HMRC has issued a new alert urging people to check for a crucial letter which could reveal if they’re owed potentially thousands from the tax authority. However, these tax refunds aren’t made automatically so people who ignore the letter and claim instructions will miss out.

The tax authority shared on X: “Received a letter saying you have a tax refund to claim? There could be an average of £473 waiting for you.”

The letter it is referring to is the P800 Tax Calculation. These are issued to people who HMRC who have either paid too much or too little tax. It outlines exactly what went wrong in your tax calculation and how to fix it either by claiming your overpaid tax back from HMRC or paying the rest of your tax bill.

Instructions on how to do this are usually provided in the letter and

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