Can you claim a tax rebate after someone dies? Income tax and the P800 explained (UK)
18 August 2026 · Inherit Vault
Death doesn't settle someone's tax affairs, it just moves the deadline. HMRC still needs a final reckoning of what was earned and paid in the tax year someone died, and that reckoning can go either way.
HMRC needs to be told separately from everyone else
Telling the bank, the pension provider and the utility companies doesn't automatically tell HMRC. The executor, or the "Tell Us Once" service, which does notify HMRC among other government departments in one go, needs to report the death directly, which triggers a review of the deceased's tax position for that final, partial tax year.
A rebate is common, not exceptional
Income tax is calculated assuming a full year of earnings and a full year's personal allowance. Someone who dies partway through the tax year has often paid tax as if they were going to keep earning for the rest of it, which means the personal allowance for those unused months frequently produces a genuine rebate once HMRC recalculates based on the actual, shorter year.
The P800 is the form that confirms it
HMRC issues a P800 calculation after reviewing the final year's tax position, showing either a refund owed to the estate or, less often, additional tax due. It isn't sent automatically the moment someone dies, it follows the notification and the review, which is why families sometimes wait months without realising a calculation, and potentially a cheque, is coming.
Refunds go to the estate, not directly to family
Any rebate is paid to the estate, not to a spouse or child personally, and gets distributed through probate like any other asset, under the will or the intestacy rules. It's easy to overlook precisely because it doesn't feel like "the estate", it feels like paperwork, right up until a cheque for several hundred pounds arrives addressed to someone who died months earlier.
A rebate nobody expects doesn't get chased. Knowing there's a final tax position to settle, and that it's often a refund rather than a bill, is usually the only thing standing between an executor and money the estate is simply owed.
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