LTT and SDLT enquiries: splitting a cross-border property price
Cross-border LTT and SDLT price splits
When land lies in Wales and England, the price must be divided fairly between the two parts. WRA guidance explains how an enquiry may test that division.
- Keep plans, calculations and valuation evidence.
- A changed split can affect both tax returns.
- Amend a return first where that remains possible.
Scroll down for the full analysis.
Read the original guidance here:
LTT and SDLT enquiries: splitting a cross-border property price
LTT and SDLT enquiries: splitting a cross-border property price
If one property deal includes land in Wales and England, you must split the price between the two parts. That split affects Land Transaction Tax (LTT) and stamp duty land tax (SDLT). An enquiry tests fair, evidenced splits.
What this rule is about
A farm, estate or other property can cross the Wales–England border. The law treats that single purchase as two separate purchases for land-tax purposes: one Welsh and one English.
You therefore cannot simply put the whole price on one return. You must give each part a fair share of the total amount paid. The legal phrase is a “just and reasonable apportionment”. In everyday terms, it means a fair way of dividing the price.
That sounds like an accounting detail. It can change the tax due in each country.
What the official source says
WRA’s technical guidance says that WRA, HMRC or Revenue Scotland may challenge a return using their usual enquiry, assessment or discovery powers. The authority that opens the enquiry will examine how the price was divided and the evidence behind it.
WRA says it will try to agree the split with the other tax authorities and with you. This is guidance about how the authorities expect to handle the process. It is not itself the law.
- Use a just, reasonable tax-area split.
- An enquiry can ask how you reached the figures on your returns.
- Missing evidence or an unreasonable split may lead the authority to ask the Valuation Office Agency for an apportionment.
- The guidance says all three tax authorities will accept the Valuation Office Agency’s decision if this happens.
- The agency may provide a non-negotiated figure or a figure agreed with you.
- If your split is accepted, the enquiry ends and no further action is needed.
What this means in practice
Start splitting when preparing the returns. Do not wait for questions. Keep a short written record of why the figures are fair. A bare percentage, with no working or valuation support, may be hard to defend later.
There is more than one possible outcome. The official guidance says an authority may decide not to pursue a small difference. But it may ask you to agree revised figures where the difference matters.
- Keep the sale contract, title plans and any plan showing the border.
- Record the size, use and value of each part of the land.
- Keep estate-agent advice, surveyor evidence or other valuation material.
- Make sure the Welsh and English figures add up to the full price.
- Keep letters that close the enquiry or record an agreed outcome.
If the price split changes, one return may show too little tax while the other shows too much. Sorting out the first return does not automatically correct the second one.
How to analyse it
Work through the facts in order. Do not begin by choosing the tax result you want. Begin with the land you actually bought and a sensible basis for valuing each part.
- Check whether the land bought lies partly in Wales and partly in England.
- Identify every plot, right and area included in the deal.
- Find the total amount paid under the contract.
- Choose a fair basis for dividing that amount between the two areas.
- Write down why that basis fits the land and the deal.
- Use evidence that supports the figures, especially where the values are not obvious.
- Compare the LTT and SDLT returns to ensure they use matching figures.
- If an enquiry changes one figure, check whether the other return needs an amendment or repayment claim.
What actually decides the answer? Not the label given to the land. It is the value and evidence that support the chosen division.
Example
Imagine Aled buys an estate for £800,000. The estate includes fields in Wales and fields across the border in England. He cannot pick £400,000 for each side merely because that is a neat split.
Instead, Aled gathers plans and valuation evidence. That evidence supports £520,000 for the Welsh land and £280,000 for the English land. His LTT return uses £520,000 and his SDLT return uses £280,000. Together, they equal the £800,000 paid.
Suppose WRA later asks why the Welsh figure was £520,000. Aled can show the plans, the valuation evidence and his calculation. That does not guarantee agreement, but it gives the enquiry a proper basis.
Why this can be difficult in practice
Land does not always divide neatly. One price may cover buildings, farmland, access rights and land on both sides of the border. A valuable feature on one side may affect the value of the whole deal.
You might think equal acreage means equal value. It does not. Land with access, buildings or development potential may be worth much more than a larger area elsewhere.
- A contract may state one total price without values for individual plots.
- Border plans may be unclear or use different descriptions from the title documents.
- Land may have a different use, condition or potential on each side of the border.
- A non-negotiated valuation may differ from the split you used.
- If agreement is not reached, the guidance says the enquiry can close using the valuation figure, while you retain review or appeal rights.
- If extra tax is due because the original split was not just and reasonable, the guidance says a penalty may be sought for an inaccurate return.
Once the tax position is final, the source says you may amend the return for the other area if that route is still open. If not, you may be able to make a repayment claim. You should include the letter closing the enquiry, recording an agreed settlement, or setting out the decision.
Where a return can still be amended, the guidance says you should amend it before making a repayment claim, and it warns that a repayment may be refused if you delayed claiming while that amendment route remained open. That is the trap.
For this type of delay, WRA and HMRC say they will treat a claim made within three months of the other authority closing its enquiry as made in an appropriate time frame. That is their published approach, rather than a new statutory deadline.
Key takeaways
- Split the full price fairly between the Welsh and English land.
- Keep evidence showing how and why you reached the figures.
- Check both returns if an enquiry changes the price split.
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 cross-border land between Welsh and English transactions
- TCMA 2016 section 63 — claims for overpaid land transaction tax
- TCMA 2016 section 67 — limits on claims where a return could be amended
- FA 2003 Schedule 10 para 34 — claims for repayment of overpaid stamp duty land tax
- FA 2003 Schedule 10 para 34A — limits on SDLT repayment claims and return amendments
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 land, the deal and the evidence available.
- The source does not set a numerical threshold for a material adjustment.
- The source does not explain the full statutory conditions or time limits for each amendment and repayment route.
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 plan showing every parcel of land bought
- A clear map of the Wales–England border where relevant
- The calculation used to split the total price
- Valuation evidence for the Welsh and English land
- Correspondence closing any enquiry or agreeing an appeal outcome
- Copies of the LTT and SDLT returns and any amendments
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 LTT and SDLT enquiries: splitting a cross-border property price [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 cross-border land between Welsh and English transactions https://www.legislation.gov.uk/anaw/2017/1/section/9 - TCMA 2016 section 63 - claims for overpaid land transaction tax https://www.legislation.gov.uk/anaw/2016/6/section/63 - TCMA 2016 section 67 - limits on claims where a return could be amended https://www.legislation.gov.uk/anaw/2016/6/section/67 - FA 2003 Schedule 10 para 34 - claims for repayment of overpaid stamp duty land tax https://www.legislation.gov.uk/ukpga/2003/14/schedule/10/paragraph/34/2025-11-17 - FA 2003 Schedule 10 para 34A - limits on SDLT repayment claims and return amendments https://www.legislation.gov.uk/ukpga/2003/14/schedule/10/paragraph/34A/2025-11-17 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#5661 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 land, the deal and the evidence available. - The source does not set a numerical threshold for a material adjustment. - The source does not explain the full statutory conditions or time limits for each amendment and repayment route. 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: LTT and SDLT enquiries: splitting a cross-border property price
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