Example of SDLT Calculation for Five-Year Rent Reviews in Scotland

SDLT and Five-Year Rent Reviews on Leases

Where a lease includes a rent review after five years, SDLT treatment depends on whether the future rent is fixed, can be worked out by a set formula, or is still uncertain when the lease starts. This can affect how the tax is calculated at the outset and whether it may need to be revisited later. For Scottish land transactions from April 2015, SDLT no longer applies and LBTT applies instead.

• SDLT on a lease is partly based on the rent payable over the lease term, so uncertain future rent can change the tax position.
• A five-year rent review does not automatically mean the same treatment in every case; the wording of the lease and review clause is critical.
• The main question is whether the reviewed rent is already fixed, determined by a clear formula, or genuinely unknown at the effective date.
• Where later rent is uncertain, the initial SDLT calculation may be based on known figures, with a later recalculation once the reviewed rent becomes known.
• Advisers should check the effective date, the rent review mechanism, and whether SDLT is the correct tax regime before relying on older guidance.

Scroll down for the full analysis.

SDLT and five-year rent reviews: variable or uncertain rent

This page concerns how Stamp Duty Land Tax was approached where rent under a lease was variable or uncertain and there was a rent review every five years. Although the source page is now archived and SDLT no longer applies to Scottish land transactions from April 2015, the underlying point is about how lease rent was analysed for SDLT purposes when the future rent could not be fixed at the outset.

What this rule is about

SDLT on leases can depend partly on the rent payable over the term. That is straightforward if the rent is fixed from the start. It is harder where the rent may change in future and the amount is not yet known.

A five-year rent review is a common example. At the grant of the lease, the parties may know that the rent will be reviewed after five years, but they may not know what the reviewed rent will be. The tax rules therefore need a way to deal with rent that is variable or uncertain at the effective date of the transaction.

What the official source says

The source page is identified as an example page dealing with variable or uncertain rent and, specifically, a five-year rent review. The material supplied does not include the worked example itself, only the page title and archive notice.

From that title, the official topic can still be stated at a high level: the page was intended to illustrate how SDLT was calculated where lease rent was not fully known at the start because a review after five years could alter the amount payable.

The archive notice also confirms an important jurisdictional point: from April 2015, SDLT ceased to apply to land transactions in Scotland, which instead fall within Land and Buildings Transaction Tax.

What this means in practice

If a lease contains a five-year rent review, the SDLT analysis does not stop with the headline rent shown at the start of the lease. You need to ask whether later rent is fixed, formula-based, genuinely uncertain, or contingent on future events.

That matters because SDLT on rent is based on the rent profile over the relevant term. If future rent cannot be known at the outset, the return and any later adjustment may depend on the rules for uncertain or variable rent rather than the rules for a simple stepped rent increase.

In practice, the key point is that a rent review clause can change the tax analysis even where the lease has already been completed and the tenant has started paying rent.

How to analyse it

When looking at a lease with a five-year rent review for SDLT purposes, a sensible framework is:

• Identify the effective date of the lease.
• Read the rent clause and the review clause carefully.
• Ask whether the future rent is already fixed by the lease, or whether it will only be determined later.
• Check whether the review mechanism uses a known formula or valuation basis, or whether the amount is still uncertain at the effective date.
• Separate rent that is certain from rent that is uncertain.
• Consider whether the SDLT treatment requires an initial calculation on known figures and a later recalculation once the reviewed rent becomes known.
• Check the jurisdiction and date. If the land is in Scotland and the transaction is from April 2015 onwards, SDLT is not the relevant tax.

This is not just a drafting issue. Conveyancers and tax advisers need to understand what the lease actually requires, because the wording of the review clause may determine whether the future rent is treated as fixed, variable, or uncertain.

Example

Illustration: a tenant takes a 15-year lease. The rent for the first five years is stated in the lease. After year five, the rent is to be reviewed to market rent under a review mechanism that will only be determined at that time.

In that situation, the later rent may not be fully known when the lease is granted. The SDLT calculation therefore may need to treat the post-review rent differently from the initial fixed rent. The exact treatment depends on the detailed statutory rules in force at the time and on whether the review produces a figure that is fixed by formula or genuinely uncertain until later.

Why this can be difficult in practice

The main difficulty is that not every rent review creates the same tax result. Two leases may both say there is a review after five years, but one may contain enough detail to establish the rent mechanically, while the other may leave the amount uncertain until a later valuation or agreement.

Another difficulty is that archived manual pages often assume the reader already knows the surrounding SDLT rules. A worked example may make sense only when read with the legislation and the earlier manual pages on variable or uncertain rent.

There is also a timing issue. SDLT rules changed over time, and the archive notice matters. A reader must first confirm that SDLT is the correct regime before relying on older HMRC material.

Key takeaways

• A five-year rent review can affect how lease rent is calculated for SDLT if the future rent is not known at the start.
• The crucial question is whether the reviewed rent is fixed, formula-based, or genuinely uncertain at the effective date.
• For Scottish land transactions from April 2015 onwards, SDLT does not apply; LBTT applies instead.

This page was last updated on 24 March 2026

Useful article? You may find it helpful to read the original guidance here: Example of SDLT Calculation for Five-Year Rent Reviews in Scotland

View all HMRC SDLT Guidance Pages Here