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wooden letters arranged on a desk to spell 'TAX RETURN' next to this is a red cup of coffee.
Updated on 6 April 2026

Who should complete a tax return

If you meet HMRC’s Self Assessment criteria for a particular tax year, HMRC will expect you to file a Self Assessment tax return for that year. However, whether or not you fall within these criteria, if HMRC ask you to file a Self Assessment tax return, then you must do so unless HMRC cancel the ...

a person holding up a white card that says 'CARER'S ALLOWANCE' in orange text
Updated on 6 April 2026

Benefits for carers

If you are a full-time carer, you may not be in paid work, due to your caring responsibilities. This does not mean that you do not have to pay tax. If you have taxable income, such as from taxable benefits (including carer's allowance and, in Scotland, carer support payment and the Scottish carer ...

a red sheet of paper with a hold in the middle, underneath is a white sheet of paper with a thick black exclamation mark on it.
Updated on 6 April 2026

PAYE: HMRC errors

If HM Revenue & Customs (HMRC) have delayed using information in their possession, and this results in you not paying enough tax under PAYE, HMRC will sometimes write off the arrears of tax under Extra-Statutory Concession A19 (also known as ESC A19). This guidance is to help you consider ...

the word 'ERROR' written on a sheet of paper, with a pencil eraser rubbing it out.
Updated on 6 April 2026

PAYE: employer errors

If HMRC calculate that you have not paid enough tax but you think that the underpayment arises because your employer or pension provider failed to operate Pay As You Earn (PAYE) correctly, you can challenge HMRC. You can request that HMRC check whether they should be asking your employer or pension ...

pad of paper on a desk next to a keyboard and mobile phone, pad of paper reads 'CHECKING YOUR TAX CALCULATION: TAX OVERPAYMENTS OR TAX UNDERPAYMENTS'
Updated on 6 April 2026

PAYE underpayments

If you receive employment income or pension income (other than the state pension), your employer or pension provider takes tax off your income throughout the tax year via Pay As You Earn (PAYE). In most cases, this means you pay the correct tax by the end of the year; but not always. You should ...

7 piles of coins, each with a dice on top, instead of showing dots to represent numbers, they show letters spelling out 'YEAR END'
Updated on 6 April 2026

PAYE at the end of the tax year

We explain about the forms you should receive if you are within Pay As You Earn (PAYE) at the end of the tax year and the processes that HMRC carry out to check your tax. 

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