Overpayment Relief Exclusion: No Claims After HMRC Court Action Initiated

When SDLT overpayment relief is blocked by HMRC court action

If HMRC starts court proceedings to recover Stamp Duty Land Tax under an assessment or determination, overpayment relief is limited. In practice, a claim may still be possible before the court gives judgment or before the case is settled, if the usual conditions are met, including the four-year time limit. Once the amount has been fixed by a court judgment or agreed settlement, overpayment relief cannot be used to reopen it.

• Overpayment relief is not a general fallback if HMRC has already taken formal court action to recover the tax.
• The rule is meant to give finality where a tax debt has reached the court recovery stage.
• A claim may still be possible before judgment or settlement, but only if it is made in time and all normal conditions are satisfied.
• Key practical questions are whether HMRC has started proceedings, what stage they have reached, and whether the amount has already been fixed by the court process.
• Taxpayers are expected to challenge the amount earlier, for example through self-assessment, amendment or appeal, rather than waiting until after recovery proceedings are finalised.

Scroll down for the full analysis.

When overpayment relief is blocked because HMRC has started court proceedings

This page explains a specific limit on Stamp Duty Land Tax overpayment relief. In simple terms, if HMRC has already taken court action to recover tax due under an assessment or determination, a person cannot then use overpayment relief to try to reclaim that amount. The rule is designed to preserve finality once recovery proceedings have reached the court stage.

What this rule is about

Overpayment relief is a route for claiming back tax that was not actually due, subject to statutory conditions and exclusions. The source material deals with one of those exclusions, sometimes referred to as “Case F”.

The issue is timing. A taxpayer may believe that an assessment or determination is wrong, or that too much tax has been paid or demanded. But the law does not allow overpayment relief to remain open indefinitely once HMRC has had to move into formal debt recovery through the courts.

This reflects a broader principle also used in income tax: once HMRC has taken recovery proceedings and the amount has been determined by the court, or settled in that context, the position should generally be treated as final.

What the official source says

The official material says that a person cannot claim overpayment relief if HMRC has already taken court action to recover amounts due under an assessment or determination.

It also explains the policy behind the rule. Before HMRC can enforce a tax debt, there must already be an assessment or other determination of the amount due. The taxpayer will already have had an opportunity either to self-assess correctly or to appeal HMRC’s assessment. Before issuing recovery proceedings, HMRC will also have tried to contact the taxpayer to seek payment.

According to the ministerial explanation quoted in the manual, the taxpayer can still make an overpayment relief claim before judgment is given, or before the taxpayer reaches an agreement with HMRC to settle the proceedings, provided the normal conditions are met, including the four-year time limit. But if HMRC has been forced to take legal proceedings, any amount determined by the court, or agreed in settlement of those proceedings, should remain final.

What this means in practice

The practical point is that overpayment relief is not a way to reopen a tax debt after HMRC has already brought court proceedings to recover it.

If a person thinks the amount assessed is wrong, they need to act before the matter reaches that stage. The source material indicates that there is still an opportunity to make an overpayment relief claim after HMRC has started chasing the debt and even after proceedings have begun, but only up to a point. Once judgment has been given, or the proceedings have been settled by agreement, the exclusion applies.

This matters because taxpayers sometimes assume that overpayment relief is a general fallback remedy whenever an assessment is believed to be excessive. The official position here is narrower. Overpayment relief does not override the finality of court recovery proceedings.

For conveyancers and advisers, the key practical question is whether the matter is still at the stage of assessment, correspondence, or pre-judgment dispute, or whether it has already crystallised into court-determined or court-settled debt recovery.

How to analyse it

A sensible way to analyse this issue is to ask the following questions:

• Is the person trying to use overpayment relief in relation to an amount said to be due under an assessment or determination?
• Has HMRC already taken court action to recover that amount?
• If yes, what stage have those proceedings reached?
• Has the court already given judgment?
• Has the taxpayer already reached an agreement with HMRC to settle the proceedings?
• If neither of those has happened yet, is an overpayment relief claim still within the normal statutory time limit, including the four-year limit referred to in the source?
• Did the taxpayer previously have an opportunity to challenge the amount through self-assessment, amendment, or appeal routes?

The source material suggests an important distinction between proceedings having been started and proceedings having become final. It indicates that a claim may still be possible before judgment or settlement, but not after the amount has effectively been fixed by the court process.

Example

Illustration: HMRC issues an SDLT assessment. The taxpayer does not pay, and HMRC eventually starts court proceedings to recover the assessed amount. Before the court gives judgment, the taxpayer realises there may have been an overpayment and considers an overpayment relief claim. On the basis of the source material, that claim may still be possible if the other conditions are met, including the time limit.

But if the court then gives judgment for the amount due, or the taxpayer agrees with HMRC to settle the proceedings for a stated amount, the source indicates that the amount should then be treated as final. At that stage, overpayment relief is no longer available for that amount.

Why this can be difficult in practice

The manual states the rule in broad terms, but timing can be delicate in real cases.

One difficulty is identifying exactly when HMRC has “taken court action” and whether the particular amount in question is the same amount being pursued in those proceedings.

Another is the relationship between the opening statement and the ministerial explanation. The opening statement says a person cannot claim if HMRC has already taken court action. The quoted explanation then adds that a claim may still be made before judgment or settlement. Read together, the practical message appears to be that the exclusion is concerned with preserving finality once the proceedings have resulted in a court determination or agreed settlement, rather than cutting off all claims immediately at the first procedural step. But the exact application may still depend on the statutory wording and the facts.

There may also be separate issues about whether overpayment relief is excluded for other reasons, or whether another route, such as appeal, should have been used earlier. The source page only addresses this particular exclusion.

Key takeaways

• Overpayment relief cannot be used to reopen an amount that has been fixed through HMRC court recovery proceedings.
• According to the official explanation, a claim may still be possible before judgment or before settlement of those proceedings, if the other conditions are met.
• The timing of the claim, the stage of the proceedings, and the four-year limit are all critical.

This page was last updated on 24 March 2026

Useful article? You may find it helpful to read the original guidance here: Overpayment Relief Exclusion: No Claims After HMRC Court Action Initiated

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