Documents for Business

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Introduction to this document

Overpayment relief claim

Where you discover a mistake in your tax return which resulted in you paying or owing more tax than was properly payable, and it's too late to correct under self-assessment rules, you can make an overpayment relief claim. The claim must include the right information or HMRC will reject it. 

Letter to HMRC

This claim needs to be made in writing and include certain information (or HMRC will reject it).

Our draft Overpayment Relief Claim guides you through all the information you must include to ensure that your claim is valid. 

Time limit

An overpayment claim may not be made more than four years after the end of the relevant tax year.