What is the deadline for submitting my tax return?
The filing deadline for paper tax returns is 31 October following the end of the tax year. The filing deadline for online tax returns is 31 January following the end of the tax year. If you want to guarantee that the tax office will calculate your tax due before it is payable or you want the Inland Revenue to collect a tax underpayment of up to £2000 in a later tax year through your PAYE code, then your tax return must be submitted by 31st October following the end of the tax year.
