Reverse Tax Calculator Ireland 2026
Enter your target take-home pay — monthly or annual — and find out what gross salary you need to ask for.
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Enter Your Target Take-Home Pay
Disclaimer: This calculator provides estimates only and does not constitute professional tax advice. Figures are based on Revenue.ie guidelines for tax year 2026. Individual circumstances vary — always consult a qualified tax advisor for advice specific to your situation.
How Does This Work?
This calculator works backwards from your desired take-home pay to the gross salary you need to negotiate. It uses the 2026 Irish tax rates (income tax, USC and PRSI) and assumes standard tax credits for a single PAYE worker.
Use the full calculator above if you want to factor in pension contributions, rent tax credit, home carer credit, or a medical card — these will reduce the gross salary you need.
Why You Cannot Just Reverse the Tax Formula
Working out take-home pay from a gross salary is a matter of applying income tax bands, USC bands and PRSI in order. Working the other way round, from the net figure you want to the gross salary that produces it, is a genuinely harder problem. Each deduction depends on which band your income falls into, and the bands themselves depend on the gross figure you are trying to find.
There is no algebraic shortcut that solves this in one step, because income tax, USC and PRSI are calculated independently and none of them is a simple percentage of the others. Instead, this calculator uses a search-and-check method: it tests a gross salary, runs the full tax calculation on it, checks how close the resulting net pay is to your target, and adjusts. It repeats this dozens of times until the gap is a fraction of a euro, which is why the tool exists rather than a formula.
Worked Example: €3,000 a Month in Hand
Say a single PAYE employee wants to take home €3,000 a month, which is €36,000 a year. Here is the gross salary required and the full breakdown of what comes off it.
| Gross salary required | €43,314 |
| Income tax | – €4,662.80 |
| USC | – €832.24 |
| PRSI | – €1,819.19 |
| Actual net pay | €35,999.77 / year (€2,999.98 / month) |
The actual net pay lands a few cents short of the €3,000 target, which is the bisection search stopping once it is close enough rather than continuing forever. Treat every result from this calculator as accurate to the nearest euro, not to the cent.
Using This for Salary Negotiation
This calculator is most useful before a conversation about pay, not after one. If you know you need a certain amount in your account each month to cover rent, a mortgage or savings goals, working out the gross figure in advance means you can ask a recruiter or employer for a specific number rather than guessing.
It is also useful when comparing job offers quoted as take-home pay, or when a contractor role is priced in net terms and you need to know the gross-equivalent salary to compare it against a PAYE offer. For the reverse direction, working out take-home pay from a known gross salary, use the PAYE tax calculator.
Frequently Asked Questions
How does the reverse tax calculator work?
It works backwards from the take-home pay you tell it you want, and searches for the gross salary that produces it. Because income tax, USC and PRSI all interact in bands and thresholds, there is no simple formula to reverse them, so the calculator repeatedly tests gross salaries and narrows in on the one that lands on your target net.
Why is the gross salary so much higher than the net pay I asked for?
Three separate deductions come off gross pay before you see it: income tax, USC and PRSI. Each one layers on top of the others, so gross has to absorb all three. In our worked example, taking home €3,000 a month required a gross salary of €43,314, a gap of over €7,314 a year.
Is the result exact?
It is accurate to the nearest euro or two. The calculator uses a binary search that repeatedly halves the gap between a low and high estimate until the resulting net pay is within a fraction of a euro of your target, so small rounding differences of a few cents are normal and expected.
Does this work for both single and married taxpayers?
Yes. Select your marital status and employment type before calculating, since both affect the tax credits and rate bands used, which changes how much gross salary is needed to reach the same net figure.
When would I use this instead of the normal PAYE calculator?
Use the standard calculator when you know your salary and want your take-home pay. Use this reverse calculator when you know what you need in hand each month, for example during a salary negotiation, a job offer, or budgeting for a mortgage, and want to work out what gross figure to ask for.
Does the calculator account for pension contributions?
This version calculates the gross salary needed with no pension contribution deducted. If you plan to contribute to a pension, you will need a somewhat higher gross salary than shown here, since pension contributions reduce your taxable income but also reduce your cash net pay before deductions are reapplied.