Stamp duty when a lease rent increase happens in the first five years
Rent increases can trigger SDLT
If a lease is changed to increase rent outside its original terms, the change can be treated as a new lease for SDLT. This mainly matters where the higher rent starts before the fifth year ends.
- Check whether the original lease already allowed the increase.
- Check the date higher rent first applies.
- Check whether a new or further SDLT return is required.
Scroll down for the full analysis.
Read the original guidance here:
Stamp duty when a lease rent increase happens in the first five years
Stamp duty when a lease rent increase happens in the first five years
If you agree to pay more rent under a lease, do not assume it is only a landlord and tenant issue. A change made outside the original lease can create a new stamp duty land tax, or SDLT, event. That can mean another return to HMRC.
What this rule is about
SDLT on a lease can take account of the rent due over its term. Special rules apply when rent changes during the first five years.
There are two quite different situations. Your lease may already contain a rent-review clause. Or you and the landlord may later agree a higher rent that the lease never allowed for.
That distinction sounds small. It can decide whether the increase falls within the original SDLT calculation or counts as a fresh lease for tax purposes.
What the official source says
HMRC’s manual says a variation that increases rent outside the lease terms can count as a new lease grant. For that deemed new lease, only the extra rent created by the change counts as payment.
- The higher rent must take effect before the end of the fifth year of the lease.
- A variation, rather than a clause already in the lease, must cause the increase.
- HMRC says the relevant SDLT date is the date of the variation deed.
- Use the part of the original lease term still left when the rent increases for the return.
- These transactions may be linked: the original lease and the deemed new lease.
- Where they are linked, the linked-transaction rules calculate tax by considering their rent together.
The law itself treats a variation as a new lease grant where it increases rent from a date before the fifth year ends. It excludes an increase made under the original lease and certain statutory agricultural rent reviews.
Net present value is the tax method that puts future rent into a value at the start date. You do not need to calculate it by simply adding every future payment together.
What this means in practice
A deed of variation can therefore create a tax event even though nobody has moved, bought a new building, or signed a replacement lease. The tax issue comes from the extra rent.
First ask why the rent rose. If the original lease required the increase, it is not this type of variation. The existing rules for variable or uncertain rent may apply instead.
- Keep the original lease, not just the variation deed.
- Check exactly when the lease term began.
- Check the date on which the higher rent starts, not only the deed date.
- Work out the extra rent only, rather than treating all rent as new.
- Check how much of the lease term remained on the increase date.
- Check whether an SDLT return was made for the original lease.
HMRC says that, where the deemed lease is not linked to the original one, you must report it unless an exception applies. The exceptions depend on matters such as the lease term and the amount of rent or other payment.
Where the two leases are linked and the original lease was already reportable, HMRC says you must file a further SDLT1 within 14 days of the deed date. You may also need a further return for the original lease if the linked calculation creates more tax.
If the original lease was not reportable, the rent increase may change that. HMRC says that you may then need two SDLT1 forms: one for the original lease and one for the deemed new lease. Both are due within 14 days of the deed date.
How to analyse it
Start with the documents and dates. Do not begin with a tax calculation. The answer often turns on one sentence in the original lease.
- When did the lease term start?
- When was the variation deed completed?
- From what date does the higher rent apply?
- Does that date fall before the fifth year of the lease ends?
- Did the original lease itself allow the rent to rise?
- Is this a statutory rent review for an agricultural tenancy?
- What is the extra rent for the remaining lease term?
- Do the original lease and the later deemed lease form part of one arrangement?
- Was the original lease reportable to HMRC?
- Does the later event make the earlier lease reportable or create extra tax?
Linked transactions are transactions forming part of one scheme, arrangement or series between the same parties, or connected parties. This is not simply a label the parties can choose. The facts and documents matter.
Example
Imagine Priya takes a 10-year lease. In year two, she and the landlord sign a deed that raises the rent from £20,000 to £25,000 a year. The original lease had no clause allowing that increase.
Her extra rent is £5,000 a year. Because the rise starts in year two, it starts before the fifth year ends. HMRC’s manual says the change counts as a new lease grant for the additional £5,000 rent, using the eight years left on the original term.
Now change one fact. The deed is signed in year four, but it says the higher rent begins in year six. HMRC says the special rule does not apply because the rent rise does not take effect in the first five years.
No tax figure is shown here. The result depends on the net present value calculation, the type of property, the rates in force on the relevant dates, and whether the transactions are linked.
Why this can be difficult in practice
This is the part people get wrong: a document called a rent review may not be a rent review under the original lease. What matters is whether the original lease gave a right to raise rent in that way.
Timing can also be awkward. A deed may be signed before year five ends but make the higher rent start later. On HMRC’s stated view, that does not fall within this rule.
- Calling a change a rent review does not settle its SDLT treatment.
- A side letter can matter if it changes what rent is payable.
- HMRC treats a VAT amount added to existing rent differently.
- HMRC does not treat a statutory agricultural rent review as a lease variation for this rule.
- Linking can change both the calculation and the returns required.
- The return deadline runs from the relevant SDLT date, so delays can be costly.
HMRC’s manual is guidance, not legislation. Read its view on the deed date and post-five-year changes alongside the statutory wording, especially where a variation has unusual timing or backdated effect.
Key takeaways
- An extra rent agreement outside the lease can create a new SDLT event.
- The key date is when the higher rent starts, not just when discussions began.
- Check the original lease, the variation deed and any earlier SDLT return together.
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 7 — rent that varies under the lease or is uncertain
- FA 2003 Schedule 17A para 8 — later adjustment when uncertain rent becomes known
- FA 2003 Schedule 17A para 13 — rent increases treated as a new lease grant
- FA 2003 Schedule 5 para 2 — tax calculation for rent and linked lease transactions
- FA 2003 section 76 — 14-day deadline for a land transaction return
- FA 2003 section 77 — transactions that must be reported to HMRC
- FA 2003 section 77A — exceptions from the duty to make a return
- FA 2003 section 81A — later linked transaction requiring an earlier return
- FA 2003 section 108 — when land transactions are linked for SDLT
- FA 2003 section 119 — the effective date used for SDLT purposes
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
- HMRC’s manual says the effective date of the deemed new lease is the date of the variation deed. Schedule 17A paragraph 13 does not expressly state that date, so this is HMRC’s published view rather than wording found directly in that paragraph.
- The current wording of Schedule 17A paragraph 13 focuses on rent increased from a date before the end of year five. The manual also says a variation made after year five does not qualify. Unusual backdated variations need careful checking against the legislation and current HMRC practice.
- Whether the original lease and the deemed new lease are linked depends on the facts and arrangements.
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 signed lease and every later variation deed
- the lease start date and the date higher rent first applies
- the rent schedule before and after the change
- details of any rent-review clause in the original lease
- the original SDLT return and whether the original lease was reportable
- evidence of any VAT election or agricultural tenancy status
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 lease rent increase happens in the first five years [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 7 - rent that varies under the lease or is uncertain https://www.legislation.gov.uk/ukpga/2003/14/schedule/17A/paragraph/7/2025-11-17 - FA 2003 Schedule 17A para 8 - later adjustment when uncertain rent becomes known https://www.legislation.gov.uk/ukpga/2003/14/schedule/17A/paragraph/8/2025-11-17 - FA 2003 Schedule 17A para 13 - rent increases treated as a new lease grant https://www.legislation.gov.uk/ukpga/2003/14/schedule/17A/paragraph/13/2025-11-17 - FA 2003 Schedule 5 para 2 - tax calculation for rent and linked lease transactions https://www.legislation.gov.uk/ukpga/2003/14/schedule/5/paragraph/2/2025-11-17 - FA 2003 section 76 - 14-day deadline for a land transaction return https://www.legislation.gov.uk/ukpga/2003/14/section/76/2025-11-17 - FA 2003 section 77 - transactions that must be reported to HMRC https://www.legislation.gov.uk/ukpga/2003/14/section/77/2025-11-17 - FA 2003 section 77A - exceptions from the duty to make a return https://www.legislation.gov.uk/ukpga/2003/14/section/77A/2025-11-17 - FA 2003 section 81A - later linked transaction requiring an earlier return https://www.legislation.gov.uk/ukpga/2003/14/section/81A/2025-11-17 - FA 2003 section 108 - when land transactions are linked for SDLT https://www.legislation.gov.uk/ukpga/2003/14/section/108/2025-11-17 - FA 2003 section 119 - the effective date used for SDLT purposes https://www.legislation.gov.uk/ukpga/2003/14/section/119/2025-11-17 Guidance page from HMRC on this topic (guidance, not law): https://www.gov.uk/hmrc-internal-manuals/stamp-duty-land-tax-manual/sdltm15010 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 - HMRC's manual says the effective date of the deemed new lease is the date of the variation deed. Schedule 17A paragraph 13 does not expressly state that date, so this is HMRC's published view rather than wording found directly in that paragraph. - The current wording of Schedule 17A paragraph 13 focuses on rent increased from a date before the end of year five. The manual also says a variation made after year five does not qualify. Unusual backdated variations need careful checking against the legislation and current HMRC practice. - Whether the original lease and the deemed new lease are linked depends on the facts and arrangements. 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 lease rent increase happens in the first five years
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