Substantial Performance of Lease Agreements: SDLT Changes in Scotland from April 2015

When an Agreement for Lease or Missives Can Trigger SDLT Early

SDLT is not always due only when a lease is formally granted or a land transfer is completed. It can arise earlier if an agreement for lease, or Scottish missives, has been substantially performed, such as where the tenant or buyer gets possession or makes relevant payments before completion. This is mainly a timing issue, and for Scottish land transactions from April 2015 the current regime is generally LBTT rather than SDLT.

• Substantial performance can bring the SDLT charge point forward before formal completion.
• An agreement for lease or concluded missives may be enough to raise this issue if the contract is binding.
• Early occupation, possession or certain payments before the lease or transfer is completed are key warning signs.
• The question is whether the party has obtained the practical benefit of the property before legal completion.
• The HMRC material referred to is archived, and Scottish transactions from April 2015 are generally outside SDLT and within LBTT.
• The outcome is fact-sensitive and depends on the contract terms, what actually happened, and the statutory SDLT rules in force.

Scroll down for the full analysis.

Substantial performance of an agreement for lease or missives for SDLT

This page concerns a narrow but important SDLT timing issue: when an agreement for lease, or Scottish missives, may be treated as substantially performed before the formal lease or transfer is completed. That matters because SDLT can be triggered by substantial performance, not just by final completion.

What this rule is about

Under the SDLT rules, a land transaction does not always wait for formal completion before it becomes chargeable. In some cases, tax can arise earlier if the contract has been substantially performed.

An agreement for lease is a contract under which the parties agree that a lease will be granted later. In Scotland, missives are the contractual exchange that forms the binding agreement for a land transaction. The legal question is whether actions taken before the final lease or transfer are enough to count as substantial performance for SDLT purposes.

This is mainly a timing rule. It affects when the transaction is treated as taking place, and therefore when any return and payment obligations may arise.

What the official source says

The source page identifies the topic as “Substantial performance of an agreement for lease or missives” within HMRC’s SDLT manual. It also notes that the page is archived and that, from April 2015, SDLT no longer applies to land transactions in Scotland, which are instead subject to Land and Buildings Transaction Tax.

The practical significance of that note is that this material is part of the SDLT regime and is now mainly relevant to transactions that were still within SDLT, rather than modern Scottish land transactions, which fall under LBTT.

What this means in practice

If a party enters into an agreement for lease, the key issue is whether anything has happened before the lease is formally granted that could amount to substantial performance. If so, SDLT may arise at that earlier stage.

In broad terms, substantial performance is usually concerned with whether the buyer or tenant has effectively obtained the benefit of the property before legal completion. In lease cases, early possession or payment can be especially important. The exact effect depends on the statutory SDLT rules in force and the facts of the transaction.

For Scottish transactions, the archived note matters because readers should not assume that an old SDLT manual page governs current Scottish transactions. Since April 2015, land transactions in Scotland are generally dealt with under LBTT instead.

How to analyse it

When looking at an agreement for lease or missives, ask these questions:

• Is the transaction actually within SDLT, or is it a Scottish transaction now governed by LBTT?
• Is there a binding contract, such as an agreement for lease or concluded missives?
• Has the tenant or purchaser been allowed into possession before formal completion or grant?
• Has any payment been made that could be relevant to substantial performance under the SDLT rules?
• What is the date of formal completion or grant, and is there an earlier date that may already trigger SDLT?

The point is not simply whether the final lease has been executed. The real question is whether the transaction has moved far enough in substance that the SDLT legislation treats it as having happened already.

Example

Illustration: a tenant signs an agreement for lease in England. The formal lease is due to be granted in three months, after fit-out works are finished. But the tenant is allowed into occupation immediately and starts trading from the premises. In that situation, the SDLT analysis may need to focus on whether the agreement for lease has been substantially performed before the lease is formally granted, because that earlier event may affect the tax timing.

By contrast, if the same issue arises in relation to a Scottish land transaction after April 2015, the SDLT manual page is not the current governing regime, because LBTT applies instead.

Why this can be difficult in practice

The source material here is only a heading and an archive note, so it does not set out the detailed statutory test on its own. That means the full answer depends on the underlying SDLT legislation and any fuller HMRC guidance on substantial performance.

This area can also be fact-sensitive. Not every form of early access is necessarily the same as possession for SDLT purposes. Likewise, not every payment made before completion has the same legal effect. The precise contractual terms, what the parties actually did, and whether the transaction is in England, Northern Ireland, Wales for SDLT-era purposes, or Scotland before or after the LBTT change, can all matter.

There is also a common source of confusion between contract formation and tax charge timing. A binding contract does not automatically mean SDLT is due immediately, but substantial performance can bring the charge point forward before formal completion.

Key takeaways

• SDLT can be triggered by substantial performance before a lease is formally granted or a transaction is formally completed.
• An agreement for lease or Scottish missives may therefore matter for SDLT timing, not just the final legal document.
• The HMRC page is archived, and Scottish land transactions from April 2015 are generally governed by LBTT, not SDLT.

This page was last updated on 24 March 2026

Useful article? You may find it helpful to read the original guidance here: Substantial Performance of Lease Agreements: SDLT Changes in Scotland from April 2015

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