Eight diagnoses for an Irish payslip that does not match expectation, in 2026. Each entry includes the symptoms, the fix, and the next action with your employer or via Revenue myAccount.
1. Emergency tax (Week 1 or Month 1 basis)
When Revenue has not issued an RPN to your employer yet, or when your employment is not registered in myAccount, the employer applies emergency basis. The first four weeks tax at standard rate without credits, then 40 percent flat. Fix: register the employment in myAccount under Jobs and Pensions. Refunds usually flow on the next cumulative payslip.
Indicators on your payslip
- Tax code shows Week 1 or Month 1
- Net pay much lower than expected
- Cumulative figures missing
2. Missing or wrong tax credits
If your RPN does not list the Personal Tax Credit (€2,000) plus PAYE Credit (€2,000) you will pay too much PAYE. Verify in myAccount under Manage Your Tax 2026. If credits are missing, click Add Credit and select the relevant entry. The next RPN to your employer will include the change.
Indicators on your payslip
- PAYE deduction higher than calculator shows
- Credits column on payslip shows less than €4,000
- Tax code letter does not match marital status
3. USC band crossing
USC bands for 2026 are 0.5 percent up to €12,012, 2 percent up to €28,700, 3 percent up to €70,044, 8 percent above. As year-to-date earnings cross a threshold, the employer should apply the next band. Mid-year promotions, large bonuses, and overtime spikes commonly trigger this. The cumulative basis means you pay the higher rate on the income above the threshold only.
Indicators on your payslip
- Net pay drop on a high-earning month
- USC year-to-date jumped sharply
- Bonus or overtime period coincides with the dip
4. PRSI class mismatch
Most employees are Class A1 (4.2 percent rising to 4.35 percent on 1 October 2026). Public servants on full PRSI have Class A as well. Self-employed are Class S. If your contract type changed (e.g., contractor to employee or vice versa), the employer may still apply the old class. Check the class letter on your payslip and contact payroll if it does not match.
Indicators on your payslip
- PRSI rate looks different from 4.2 percent of weekly pay
- Class letter changed after a contract change
- Cross-border worker with NI/UK PRSI confusion
5. Pension contribution miscalculation
Pension contributions reduce taxable pay for both PAYE and USC. If your employer applied your contribution rate to gross pay before the salary sacrifice election, both your PAYE and USC will be over-stated. Auto-enrolment under My Future Fund commenced 1 January 2026 with 1.5 percent each from employee, employer, and a 0.5 percent state top-up.
Indicators on your payslip
- Pension percentage looks correct but PAYE is higher than calculator
- PRSA or AVC missing from deductions
- Cumulative pension YTD does not match contributions
6. BIK on company benefits
Benefit-in-kind charges for company cars, vans, electric vehicles, medical insurance, and other perks add to taxable pay through the notional pay line. Electric vehicles get partial relief but not zero in 2026 except below the OMV threshold. Sudden BIK appearance after a promotion or new perk explains a pay drop.
Indicators on your payslip
- Notional pay or BIK line appears on payslip
- Gross taxable higher than basic plus overtime
- Benefit added or changed in last pay period
7. Wrong Standard Rate Cut-Off Point
Single SRCOP is €44,000. Married jointly assessed with one earner is €53,000. Two earners share €88,000, but not evenly and not freely: it is €53,000 plus an increase of up to €35,000 capped at the lower earner's income, and Revenue states that increase cannot be transferred between spouses or civil partners. The most one RPN can carry is €53,000. If your civil status changed (marriage, separation, civil partnership) and you have not updated myAccount, your cut-off could be too low and the 40 percent rate kicks in too early. If your own RPN shows less than €53,000 and your spouse earns less than €35,000, that is usually the allocation working as intended rather than an error.
Indicators on your payslip
- Higher rate started before €44,000 cumulative
- Marital status mid-year change not reflected
- The base band is allocated to your spouse's RPN and you have not asked myAccount to move it
8. Missing overtime, premium, or commission
Sunday premium, public holiday pay, shift premium and commission must appear on the payslip with their own line items. If a shift you worked is missing, contact payroll within seven working days for the next pay run correction. Keep your roster screenshots and worked-hours app records as evidence.
Indicators on your payslip
- Roster shows hours that are absent from payslip
- Sunday or public holiday premium absent
- Commission earned not yet posted
When to escalate
If your employer disputes the reason or refuses to correct, document everything in writing, request a P21 Statement of Liability through Revenue myAccount once the year ends, and contact the Workplace Relations Commission for unpaid wages disputes.
For tax disputes specifically, Revenue runs a free informal review through myAccount and a formal appeal route via the Tax Appeals Commission within 30 days of a notice of assessment.