Most frequent questions on Tax years, filing deadline and payment deadline
This is a period for which you calculate your taxable income and pay tax thereon.
The tax year for individuals starts on 6th April in the UK
The tax year for individuals ends on 5th April in the UK
Income tax filing deadline is 31st October for paper filings & 31st January for online submission
Income tax payment deadline is 31st January. First payment on account (next year advance payment) deadline is also 31st January and 2nd payment on account deadline is 31st July.