Week 53: The Extra Pay Week Puzzle!

The 2023/24 tax year might be over, but for some employees, there’s one more quirk to navigate: Week 53

What is a Week 53?

A Week 53 arises when the standard tax year, which typically consist of 52 weeks, doesn’t fully align with the actual number of weeks in the year. This can occur due to various factors such as a leap year, the specific day of the week on which the tax year starts or the specific day of the week when employees receive their pay (pay day).

Week 53 can also affect 2-weekly and 4-weekly paid employees in certain years as they may receive 27 (2-weekly) payments instead of the usual 26, or 14 (4-weekly) payments instead of the usual 13.

Why is it Confusing?

The confusion arises because by week 52, employees would have used up their annual tax-free allowance. However, to maintain consistent take-home pay, payroll systems allocate an additional tax-free allowance amount in week 53. This can lead to employees underpaying tax for the year.

How Does HMRC Handle This?

HMRC acknowledges this anomaly and instructs employers to process week 53 as if it were week 1. This means allocating a portion of the tax-free allowance again. Later, HMRC might:

• Issue a P800 tax calculation letter to the employee, indicating a tax underpayment.
• Adjust the employee’s tax code in the following year to recover the excess tax-free allowance provided in week 53.

What to Do as an Employer

• Be prepared to explain week 53 and its implications to employees who receive a P800.
• Reassure employees that their payroll and tax calculations are correct according to HMRC guidelines.
• Payroll software typically handles week 53 automatically, minimising the need for manual intervention.

What to Do as an Employee

• If you receive a P800 mentioning underpaid tax due to week 53, understand that it’s a technical adjustment.
• Your employer can explain the situation further if needed.

Key Takeaways

• Week 53 is a quirky anomaly in payroll for weekly/fortnightly/four-weekly employees in certain years.
• It can lead to temporary tax underpayment, which HMRC adjusts later.