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Your benefit at retirement is based on a formula consisting of:

  • your five successive years of highest earnings
  • years of service
  • age at retirement

Service Credit Percent

Service years and months are converted to a percentage of your average monthly salary through two formulas—the Step formula or the Level formula.

If you were hired for the first time after June 30, 1989, MSRS must use the level formula. If you were hired before July 1, 1989, MSRS can compute your annuity using either formula. If you are eligible for both, MSRS will use the one that gives you the higher annuity, while considering any early-retirement adjustment.

Step Formula

You receive 1.2% for each year of service for the first 10 years, then 1.7% for each year thereafter. This formula is used in your computation only if your Minnesota public retirement coverage began before July 1, 1989.

Level Formula

You receive 1.7% for all years of service. Anyone hired for the first time after June 30, 1989, must use this formula.

Example (Single-Life annuity)

You are an employee who retires at age 65 with 20 years of service and an average high-year income of $30,000 ($2,500 per month). Your allowable-service percentage is calculated at 1.2% for the first 10 years, then 1.7% for the other years under the step formula. Your allowable-service percentage is calculated at 1.7% under the level formula. In this case, the level formula is used because it provides a greater benefit.

Step Formula
Employee's Age
Service
Service-credit percentage


65 years
20 years
10 years x 1.2% =
10 years x 1.7% =
Total Credit


12.0
17.0
29%
Service-credit percentage times annual salary 29% x $30,000
$8,700
Monthly Benefit  
$725
Level Formula
Employee's Age
Service
Service-credit percentage

65 years
20 years
20 years x 1.7% =
Total Credit


34%
34%
Service-credit percentage
times annual salary
34% x $30,000
$10,200
Monthly Benefit  
$850

In this example, MSRS pays $850 per month in addition to any payment you may receive from Social Security.

Employee Benefits