Capital gains tax in Michigan is charged at a flat 4.25%, the same rate the state applies to wages and every other kind of income.1Michigan Legislature. MCL – Section 206.30 There are no separate brackets for investment profits and no special treatment for assets held longer than a year. Because Michigan starts its calculation from your federal adjusted gross income, whatever gain lands on your federal return lands on your state return too, which makes the federal rules for basis, losses, and exclusions the real drivers of what you owe Lansing.
The Rate and How It Applies
Michigan’s income tax begins with federal adjusted gross income and adjusts from there. Capital gains are already inside that starting number, so they get taxed at 4.25% along with everything else. A $10,000 gain and a $500,000 gain face the same percentage.
The federal system splits capital gains into short-term (held a year or less, taxed at ordinary rates) and long-term (held longer than a year, taxed at 0%, 15%, or 20% depending on income). Michigan ignores that split. Both types hit your MI-1040 at 4.25%. The federal distinction still shapes your total bill, though, because federal and state taxes stack: a long-term holding period cuts your IRS liability without changing your Michigan one, and that is often where the bigger savings sit.
Calculating the Gain
Your capital gain is what you received for the asset minus your adjusted basis. Basis usually starts with the purchase price and shifts over time. Improvements to real estate, like a new roof or a kitchen remodel, raise your basis. Reinvested dividends and stock splits change the basis on securities. Commissions, transfer taxes, and title fees paid at purchase or sale either raise basis or reduce net proceeds.
Errors in basis are where most trouble starts, and the damage doubles because federal and Michigan returns rely on the same figure. Overstate basis by $5,000 and you understate gain by $5,000 on both. Hold on to purchase receipts, closing statements, brokerage confirmations, and improvement records. Brokers are required to report cost basis on stocks bought after 2011, which helps for newer holdings; older real estate and long-held securities often need reconstruction.
Each transaction goes on IRS Form 8949, with the asset description, dates acquired and sold, proceeds, and cost basis, before totals move to Schedule D.2Internal Revenue Service. Instructions for Form 8949 Those federal totals flow into your MI-1040 through adjusted gross income. Michigan does not have its own capital gains form.
Using Losses to Cut the Gain
When you sell for less than basis, you have a capital loss. Losses first offset gains of the same type, then the other type. If a net loss remains, you can deduct up to $3,000 a year ($1,500 if married filing separately) against ordinary income.3Office of the Law Revision Counsel. 26 USC 1211 – Limitation on Capital Losses Because Michigan piggybacks on federal AGI, that deduction reaches your state return automatically.
Losses above the $3,000 cap carry forward indefinitely. A $20,000 net loss in 2025 gives you $3,000 against ordinary income this year and $17,000 to apply against future years’ gains and income until it is used up.
The Wash Sale Trap
You cannot sell a stock at a loss, buy it right back, and still claim the loss. The wash sale rule disallows the deduction if you buy substantially identical securities within 30 days before or after the sale, a 61-day window in total.4Office of the Law Revision Counsel. 26 U.S. Code 1091 – Loss From Wash Sales of Stock or Securities A purchase by your spouse or inside your IRA also triggers it. The disallowed loss is added to the basis of the replacement shares, so you recover it when you sell those shares cleanly.
Exclusions and Deductions That Actually Reduce What You Owe
Selling Your Primary Home
The single largest break for most Michigan homeowners is the federal exclusion on a principal residence. If you owned and lived in the home for at least two of the five years before selling, up to $250,000 of gain is excluded from taxable income, or $500,000 for a married couple filing jointly when both spouses meet the use test.5Office of the Law Revision Counsel. 26 USC 121 – Exclusion of Gain From Sale of Principal Residence Because the exclusion takes the gain out of federal AGI, it disappears from Michigan taxable income as well. Second homes, rentals, and vacation properties do not qualify.
Senior Investment Income Deduction
Michigan offers a state-specific deduction that directly reduces capital gains tax for older filers. If you were born before 1946, you can deduct interest, dividends, and capital gains up to $9,420 on a single return or $18,840 on a joint return, with the amounts adjusted annually for inflation. If you also claim Michigan’s deduction for retirement or pension benefits, the investment income deduction is reduced dollar-for-dollar by the pension deduction.1Michigan Legislature. MCL – Section 206.30 Filers born in 1946 or later do not qualify.
Section 1031 Exchanges on Investment Real Estate
If you sell investment real estate and roll the proceeds into similar real property, Section 1031 lets you defer the entire gain. Since the Tax Cuts and Jobs Act, this only works for real property, not equipment or vehicles. Two deadlines are strict: identify replacement property in writing within 45 days of selling, and close on the replacement within 180 days or by your tax return due date (with extensions), whichever comes first.6Internal Revenue Service. Like-Kind Exchanges Under IRC Section 1031 A qualified intermediary has to hold the funds between transactions; you cannot touch them. Miss a deadline and the full gain becomes taxable on both returns.
Inherited Assets and the Step-Up in Basis
Inherited capital assets generally take a new basis equal to their fair market value on the date of the original owner’s death, regardless of what that person originally paid.7Office of the Law Revision Counsel. 26 U.S. Code 1014 – Basis of Property Acquired From a Decedent Stock a parent bought for $10,000 in 1990 that was worth $200,000 at death gives you a $200,000 basis. Sell it for $205,000 and you owe tax on $5,000, not $195,000. The stepped-up basis reaches Michigan automatically through federal AGI. On Form 8949, enter “INHERITED” in the date-acquired column.8Internal Revenue Service. Gifts and Inheritances For publicly traded securities the valuation is easy; real estate and closely held business interests usually need a professional appraisal.
Cryptocurrency
The IRS treats cryptocurrency as property, so selling, trading, or spending it triggers a capital gain or loss the same way selling stock does.9Internal Revenue Service. Frequently Asked Questions on Virtual Currency Transactions Swapping one coin for another is taxable; there is no crypto equivalent of a 1031 exchange. Those gains reach Michigan at 4.25% through federal AGI like any other gain.
Federal Tax That Stacks on Top
Michigan’s 4.25% is not the whole story. Federal income tax applies to the same gains: ordinary rates for short-term, and 0%, 15%, or 20% for long-term depending on your taxable income. Holding an asset past the one-year mark can cut the federal side sharply even though Michigan treats both the same.
Higher earners also owe the 3.8% federal net investment income tax on capital gains, interest, dividends, and other investment income once modified adjusted gross income passes $200,000 for single filers, $250,000 for joint filers, or $125,000 for married filing separately.10Internal Revenue Service. Topic No. 559, Net Investment Income Tax The 3.8% applies to the lesser of net investment income or the amount by which income exceeds the threshold. A joint filer with $300,000 in income and $80,000 of capital gains would owe the surcharge on $50,000. It is reported on Form 8960 and is separate from Michigan’s income tax.
Filing, Estimated Payments, and Extensions
Capital gains ride into your MI-1040 as part of adjusted gross income; there is no separate Michigan capital gains form. The filing deadline for tax year 2025 returns is April 15, 2026.11State of Michigan. Individual Income Tax Filing Season Begins Today
If you expect to owe $500 or more in Michigan tax after withholding and credits, quarterly estimated payments are required using Form MI-1040ES.12State of Michigan. Am I Required to Make Estimated Tax Payments? Large asset sales catch people out because nothing withholds on a home sale or a brokerage liquidation. To avoid underpayment penalties, your combined withholding and estimates must reach at least 90% of the current year’s tax or 100% of last year’s (110% if your prior-year AGI was above $150,000). At the federal level, estimated payments kick in when you expect to owe $1,000 or more after withholding.13Internal Revenue Service. Form 1040-ES (2026) Instructions One asset sale can trigger both at once.
A federal extension (Form 4868) or Michigan Form 4 automatically pushes your Michigan filing deadline out to the new federal date.14State of Michigan. Form 4, Application for Extension of Time to File Michigan Tax Returns An extension buys time to file, not time to pay. Any tax owed still has to be paid by April 15 to avoid interest.15State of Michigan. What Is an Extension?
What Late Payment Costs
Michigan’s late-payment penalty is 5% of the unpaid tax if you are late by up to two months, then another 5% for each additional month or partial month, capped at 25%.16Michigan Legislature. MCL – Section 205.24 The clock starts from the original due date, not the extended one, which is why paying by April 15 matters even when you have filed an extension.
Interest runs on top. Michigan sets the rate at 1 percentage point above the adjusted prime rate and recalculates every six months. From January 1 through June 30, 2026, the annual rate is 8.48%.17Michigan Department of Treasury. Interest Rate Due on Underpayments and Overpayments Interest accrues from the original due date until the balance is cleared.18Michigan Legislature. MCL – Section 205.23 On a $10,000 balance carried six months, that works out to roughly $424 in interest and up to $2,000 in penalty, a combined cost close to a quarter of the tax in less than a year.