Shared ownership staircasing: LTT relief after an SDLT lease
Shared ownership staircasing and LTT
Transitional guidance covers later staircasing where the original shared ownership lease was subject to SDLT.
- No market value election must have been made.
- Your share after the purchase must not exceed 80%.
- A non-notifiable purchase needs no LTT return or claim.
Scroll down for the full analysis.
Read the original guidance here:
Shared ownership staircasing: LTT relief after an SDLT lease
Shared ownership staircasing: LTT relief after an SDLT lease
If your shared ownership lease began under SDLT, the stamp duty system in England, a later purchase of a bigger share may get Welsh LTT relief. Usually, ownership must stay at 80%.
What this rule is about
Staircasing means buying a larger share in your shared ownership home, and this guidance addresses the cross-border timing issue that can arise when the first lease was an SDLT transaction but the later purchase falls under Welsh land transaction tax. The timing matters.
What the official source says
The Welsh Government’s transitional guidance says LTT relief is available for a later staircasing purchase when the circumstances below apply. Check each condition.
- Your original shared ownership lease was an SDLT transaction.
- You did not make a market value election.
- You are buying a further share under that lease.
- Your total share immediately afterwards is no more than 80%.
What this means in practice
When those facts apply and the staircasing purchase needs an LTT return, you must claim relief; if it does not need a return, you have no separate return or claim to make. That is the split.
- Check the original SDLT paperwork before completion.
- Work out the percentage you will own after staircasing.
- Check whether the purchase is notifiable to the Welsh Revenue Authority.
How to analyse it
Start with the old lease rather than just the new payment, because that is the part people can miss. Start there first.
- Was the first lease dealt with under SDLT?
- Was a market value election made then?
- Is the new purchase a qualifying staircasing step?
- Will your share stay at 80% or below?
- Is the transaction notifiable, including any linked deals?
Example
Ruth owns 60% of her home under a lease first dealt with under SDLT, and she buys another 20%. No market value election was made.
She owns 80% afterwards, so the guidance says the LTT purchase can receive relief; if the increased share costs less than £40,000 and no linked deal changes that result, no return or claim is needed. That ends the process.
Why this can be difficult in practice
You might assume the new payment alone decides the answer, but the first lease, any election and the ownership percentage after completion all matter. It does not.
- An election may be recorded in an old SDLT return.
- A share above 80% changes the result.
- Linked transactions can affect the £40,000 notification point.
Key takeaways
- Check the original SDLT lease documents.
- The 80% limit is measured after staircasing.
- No return means no separate relief claim.
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 Schedule 15 para 6 — relief for qualifying shared ownership staircasing purchases
- LTTA 2017 section 30 — when a land tax relief claim must be made
- LTTA 2017 section 44 — duty to submit a return for notified transactions
- LTTA 2017 section 45 — which land transactions must be notified to WRA
- LTTA 2017 section 46 — low-value major interest purchases excluded from notification
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 explain how to decide whether an SDLT market value election was made. The original SDLT return and lease papers may be needed.
- The statutory materials supplied record amendments up to 26 November 2024. Later changes have not been checked.
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 original shared ownership lease
- The original SDLT return and any market value election
- The staircasing documents and completion date
- The percentage owned before and immediately after staircasing
- Details of any linked property transactions
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 Shared ownership staircasing: LTT relief after an SDLT lease [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 Schedule 15 para 6 - relief for qualifying shared ownership staircasing purchases https://www.legislation.gov.uk/anaw/2017/1/schedule/15/paragraph/6 - LTTA 2017 section 30 - when a land tax relief claim must be made https://www.legislation.gov.uk/anaw/2017/1/section/30 - LTTA 2017 section 44 - duty to submit a return for notified transactions https://www.legislation.gov.uk/anaw/2017/1/section/44 - LTTA 2017 section 45 - which land transactions must be notified to WRA https://www.legislation.gov.uk/anaw/2017/1/section/45 - LTTA 2017 section 46 - low-value major interest purchases excluded from notification https://www.legislation.gov.uk/anaw/2017/1/section/46 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 supplied source does not explain how to decide whether an SDLT market value election was made. The original SDLT return and lease papers may be needed. - The statutory materials supplied record amendments up to 26 November 2024. Later changes have not been checked. 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: Shared ownership staircasing: LTT relief after an SDLT lease
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