MI Form 4884 Pension Subtraction: Birth Year Limits and Calculation

To claim the Michigan Form 4884 pension subtraction, add up your qualifying retirement and pension income, apply the maximum allowed for your birth-year tier, reduce that cap by any military, National Guard, or Railroad Retirement benefits you already subtracted on Schedule 1, and carry the smaller of your income or the remaining cap to line 27 of Schedule 1 on your MI-1040. Starting with the 2026 tax year, the phase-in under Public Act 4 of 2023 is complete, so nearly every taxpayer can subtract qualifying pension income up to the full maximum that was once reserved for retirees born before 1946.¹

Which Retirement Income Qualifies

Qualifying benefits are most payments reported on a federal Form 1099-R that are included in your adjusted gross income. That covers defined benefit pensions, distributions from qualified retirement plans, and similar employer-sponsored retirement income.²

IRA distributions qualify if you are over age 59½ or receiving a series of substantially equal periodic payments for life under Internal Revenue Code Section 72(t). Distributions from 401(k) and 403(b) plans qualify when they come from employer contributions or from employee contributions that triggered an employer match.³

Distributions from 457 deferred compensation plans do not qualify. Michigan’s Income Tax Act specifically excludes them.⁴

Several income types do not go on Form 4884 at all. Social Security benefits, U.S. military retirement pay, Michigan National Guard pensions, and Railroad Retirement benefits are fully exempt from Michigan income tax and are subtracted directly on Schedule 1.⁵ Those amounts also reduce the private pension cap you can use on Form 4884, so nothing gets counted twice.

Maximum Subtraction by Birth Year

Even with the phase-in complete, birth year still determines which calculation method you use and whether the Michigan Standard Deduction is an alternative. Married couples filing jointly use the birth year of the older spouse. The dollar figures below are the 2025 amounts, the most recent published limits. Michigan adjusts them annually for inflation, so 2026 numbers will be slightly higher once the Treasury Department releases the updated Form 4884.²

Born Before January 1, 1946

You can subtract all qualifying retirement income from federal and Michigan public sources with no cap. For private retirement income, the 2025 cap is $65,897 if single or $131,794 if filing jointly. If your public pension benefits already exceed the private-pension maximum, you cannot claim any additional subtraction for private retirement income.²

Born January 1, 1946 Through December 31, 1952

After reaching age 67 you can choose the Tier 2 Michigan Standard Deduction or the phase-in pension subtraction. You pick whichever saves you more; you cannot combine them.⁶

The Michigan Standard Deduction for this group is $20,000 for single filers or $40,000 for joint filers, and it applies to all income, not only retirement income. It is reduced by personal exemption amounts and any taxable Social Security benefits included in your AGI. The phase-in subtraction, at 100% of the Tier 1 private pension maximum for 2026, will be the better choice for most people in this range unless their pension income is small relative to other income.¹

Born After December 31, 1952

Under the old rules, this group had no pension subtraction at all until age 67, and even then the amounts were small. Starting in 2026, you can subtract qualifying pension income up to the full Tier 1 maximum regardless of your birth year.¹ Taxpayers born between January 1, 1953 and January 1, 1959 who have reached age 67 also have access to a Tier 3 Michigan Standard Deduction as an alternative.²

Retirees From SSA-Exempt Employment

Higher limits apply when your pension comes from work that was exempt from Social Security, such as certain government positions. Uncovered retirees who were retired by January 1, 2013 can subtract up to $35,000 if single or $55,000 if filing jointly. If both spouses on a joint return have qualifying SSA-exempt pensions, the combined maximum increases to $70,000.²

Uncovered retirees who were not retired by that date but have reached age 62 can subtract up to $15,000 per qualifying spouse. Eligibility windows shift each tax year. For the 2025 tax year the provision applied to those born between January 1, 1959 and January 1, 1964.⁷ With the full phase-in in 2026, some of these taxpayers will do better with the general subtraction. Run the numbers both ways.

Working the Calculation on Form 4884

The core logic is the same in every tier: figure out your qualifying income, figure out your cap, subtract the smaller number. The mechanics differ slightly by tier.

If You Were Born Before 1946

Total your qualifying retirement income from public sources — federal civil service pensions, State of Michigan pensions, and local government pensions. That full amount is subtractable with no cap. Then take the private pension maximum ($65,897 single or $131,794 joint for 2025) and reduce it by any military, National Guard, or Railroad Retirement benefits you already claimed on Schedule 1. The remainder is your available private pension cap. Your private pension subtraction is the lesser of your actual private retirement income or that remaining cap.²

If your public pension benefits already exceed the maximum, you get no additional subtraction for private income. That surprises some filers, but it simply means your public pension already used up the full benefit.

If You Were Born in 1946 or Later

For the 2026 tax year, multiply the Tier 1 private pension maximum by 100%. Reduce that by any military, National Guard, or Railroad Retirement benefits already taken on Schedule 1 to get your available cap. Compare that cap to your total qualifying retirement income on Form 4884. Your subtraction is the smaller of the two.²

Standard Deduction or Pension Subtraction

If you qualify for a Michigan Standard Deduction, run both options. The Standard Deduction starts at $20,000 single or $40,000 joint, and it is reduced by your personal exemption amount and any taxable Social Security in AGI. For retirees with larger pensions and little other income, the phase-in subtraction almost always wins. For retirees with a modest pension but significant wage or investment income, the Standard Deduction can save more because it applies to all income types rather than only qualifying retirement benefits.⁶

You get one or the other, not both. If your tax software lets you toggle between them, try each and compare the tax owed.

Surviving Spouse Rules

If your spouse has died and you are receiving their pension benefits, you may be able to claim the subtraction based on your deceased spouse’s birth year rather than your own. This matters most when the deceased spouse was born before 1953, giving you access to the older, more generous tier rules. To qualify, all three of the following must be true:⁸

You filed a joint return for the tax year in which your spouse died.
A retirement or Social Security subtraction was claimed on that final joint return.
You have not remarried.

A surviving spouse born after 1945 who has reached age 67 can elect the greater of the Michigan Standard Deduction or the retirement subtraction using the deceased spouse’s birth year. You cannot claim the deceased spouse’s Standard Deduction amount, only their tier placement for the pension subtraction.⁸

Where the Number Goes on Your Return

Once Form 4884 is complete, transfer the subtraction amount to line 27 of Michigan Schedule 1, which is attached to the MI-1040.⁹ The subtraction reduces your federal AGI to arrive at Michigan taxable income, which is then taxed at Michigan’s flat 4.25% rate. Paper filers attach the completed Form 4884 to the MI-1040. Electronic filing software transmits the Form 4884 data with the return.

1
Michigan Legislature. Public Act 4 of 2023
2
State of Michigan. Form 4884 Instructions (Tax Year 2025)
3
State of Michigan. Michigan Department of Treasury – Form 4884 Retirement and Pension Benefits Instructions
4
Michigan Department of Treasury. Individual Plans
5
Michigan House Fiscal Agency. Three Tiered Treatment of Retirement Income
6
Michigan Department of Treasury. 2025 Tier II
7
Michigan Department of Treasury. 2025 Tier III
8
Michigan Department of Treasury. Surviving Spouse
9
State of Michigan. 2025 Michigan Schedule 1 Instructions