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Defined benefit pension calculator for Ireland

Illustrate a defined-benefit pension and lump sum from the salary, service and accrual formula entered.

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Illustrative only — not a guarantee or personal recommendation. It is not an official entitlement, scheme-benefit or tax assessment. Calculator assumptions reviewed 24 September 2026. Assumptions & methodology

Illustrate a final-salary defined benefit

Defined-benefit schemes do not all use the same formula. Enter the pensionable salary, reckonable service, pension accrual denominator and any separate lump-sum accrual shown in your scheme information.

Understanding common formula formats

Example formulaCalculator entries
1/60 pension for each year, no automatic lump sumPension denominator 60; lump-sum numerator 0
1/80 pension plus 3/80 lump sum for each yearPension denominator 80; lump-sum numerator 3; lump-sum denominator 80

If the scheme integrates benefits with the State Pension, enter only an offset confirmed by the scheme documents or administrator. The calculator caps service at 40 years for the illustration.

Why the official estimate may differ

Final pensionable remuneration, part-time service, breaks, transferred service, early or late retirement, preserved benefits, scheme integration, dependant benefits and commutation rules can materially change the result. Career-average and Single Public Service Pension Scheme benefits cannot be reliably estimated with a final-salary formula.

Public-service pension guidance → · DB pensions and the SFT →

The result is an illustration based on the information entered and the stated assumptions.