Buying homes in Wales and England: the 2018 LTT transition example
The short answer
One contract for homes in Wales and England can produce two separate land-tax calculations. The official example split three Manchester homes for SDLT and three Wrexham homes for LTT.
- Count the homes in each territorial part.
- Allocate the price fairly between Wales and England.
- Check current relief rules before relying on this 2018 example.
Scroll down for the full analysis.
Read the original guidance here:
Buying homes in Wales and England: the 2018 LTT transition example
Buying homes in Wales and England: the 2018 LTT transition example
A single deal can involve two land taxes when it includes homes on both sides of the Welsh border. An official 2018 example makes clear that the Welsh and English homes were kept separate for tax rather than pooled. Land Transaction Tax (LTT) replaced stamp duty land tax in Wales in 2018.
What this rule is about
This example concerns six new houses bought from one developer in one transaction on 1 August 2018. Three were in Manchester. Three were in Wrexham. Each house cost £250,000.
One contract might appear to require one tax calculation. It does not. Where land is partly in Wales and partly in England, the law treats the deal as two transactions: a Welsh part and an English part.
That split matters because LTT applies to the Welsh part. SDLT applies to the English part. Relief rules must then be considered separately for each part.
What the official source says
According to Welsh Government guidance, SDLT applied only to the three Manchester houses, although the one transaction also included three Wrexham houses that were subject to LTT. LTT applied to the three Wrexham houses.
- The Manchester homes totalled £750,000.
- For the SDLT multiple dwellings relief calculation, the total number of homes was three.
- For that SDLT calculation, the total price for the homes was £750,000.
- The guidance says multiple dwellings relief was available under LTT for the Wrexham homes.
- It says the LTT relief worked in a similar way to the SDLT relief.
Crucially, the guidance calculated SDLT relief without combining all six homes into one calculation. Those three Welsh homes were not part of the English calculation.
What this means in practice
Start with location. Before calculating relief, identify which homes are in Wales and which are in England. Then split the transaction and the price between those two parts on a just and reasonable basis.
For the Welsh part, Schedule 13 sets out the LTT relief for buying multiple homes. Broadly, it works by calculating tax using an average amount for the homes, then applying that result across the relevant homes.
- Do not assume every home in one contract belongs in one tax calculation.
- Keep a clear price breakdown for the Welsh and English homes.
- Consider relief separately under the tax that applies to each part.
- Do not use an SDLT result as though it decides the LTT result.
Another detail is important. LTT normally treats six or more homes in one transaction as non-residential property. Here, however, the Welsh transaction contained three homes after the cross-border split. English homes were not added to the Welsh count.
How to analyse it
Consider the facts in this order. Although the contract may describe the purchase as one deal, the land tax result can still be divided.
- List every property included in the deal.
- Identify whether each property is in Wales or England.
- Split the deal into its Welsh and English parts.
- Allocate the total price between those parts fairly.
- Count the homes in each part, not simply across the whole contract.
- Apply the relevant LTT or SDLT rules to that part.
- Check whether multiple dwellings relief was available on the effective date.
Where your solicitor says that six homes automatically produce one result, check this point carefully. A cross-border deal can change the count.
Example
In the official example, a buyer paid £250,000 for each of six new houses. Three Manchester houses cost £750,000 in total. Those three homes formed the SDLT part. If multiple dwellings relief was claimed for that part, the guidance says the relevant total was £750,000 and the number of homes was three.
Three other houses were in Wrexham. They formed the Welsh part and were subject to LTT. The guidance says that multiple dwellings relief was available for that part under the LTT rules. No final LTT figure appears in the guidance, so this example should not be used to calculate present-day tax.
Why this can be difficult in practice
Arithmetic is often not the difficult part. Instead, the main challenge is deciding what enters each tax calculation when a single contract covers several sites or plots.
- A single developer and one contract do not prevent the tax split.
- The total number of homes in the whole deal may not be the relevant number for LTT.
- The price allocated to each side of the border must be just and reasonable.
- Historic transition rules can continue to affect an older SDLT relief claim.
- A later change of circumstances may still matter for an SDLT claim made before 1 April 2018.
One final point is easy to miss. Welsh Government guidance says that, where an SDLT transaction had an effective date before 1 April 2018 and included homes in Wales, the SDLT adjustment rule continued to apply. That remained so even if the later event happened on or after 1 April 2018.
In short, moving to LTT did not remove the later-adjustment rules from an earlier qualifying SDLT relief claim.
Key takeaways
- A cross-border property deal is split between Welsh and English tax rules.
- In the official example, SDLT applied to three Manchester homes and LTT to three Wrexham homes.
- This historic example cannot safely be used as a current relief or rate calculation.
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 9 — splitting a cross-border purchase into Welsh and English parts
- LTTA 2017 section 72 — six or more homes treated as non-residential property
- LTTA 2017 Schedule 13 para 3 — when multiple dwellings relief can apply
- LTTA 2017 Schedule 13 para 4 — amounts allocated to homes for relief
- LTTA 2017 Schedule 13 para 5 — how the relief changes the tax calculation
- LTTA 2017 Schedule 13 para 6 — calculating tax by averaging the home prices
- FA 2003 Schedule 6B para 6 — later changes affecting SDLT multiple dwellings relief
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.
- Welsh Government, Transitional guidance on the introduction of Land Transaction Tax, section 12.2 example
Where this is not settled
- The official example does not explain every fact needed to calculate the final LTT due on the Wrexham houses.
- Multiple dwellings relief rules have changed since this historic example. Current relief availability and calculation need checking against the law in force for the relevant purchase date.
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 showing the homes bought and their location.
- A just and reasonable split of the total price between the Welsh and English parts.
- Documents showing the effective date of any earlier SDLT transaction and any later event that changed its facts.
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 Buying homes in Wales and England: the 2018 LTT transition example [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 9 - splitting a cross-border purchase into Welsh and English parts https://www.legislation.gov.uk/anaw/2017/1/section/9 - LTTA 2017 section 72 - six or more homes treated as non-residential property https://www.legislation.gov.uk/anaw/2017/1/section/72 - LTTA 2017 Schedule 13 para 3 - when multiple dwellings relief can apply https://www.legislation.gov.uk/anaw/2017/1/schedule/13/paragraph/3 - LTTA 2017 Schedule 13 para 4 - amounts allocated to homes for relief https://www.legislation.gov.uk/anaw/2017/1/schedule/13/paragraph/4 - LTTA 2017 Schedule 13 para 5 - how the relief changes the tax calculation https://www.legislation.gov.uk/anaw/2017/1/schedule/13/paragraph/5 - LTTA 2017 Schedule 13 para 6 - calculating tax by averaging the home prices https://www.legislation.gov.uk/anaw/2017/1/schedule/13/paragraph/6 - FA 2003 Schedule 6B para 6 - later changes affecting SDLT multiple dwellings relief https://www.legislation.gov.uk/ukpga/2003/14/schedule/6B/paragraph/6/2025-11-17 Guidance page from the Welsh Revenue Authority on this topic (guidance, not law): https://www.gov.wales/transitional-guidance-introduction-of-land-transaction-tax 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 official example does not explain every fact needed to calculate the final LTT due on the Wrexham houses. - Multiple dwellings relief rules have changed since this historic example. Current relief availability and calculation need checking against the law in force for the relevant purchase date. 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 4 September 2026
Useful article? You may find it helpful to read the original guidance here: Buying homes in Wales and England: the 2018 LTT transition example
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