Guide to Claiming Group Relief in Stamp Duty Land Tax (SDLT)

How to claim SDLT group relief

SDLT group relief is claimed in the SDLT return itself, usually by entering relief code 12 on form SDLT1 or its electronic equivalent. HMRC does not usually require supporting documents or a separate claim letter before issuing the SDLT5 certificate, so registration can go ahead, but HMRC may still check the claim later and assess extra tax or penalties if the relief was wrongly claimed.

• Group relief is claimed through the SDLT return, not by sending documents with the claim.
• If the return is complete, HMRC will normally issue the SDLT5 certificate without waiting to review the relief claim.
• The system works on a self-assessment basis, so the companies must decide whether the relief conditions are actually met.
• The SDLT5 certificate is not proof that HMRC has approved the claim; it only allows Land Registry registration to proceed.
• Businesses should keep clear records of the group structure, transaction facts and reasons why the relief was claimed in case HMRC checks later.

Scroll down for the full analysis.

How to claim SDLT group relief

This page explains how an SDLT group relief claim is made and what HMRC’s process means in practice. The source material is short, but the practical point is important: group relief is claimed through the SDLT return itself, it is dealt with on a self-assessment basis, and HMRC may check the claim later rather than before the transaction is registered.

What this rule is about

Group relief can reduce or eliminate SDLT on certain land transactions between companies in the same group. The source material is not setting out the conditions for the relief. Instead, it explains the procedure for claiming it.

The key change from old Stamp Duty practice is that SDLT works through a return-based system. That affects how relief is claimed, when HMRC issues the certificate needed for registration, and who carries the risk if the claim is wrong.

What the official source says

The official material says that, unlike old Stamp Duty practice, documents do not need to be submitted with a group relief claim.

The claim is made in the SDLT return, using form SDLT1 or its electronic equivalent, and using code 12.

If the land transaction return is complete, HMRC will issue the SDLT5 certificate that allows title to be registered. HMRC will not hold back that certificate simply because it may later want to enquire into the return or into the group relief claim.

The claim is therefore made on a self-assessment basis. HMRC describes this as “process now/check later”. The source also says that HMRC does not require the separate letter of claim that applied in Stamp Duty practice.

But that does not mean the claim is risk-free. The companies involved must decide for themselves whether the relief is available. If too little tax is declared, HMRC can assess the underpaid SDLT and may seek penalties where the error resulted from negligence or fraud.

What this means in practice

In practical terms, a company claiming group relief does not send HMRC a bundle of supporting documents at the point of filing simply to obtain the relief. The relief is claimed in the return.

That makes the filing process quicker, and it means registration of the transfer should not be delayed just because HMRC has questions about the claim.

However, the absence of an upfront clearance process shifts the burden onto the taxpayer. The company, and usually its advisers and conveyancers, need to be satisfied before filing that the legal conditions for group relief are actually met.

This matters because the SDLT5 certificate is not evidence that HMRC has approved the relief. It only shows that a complete return has been processed so that registration can proceed. HMRC can still open an enquiry or make an assessment later if it considers the relief was wrongly claimed.

How to analyse it

When dealing with a possible group relief claim, a sensible approach is to separate the procedural question from the substantive one.

First, ask the procedural question: has the claim been made correctly in the SDLT return? The source material indicates that the claim should be made on form SDLT1, or the electronic equivalent, using code 12.

Second, ask the substantive question: do the facts actually satisfy the legal conditions for group relief? The source page does not set those conditions out, so they need to be checked separately against the legislation and any relevant guidance.

Third, ask what evidence exists to support the claim if HMRC checks it later. Even though documents are not submitted with the return, it is still important to keep records showing why the relief was considered available.

Fourth, ask whether anyone is treating the issue as if HMRC has pre-approved it. The source material points the other way. HMRC may issue the SDLT5 certificate and still challenge the claim later.

A practical checklist is:

• Has the SDLT return been completed in full?
• Has the group relief claim been entered using the correct relief code?
• Have the legal conditions for group relief been checked, rather than assumed?
• Is there a clear record of the group structure and the transaction facts?
• Would the file still make sense if HMRC reviewed it after completion and registration?

Example

A parent company transfers land to another company in what the parties believe is the same corporate group. The buyer files the SDLT return and claims group relief using the correct code. HMRC issues the SDLT5 certificate, so the transfer can be registered at the Land Registry.

That does not mean HMRC has confirmed the relief is due. If HMRC later reviews the return and concludes the companies were not in the required relationship for relief, it may assess the SDLT that should have been paid. If the mistake arose from careless or dishonest filing, penalties may also be considered.

Why this can be difficult in practice

The main difficulty is that the SDLT filing system is procedurally simple, but the underlying relief can be legally technical. A return can be processed and registration can go ahead even where the relief position is uncertain or wrong.

That can create a false sense of security. Some taxpayers assume that because the certificate was issued and HMRC did not ask for documents at the outset, the claim has effectively been accepted. The source material makes clear that this is not how the system works.

Another practical difficulty is that the source refers to penalties for errors caused by negligence or fraud. In modern compliance terms, questions often arise about the standard of care taken when the return was prepared. That will depend heavily on the facts, the complexity of the transaction, and what checks were carried out before the claim was made.

Key takeaways

• SDLT group relief is claimed in the SDLT return itself, not by sending claim documents with the return.
• HMRC can issue the SDLT5 certificate and allow registration before it has checked whether the relief claim is correct.
• The claim is self-assessed, so the companies involved must be able to justify the relief if HMRC asks about it later.

This page was last updated on 24 March 2026

Useful article? You may find it helpful to read the original guidance here: Guide to Claiming Group Relief in Stamp Duty Land Tax (SDLT)

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