Linked property transactions and Land Transaction Tax in Wales
Linked transactions at a glance
LTT can combine separate property deals where they form one wider scheme, arrangement or series between the same parties or connected people.
- Look beyond separate contracts and completion dates.
- A later deal can change tax on an earlier deal.
- Same-date linked deals may go on one LTT return.
Scroll down for the full analysis.
Read the original guidance here:
Linked property transactions and Land Transaction Tax in Wales
Linked property transactions and Land Transaction Tax in Wales
Buying land or property through separate deals does not always keep the tax separate. For Land Transaction Tax in Wales, two or more deals can count as linked. That can raise the LTT bill, sometimes after you have already completed and paid stamp duty.
What this rule is about
The linked-transactions rule prevents people from reducing tax by splitting a single wider deal into smaller parts that they present separately for tax purposes. It examines the real connection between the deals.
One contract for a house and another for nearby land may appear separate on paper. If both form one planned arrangement, LTT can treat them as linked.
That distinction can cost money.
What the official source says
Welsh Revenue Authority explains that the law treats transactions as linked when they form part of one scheme, arrangement or series. The deals must involve the same buyer and seller, or people connected with either of them.
Welsh Revenue Authority guidance explains how it applies this rule. Guidance is not the law, but it shows the authority’s approach.
- The deals may happen at the same time or one after another.
- They can be linked even when each deal has its own contract.
- An arrangement does not need to be written down.
- Nor does the arrangement need to be legally binding.
- A series needs more than one deal simply happening after another.
- Connected people can count as the same buyer or seller.
- The connected-person rules come from Corporation Tax Act 2010 s.1122.
- An exchange covered by the special exchange rule does not count as linked.
Changing roles does not automatically create a link. Consider a case in which A buys land from B in one deal while, in a separate transaction completed later, B buys other land from A. Reverse roles alone do not link the deals.
Connected A and B may still link them.
What this means in practice
When deals are linked, the buyer works out the LTT calculation using the combined amount paid for the linked deals. The calculation then apportions the result between the individual deals.
This means a smaller purchase can bear more tax than it would on its own. You cannot avoid that result just by signing separate contracts or completing on different days.
- List every land deal connected with your purchase.
- Include an option and its later exercise.
- Check whether a connected person buys or sells another part.
- Consider whether one deal changed the price or terms of another.
- Keep documents that explain why each deal happened.
- Check whether a later deal changes tax on an earlier one.
Where a later linked deal makes extra tax due on an earlier one, the buyer must make a return for the earlier deal. The deadline is 30 days after the later deal’s effective date.
Earlier tax is due then.
How to analyse it
Start with the real commercial picture. Ask whether the parties planned one wider outcome despite using several documents, different completion dates, or both, and assess the commercial facts as a whole. Labels do not decide it.
- Identify every relevant land transaction.
- Record who bought and sold in each transaction.
- Check whether any of those people are connected.
- Ask whether the deals formed one scheme or arrangement.
- For deals in sequence, find the extra connection between them.
- Check whether the first deal affected the second deal’s terms.
- Work out whether the exchange exception applies.
- Recalculate LTT across the linked deals if necessary.
- Check whether a new or further return is required.
What is the question that usually decides it? Not whether the contracts look separate. It is whether the facts show one linked plan.
Example
Mae buys a house for £300,000 and, under the same wider arrangement, buys an adjoining plot from the same seller for £100,000.
If the transactions are linked, the calculation starts with the combined £400,000. The tax calculated on that total is then shared between the two deals in proportion to their prices: three quarters for the house and one quarter for the plot.
This example gives no tax rate because the applicable rates depend on the law that is in force on the relevant date when the transactions take effect. Rates can change.
Why this can be difficult in practice
Two purchases close together are not always linked. A buyer may make a later, unrelated purchase from the same seller. The facts decide the answer.
Timing alone proves little. However, if the first purchase affected the price, availability or terms of the second, that may point towards a wider arrangement.
- Separate contracts do not settle the issue.
- Different completion dates do not settle it either.
- Family, company and trust links may matter.
- Informal discussions can form part of the evidence.
- An option can create a separate transaction before anyone exercises it.
- Rent within a lease transaction follows separate calculation rules.
If linked transactions have the same effective date, the buyers may choose to use one LTT return. The law then treats the deals as one notifiable transaction.
Where more than one buyer makes that return, the return rules treat them as joint buyers.
Key takeaways
- Separate paperwork does not prevent property deals being linked.
- The real connection between the deals matters most.
- A later linked deal can create extra LTT and a new filing duty.
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 8 — when land transactions count as linked
- LTTA 2017 section 15 — options and rights that may form linked transactions
- LTTA 2017 section 16 — exchanges that do not count as linked
- LTTA 2017 section 28 — how tax is calculated for linked transactions
- LTTA 2017 section 50 — single returns for transactions with the same date
- LTTA 2017 section 51 — returns required after a later linked transaction
- an Act of 2010 we do not have an identifier for section 112 — rules for deciding whether people are connected (no link: an Act of 2010 we do not have an identifier for)
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 two deals form one scheme, arrangement or series depends on the facts. The key issue may be whether the first deal affected the terms of the second.
- The supplied statutory bundle does not record a currency date. The legislation and guidance should be checked for the date of the transaction.
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.
- All contracts, options and side agreements
- Dates and terms for every related land deal
- Details of each buyer and seller
- Information showing whether any parties are connected
- Emails or notes showing why the transactions happened
- Tax calculations and any earlier LTT 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 Linked property transactions and Land Transaction Tax in Wales [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 8 - when land transactions count as linked https://www.legislation.gov.uk/anaw/2017/1/section/8 - LTTA 2017 section 15 - options and rights that may form linked transactions https://www.legislation.gov.uk/anaw/2017/1/section/15 - LTTA 2017 section 16 - exchanges that do not count as linked https://www.legislation.gov.uk/anaw/2017/1/section/16 - LTTA 2017 section 28 - how tax is calculated for linked transactions https://www.legislation.gov.uk/anaw/2017/1/section/28 - LTTA 2017 section 50 - single returns for transactions with the same date https://www.legislation.gov.uk/anaw/2017/1/section/50 - LTTA 2017 section 51 - returns required after a later linked transaction https://www.legislation.gov.uk/anaw/2017/1/section/51 - an Act of 2010 we do not have an identifier for section 112 - rules for deciding whether people are connected Guidance page from the Welsh Revenue Authority on this topic (guidance, not law): https://www.gov.wales/land-transactions#5054 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 two deals form one scheme, arrangement or series depends on the facts. The key issue may be whether the first deal affected the terms of the second. - The supplied statutory bundle does not record a currency date. The legislation and guidance should be checked for the date of the transaction. 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: Linked property transactions and Land Transaction Tax in Wales
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