Estimate the annual and monthly income from a defined-benefit pension using your service years, salary, and plan multiplier.
How a Defined-Benefit Pension Works
A traditional defined-benefit pension promises a set income in retirement based on a formula rather than on investment returns. The standard formula multiplies your years of service by a benefit multiplier and your final average salary. The result is a guaranteed annual benefit paid for life.
The Pension Formula
Annual pension = years of service × multiplier × final average salary. With 30 years of service, a 2% multiplier, and a $70,000 final salary, the benefit is 30 × 0.02 × $70,000 = $42,000 per year. The multiplier and the definition of final average salary are set by your specific plan.
The Replacement Ratio
The replacement ratio is your pension as a percentage of your pre-retirement salary. Financial planners often target a combined replacement ratio of 70 to 85 percent from all sources — pension, Social Security, and personal savings. A pension alone rarely covers the full amount, so it usually works alongside other income.
Tip: Check whether your plan includes a cost-of-living adjustment (COLA). Without one, inflation steadily erodes the buying power of a fixed pension over a long retirement. This calculator shows the lifetime total without a COLA.
Frequently Asked Questions
How is a pension benefit calculated?
Most defined-benefit pensions use the formula: years of service × benefit multiplier × final average salary. For example, 25 years × 2% × $80,000 equals a $40,000 annual pension.
What is a typical pension multiplier?
Multipliers commonly range from 1% to 2.5% per year of service, depending on the plan. Public-sector and union plans often sit near 2%, while many corporate plans use lower figures or have been frozen entirely.
What is final average salary?
Final average salary is the average of your highest-earning years, often the last three or five years of service. Your plan document defines exactly which years and pay components are included.
What is a good pension replacement ratio?
Planners generally aim for total retirement income of 70 to 85 percent of pre-retirement pay. A pension typically provides part of that, with Social Security and personal savings filling the rest.
Does a pension keep up with inflation?
Only if the plan includes a cost-of-living adjustment. Many private pensions pay a fixed amount that loses purchasing power over time, while many government pensions include partial or full COLAs.