A pay change starts with a business decision, but it finishes in several places: the employee’s payslip, your bank account, payroll reports and the accounts. If those places tell different stories, even a well-intended reward can create confusion. Planning bonuses and overtime payroll means deciding what is being paid, when it belongs in the pay run and who has approved it before the payroll cut-off.
In this article
- Record the approved pay change
- Confirm when it takes effect
- Check deductions and total employment cost
- Review the updated payslip
The first question is whether the figure discussed is gross pay or take-home pay. A promise about net pay needs an individual calculation; it should never be treated as interchangeable with a gross bonus. Deductions depend on the employee’s circumstances and the payroll information used.
Give each change a precise instruction
Avoid instructions such as “increase Alex’s pay this month”. They leave open whether the change is permanent, backdated or a one-off. A useful instruction identifies the employee, the old and new rate, the effective date, the pay period and the approver. Explain how to handle a change beginning part-way through a period, using the employment agreement and your established calculation method.
| Change | Information payroll needs | Business check |
|---|---|---|
| Permanent pay rise | New gross rate and effective date | Updated recurring budget and written approval |
| Backdated rise | Start date, periods affected and amounts already paid | Reconcile the arrears calculation |
| Cash bonus | Gross amount, payment date and employee list | Confirm approval and funding |
| Overtime | Approved hours, dates and agreed rate | Check hours against the source timesheet |
| Commission | Calculation, period and adjustments | Resolve returns or disputed sales before approval |
Keep permanent pay separate from variable payments in your instruction sheet. Otherwise a bonus can accidentally become a recurring salary item, or a temporary overtime rate can overwrite the contractual rate.
Understand what changes the payroll calculation
Cash bonuses are earnings: HMRC says they should be added to other earnings and subjected to PAYE and Class 1 National Insurance through payroll. Non-cash rewards have rules depending on what is provided, so a voucher, gift or asset needs its own review. See HMRC’s bonus reporting guidance.
Use current payroll software and review the calculation rather than predicting deductions from the employee’s usual payslip. A higher payment can change tax, National Insurance, student loan deductions and pension calculations. Check the pension scheme’s definition of pensionable pay rather than assuming every scheme treats every bonus identically.
Overtime also requires a clear hours record. Check whether the extra hours affect other employment calculations, including holiday pay, with appropriate advice. A payroll calculation cannot settle an uncertain contractual entitlement. If managers disagree about whether overtime was authorised, resolve that before sending the final instruction.
Budget the employer cost, not just the reward
Gross pay is one component of the decision. Your forecast should also consider employer National Insurance where applicable, employer pension contributions and any associated cash commitments. For a permanent rise, compare the annual effect with the immediate month’s effect: a small partial-period payment can disguise a much larger ongoing cost.
Separate the payment timetable into employee wages, payments to HMRC and pension payments. They may leave the bank on different dates. A profitable month does not automatically provide sufficient cash for all three, particularly when customer receipts are late.
Management accounts support can help put staff costs alongside sales and margins. Where a wider hiring or reward decision needs scenario planning, discuss the scope of outsourced CFO support.
An illustrative example: a rise and a busy weekend
Imagine a small design business gives an employee a permanent rise starting halfway through the month and separately approves overtime for a weekend project. This is an illustration, not a client case study.
The owner sends two clearly labelled instructions. The first shows the salary change and the agreed partial-month calculation. The second lists approved overtime hours and the applicable rate. The reviewer compares both with the employee’s previous pay and the signed approval, then checks the new recurring salary is correct for the following month.
The owner also updates the forecast for the permanent rise. They do not carry the one-off overtime into the next month’s standard staffing budget. This makes the payroll accurate and the management information more useful.
Use a short approval routine
Before releasing the pay run, ask someone with authority to review the change report. Compare this month’s gross pay with last month’s and explain every significant movement. Review new recurring items separately from one-offs, and confirm the employee payment file agrees with approved net pay.
Keep evidence of approval with the calculation. If a late instruction arrives after payroll has been finalised, agree how it will be processed and reported; do not send an informal bank top-up without involving payroll. HMRC normally requires the Full Payment Submission on or before payday, with specific reporting rules for exceptional circumstances. See the FPS guidance.
Questions to settle before making an offer
Can we tell an employee their exact take-home bonus? Only after an individual calculation using the appropriate payroll details. Describe an uncalculated offer as gross pay.
Can a backdated rise wait until the next routine run? Agree the payment timing with the employee and payroll contact, including the reporting treatment. Do not assume the processing cut-off changes contractual obligations.
Who approves overtime? Name a responsible manager and a deputy. Payroll needs approved facts, not an unresolved conversation between departments.
If pay changes are becoming difficult to coordinate, enquire about EPOS Accountancy payroll support. Bring your pay frequency, employee numbers and current approval process so the responsibilities and deliverables can be agreed. For fee information, use the pricing page.