Effective Dates for Lease Transactions: LBTT6002 Worked Example and Guidance

LBTT lease dates when a tenant moves in before signing

For LBTT, the tax date for a new lease is not always the date the formal lease is signed. If lease terms have already been agreed and the tenant takes possession and starts paying rent before signing, the agreement may be treated as substantially performed, so the effective date for LBTT can arise earlier. This affects the filing date, payment timetable and the timing of later lease review returns.

• Where missives or another binding agreement are in place, early occupation and rent payment can make the LBTT effective date earlier than the signature date.
• In the example, a 10-year lease began on 1 April 2017, the tenant moved in and paid rent on that date, and the formal lease was signed on 20 May 2017; the effective date was 1 April 2017.
• For the original grant of a new lease, the relevant date is the same as the effective date.
• For a later three-yearly lease review return, the relevant date is the review date itself, even though the lease’s original effective date stays the same.
• In practice, the key facts are whether there was a binding agreement, when possession was given, when rent was first paid, and whether those events happened under the agreed lease terms rather than a temporary arrangement.

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LBTT leases: effective date and relevant date when a tenant takes possession before the lease is signed

This page explains how Land and Buildings Transaction Tax applies where a lease is agreed first, the tenant moves in and starts paying rent, and the formal lease document is signed later. The timing matters because it affects when the LBTT return is due and, for leases, how later review returns are timed.

What this rule is about

Lease transactions can have more than one important date. In straightforward cases, the date the lease is signed may seem like the obvious date to use. But that is not always the tax date.

For LBTT, the key question is whether the agreement for lease has already been substantially performed before the formal lease is executed. If it has, the tax position can arise earlier than the signing date.

The source material deals with a common practical situation:

• the parties agree lease terms in missives,
• the lease is to be signed later,
• the tenant takes possession, and
• the tenant starts paying rent before the document is signed.

In that situation, the tenant’s entry into possession and payment of rent can fix the effective date for LBTT before the formal lease is signed.

What the official source says

The official example describes a 10-year lease at an annual rent of £20,000. The lease is agreed in missives to commence on 1 April 2017, but the formal lease document is not signed by both parties until 20 May 2017.

However, on 1 April 2017 the tenant both:

• takes possession of the property, and
• begins paying rent at the agreed rate.

The official position is that the LBTT return should use 1 April 2017 as the effective date. That is because the missives were substantially performed on that date by the tenant taking possession and making the first rent payment.

The source also states that, for the grant of a new lease, the relevant date is the same as the effective date. In the example, both are therefore 1 April 2017.

It then distinguishes this from the first three-yearly lease review return. For that later return, the review date is 1 April 2020. For the purposes of that first three-year review return, the relevant date is 1 April 2020, while the effective date remains 1 April 2017.

What this means in practice

The practical point is simple but important: you do not necessarily wait for the lease document to be signed before treating the lease as effective for LBTT.

If the tenant has already moved in and started paying rent under the agreed lease terms, the transaction may already have reached its effective date for tax purposes. In the example, that happened on 1 April 2017, not on 20 May 2017.

This affects at least three things:

• the date to enter on the LBTT return for the grant of the lease,
• the timetable for filing and paying any tax due, and
• the timing of later lease review returns.

It also shows why conveyancers and taxpayers should not focus only on the completion or signature date. Actual occupation and payment behaviour may be more important.

How to analyse it

A sensible way to analyse this type of lease transaction is to ask the following questions.

• Was there already a binding agreement for the lease, such as concluded missives?
• When did the tenant first take possession of the property under that agreement?
• When did the tenant first pay rent under the agreed lease terms?
• Did those events happen before the formal lease document was signed?
• Is the return for the original grant of a new lease, or is it a later three-yearly lease review return?

For the original grant of a new lease, if the agreement has been substantially performed, the effective date can be the earlier date of substantial performance rather than the later signature date.

The source example treats both taking possession and making the first rent payment as the acts that substantially performed the missives. On those facts, 1 April 2017 is the effective date.

For later three-yearly review returns, the source makes clear that the relevant date for that review return is the review date itself, even though the effective date of the lease remains the original effective date.

Example

A landlord and tenant agree lease terms in missives for a 10-year lease starting on 1 April. The tenant moves into the premises on 1 April and pays the first month’s rent. The formal lease is not signed until 20 May.

On these facts, the LBTT return for the grant of the lease should use 1 April as the effective date, because that is when the agreement was substantially performed. For the original grant, the relevant date is also 1 April.

If the first three-year lease review falls on 1 April three years later, that later review return uses that review date as its relevant date. The original effective date of the lease does not change.

Why this can be difficult in practice

The difficulty is often factual rather than conceptual. In real transactions, the parties may not be clear about exactly when possession was given, whether occupation was under the agreed lease or under a temporary arrangement, and whether rent paid before signature was truly rent under the lease or something else.

The source example is clear because both possession and payment of rent occurred on the agreed commencement date and matched the lease terms. Other cases may be less tidy.

Another source of confusion is the difference between effective date and relevant date. For the original grant of a new lease, the source says they are the same. But for a three-yearly lease review return, they can differ. If that distinction is missed, returns may be prepared using the wrong date.

Key takeaways

• For a new lease, the LBTT effective date can be earlier than the date the lease document is signed.
• If the tenant takes possession and starts paying rent under agreed missives, that may amount to substantial performance.
• For a three-yearly lease review return, the relevant date is the review date, even though the lease’s effective date remains the original one.

This page was last updated on 24 March 2026

Useful article? You may find it helpful to read the original guidance here: Effective Dates for Lease Transactions: LBTT6002 Worked Example and Guidance

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