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Processing week 53 for your payroll

A week 53 occurs when you pay date falls on April 5th. This scenario will occur if you pay your employees weekly, 2 weekly or 4 weekly. You will not have a week 53 if you pay your employees monthly.

In the 2018/2019 tax year, tax week 53 is Friday 5 April 2019. You have a week 53 if the following applies:


Your normal pay day is a Friday and

  • You last processed your weekly paid employees on Friday 29 March 2019
  • You last processed your fortnightly paid employees on Friday 22 March 2019
  • You last processed your four weekly paid employees on Friday 8 March 2019

In each of these instances, you’re next due to process the employees on 5 April 2019, week 53.


These are the only scenarios where you must process a week 53, the next processing date for all other pay dates falls into the 2019/2020 tax year.


How is tax and NI is calculated when you process a week 53?

Tax is calculated on a week1/ month1 tax basis. This will ignore previous periods where tax might be have been calculated cumulative basis. This means it will ignore the year to date amounts and tax the employee(s) are what they earn in this period only.

National Insurance is calculated the same as it is done in every other period. National Insurance is calculated based on what the employees earns in a period, it does not calculate based on the year to date amounts.If you have any directors in the payroll, please note their calculation method is annual so they national insurance will be recalculated automatically when you reach period 52.

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