LTT tax avoidance: when saving tax is a main purpose
LTT and a tax-saving main purpose
A lower LTT bill is not enough by itself to show tax avoidance. The question is whether getting the tax advantage was a main reason for the arrangement.
- Consider the whole plan and its real business purpose.
- Known tax savings are not automatically main purposes.
- The arrangement must also be artificial for the general anti-avoidance rule to apply.
Scroll down for the full analysis.
Read the original guidance here:
LTT tax avoidance: when saving tax is a main purpose
Paying the least Land Transaction Tax (LTT) lawfully due is not, by itself, tax avoidance. The key question is whether saving tax was a main reason for the steps you took. That can matter where a property deal uses unusual or extra steps to reduce LTT.
What this rule is about
LTT is Wales’s tax on land and property purchases. The general anti-avoidance rule can undo a tax advantage from an artificial tax avoidance arrangement.
This appendix asks an early question: was obtaining a tax advantage a main purpose when the arrangement was entered into, rather than simply a consequence? That question comes first. Tax advantages include reduced tax and repayments. They also include extra relief and delayed payment.
That distinction sounds narrow. It can decide whether the anti-avoidance rule is even in play.
What the official source says
The official guidance explains that a tax saving must be more than a helpful feature of a deal. A main purpose is required. For the person entering into the arrangement, obtaining the advantage must have been a main purpose, or one of several main purposes, rather than merely an incidental feature. That is the test.
Lawful tax savings alone prove nothing. A sensible person will normally consider tax when deciding how to carry out a genuine deal.
- A tax saving can be known about without being a main purpose.
- A tax saving can be relevant without being a main purpose.
- A tax saving that is merely an added benefit will not normally be enough.
- A genuine business reason does not automatically settle the question either way.
- The importance of the saving to the person involved matters.
- All the facts and reasonable inferences must be considered together.
The guidance also makes an important wider point. A step with no real business or commercial purpose, added only to obtain a tax result, may be very different from a normal commercial choice between two ways of completing the same deal.
What this means in practice
Do not assume that a lower LTT bill makes a deal suspect. The law does not require you to choose the route with the highest tax bill.
But the position becomes harder if extra steps seem to have no practical role except reducing LTT. Calling those steps commercial will not decide the issue. What they actually achieved matters.
- Keep sight of the real reason for each step in the deal.
- Compare the tax result with the business result.
- Ask whether the deal would still make sense without the tax saving.
- Look at the whole plan, including linked steps and agreements.
- Do not treat a tax saving as irrelevant simply because there was also a business aim.
If your solicitor has raised an LTT anti-avoidance concern, this is the part to pin down: why was each step included?
How to analyse it
Start with the purpose question, but do not stop there. The main-purpose test is one stage of the general anti-avoidance rule. The arrangement must also be artificial before the rule can counteract the tax advantage.
- Identify every step that forms part of the plan.
- Work out the tax advantage said to arise from it.
- List the non-tax reasons for entering into each step.
- Decide how important the tax saving was at the time.
- Check whether the steps had genuine economic or commercial substance.
- Ask whether the route was reasonable under the Welsh tax rules that apply.
- Consider whether the outcome appears outside what the relevant law expected.
- Check whether the approach matched accepted general practice at the time.
Timing matters. Purpose is tested at entry. The relevant purposes are those held when the arrangement was entered into, rather than an explanation prepared later after a challenge to the arrangement has arisen. Later explanations carry less weight.
Example
Sarah wants to buy a shop for her growing business. There are two normal ways to complete the purchase. One route gives the same shop, at the same price, with the same business result, but creates a lower LTT bill. Sarah chooses that route after taking tax into account. On those facts alone, the lower bill does not show that tax saving was a main purpose.
Now change one fact. The plan adds a separate step. The added step changes nothing for Sarah. It leaves Sarah’s use of the shop, the funding, the price, and her business position unchanged, while its only apparent result is a lower LTT bill. That matters. That does not prove the rule applies, but it raises a much sharper question about both purpose and whether the step was artificial.
Why this can be difficult in practice
Purpose is rarely written down in one neat sentence. A property deal can have several real aims: price, risk, finance, timing, family plans, and tax. The task is to judge their relative weight.
This is where people often go wrong. They argue either that every tax saving is avoidance, or that a business reason ends the matter. Neither shortcut reflects the official guidance.
- A tax saving may be important even where it was not the only aim.
- A business purpose may be real but still not explain every step.
- Emails, meeting notes, and deal papers may show what mattered at the time.
- A later account of the plan may carry less weight than contemporaneous documents.
- One step can look ordinary on its own but different as part of a wider series.
- There is no set amount of tax saving that makes it a main purpose.
The official guidance helps explain the approach, but it is not the law itself. The statutory wording remains the starting point, and the current version should be checked because the supplied statute has no recorded currency date.
Key takeaways
- Choosing the lower-tax route does not alone make tax saving a main purpose.
- The real importance of the tax saving is a question of fact.
- A tax-saving purpose is only one part of the LTT anti-avoidance rule.
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
- TCMA 2016 section 81B — when an arrangement has a tax-saving main purpose
- TCMA 2016 section 81C — when a tax avoidance arrangement is artificial
- TCMA 2016 section 81D — what counts as a tax advantage
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 saving LTT was a main purpose is a fact-based question. There is no fixed percentage or checklist that decides it.
- The supplied statutory material does not record a currency date. Current wording and any later changes should be checked before relying 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.
- The commercial reasons for the steps taken
- Documents prepared when the plan was made
- The tax saving expected from each possible route
- Whether the steps had a real effect beyond reducing tax
- The full sequence of linked steps, not just one step alone
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 tax avoidance: when saving tax is a main purpose [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 - TCMA 2016 section 81B - when an arrangement has a tax-saving main purpose https://www.legislation.gov.uk/anaw/2016/6/section/81B - TCMA 2016 section 81C - when a tax avoidance arrangement is artificial https://www.legislation.gov.uk/anaw/2016/6/section/81C - TCMA 2016 section 81D - what counts as a tax advantage https://www.legislation.gov.uk/anaw/2016/6/section/81D Guidance page from the Welsh Revenue Authority on this topic (guidance, not law): https://www.gov.wales/tax-collection-and-management-wales-act-2016-general-anti-avoidance-rule-technical-guidance#6615 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 saving LTT was a main purpose is a fact-based question. There is no fixed percentage or checklist that decides it. - The supplied statutory material does not record a currency date. Current wording and any later changes should be checked before relying 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: LTT tax avoidance: when saving tax is a main purpose
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