How to claim multiple dwellings relief on your LTT return
Claiming MDR
Claim multiple dwellings relief in your Welsh LTT return using the correct code. A missed claim may be amended and refunded within 12 months of the original return’s filing date.
- Check whether the purchase qualifies.
- Find the original filing date.
- Do not assume a late claim is available.
Scroll down for the full analysis.
Read the original guidance here:
How to claim multiple dwellings relief on your LTT return
If you qualify for relief when buying more than one home at once, make the claim on your Land Transaction Tax return. This may reduce the Welsh stamp tax you pay.
If you missed the claim but it is otherwise valid, the official guidance says you may amend the return within the stated period and request a refund. Check the filing date.
What this rule is about
Multiple dwellings relief, often called MDR, applies to certain purchases involving two or more homes. This page explains how to make the claim. It does not decide whether your purchase qualifies.
What the official source says
The Welsh Revenue Authority’s guidance says that you claim MDR in your LTT return by using the correct relief code.
If you did not claim it the first time, you can amend the return, use the correct relief code and claim back extra tax paid. You must act within 12 months of filing. Act promptly.
- Claim MDR on the LTT return.
- Use the correct MDR code.
- Amend the return if you missed the claim.
- Ask for a refund of extra tax paid.
- Make the amendment within 12 months of the original return’s filing date.
What this means in practice
The deadline is the point to watch. It runs from the filing date, not from the day you notice the mistake.
After that 12-month period ends, the guidance does not say that a late MDR claim is available. This remains the case even if you identify the missing claim only afterwards. That is the stated limit.
- Find the original return first.
- Check its filing date.
- Check whether MDR was already claimed.
- Keep the details that support the claim.
How to analyse it
Consider two questions in order: did the purchase qualify for MDR, and was the claim made in time? Do not assume that purchasing several properties automatically answers the first question.
- Identify every home included in the purchase.
- Check whether the purchases were linked.
- Work out whether the MDR conditions are met.
- Check the original return’s filing date.
Example
In one transaction, Iwan buys two homes and submits an LTT return without MDR. Eight months later, he realises that the relief may apply.
The guidance says he can amend the original return, use the correct code and seek a refund, provided the claim is valid.
Why this can be difficult in practice
People often confuse the purchase date with the filing date. They may also concentrate on the refund and overlook whether the purchase qualifies. Both points matter.
- A missed code can mean MDR was not claimed.
- The filing date needs checking, not guessing.
- Two homes do not by themselves prove eligibility.
Key takeaways
- Claim MDR in your LTT return using the correct code.
- A missed claim may be corrected by amending the return.
- The guidance gives a 12-month deadline from the original filing date.
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 30 — multiple homes relief must be claimed on a return
- LTTA 2017 Schedule 13 para 3 — transactions that can qualify for multiple homes relief
- TCMA 2016 section 41 — time limit for amending a tax return
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 supplied source does not state the MDR return code, so this page does not reproduce one.
- The correct result still depends on whether the purchase meets the separate legal conditions for multiple dwellings relief.
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 copy of the original LTT return
- The filing date for that return
- Details showing why the purchase qualifies for MDR
- The amount of LTT paid on the original return
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 claim multiple dwellings relief on your LTT return [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 30 - multiple homes relief must be claimed on a return https://www.legislation.gov.uk/anaw/2017/1/section/30 - LTTA 2017 Schedule 13 para 3 - transactions that can qualify for multiple homes relief https://www.legislation.gov.uk/anaw/2017/1/schedule/13/paragraph/3 - TCMA 2016 section 41 - time limit for amending a tax return https://www.legislation.gov.uk/anaw/2016/6/section/41 Guidance page from the Welsh Revenue Authority on this topic (guidance, not law): https://www.gov.wales/land-transaction-tax-relief-multiple-dwellings-guide#72352 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 supplied source does not state the MDR return code, so this page does not reproduce one. - The correct result still depends on whether the purchase meets the separate legal conditions for multiple dwellings relief. 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 claim multiple dwellings relief on your LTT return
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