revenue Authority is its 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 - The law does not prescribe one numerical method for a just and reasonable split of the price. What is reasonable depends on the property and evidence. - Whether purchases are linked can depend on the full arrangement between the buyer and seller, including connected persons. Do not give me a conclusion you cannot support from the provisions above.
Legislation links show the Land Transaction Tax and Anti-avoidance of Devolved Taxes (Wales) Act 2017 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 3 September 2026
Useful article? You may find it helpful to read the original guidance here: Land Transaction Tax multiple dwellings relief requires separate tax on homes and land
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