How much self-employment tax will I owe in Michigan?

Self-employment tax is federal, not state, the rate is 15.3% (12.4% Social Security + 2.9% Medicare) on 92.35% of your net self-employment income. On top of that you'll owe federal income tax and, if applicable, Michigan state income tax. Enter your net income above to see the full breakdown.

Do I have to pay quarterly estimated taxes?

If you expect to owe $1,000 or more in federal tax for the year, yes, the IRS wants estimated payments on April 15, June 15, September 15, and January 15. Many states with income tax require the same. Missing a quarter triggers an underpayment penalty even if you pay in full by April.

Can I deduct half of my self-employment tax?

Yes. The employer-equivalent half of your SE tax (7.65% of the SE base) is deductible from your adjusted gross income. This calculator applies that deduction automatically before computing federal and state income tax.

Is this calculator accurate enough for filing?

It is an estimate, good for quarterly planning, pricing your rates, and setting aside tax reserves. For your actual return, use tax software or a CPA; individual credits, deductions, and multi-state work can shift the final number materially.

What is Michigan's income tax rate for freelancers in 2026?

Michigan applies a flat 4.25% individual income tax rate for 2026, after the applicable personal exemption. There is no separate Michigan self-employment tax.

Does this calculator include Detroit city income tax?

No. This page estimates Michigan state income tax only. Detroit and some other Michigan cities may levy local income tax, so city residents should add that amount separately.

Michigan Self-Employment Tax Calculator