Stamp duty when a fixed-term lease carries on
When a fixed-term lease carries on
A lease that continues can change its SDLT result, even without a new document.
- Each continued year can lengthen the assumed term
- A return or further return may be due
- Check the statutory deadline, not just HMRC’s manual
Scroll down for the full analysis.
Read the original guidance here:
Stamp duty when a fixed-term lease carries on
If your fixed-term lease carries on, stamp duty land tax can change even though nobody signs a new lease. The extra year can mean more tax or a new return. Timing matters.
What this rule is about
Some leases have a set end date but then run on until either side ends them. Others carry on because the law says they do. For SDLT, that continued occupation is not simply ignored.
The law starts by treating the lease as ending on its original date. If it carries on, it then treats it as one year longer. Each further year of continuation adds another year to the assumed term.
This is a rolling check. It can change the SDLT calculation after the original paperwork was sent.
What the official source says
HMRC’s manual addresses the original fixed term. When it continues beyond that term, it says the tax should be worked out again using a term one year longer. The same pattern repeats if the lease continues again.
- If the first return was filed but no tax was due, HMRC says to send the Stamp Office a letter with the original return reference, the new calculation and your own calculation of tax due.
- HMRC says payment in that case should accompany the letter within 30 days after the end of the term already reported.
- If tax was paid with the first return, the manual says to send the reference and revised calculation, then pay only the increase.
- If no first return was needed, but continuation makes the lease notifiable, HMRC says an SDLT1 and payment are now needed.
- Follow that SDLT1 with a letter. Include its reference, the calculation and the amount due.
That is HMRC guidance, not the law itself. The statute has its own return and payment rules. They should control if the two do not match.
What this means in practice
The key question is not whether a fresh document was signed. Ask instead whether the old lease continued after its stated end date, and for how long. Continuation can trigger tax or a return. It can do so by pushing the figures past the relevant point.
Under the statutory wording supplied, tax is worked out by reference to the original effective date. The return procedure uses a different date. Its relevant date is adapted to the last day of the extra year. Those are different jobs.
- Keep the original SDLT return reference, often called the UTRN, with the lease papers.
- Record the fixed end date and the date the lease actually ended, if it has ended.
- Rework the SDLT position at the end of each year of continuation.
- Pay any tax or extra tax by the deadline for the return.
This is the part people miss: an original nil result does not always stay nil.
How to analyse it
Work through the facts in order. Do not start by assuming that staying in the property creates a brand-new lease for SDLT.
- Read the lease. Does it have a fixed term followed by continuation until ended?
- Check whether it could continue beyond the term automatically under the law.
- Find the exact final day of the fixed term already used for the SDLT calculation.
- Establish whether the lease continued for all or only part of the next year.
- Recalculate SDLT on the longer assumed term. Use the rules that applied on the original effective date.
- Decide which statutory filing route applies: a first return because the transaction has become notifiable, or a further return because tax has become due or has increased.
There is an important deadline split. If continuation makes the transaction notifiable, the statute requires a return within 14 days after the end of that one-year period. If it makes tax due for the first time, or increases tax, and the first route does not apply, it requires a further return within 30 days.
Example
Amir’s lease has a fixed five-year term ending on 31 March. It says that it then continues until ended. He remains under the lease after that date. For SDLT, the first continuation is treated as a six-year term.
On the facts, the revised calculation shows that extra tax is due. The relevant one-year continuation period ends on 31 March of the following year. Amir must make the further return and pay the extra amount within 30 days after that date. If the lease ends part way through that extra year, the law instead treats it as continuing only until the real end date.
Why this can be difficult in practice
A lease can carry on through its wording or through the law, and the papers may not make the position obvious. The statutory rules also changed after the HMRC manual wording in the brief was published. The manual’s method of sending a letter is an HMRC instruction; paragraph 3 does not itself say that a letter is the required form.
- Do not confuse the original fixed end date with the later date used for the continued term.
- Do not assume that no original SDLT1 means no later filing duty.
- Do not treat a late first return as penalty-free merely because the manual mentions a 14-day period.
- Check whether the lease ended during the extra year, since that shortens the assumed continuation.
- Check statutory exceptions during continuation. They concern a new lease of the same or substantially the same premises.
The supplied statute is current only to 17 November 2025. A transaction or filing question after that date needs a check against the current legislation before reliance.
Key takeaways
- A fixed-term lease that carries on can trigger a new SDLT calculation.
- The first extra year normally adds one year to the assumed lease term.
- Use the statute for the deadline; treat HMRC’s letter process as guidance.
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 17A para 3 — continued fixed-term leases and later SDLT returns
- FA 2003 Schedule 17A para 3A — new leases during a continuation period
- FA 2003 Schedule 10 para 3 — late return penalties after the filing date
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 HMRC manual wording appears not to reflect the current statutory distinction between a 14-day first return and a 30-day further return. Current HMRC administrative practice should be 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 signed lease and any continuation clause.
- Evidence of the original fixed end date and actual termination date.
- The original SDLT return, UTRN and tax calculation.
- Rent and other payment figures needed to recalculate SDLT.
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 a fixed-term lease carries on [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 17A para 3 - continued fixed-term leases and later SDLT returns https://www.legislation.gov.uk/ukpga/2003/14/schedule/17A/paragraph/3/2025-11-17 - FA 2003 Schedule 17A para 3A - new leases during a continuation period https://www.legislation.gov.uk/ukpga/2003/14/schedule/17A/paragraph/3A/2025-11-17 - FA 2003 Schedule 10 para 3 - late return penalties after the filing date https://www.legislation.gov.uk/ukpga/2003/14/schedule/10/paragraph/3/2025-11-17 Guidance page from HMRC on this topic (guidance, not law): https://www.gov.uk/hmrc-internal-manuals/stamp-duty-land-tax-manual/sdltm50450 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 - The supplied HMRC manual wording appears not to reflect the current statutory distinction between a 14-day first return and a 30-day further return. Current HMRC administrative practice should be checked. 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 a fixed-term lease carries on
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