HM Revenue & Customs · Self Assessment
Self Assessment calendar.
Map the paper, online, balancing-payment and payments-on-account deadlines for a UK tax year.
Tax year
Your dates
Official source and limits
HMRC’s usual dates are October 31 for paper returns, January 31 for online returns and balancing payments, and July 31 for the second payment on account. If a deadline falls on a weekend or bank holiday, the tool shows the preceding working day; Faster Payments can follow different timing.
Check GOV.UK Self Assessment payment deadlines. Verified September 29, 2026.
For other UK benefit calendars, see State Pension payment dates.