Skip to main content

Methodology

Ireland PAYE Calculator methodology

Calculate annualised 2026 Irish PAYE Income Tax only from explicit band and credits. Scope: Ireland PAYE Income Tax, 2026 calendar year. Official Revenue Income Tax and pension-relief sources captured and reviewed 27 July 2026.
Duc Nguyen X.By Duc Nguyen X.· Founder, Wage101Last reviewed: View update historyMethodology

Educational only: Work and pay decision support, not tax, legal, financial or career advice.

Privacy: Calculations run locally; Wage101 does not receive your work or pay inputs.

Update policy: Reviewed when formulas or official dependencies change.

Scope: Irish work and pay planning using your own assumptions.

1. Formulas and units

PAYE Income Tax after credits
incomeTaxAfterCredits = grossIncomeTax − taxCreditsApplied

Where

incomeTaxAfterCredits
PAYE Income Tax after credits (EUR/year)Source: Calculated output
Taxable income for PAYE
taxableIncomeForPaye = annualGrossPay − pensionContributionRelievable

Where

annualGrossPay
Annual gross PAYE income (EUR/year)Source: User assumption
taxableIncomeForPaye
Taxable income for PAYE (EUR/year)Source: Calculated output
Gross Income Tax
grossIncomeTax = round to cents(min(taxableIncomeForPaye, annualStandardRateBand) × 0.20 + max(0, taxableIncomeForPaye − annualStandardRateBand) × 0.40)

Where

annualStandardRateBand
Annual standard-rate band (EUR/year)Source: User assumption
grossIncomeTax
Gross Income Tax (EUR/year)Source: Calculated output
Tax credits applied
taxCreditsApplied = min(grossIncomeTax, annualTaxCredits)

Where

annualTaxCredits
Annual Income Tax credits (EUR/year)Source: User assumption
taxCreditsApplied
Tax credits applied (EUR/year)Source: Calculated output
Pension contribution relieved
pensionContributionRelievable = min(annualPensionContribution, min(annualGrossPay, 115000) × statutory age percentage), rounded to cents

Where

annualGrossPay
Annual gross PAYE income (EUR/year)Source: User assumption
annualPensionContribution
Eligible pension contribution (EUR/year)Source: User assumption
age
Age (years)Source: User assumption
pensionContributionRelievable
Pension contribution relieved (EUR/year)Source: Calculated output

Money inputs and outputs use EUR. Pay, time, benefits and work-related costs use the units stated beside each input.

2. Worked example

Input assumptions

Calculate PAYE Income Tax on €60,000 with an entered €44,000 band and €4,000 credits.

Calculation and outputs

Example

Calculate PAYE Income Tax on €60,000 with an entered €44,000 band and €4,000 credits.

PAYE Income Tax after credits
10,000.00 currency units
Taxable income for PAYE
57,000.00 currency units
Gross Income Tax
14,000.00 currency units
Tax credits applied
4,000.00 currency units
Pension contribution relieved
3,000.00 currency units

Gross tax, credits and PAYE after credits remain separate.

Interpretation

Use this as bounded PAYE income tax, not complete Irish take-home pay.

3. Validation and boundary checks

  • The worked example uses the same shared-work-logic engine as the interactive planner.
  • Unsupported eligibility, policy branches and out-of-range assumptions fail closed.
  • Result cards, trace, CSV, PDF and methodology bind to named engine result fields.

4. Assumptions and source classification

  • The entered standard-rate band and Income Tax credits are correct.
  • The pension contribution is eligible for Income Tax relief.

Official dependencies used by this calculator are captured in the Wage101 evidence register and version-acknowledged in this page history. User-entered work and pay assumptions remain separate from those official inputs.

5. Limitations

  • USC, PRSI, RPN, cumulative payroll and take-home pay are excluded.
  • Marital status, emergency tax and Week 1/Month 1 treatment are not inferred.

This is educational decision support, not personalised tax, legal, financial or career advice. Check how the rules that apply in Ireland treat your work and pay circumstances, and seek qualified advice where appropriate.

6. Update and evidence policy

Registered family-level suites test formula invariants and example reconciliation; the release ledger records that coverage without claiming a separate oracle for every line of public copy. Registered official sources block dependent public workflows when their evidence or version acknowledgement is unavailable or invalid. Work and pay inputs remain user-supplied because they vary by person, job and contract.

Change history

  1. : Initial public release of the Ireland PAYE planner and methodology.

Related reading

Use these practical guides to interpret the decision and its assumptions.

Return to the calculator