Key dates
Every date that matters, with a reminder you control
HMRC does not remind you, and the penalty for a late return is £100 on the first day. These are the dates for each tax year, from the day it starts to the last payment on account. Put them in the calendar you already use and it will remind you a week before and the day before. Nothing is stored by us and no account is needed.
How the reminders work
Your calendar, not ours
The button downloads a small calendar file. Open it and your phone or computer offers to add the dates to Apple Calendar, Outlook, Google Calendar or whatever you use. Each date carries two reminders.
Google Calendar in one tap
If you use Google Calendar on the web, the per-date button opens it with the event filled in. Press save and it is on every device signed in to that account.
Nothing leaves this page
The file is built in your browser from the dates below. We do not know that you downloaded it, and we cannot send you anything: the reminders come from your own calendar.
Dates by tax year
The .ics file opens in Apple Calendar, Outlook, Google Calendar and most phone calendars. Every date gets a reminder 7 days before and 1 day before.
Key dates for 2025/26
6 April 2025
Passed
Tax year 2025/26 begins
New tax codes, rates and allowances apply from today. Check the first payslip of the year against your coding notice.
5 April 2026
Passed
Tax year 2025/26 ends
The last day for anything that counts in this year: pension contributions, Gift Aid, ISA deposits, expenses. From tomorrow the figures belong to the next return.
31 May 2026
Passed
P60s due from employers and pension providers
Everyone who paid you on 5 April must give you a P60 by today. Chase it if it has not arrived; you need it for the return and for any refund claim.
6 July 2026
Passed
P11D due from your employer
If you had benefits in kind that were not put through payroll, your employer must give you a P11D by today, with the cash equivalents that go on the employment page.
5 October 2026
Register for Self Assessment
If you need to file for 2025/26 and have not filed before, register by this date so HMRC can send your UTR in time.
31 October 2026
Paper tax return deadline
Only applies if you file on paper. Online filers have until 31 January.
30 December 2026
File online by this date to pay through your tax code
If you owe less than £3,000 and have PAYE income, filing by 30 December lets HMRC collect what you owe through next year’s tax code instead of a lump sum.
31 January 2027
Online tax return deadline and payment deadline
Your 2025/26 return must be submitted and any tax owed paid by midnight. Late filing carries an automatic £100 penalty.
31 January 2027
First payment on account (if due)
Half of your estimated 2026/27 bill, paid in advance alongside the balancing payment.
31 July 2027
Second payment on account (if due)
The second half of your advance payment towards 2026/27.