MPSERS Pension vs 403(b): How They Work Together at Retirement

They're Not Competing — They're Complementary

Your MPSERS defined benefit pension and your 403(b) tax-sheltered annuity serve different roles. The pension provides a guaranteed monthly payment for life based on a formula (FAC × YOS × 1.5%). The 403(b) is a savings account you've been funding through payroll deductions — its value depends on how much you contributed and how your investments performed.

At retirement, you don't choose between them. You receive your monthly pension from ORS and decide separately when and how to tap your 403(b) balance.

The Pension Side

Your MPSERS pension starts on the 25th of each month following your retirement effective date. The amount is fixed by the payout option you select (Straight Life, 100%/75%/50% Survivor, or Equated). If you're a MIP member, it grows by 3% annually on the initial baseline. The pension is administered entirely by ORS — your 403(b) provider has no involvement.

The 403(b) Side

Your 403(b) is a separate account held with a vendor your school district authorized — common providers for Michigan educators include Voya, VALIC, Lincoln Financial, and various annuity companies. When you retire, you have several options:

Leave it invested: You can keep the balance growing tax-deferred and withdraw as needed. Required minimum distributions start at age 73.

Take systematic withdrawals: Set up periodic payments to supplement your pension. This gives you flexibility to adjust year by year.

Roll it over: Transfer the balance to a traditional IRA for potentially broader investment options, or convert to a Roth IRA (you'll owe income tax on the conversion).

Take a lump sum: Cash out all or part of the balance. You'll owe income tax on the distribution, and a 10% additional tax may apply before age 59½ unless an exception applies, including the separation-from-service exception for distributions after separation in or after the year you turn 55.

Coordination Strategy

The most common approach is using the 403(b) to fill gaps your pension doesn't cover:

The early-retirement bridge: If you retire before age 62, your pension may not cover all expenses if you would have claimed Social Security at 62. Withdrawing from the 403(b) during those pre-Social Security years can bridge the gap without forcing you into an Equated Plan option (which permanently reduces your pension at 62).

Healthcare premiums: If you hold the Personal Healthcare Fund (PHF) instead of the Premium Subsidy, you're paying 100% of health insurance premiums out of pocket. The 403(b) can fund those premiums until Medicare kicks in at 65.

Large one-time expenses: A 403(b) withdrawal can handle a roof replacement or a car purchase without disrupting your monthly pension cash flow.

Tax Considerations

Both your MPSERS pension and your 403(b) distributions are generally taxed as ordinary income at the federal level. For Michigan state taxes, Public Act 4 of 2023 phases in deductions for retirement income. In tax year 2026, retirees may deduct combined public and private retirement benefits up to the applicable annual limit; for most filers, that limit is $67,610 single or $135,220 joint. Income above the applicable limit may remain taxable, and taxpayers born before 1946 retain the prior unlimited subtraction for public-source benefits.

For tax years 2024 and 2025, the deduction percentage and eligibility depend on birth year. The PA 4 subtraction can apply to both pension income and 403(b)/IRA distributions, subject to the combined annual limit, so coordinate your withdrawal timing if you're in the phase-in window.

What MPSERS Members Get Wrong

Treating the 403(b) like a second pension: It's not a guaranteed income stream. If the market drops 30% in your first year of retirement and you're withdrawing aggressively, the balance may not last. The pension is the floor; the 403(b) is the cushion.

Rolling over to an annuity without understanding the fees: Some 403(b) vendors aggressively pitch annuity conversions at retirement. Review the surrender charges, annual fees, and guaranteed rates before converting — and remember that your MPSERS pension is already a guaranteed lifetime income stream.

For a full breakdown of how your pension, 403(b), Social Security, and DC accounts (if applicable) fit together, the MPSERS Retirement Guide includes a cash-flow planning worksheet for each plan tier.

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