When an assigned lease is treated as a new lease for SDLT
Lease assignments after SDLT relief
A lease assignment may count as a new lease for SDLT where the original lease received a listed relief or exemption.
- The first non-exempt assignment is the key event.
- SDLT can apply to remaining rent and any assignment price.
- Earlier relief documents and timing are central evidence.
Scroll down for the full analysis.
Read the original guidance here:
When an assigned lease is treated as a new lease for SDLT
The law can sometimes treat an assignment of a lease as a new lease for stamp duty land tax. SDLT can then apply both to rent still payable and to any price paid for taking over the lease. This usually matters when the original lease received a tax relief.
What this rule is about
Taking over somebody else’s lease normally amounts to an assignment, rather than a new grant by the landlord. Some exempt original leases can trigger special treatment.
When a lease first leaves the relief arrangements through a grant, the rule stops the relief continuing without another SDLT check. The law can therefore treat a later transfer as a fresh lease grant.
Although the distinction sounds technical, it can alter the tax bill.
What the official source says
According to HMRC’s manual, the first assignment not covered by a listed exemption or relief counts as a grant of a lease by the outgoing tenant. Finance Act 2003 Schedule 17A, paragraph 11 sets out that rule.
- The original grant must have qualified for an exemption under one of the specified provisions.
- Sale and leaseback, group, reconstruction, charity and certain fund seeding reliefs are among those provisions.
- It must be the first assignment not exempt under those provisions.
- Bare trusteeship for the outgoing tenant disqualifies it.
- The treated new lease has the time still left on the original lease.
- Its terms match those on which the incoming tenant holds the lease after the assignment.
For the treated lease, HMRC uses the rent, rent-review dates and other lease terms in force after the transfer. The law creates no wholly new commercial bargain. Instead, SDLT applies the new lease treatment.
An important limit applies. If listed relief was withdrawn before the assignment, including withdrawal of group, reconstruction or acquisition, charity and specified seeding reliefs, the rule cannot apply.
What this means in practice
Once the rule applies, SDLT treats the outgoing tenant as granting the remaining lease to the incoming tenant. HMRC says remaining rent may attract SDLT. That means putting a present value on rent due over future years.
A capital payment for the assignment is separate. Put simply, SDLT can also apply to the price paid to the outgoing tenant. Any rent charge does not replace that separate charge.
- Check whether the original lease had a listed SDLT relief or exemption.
- Work out whether this is the first non-exempt assignment.
- Use the unexpired lease term, rather than the original full term.
- Use the rent and review terms that apply after the assignment.
- Consider the price paid for the assignment separately from the rent.
- Check whether the treated grant requires reporting to HMRC.
Where a return is required, and where the reporting rules and facts make the assignment reportable, taxpayers must file it within the usual statutory deadline of 14 days after the effective date. That deadline remains unchanged. HMRC’s example does not mean that every assignment always needs a return.
How to analyse it
Begin with the old transaction, not the new buyer. Reviews focused only on the deed can miss the original SDLT position.
- Find the SDLT return, claim or exemption used on the original lease grant.
- Identify exactly which relief or exemption was used.
- Check whether that relief is one listed in Schedule 17A paragraph 11.
- Ask whether any earlier assignment was already outside the listed exemptions.
- Check whether the incoming tenant is a bare trustee for the outgoing tenant.
- Check for an event that withdrew the earlier relief before the assignment.
- Record the remaining term, rent, reviews and any premium paid.
- Apply the SDLT rules in force when the assignment takes effect.
What actually decides the issue? Usually, the original relief claim and the timing of any event that could withdraw it determine the answer.
Example
HMRC’s manual gives this type of example. A company grants its subsidiary a 25-year lease, and the subsidiary claims group relief. One year later, the subsidiary assigns the lease to an unconnected company. SDLT treats the assignment as a grant by the subsidiary of a 24-year lease. SDLT may cover remaining rent and assignment payment.
One changed fact produces a different answer. Where the original tenant paid SDLT on the original lease grant and did not claim one of the listed reliefs, this rule does not treat the later assignment as a new lease. A payment for the assignment may still be relevant for SDLT.
Why this can be difficult in practice
Group reorganisation files often leave old lease records incomplete. A relief may have been claimed years before the assignment, while the current parties may lack the return or supporting papers.
It may seem that only a lease passing to an outside buyer matters. That is not enough. Tax history from the original grant matters just as much.
- A relief claim may be confused with an exemption, even though the records differ.
- Group structures can make it hard to identify an earlier assignment.
- A withdrawal event before the transfer may prevent this special rule applying.
- Rent reviews and variable rent can make the remaining-rent calculation more involved.
- Assignment price and future rent are separate.
Key takeaways
- A relieved original lease matters. It counts as a new lease.
- For that treatment, use the remaining term and post-assignment terms.
- Check the original SDLT relief, any withdrawal event, rent and assignment price.
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 11 — when an assigned relieved lease counts as a grant
- FA 2003 Schedule 5 para 2 — how SDLT on lease rent is calculated
- FA 2003 Schedule 5 para 9 — separate SDLT charge on a lease premium
- FA 2003 section 76 — deadline for delivering a land transaction return
- FA 2003 section 77 — which land transactions must be reported
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 documents and transaction history may not clearly show whether the original lease benefited from a listed relief or exemption.
- A withdrawal of relief before the assignment can change the result.
- The facts needed to calculate tax include the remaining term, rent pattern, property type and any sum paid for the assignment.
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 lease and any later variations
- The SDLT return and relief claim for the original grant
- Documents recording the assignment and any payment
- The rent schedule, review clauses and remaining lease term
- Evidence of any event that withdrew the earlier relief
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 When an assigned lease is treated as a new lease for SDLT [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 11 - when an assigned relieved lease counts as a grant https://www.legislation.gov.uk/ukpga/2003/14/schedule/17A/paragraph/11/2025-11-17 - FA 2003 Schedule 5 para 2 - how SDLT on lease rent is calculated https://www.legislation.gov.uk/ukpga/2003/14/schedule/5/paragraph/2/2025-11-17 - FA 2003 Schedule 5 para 9 - separate SDLT charge on a lease premium https://www.legislation.gov.uk/ukpga/2003/14/schedule/5/paragraph/9/2025-11-17 - FA 2003 section 76 - deadline for delivering a land transaction return https://www.legislation.gov.uk/ukpga/2003/14/section/76/2025-11-17 - FA 2003 section 77 - which land transactions must be reported https://www.legislation.gov.uk/ukpga/2003/14/section/77/2025-11-17 Guidance page from HMRC on this topic (guidance, not law): https://www.gov.uk/hmrc-internal-manuals/stamp-duty-land-tax-manual/sdltm17090 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 documents and transaction history may not clearly show whether the original lease benefited from a listed relief or exemption. - A withdrawal of relief before the assignment can change the result. - The facts needed to calculate tax include the remaining term, rent pattern, property type and any sum paid for the assignment. 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: When an assigned lease is treated as a new lease for SDLT
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