Guidance on SDLT Repayment for Annulled or Rescinded Contracts Under FA

SDLT repayment when a substantially performed property contract later fails

If SDLT was paid because a land contract was substantially performed before completion, and the deal is later cancelled, undone or never completed, some or all of that SDLT may be repayable. The repayment is not automatic and must be claimed by amending the original land transaction return.

• This rule applies only where SDLT was originally charged because the contract was substantially performed, such as where the buyer took possession early.
• A repayment may be available if the contract is later rescinded, annulled, partly undone or otherwise not brought into effect.
• The words “to that extent” matter, because repayment may be only partial if part of the transaction still went ahead.
• You need to check what actually happened after substantial performance and whether it was a true cancellation, a partial unwind or just a variation of the original deal.
• The claim must be made by amending the original SDLT return under the relevant Finance Act 2003 procedure.

Scroll down for the full analysis.

SDLT repayment where a substantially performed contract is later cancelled or not completed

This page explains what happens if Stamp Duty Land Tax has already been charged because a land contract was substantially performed, but the contract is later cancelled, undone, or never actually completed. The key point is that SDLT may be repayable, but the repayment is not automatic. It must be claimed by amending the original land transaction return.

What this rule is about

Under the SDLT rules, tax can become chargeable before a formal completion takes place. One important example is where a contract is “substantially performed”. In broad terms, that means the transaction is treated as having happened for SDLT purposes even though the contract has not yet been completed in the usual conveyancing sense.

This matters because parties may pay SDLT at that stage, only for the deal to fall apart later. Parliament has allowed for that possibility. If the contract is later rescinded or annulled, or otherwise is not brought into effect, the SDLT charged because of substantial performance can be repaid to the extent that the transaction has fallen away.

What the official source says

The HMRC manual states that where a contract has been charged to SDLT because it was substantially performed, and the contract is later rescinded or annulled to any extent, or for any other reason is not brought into effect, the SDLT paid on that basis should be repaid to that extent.

The manual also states that the repayment must be claimed by amending the land transaction return made for that contract, under paragraph 6 of Schedule 10 to Finance Act 2003.

The important features of the rule are:

• it applies only where SDLT was charged because the contract had been substantially performed;
• it applies where the contract is later undone, cancelled, or otherwise not implemented;
• repayment is available only to the extent the contract has been rescinded, annulled, or not brought into effect; and
• the taxpayer must claim the repayment by amending the original return.

What this means in practice

If SDLT was paid early because the buyer took possession or otherwise substantially performed the contract, but the transaction later collapses, the buyer may not have to bear SDLT on a deal that never ultimately happened in full.

The phrase “to that extent” is important. It shows that the repayment is not necessarily all-or-nothing. If the contract is only partly undone, or only partly not brought into effect, the repayment may be limited to the part that has fallen away.

In practical terms, the starting questions are:

• Was SDLT originally charged because of substantial performance?
• What happened later to the contract?
• Was it fully cancelled, partly cancelled, annulled, or simply never completed?
• How much of the original charge now no longer reflects a transaction that was actually carried through?

The rule is a correction mechanism. It is designed to reverse SDLT that became payable on an assumed outcome where that outcome does not ultimately happen.

How to analyse it

A sensible way to approach the issue is as follows.

• Identify why SDLT was charged. This rule is specifically about tax charged because the contract was substantially performed. It is not a general repayment rule for every failed property transaction.
• Establish what later happened to the contract. The source refers to rescission, annulment, or the contract otherwise not being brought into effect.
• Decide whether the failure was total or partial. The legislation and manual both contemplate that only part of the transaction may have fallen away.
• Match the later outcome to the amount of SDLT originally paid. The repayment should reflect the extent to which the contract was not ultimately effective.
• Check the procedural step. The claim is made by amending the original land transaction return, not by treating the matter as if no return had ever been needed.

This analysis is especially important where events after substantial performance are messy rather than clean. For example, the parties may renegotiate, release only part of the land, or unwind some but not all of the original bargain.

Example

Illustration: A buyer enters into a contract to buy land and takes possession before completion. That substantial performance triggers an SDLT charge, and a return is filed. Later, the contract is cancelled and the transfer never completes. In that situation, the SDLT paid because the contract had been substantially performed may be repayable, provided the buyer claims by amending the original return.

Illustration: If instead only part of the arrangement is unwound and part still goes ahead, the repayment may only be available for the part that was rescinded or not brought into effect.

Why this can be difficult in practice

The source material is short, but real cases may be more complicated than the wording suggests.

First, it may not always be obvious whether what happened later amounts to rescission, annulment, or simply a variation of the original contract. A revised deal is not necessarily the same as a cancelled deal.

Second, the phrase “to that extent” can require a careful factual and legal analysis. If only part of the contract has failed, working out the correct amount of repayment may not be straightforward.

Third, this rule depends on SDLT having been charged because of substantial performance in the first place. If the original charge arose on some other basis, this particular provision may not be the correct route to repayment.

Finally, the source makes clear that the repayment must be claimed by amendment of the original return. That means procedure matters as well as substance.

Key takeaways

• If SDLT was charged because a contract was substantially performed, and the contract is later cancelled or not carried through, a repayment may be due.
• The repayment is available only to the extent the contract has been rescinded, annulled, or otherwise not brought into effect.
• The repayment is not automatic; it must be claimed by amending the original SDLT return.

This page was last updated on 24 March 2026

Useful article? You may find it helpful to read the original guidance here: Guidance on SDLT Repayment for Annulled or Rescinded Contracts Under FA

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