Replacing your main home: avoiding higher Land Transaction Tax rates
Replacing your main home
If you buy a new home before selling your old one, higher LTT rates may apply at first. The replacement exception can remove those rates or allow repayment later.
- The old property must have been your main home within the relevant three years.
- You must intend to make the new property your main home.
- The exception is not available to companies or mixed individual-and-company buyers.
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Read the original guidance here:
Replacing your main home: avoiding higher Land Transaction Tax rates

Replacing your main home and higher LTT rates
You may have to pay higher Land Transaction Tax (LTT) initially when you buy a new home before selling the old one.
LTT replaced stamp duty land tax in Wales in 2018.
However, the higher rates may not apply, or may later be repaid, where you are genuinely replacing the home you live in.
What this rule is about
Higher LTT rates can apply if you own another home at the end of the day when your new purchase takes effect. This often affects people moving house whose sale has not yet completed.
There is an exception for replacing your only or main home. Normal moves are not extra-home purchases.
Timing matters. Did you sell first, or buy first? That distinction can determine whether higher rates are payable on completion.
What the official source says
According to the Welsh Government, main LTT rates may apply if you sell your former main home and, within the allowed period, replace it with a new main home.
The normal period is three years before or three years after the purchase of the replacement home.
- Your old property must have been your only or main home at some point in the three years before the new purchase takes effect.
- You must make it your main home.
- A prior sale must meet replacement conditions.
- If you buy first and sell later, you normally pay the higher LTT rates at first.
- A qualifying sale may permit repayment.
- The exception is for an individual or individuals buying a home.
- It does not apply to a company or another non-individual buyer.
- It also does not apply where an individual buys jointly with a company or other non-individual buyer.
What this means in practice
Do not assume that briefly owning two homes permanently removes main-home treatment. A short overlap can arise during an ordinary move. The law allows this, but only where the conditions are met.
Higher LTT rates may be due when you buy your new home if the old one has not sold by that day. That may not be the final result.
- Keep the completion statement for the purchase of your new home.
- Keep the completion statement for the sale of your old home.
- Keep records that show where you lived before the move.
- Record why the new property was intended to be your main home.
- Check any spouse or civil partner interest.
- Do not treat a company purchase as a main-home replacement.
How to analyse it
Begin with the dates. Then consider each property’s use and ownership. What you call a property does not decide the issue. The central question is whether the old property really was your main home.
- Identify the day the new purchase took effect.
- Identify the day the old home was sold.
- Check whether the sale was within three years before or after the new purchase.
- Check that the old property was your only or main home within the relevant three years.
- Check that you intended the new property to become your only or main home.
- Check that neither you nor a spouse or civil partner still owned the old home after its sale.
- Check whether a company or other non-individual was a joint buyer.
- If the sale was late, consider whether the separate rules on relevant restrictions or fire safety defects might extend the period.
Example
Rhiannon buys a new house on 10 May 2025, intending to live there as her main home. Her old house was where she lived, but its sale completes on 10 April 2026.
She still owns the old house on the day she buys the new one. Higher LTT may therefore be paid at first.
Repayment may then be available. Every replacement condition must be met.
Why this can be difficult in practice
This rule concerns real life, not merely addresses on forms. A property may have been owned for years without being the home where you mainly lived. The facts can matter greatly.
People also overlook the difference between buying after a sale and selling after a purchase. The first route may allow the main rates from the start. The second can require higher rates first and a later repayment claim.
- Moving out before a sale does not, by itself, answer whether the old property was your main home.
- Living between two properties can make the main-home question harder.
- A spouse or civil partner’s ownership can affect the result.
- A delayed sale does not automatically qualify for a longer period.
- The source flags separate rules for delays caused by relevant restrictions or fire safety defects.
- Buying through a company, or with a company, prevents use of this exception.
Key takeaways
- A genuine house move can qualify for the main LTT rates.
- If you buy first, higher LTT may be paid before the old home is sold.
- You may be able to claim repayment after a qualifying sale within the allowed period.
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 24 — higher rates residential property transactions and tax bands
- LTTA 2017 Schedule 5 para 3 — when higher rates apply to one home purchase
- LTTA 2017 Schedule 5 para 8 — replacement exception for a single home purchase
- LTTA 2017 Schedule 5 para 15 — when higher rates apply to multiple home purchases
- LTTA 2017 Schedule 5 para 17 — replacement exception for multiple home purchases
- LTTA 2017 Schedule 5 para 20 — higher rates where the buyer is not an individual
- LTTA 2017 Schedule 5 para 22 — higher rates where any joint buyer is not individual
- LTTA 2017 Schedule 5 para 23 — repayment after a later sale of former home
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
- Whether a property was a person’s only or main residence depends on the facts of how it was used.
- The longer time periods are not automatic. Their detailed conditions are outside the scope of the source 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.
- Completion dates for the old-home sale and new-home purchase
- Evidence that the old property was used as your main home
- Evidence of your intention to live in the new property as your main home
- Documents showing that you and a spouse or civil partner no longer owned the old home after its sale
- Evidence of any relevant restriction or fire safety defect where a longer period is relied on
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 Replacing your main home: avoiding higher Land Transaction Tax rates [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 24 - higher rates residential property transactions and tax bands https://www.legislation.gov.uk/anaw/2017/1/section/24 - LTTA 2017 Schedule 5 para 3 - when higher rates apply to one home purchase https://www.legislation.gov.uk/anaw/2017/1/schedule/5/paragraph/3 - LTTA 2017 Schedule 5 para 8 - replacement exception for a single home purchase https://www.legislation.gov.uk/anaw/2017/1/schedule/5/paragraph/8 - LTTA 2017 Schedule 5 para 15 - when higher rates apply to multiple home purchases https://www.legislation.gov.uk/anaw/2017/1/schedule/5/paragraph/15 - LTTA 2017 Schedule 5 para 17 - replacement exception for multiple home purchases https://www.legislation.gov.uk/anaw/2017/1/schedule/5/paragraph/17 - LTTA 2017 Schedule 5 para 20 - higher rates where the buyer is not an individual https://www.legislation.gov.uk/anaw/2017/1/schedule/5/paragraph/20 - LTTA 2017 Schedule 5 para 22 - higher rates where any joint buyer is not individual https://www.legislation.gov.uk/anaw/2017/1/schedule/5/paragraph/22 - LTTA 2017 Schedule 5 para 23 - repayment after a later sale of former home https://www.legislation.gov.uk/anaw/2017/1/schedule/5/paragraph/23 Guidance page from the Welsh Revenue Authority on this topic (guidance, not law): https://www.gov.wales/higher-rates-purchases-residential-property-technical-guidance#5225 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 - Whether a property was a person's only or main residence depends on the facts of how it was used. - The longer time periods are not automatic. Their detailed conditions are outside the scope of the source 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 4 September 2026
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