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Defined Benefit Pension Estimator

Calculate the Estimated Annual Pension, Estimated Monthly Pension, and Replacement Ratio instantly.

€
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Estimated Annual Pension

€22 500

1Step 1

Estimated Annual Pension

Estimated Annual Pension=defined_benefit_annual_pension⁡(Pensionable Salary,Service Years,Accrual Rate)\textit{Estimated Annual Pension} = \operatorname{defined\_benefit\_annual\_pension}\left(\textit{Pensionable Salary}, \textit{Service Years}, \textit{Accrual Rate}\right)
2Step 2

Estimated Monthly Pension

Estimated Monthly Pension=Estimated Annual Pension12\textit{Estimated Monthly Pension} = \frac{\textit{Estimated Annual Pension}}{12}
3Step 3

Replacement Ratio

Replacement Ratio={0Pensionable Salary≤0100×Estimated Annual PensionPensionable SalaryPensionable Salary>0\textit{Replacement Ratio} = \begin{cases}0 & \textit{Pensionable Salary} \le 0 \\ 100 \times \frac{\textit{Estimated Annual Pension}}{\textit{Pensionable Salary}} & \textit{Pensionable Salary} > 0\end{cases}

Understand the Defined Benefit Pension Estimator

Overview

This calculator estimates an annual defined-benefit pension using pensionable salary, credited service, and an accrual-rate assumption. It gives a simple benefit amount, monthly equivalent, and replacement ratio.

Input Terms

  • Pensionable Salary: Salary base used for the benefit formula.
  • Service Years: Credited years of service.
  • Accrual Rate: Annual benefit accrual percentage applied for each year of service.

Technical Rationale

The estimator applies the common final-salary style formula: salary multiplied by service and accrual rate. The monthly pension divides the annual estimate by twelve, while the replacement ratio compares the annual estimate with the salary base.

This is a compact helper for early benefit sizing and does not model plan-specific offsets, commutation, caps, vesting, taxation, or survivor benefits.

Important Notes

  • Confirm the salary definition, service definition, and accrual basis before using the output.
  • The formula is not a substitute for plan rules or administrator calculations.
  • Results are nominal and do not include indexation or retirement-date timing adjustments.

Illustrative helper only. Review assumptions before using outputs for advice, governance, or reporting.