How to manage payroll when employees leave your business

When an employee leaves your business, payroll needs to be handled carefully. It is not just a case of removing their name from the next pay run. You need to calculate their final pay, deal with holiday entitlement, report the correct details to HMRC, issue the right documents and keep accurate records.

For a growing business, leavers can quickly make payroll more complicated. One resignation may be simple. Several leavers across different pay dates, departments or contract types can create mistakes if your process is not clear. Working with Stockport payroll accountants can help you manage employee leavers properly and reduce the risk of errors.

Payroll matters because it affects your people, your cash flow and your compliance position. ONS and HMRC data showed 30.3 million payrolled employees in the UK in May 2026, which highlights how central PAYE reporting is to the UK employment system.

Start with the employee’s leaving date

The first step is to confirm the employee’s official leaving date. This should normally be the final day of employment, not simply the day they handed in their notice or the day they last worked if those dates are different.

You should pass this date to whoever runs payroll as early as possible. Payroll needs it to calculate final pay, prepare the leaver details and report the correct information to HMRC. If the leaving date is wrong, the P45 and HMRC record may also be wrong, which can cause problems for the employee’s next job or future tax position.

You should also check whether the employee is leaving because of resignation, dismissal, redundancy, retirement, the end of a fixed-term contract or another reason. The payroll calculation may differ depending on what they are owed.

Calculate final pay carefully

Final pay can include more than ordinary wages or salary. Before you run payroll, you should check all amounts due and make sure nothing is missed.

Your final payroll calculation may need to include:

• Salary or wages up to the leaving date
• Outstanding overtime
• Commission or bonuses due under the contract
• Accrued but untaken holiday pay
• Notice pay, where applicable
• Statutory redundancy pay, where applicable
• Statutory payments such as sick pay or parental pay, where relevant
• Approved deductions, such as season ticket loans or training costs, if permitted

This is where mistakes often happen. A leaver may have worked extra hours, taken more holiday than they accrued, or be due a final commission payment after their leaving date. If your records are not up to date, payroll can easily be wrong.

Check holiday entitlement before finalising pay

Holiday pay is one of the most common areas of confusion when someone leaves. If an employee has built up statutory annual leave but has not taken it by the time they leave, you usually need to pay them for the unused entitlement. Acas guidance says employers must pay workers in lieu for untaken statutory holiday entitlement they have accrued when they leave.

You should check how much of the holiday year has passed, how much leave the employee has accrued and how much they have already taken. If they have taken more holiday than they accrued, you should only make a deduction if the contract allows it and the calculation is clear.

Holiday calculations can become more difficult for part-time, irregular-hours or part-year workers. In these cases, it is worth checking the figures carefully before final pay is processed. A small calculation error can lead to an underpayment or an awkward dispute after the employee has left.

Report the leaver correctly to HMRC

Under Real Time Information rules, employers must usually send a Full Payment Submission to HMRC on or before employees are paid. This includes payroll details such as pay, tax, National Insurance and relevant employee information.

When an employee leaves, the leaving details are normally included in the payroll submission. HMRC guidance also confirms that employers must give the departing employee a P45.

You should avoid submitting leaver details too early if further payments are still due. For example, if you know there will be another payment after the employee’s final working day, such as commission or a statutory payment, you need to follow the correct payroll treatment. GOV.UK guidance explains that employers may need to use the employee’s usual tax code for statutory payments and give the P45 after the final payment, recording the final payment date as the leaving date.

Issue the P45 promptly

A P45 shows the employee’s pay and tax details for the tax year up to the point they leave. The employee may need it for their next employer, for a benefits claim or for their own tax records.

You should issue the P45 once the final payroll position is clear. If you issue it too soon and then make another payment, it can create additional payroll complications. If you issue it late, the employee may struggle to give accurate information to their next employer.

Having a standard leaver checklist helps. This ensures payroll, HR and management all know when the P45 should be produced and who is responsible for sending it.

Handle deductions with care

Final pay deductions need to be managed carefully. You may need to recover money for staff loans, training costs, excess holiday, damaged equipment or unreturned property. However, you should not make deductions simply because you feel the business is owed money.

You should check the employment contract, written agreements and payroll records before making any deduction. If a deduction is not authorised or is calculated incorrectly, it can lead to a dispute.

It is also sensible to explain deductions clearly on the payslip. Employees are more likely to challenge final pay when they do not understand how the figure was reached.

Think about pensions and benefits

When an employee leaves, payroll also needs to deal with pension contributions and any benefits connected to employment. You may need to notify your workplace pension provider that the employee has left, stop future contributions and make sure the final contribution is correct.

You should also review benefits such as private medical cover, company cars, mobile phones or salary sacrifice arrangements. Some benefits may need to stop on the leaving date, while others may affect payroll reporting or year-end forms.

If benefits are not updated properly, the employee’s tax position may be wrong and your payroll records may not match your wider accounting records.

Keep records after the employee leaves

Once the employee has left, you should keep payroll records in an organised way. This includes payslips, PAYE records, P45 details, holiday calculations, deductions, pension information and correspondence about final pay.

Good records protect your business if a former employee questions their final pay. They also make it easier to correct mistakes if something is discovered later. GOV.UK guidance confirms that payroll errors can include pay, deductions, payment dates, start dates, leaving dates and employee information.

For growing businesses, a consistent record-keeping process is essential. If every leaver is handled differently, payroll becomes harder to check and easier to get wrong.

Use a payroll leaver checklist

A simple checklist can make the leaver process much smoother. It should cover the key steps from resignation or notice through to final payment and record storage.

Your checklist should include:

• Confirm the employee’s official leaving date
• Check contractual notice and final working arrangements
• Calculate salary or wages up to the leaving date
• Review overtime, commission and bonuses
• Calculate accrued holiday pay
• Check deductions and supporting agreements
• Process pension contributions correctly
• Submit the leaver details to HMRC
• Issue the final payslip and P45
• Store payroll records securely

This kind of process reduces last-minute pressure and helps you treat employees consistently.

How U&W Chartered Accountants can help

Managing payroll when employees leave is not always straightforward. You need accurate calculations, timely HMRC reporting and clear records. If your business is growing, a reliable payroll process can save time, reduce disputes and help you stay compliant.

At U&W, we help businesses manage payroll with care, from regular pay runs to employee leavers, PAYE submissions, payslips and payroll records. Whether you are dealing with your first leaver or managing a larger team, the right support can make the process easier.

Need help managing payroll for employee leavers? Contact U&W today to discuss how we can support your payroll process and help your business stay organised, accurate and compliant.