Bonus tax calculator
2026 and 2027 rates
See what a bonus or overtime payment adds to your take-home pay, and how the payslip in the month it is paid can look.
This is an estimate for general information, based on the rates and rules described on this page. It is not financial, tax or legal advice and does not take account of your full circumstances. Check your own position with Revenue or a qualified tax adviser before making a decision. Terms of use.

Worked example
Single, €35,000 salary, €5,000 bonus paid in March 2026. Over the year the bonus adds €1,000.00 income tax, €150.00 USC and €211.87 PRSI. You keep €3,638.13, and 27.2% goes in deductions. Income of €40,000 stays inside the €44,000 band, so none of it is taxed at 40%.
The March payslip tells a different story. By March only three twelfths of the band, €11,000, has built up, but pay to date is €13,750. The difference is taxed at 40%, so March takes €1,910.00 off the bonus (38.2%). The extra comes back through lower tax from April to December. Paid in December, the payslip takes €1,367.50.
How bonus tax is calculated
A bonus is added to your pay and taxed in the same way. The calculator works out your income tax, USC and PRSI for the year with and without the bonus, using the same calculation as the take-home pay calculator. The difference is what the bonus costs you in deductions, and the rest is what you keep.
The cumulative basis
Payroll gives you one twelfth of your yearly tax credits and standard rate band each month (one fifty-second each week), and keeps a running total. In the month of the bonus, tax due to date is worked out on all pay to date against the band and credits built up so far, less the tax already paid. USC works the same way with its own bands: income above €70,044 a year is charged at 8%, and that cut-off also builds up month by month. PRSI is charged on each pay period by itself, so a bonus month has PRSI on the whole of that month's pay.
Overtime
Overtime pay is the hours times your basic hourly rate times the overtime multiplier. If you leave the hourly rate empty, the calculator uses your salary divided by 52 weeks of 39 hours. If you work overtime every month, enter how many times a year; the payslip view shows one month with overtime.
What is not included
- Pension contributions, benefit in kind and other credits, such as the rent tax credit. These change your band or credits but not the way a bonus is taxed.
- Weekly or fortnightly pay: the payslip view assumes monthly pay.
- A second job, or a bonus paid after you leave a job (taxed through your P45 figures).
Sources
Rates last checked 10 October 2026. Every figure is listed on rates and sources.
Figures marked as announced come from Budget 2027 and are not law until the Finance Act or Social Welfare Act that brings them in is passed.