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Second Job Tax Calculator Ireland: What You Really Keep (2026)
Thinking about a second job — or shocked by its first payslip? See the extra tax it actually triggers, what you keep of it, and your combined take-home. No, you're not taxed double.
| Total gross both jobs | €55,000 |
| Income tax, USC & PRSI | – €12,063 |
| Combined take-home | €42,937 |
Earning €40,000 in your main job and €15,000 in a second job, you keep about €9,350 of the second job's pay — the extra tax it triggers is €5,650 (38%), and your combined take-home is €42,937 a year. You're never taxed "double" — but you may need to split your credits in myAccount so the right amount comes out of each payslip.
The first payslip from a second job catches almost everyone off guard: 40% gone from the very first euro, and it feels like you're being punished for working more. You're not — your credits and 20% band are just parked entirely with your main job, so payroll in job two has nothing to soften the deduction. The total tax for the year works out the same either way; the fix is simply telling Revenue (myAccount → split your credits and band) so the deductions land in the right place. And if you've already overpaid, it comes back when your year is reviewed — that part surprises people too, pleasantly for once.
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How a second job is taxed in Ireland (2026)
Ireland taxes people, not jobs. Income tax and USC are calculated on your total income for the year, with one set of tax credits (€2,000 Personal + €2,000 Employee for a single worker) and one standard-rate band (€44,000 single at 20%, then 40%). A second job doesn't get its own credits or band — which is why its payslip looks so harsh by default.
Why the second payslip shows 40%
Unless you tell Revenue otherwise, your full credits and band sit with your main employment. The second employer's payroll therefore deducts the higher rate from the start. If your combined income is under the band, that's an over-deduction — fix it by splitting your credits and rate band between jobs in Revenue's myAccount. Splitting changes the timing only; your total tax for the year is identical.
PRSI is the exception — it's per job
Unlike income tax and USC, PRSI is charged on each employment separately, and a job paying €352 a week or less is exempt. So a modest second job often carries no PRSI at all — one of the few breaks in the system.
| Charge | How it applies with two jobs |
|---|---|
| Income tax | On total income — one set of credits and one band, shareable between jobs |
| USC | On total income across all jobs |
| PRSI | Per employment — each job ≤ €352/week is exempt |
Estimate for a standard PAYE worker with standard credits, both incomes from employment. It doesn't model self-employed second incomes (Class S), BIK, or week-1 basis timing during the year.
People also ask
Do you get taxed more on a second job?
Not double — tax is on your total income, same as one job. But your credits and 20% band are usually used up by the main job, so most of the second job's pay hits the 40% rate. €15,000 on top of €40,000 → about €5,650 (38%) in deductions.
Why is my second job taxed at 40% from the first euro?
By default all your credits and band sit with your main job. If your combined income is under €44,000 (single), split them in myAccount so each payslip is deducted correctly.
Will splitting credits save me tax?
No — it changes timing, not the total. It stops over-deduction during the year; any overpayment is refunded at review anyway.
Do I pay PRSI on a second job?
Only if that job pays more than €352/week — PRSI is per employment, so small second jobs are often PRSI-free.
Related Ireland calculators
Sources: Revenue.ie — Second or multiple jobs, Budget 2026 (gov.ie). Estimates for planning only — not tax advice.