Sign-on bonus: estimating take-home pay

A sign-on bonus is often a one-off payment that can change your marginal deductions for that payslip. This page explains scenario patterns for 2026.

Open the calculator Bonus tax explainer

Why it looks different

One-off payments can cross PAYE and USC thresholds in one period.
Payroll timing can affect the short-term result.
The annual impact can be clearer than the monthly payslip view.

How to estimate

Run base salary in annual view.
Add the bonus as extra income in the same year.
Compare the delta in net pay and deductions.

FAQ

How is a sign-on bonus taxed in Ireland?

A sign-on bonus is typically treated as taxable pay and can be charged PAYE, USC and PRSI. The exact outcome depends on payroll timing and your circumstances.

Why does the payslip deduction look so high on a sign-on bonus?

A large one-off payment can push you into higher marginal bands for that payslip. When multiple deductions apply together, the combined marginal deduction can look high.

How can I estimate the take-home value of a sign-on bonus?

Model a base salary scenario and a salary-plus-bonus scenario, then compare the change in net pay and deductions. Use the annual view to understand the budget impact.

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