SDLT Treatment for Leases with Indefinite Terms: Initial One-Year Fixed Term

SDLT treatment of leases with no fixed end date

For SDLT, a lease granted for an indefinite term is treated at the start as if it were a fixed-term lease of one year. This initial one-year rule is used to work out any SDLT due on rent or other consideration and to decide whether an SDLT return is needed at that stage. If the lease continues beyond that notional first year, its SDLT position must then be reviewed under separate continuation rules.

• At the date the lease is granted, you ignore how long it may actually last and treat it initially as a one-year lease.
• This special SDLT rule applies even if another legal rule would describe the lease term differently.
• You assess SDLT at the outset by looking at any chargeable rent, premium, or other consideration on that one-year basis.
• An SDLT return is only required initially if SDLT is payable on the rent, other consideration, or both.
• If the lease is still running after the notional first year, further SDLT consequences may arise and must be considered separately.
• A practical difficulty is deciding whether the lease is truly indefinite, rather than a fixed-term lease with break rights or other uncertainty.

Scroll down for the full analysis.

SDLT and leases for an indefinite term: how they are treated at the start

This page explains the SDLT treatment of a lease that does not have a fixed end date. The key point is that, at the outset, SDLT does not treat that lease by reference to its possible real-world duration. Instead, it is treated initially as if it were granted for a fixed term of one year. That starting rule affects whether an SDLT return is needed and how any tax is worked out at the beginning.

What this rule is about

Some leases are granted for an indefinite term rather than for a stated number of years. That can happen where the lease continues until brought to an end in some other way, instead of ending on a fixed date.

For SDLT purposes, there is a special rule for these leases. The rule is about their initial treatment only. It tells you what term to use when first considering the lease for SDLT.

This matters because SDLT on leases can depend on the term of the lease, especially when looking at rent. It also matters for administration, because the need to file a return depends in part on whether any SDLT is payable.

What the official source says

HMRC’s manual says that every lease for an indefinite term is treated initially as a fixed-term lease of one year. It attributes this to paragraph 4(1)(a) of Schedule 17A to Finance Act 2003.

The manual also makes two further points:

• this initial one-year treatment applies regardless of any other statutory rule that might treat the lease as having some different term for another purpose; and
• at the start, notification is required only if SDLT is payable on the rent, on other consideration, or on both.

The manual then points out that if the lease continues beyond that initial notional one-year term, its later SDLT treatment must be considered separately.

What this means in practice

When an indefinite lease is first granted, you do not begin by asking how long it might actually last. For SDLT, you begin with a legal fiction: treat it as a one-year lease.

That has two immediate consequences.

First, the initial SDLT position is calculated on that one-year basis. If there is chargeable rent or other chargeable consideration, you assess whether any SDLT is due using the rules that apply at that stage.

Second, an SDLT return is only needed initially if that first-stage calculation produces SDLT to pay on the rent, the premium or other consideration, or both. The manual does not say that every indefinite lease must automatically be notified. Its point is narrower: initial notification depends on there being SDLT payable.

The rule is expressly said to apply even if some other legal rule would describe the lease term differently. So for SDLT’s initial treatment, the special one-year rule takes priority over those other descriptions of the term.

If the lease is still in existence after the notional first year, the SDLT analysis does not stop there. The initial one-year treatment is only the starting point. A further SDLT consequence may arise if the lease continues, and that later treatment has to be considered under the separate rules dealing with continuation beyond the first year.

How to analyse it

A sensible way to approach an indefinite lease for SDLT is:

• Identify whether the lease is truly for an indefinite term, rather than simply a fixed-term lease with break rights or uncertain commercial expectations.
• For the initial SDLT analysis, treat the lease as if it were granted for one year only.
• Work out whether there is chargeable consideration, including rent and any premium or other consideration.
• Ask whether that initial one-year treatment produces any SDLT liability.
• If SDLT is payable at that stage, consider the notification requirement on that basis.
• Then monitor whether the lease continues beyond the initial notional year, because that can trigger further SDLT consequences under the continuation rules.

The key discipline is not to let the likely practical duration of the lease override the statutory starting rule. The first question is not “How long will this lease probably last?” but “Is it a lease for an indefinite term, and therefore initially treated as one year?”

Example

Suppose a tenant is granted a lease that does not specify a fixed end date and instead continues indefinitely unless ended under its terms. For SDLT purposes at the date of grant, the lease is initially treated as a one-year lease.

You would therefore look at the rent and any other consideration on that one-year basis to see whether any SDLT is due at the outset. If that initial calculation produces SDLT to pay, notification is required. If the lease is still running after the end of that notional first year, you then have to consider the separate SDLT rules that apply when an indefinite lease continues.

Why this can be difficult in practice

The main difficulty is classification. Not every lease with uncertainty around its duration is necessarily a lease “for an indefinite term”. A lease may have a fixed contractual term even if, commercially, nobody expects it to last that long, or even if it can be ended early. The source material here does not set out the boundary in detail, so that question can be fact-sensitive.

A second difficulty is that the initial one-year treatment can feel artificial. People may be tempted to use the lease’s likely actual duration, or a term implied by another legal rule. The manual makes clear that this is not the correct starting point for SDLT.

A third difficulty is timing. The initial treatment is only part of the story. A person may correctly deal with the lease at the start but overlook the need to reconsider the SDLT position if the lease continues beyond the notional first year.

Key takeaways

• An indefinite lease is treated initially for SDLT as a fixed-term lease of one year.
• This initial SDLT treatment applies even if some other statutory rule would treat the lease as having a different term.
• The SDLT position must be revisited if the lease continues beyond that initial notional year.

This page was last updated on 24 March 2026

Useful article? You may find it helpful to read the original guidance here: SDLT Treatment for Leases with Indefinite Terms: Initial One-Year Fixed Term

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