How to split the price of land in Wales and England for LTT
The short answer
When land crosses the Wales–England border, the full price must be split fairly between the two parts. LTT applies to the Welsh share.
- Use relative value, not simply acreage.
- Keep evidence for the split.
- Do not rely on an artificial contract allocation.
Scroll down for the full analysis.
Read the original guidance here:
How to split the price of land in Wales and England for LTT
If the land you buy crosses the Wales–England border, even where one contract covers a single property, Land Transaction Tax, or LTT, applies only to the Welsh part. It is not one Welsh transaction. Divide fairly between Wales and England.
What this rule is about
A border-crossing property may be one home, farm or plot, sold under one contract for one price. Tax law nevertheless separates it into two parts. One part is for Wales and one is for England.
The distinction may sound technical. It can affect the tax calculation.
The law requires the price to be divided on a “just and reasonable” basis. In everyday terms, the split must make sense when you consider what each part of the land is actually worth.
What the official source says
Section 9 of the Welsh LTT law treats a purchase of land in both countries as two transactions. It requires a just and reasonable division of the amount paid between them. The Welsh Revenue Authority, or WRA, explains how it expects that approach to work.
- Work out which land lies in Wales and which lies in England.
- Treat the Welsh land as the part to which LTT can apply.
- Divide the full purchase price between the two parts fairly.
- Base the split on the relative value of the land in each country.
- Use the real facts of the property, not a rough estimate.
- Do not rely on a contract clause if it does not match those facts.
Where you have a sound factual basis and can show how the evidence supports the allocation, the WRA says that you may do the valuation yourself. Guesswork is not enough. You may instead use an independent person qualified to value property.
The WRA points to Valuation Office Agency guidance for useful valuation ideas. That material was written for capital gains tax, not LTT. It is guidance, not law, but the WRA says its approach is helpful here.
What this means in practice
Although two areas may be the same size, differences in buildings, location, condition, present use and reasonable potential use can make their values markedly different. Start with value, not area.
For example, a large field may be worth less than a small area containing a house, barn or other useful building. The location and condition of a building can matter too. So can what the building is used for, or could reasonably be used for.
- A simple area split may work for bare land with similar value on both sides.
- A building on the Welsh side may mean more of the price belongs there.
- A building that crosses the border needs careful thought.
- Land with different uses may have different values, even if it looks similar on a plan.
- A written price split is evidence, but it does not settle the issue by itself.
This is where people can go wrong. A convenient figure is not necessarily a fair figure.
How to analyse it
Ask one basic question: if the Welsh and English parts were valued separately, how would the total price reasonably be shared between them? A clear answer should come from evidence, not from the tax result someone wants.
- Check the title plan and identify the border accurately.
- List the land, buildings and other features on each side.
- Consider the condition and use of every building.
- Consider whether either part has a special feature that adds value.
- Compare the relative values, rather than only the acreage.
- Keep the valuation evidence and the reasoning behind the figures.
- Check whether the split in the contract reflects that evidence.
Unusual land may need stronger support. A suitably qualified independent valuation may provide it. The official source does not say that one is compulsory. It does say the taxpayer must make a fair split based on the facts.
Example
Illustration: Asha buys a house and land for £600,000. The house and most of the useful land are in Wales. A separate field over the border is in England. Evidence supports values of £500,000 for the Welsh part and £100,000 for the English field. A £500,000 Welsh share may be just and reasonable because it reflects the relative values.
Now change one fact: the English field contains a valuable building. Area alone may be unfair. The value of that building must be considered before deciding the split.
Why this can be difficult in practice
Maps show where the border is, but they do not show value, and land on either side may differ greatly in quality, access, use or development potential. Values can differ sharply.
You might think that a contract can simply assign most of the price to one country. It cannot override the need for a fair division based on the real facts.
- Equal acreage does not always mean equal value.
- A small part of a property can hold most of its value.
- The condition of a building can change the result.
- Possible uses of a building can matter as well as its present use.
- A border running through a building makes the exercise more complex.
- A valuation should explain its reasoning, not just state a percentage.
The WRA guidance also says the same broad principles are relevant to cross-border SDLT cases. SDLT is the English stamp duty system, with its own legislation. This page is about the Welsh LTT treatment.
Key takeaways
- Cross-border land is split into Welsh and English transactions for LTT.
- Divide the total price by relative value, not by guesswork.
- Buildings and their use can matter more than land area.
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
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
- What is just and reasonable depends on the particular land, buildings and evidence of value.
- The supplied statutory material does not record its currency date, so the current text of the legislation should be checked for a transaction taking place now.
- The WRA source says the same principles are relevant to SDLT, but SDLT is separate English legislation and is not analysed on this page.
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.
- A plan showing the Wales–England border and the land on each side
- The contract, transfer and any price-allocation clause
- Details of each building, its condition and its actual or possible use
- Valuation evidence explaining how the split was reached
- Comparable sales or other evidence supporting relative values
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 How to split the price of land in Wales and England for LTT [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 Guidance page from the Welsh Revenue Authority on this topic (guidance, not law): https://www.gov.wales/cross-border-and-cross-title-transactions-technical-guidance#5656 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 - What is just and reasonable depends on the particular land, buildings and evidence of value. - The supplied statutory material does not record its currency date, so the current text of the legislation should be checked for a transaction taking place now. - The WRA source says the same principles are relevant to SDLT, but SDLT is separate English legislation and is not analysed on this page. 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: How to split the price of land in Wales and England for LTT
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