An extra pay run at year end (often called a week 53) happens because a year doesn't split exactly into seven-day weeks.
If you pay your employees monthly, you don't have a week 53.
You have a week 53 if your normal payday is Sunday and run a:
Read our article Extra pay run at year end (Week 53)
▼How tax and national insurance (NI) calculates in week 53
Before you process your final pay run, enter the last working day for any employees who have left your employment on or before 5 April 2026.
For the detailed steps to process leavers, read Processing leavers.
Before you can run your year end, complete your final pay runs of the 2025/2026 tax year. This in the same way your process other pay runs. Submit no later than 19 April 2026.
If you have a pension scheme set up in your payroll, there are steps you need to complete for your Pension Provider.
For further information, read the relevant article:
If you don’t see your pension provider listed, contact them to ask about their payroll year-end requirements.
There are deadlines to meet for each process related to the payroll year end. These remain the same each year.