Stamp duty when you transfer a property contract before completion
Assignment of rights before completion
When a property contract is passed to someone else before completion, SDLT can apply to more than the final purchase.
- The final buyer’s amount can include the original contract price and the assignment price.
- Each person in a chain who passes rights on may have a notional transaction.
- The detailed statutory position, especially paragraph 8, needs checking.
Scroll down for the full analysis.
Read the original guidance here:
Stamp duty when you transfer a property contract before completion
Stamp duty when you transfer a property contract before completion
If you pass a property contract to somebody else before the sale completes, stamp duty can look beyond the final sale. Both prices can count for the successor. Where rights move through more than one person before completion, each person in the middle can face a separate tax calculation as the transfers are examined. That can matter.
What this rule is about
This HMRC manual page addresses an assignment of rights before completion. Put simply, someone agrees to buy land or property and then transfers their right to complete that deal to another person.
People often see this as a single sale to the final buyer. In law, it may be treated differently. That difference can alter the amount used to calculate SDLT.
As guidance, the HMRC manual is not the law itself. Its focus is on paragraphs 4 to 8 of Schedule 2A to the Finance Act 2003. It explains their effect.
What the official source says
HMRC says that the person taking over the rights is broadly treated as buying from the original seller. For that person, the SDLT amount includes both what they give under the original contract and what they give for the transfer of rights.
- The final buyer’s amount includes the sum due under the original contract.
- It also includes the price or other value given for the assigned rights.
- The original seller is usually treated as the seller for that final buyer’s purchase.
- HMRC says paragraph 8 contains exceptions to that usual seller rule.
According to the source, the law creates a legal fiction, called a notional land transaction, for the person passing on the rights. This is a tax calculation created by law. It does not mean that person has received the land.
- The person passing on rights can have a notional transaction.
- More than one transfer can create an additional transaction for each later middle person.
- The relevant amount can include value given under the original contract by either party.
- For an additional transaction, value given for the earlier transfer can also be included.
What this means in practice
A final transfer document might not show the whole picture. Trace every payment in the arrangement, including money due to the original seller and money paid to take over the contract.
This is especially important where a contract is sold on for a profit before completion. Whether a payment is labelled a fee, premium or deposit in the documents, that description alone does not determine how it is treated for SDLT. Substance matters.
- Keep the original contract, not only the final transfer document.
- Record who paid what, to whom and why.
- Check whether there was one transfer or a chain of transfers.
- Do not assume only the final buyer has an SDLT question.
How to analyse it
Begin with the documents and dates. Names do not control the analysis. What matters is what the documents actually did.
- Was there an original contract to buy land or property?
- Did somebody transfer their right to complete that contract before completion?
- Who took over those rights?
- What did that person give under the original contract?
- What did they give for the transfer itself?
- Were rights passed on again before the sale completed?
- Did the transfer cover all the land, or only part of it?
- Was the original contract substantially performed before it ended or changed?
When transfers involve only part of the land, they split the original contract. In the source, this is treated as two contracts. One covers the land affected by the transfer. Another covers the rest. This keeps the transferred land separate. The original buyer’s remaining land remains separate.
Example
Imagine that Alex agrees to buy a plot for £400,000. Before completion, Alex transfers the right to complete to Beth for £30,000. Beth then pays the original seller £400,000 to complete the purchase.
On HMRC’s broad explanation, Beth’s SDLT calculation uses £430,000: the £400,000 due under the original contract plus the £30,000 paid for the rights. This example does not calculate the tax due. Applicable rates and any relief depend on the transaction date and facts.
Alex may also have a separate notional transaction under the rules described by HMRC. If Alex had first passed the rights to Chris, who then passed them to Beth, the rules can create an additional transaction for the later transfer in the chain.
Why this can be difficult in practice
People can go wrong here because the assignment price is not always the only amount that matters. The original contract price can still form part of the final buyer’s SDLT calculation.
An important gap also appears in the supplied source. Although it says paragraph 8 provides exceptions to the normal rule about who counts as the seller, it does not explain those exceptions. They need checking against the full statutory text.
- A payment may be described differently in different documents.
- Part of the land may be transferred while the original buyer keeps the rest.
- Several transfers can make the payment trail hard to follow.
- Cancellation after substantial performance has separate repayment consequences.
If a substantially performed contract is later cancelled, section 44(9) provides for repayment of tax paid because of that substantial performance. HMRC says that, when this happens, paragraph 6 makes similar provision for the notional and additional transactions discussed here. Check the statute.
Key takeaways
- Final-buyer SDLT can include both prices.
- People who pass contract rights on can have their own notional SDLT transaction.
- Check the full document chain, payment trail and current statutory position.
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 Schedule 2A para 4 — treatment of the person receiving assigned contract rights
- FA 2003 Schedule 2A para 5 — notional transactions for people transferring contract rights
- FA 2003 Schedule 2A para 6 — repayment where a notional transaction later falls away
- FA 2003 Schedule 2A para 7 — separate treatment where only part of land transfers
- FA 2003 Schedule 2A para 8 — exceptions to the usual identification of the seller
- FA 2003 section 44 — repayment after a substantially performed contract is cancelled
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
- The supplied statutory library does not contain the full text of Schedule 2A, including paragraph 8.
- The source page does not state which transactions remain governed by these Schedule 2A rules rather than later rules.
- The answer can depend on the contract wording, each assignment document, payment flows and whether the original contract was substantially performed.
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 contract and its completion terms
- each assignment agreement in the chain
- a record of every payment or other value given
- dates of assignment, substantial performance, completion and any cancellation
- documents showing which part of the land each assignment covers
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 transfer a property contract before completion [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 Schedule 2A para 4 - treatment of the person receiving assigned contract rights https://www.legislation.gov.uk/ukpga/2003/14/schedule/2A/paragraph/4/2025-11-17 - FA 2003 Schedule 2A para 5 - notional transactions for people transferring contract rights https://www.legislation.gov.uk/ukpga/2003/14/schedule/2A/paragraph/5/2025-11-17 - FA 2003 Schedule 2A para 6 - repayment where a notional transaction later falls away https://www.legislation.gov.uk/ukpga/2003/14/schedule/2A/paragraph/6/2025-11-17 - FA 2003 Schedule 2A para 7 - separate treatment where only part of land transfers https://www.legislation.gov.uk/ukpga/2003/14/schedule/2A/paragraph/7/2025-11-17 - FA 2003 Schedule 2A para 8 - exceptions to the usual identification of the seller https://www.legislation.gov.uk/ukpga/2003/14/schedule/2A/paragraph/8/2025-11-17 - FA 2003 section 44 - repayment after a substantially performed contract is cancelled https://www.legislation.gov.uk/ukpga/2003/14/section/44/2025-11-17 HMRC's guidance page on this topic (guidance, not law): https://www.gov.uk/hmrc-internal-manuals/stamp-duty-land-tax-manual/sdltm21540 HOW I WANT YOU TO ANSWER 1. Work from the legislation above. Read it before answering. HMRC guidance is HMRC's 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 statutory library does not contain the full text of Schedule 2A, including paragraph 8. - The source page does not state which transactions remain governed by these Schedule 2A rules rather than later rules. - The answer can depend on the contract wording, each assignment document, payment flows and whether the original contract was substantially performed. 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 1 September 2026
Useful article? You may find it helpful to read the original guidance here: Stamp duty when you transfer a property contract before completion
Search Land Tax Advice with Google
