Useful next calculations
When to use this calculator
- Before accepting a pay change, bonus, pension contribution or salary-sacrifice option.
- When you want a simple take-home estimate before payroll or filing.
- When you are approaching the £100,000 income level and want to see the personal allowance taper.
- When you need to convert between hourly, monthly and annual pay.
A worked example
These are the example figures the calculator opens with.
| Input | Value |
|---|---|
| Hourly Rate (£) | £15 |
| Normal Hours Worked | 40 |
| Overtime Hours | 10 |
| Overtime Multiplier (e.g. 1.5) | 1.5 |
For those figures the calculator returns:
- Total pay: £825.00
- Normal pay: £600.00
- Overtime pay: £225.00
- Effective OT rate: £22.50
Method & assumptions
This calculator adds normal gross pay to gross overtime pay. It multiplies your hourly rate by normal hours, then multiplies the same rate by the overtime premium and overtime hours you enter. For example, a 1.5 multiplier represents time-and-a-half.
The result is before tax, pension, payroll deductions or country-specific employment rules. It does not estimate take-home pay or decide whether a worker is legally entitled to an overtime premium. Check your contract, award or local employment rules before relying on the result.
Common mistakes
- Entering gross income when you really want take-home pay, or vice versa.
- Ignoring pension contributions, deductions or local tax rules that change the result.
- Comparing monthly and annual figures without standardising them first.
- Overlooking National Insurance or student-loan plan differences that apply to you.
What to do next
- Check the same scenario with related pay or deduction calculators.
- Keep a copy of the assumptions so you can compare the next tax year or pay period.
- If you are self-employed, compare this result with the self-employment tax calculator.
- Check whether a small pension contribution change moves take-home pay more than you expect.
Questions people ask
Overtime pay depends on your employment contract. Common rates are time-and-a-half (1.5x) or double time (2x) your normal hourly rate, though local law does not mandate overtime premium rates.