Stamp duty when you swap land or property
Stamp duty on exchanges
When land or property is swapped, SDLT may be based on the market value of what you receive. This can be higher than the value of what you give away.
- The special rule applies if any exchanged interest is a major interest in land.
- Cash, debt, rent and VAT may affect the calculation.
- Mixed deals may require a fair split of value.
Scroll down for the full analysis.
Read the original guidance here:
Stamp duty when you swap land or property
When you swap land or property, the amount you receive can determine stamp duty, rather than simply the amount you hand over. That can produce a higher figure than people expect. The rule matters for any deal where land is all or part of the payment.
What this rule is about
Most property purchases involve cash. An exchange differs because each side can give land, a building or a lease interest to the other, while cash, debt or rent may also form part of the bargain. A deal can involve mixed consideration.
For stamp duty land tax, or SDLT, HMRC calls the amount used for tax “chargeable consideration”. Put simply, it is the value of what you give to get the property.
The law has a special rule for exchanges. The rule stops undervaluation. It prevents someone from receiving a valuable property while using a lower value as the tax figure.
What the official source says
HMRC’s manual explains that the special exchange rule can apply when one or more land deals are made in return for one or more other land deals. The legislation, rather than the manual, decides the result.
- If any part of the exchange is a major interest in land, the special higher-value rule applies.
- In England, this normally means a freehold or a leasehold term recognised by law.
- In Northern Ireland, it includes a freehold or leasehold estate.
- For each property received, compare its market value with the amount that would count without the exchange rule.
- Use the higher amount for stamp duty purposes.
- For this comparison, if the property received is a new lease with rent, add that rent to its market value so both required elements are included. Include it.
- Where every interest exchanged is minor, ignore the value of the interests swapped, but keep any other payment in the calculation.
That distinction sounds technical. It can decide the tax bill.
HMRC also says market value does not include VAT. Yet the usual SDLT rules can include VAT when calculating the ordinary amount paid. These are separate parts of the comparison.
What this means in practice
Do not rely on a lower-value transfer. Where the special rule applies, the value of the property you receive may set the minimum figure instead, even when you give away a lower-value property and expect that transfer to keep the stamp duty figure low. That minimum matters.
- Record the market value of every property or lease interest involved.
- Record separately any cash that either side pays or receives, apart from the land in the exchange.
- Check whether either side takes on, releases or settles a debt.
- For a new lease, identify the rent as well as any premium.
- Keep VAT separate from the market-value evidence.
If a deal includes a sale and leaseback, there is a further point. The leaseback may be exempt if all the conditions in Finance Act 2003 section 57A are met. Even if you claim relief, HMRC’s manual says you should value each side of the exchange by reference to the interest received.
How to analyse it
Start with the real bargain, not the labels in the paperwork. Ask what each person gives and receives, and why. A payment can be split where it relates partly to land and partly to something else.
- Identify every linked transfer, grant or assignment in the arrangement.
- Decide whether each person gives land partly or wholly in return for land.
- Check whether any interest is a major interest in land.
- Work out the market value of each interest received.
- Add rent where the interest received is a new lease at a rent.
- Work out the normal taxable amount without the exchange rule.
- Use the higher figure where the major-interest rule applies.
- Split a mixed payment fairly where it also covers cash, a gift or another matter.
What actually decides the answer? Usually, it is the values and the full deal terms. Calling part of the arrangement a gift does not by itself settle the question.
Example
Imagine Priya gives Omar a plot valued at £400,000. In return, she receives a different plot valued at £600,000. No cash changes hands. Both plots are major interests in land.
Without the special exchange rule, someone might focus only on the £400,000 plot Priya gave away. Under the exchange rule, Priya compares that ordinary figure with the £600,000 market value of the plot she receives, and the higher amount becomes the figure considered before the relevant SDLT rates apply. That comparison controls. The higher figure is £600,000, before applying the relevant SDLT rates.
This example shows only how the value is chosen. It does not state the SDLT due because rates and other rules depend on the transaction date and facts, so it cannot give a final liability for Priya’s transaction. The facts matter.
Why this can be difficult in practice
Land exchanges are rarely as simple as one field for another. A deal may include cash, equipment, fixtures, debt, development promises or a lease. Those details can change what needs to be valued and split.
- People often value only the land they give away, rather than the land they receive.
- A lease can bring both a capital value and rent into the calculation.
- VAT may affect the ordinary-payment comparison even though it is excluded from market value.
- A low stated price does not replace a credible market valuation.
- A fair split must reflect the substance of the whole bargain.
- The leaseback exemption is not automatic merely because a sale and lease happen together.
Key takeaways
- Swapping property can trigger SDLT on the value of what you receive.
- Where a major interest is involved, compare market value with the normal payment amount.
- Use the higher figure, and keep clear evidence of valuations and every part of the deal.
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
- FA 2003 section 50 — schedule 4 rules for taxable payment amounts
- FA 2003 Schedule 4 para 1 — what counts as payment for a land deal
- FA 2003 Schedule 4 para 2 — when vat is included in the taxable amount
- FA 2003 Schedule 4 para 4 — fairly splitting payment between land and other matters
- FA 2003 Schedule 4 para 5 — working out stamp duty on land exchanges
- FA 2003 section 57A — exemption conditions for sale and leaseback arrangements
- FA 2003 section 117 — what counts as a major interest in land
- FA 2003 section 118 — how market value is defined for stamp duty
Official guidance
The pages below are HMRC’s guidance. Guidance is not law. It sets out how HMRC 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. HMRC can also change or withdraw guidance, and it may not cover your facts.
Where this is not settled
- Valuing unusual land, buildings and lease interests may need evidence and professional judgement.
- A fair split of value depends on the full bargain, including cash, gifts and other promises.
- Whether an arrangement meets every condition for the leaseback exemption depends on its documents and facts.
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.
- Signed contracts, transfers and lease documents for every part of the exchange
- A clear record of cash, debt, rent and any other payment
- Reliable market valuations at the relevant date
- Evidence explaining any split between the land deal and another matter
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 UK Stamp Duty Land Tax (SDLT), which applies in England and Northern Ireland. MY QUESTION Stamp duty when you swap land or property [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 - FA 2003 section 50 - schedule 4 rules for taxable payment amounts https://www.legislation.gov.uk/ukpga/2003/14/section/50/2025-11-17 - FA 2003 Schedule 4 para 1 - what counts as payment for a land deal https://www.legislation.gov.uk/ukpga/2003/14/schedule/4/paragraph/1/2025-11-17 - FA 2003 Schedule 4 para 2 - when vat is included in the taxable amount https://www.legislation.gov.uk/ukpga/2003/14/schedule/4/paragraph/2/2025-11-17 - FA 2003 Schedule 4 para 4 - fairly splitting payment between land and other matters https://www.legislation.gov.uk/ukpga/2003/14/schedule/4/paragraph/4/2025-11-17 - FA 2003 Schedule 4 para 5 - working out stamp duty on land exchanges https://www.legislation.gov.uk/ukpga/2003/14/schedule/4/paragraph/5/2025-11-17 - FA 2003 section 57A - exemption conditions for sale and leaseback arrangements https://www.legislation.gov.uk/ukpga/2003/14/section/57A/2025-11-17 - FA 2003 section 117 - what counts as a major interest in land https://www.legislation.gov.uk/ukpga/2003/14/section/117/2025-11-17 - FA 2003 section 118 - how market value is defined for stamp duty https://www.legislation.gov.uk/ukpga/2003/14/section/118/2025-11-17 Guidance page from HMRC on this topic (guidance, not law): https://www.gov.uk/hmrc-internal-manuals/stamp-duty-land-tax-manual/sdltm04020 HOW I WANT YOU TO ANSWER 1. Work from the legislation above. Read it before answering. Guidance from HMRC 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 - Valuing unusual land, buildings and lease interests may need evidence and professional judgement. - A fair split of value depends on the full bargain, including cash, gifts and other promises. - Whether an arrangement meets every condition for the leaseback exemption depends on its documents and facts. Do not give me a conclusion you cannot support from the provisions above.
Legislation links show Finance Act 2003 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 31 August 2026
Useful article? You may find it helpful to read the original guidance here: Stamp duty when you swap land or property
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