Self-Employed in Michigan? Estimate Your 2027 ACA Subsidy
If you're self-employed in Michigan, your 2027 ACA subsidy is built on one number: your net income, not what hits your bank account. Get that number right and you could save thousands. Get it wrong, and starting this year you'll pay back every extra dollar at tax time. Here's how to estimate it in four steps, and how to stay on the right side of the subsidy cliff.
Step 1: Start with net profit, not gross sales
HealthCare.gov asks self-employed people for net self-employment income. That's the profit on your Schedule C, after business expenses like mileage, supplies, software, a home office and equipment.
Then it gets a little better. The Marketplace uses your modified adjusted gross income (MAGI), which starts from the adjusted gross income on your tax return (HealthCare.gov). For self-employed people, that number is usually lower than profit, because half of your self-employment tax comes off before you get there.
Takeaway: Pull up last year's Schedule C. Your 2027 estimate starts with profit, not sales.
Step 2: Find your spot against the 2027 subsidy cliff
The extra subsidy help from the pandemic years ended after 2025. For 2027 coverage, there's no premium tax credit if your income is above 400% of the federal poverty level (healthinsurance.org). Based on the 2026 poverty guidelines, the cutoff is:
- 1 person: $63,840
- 2 people: $86,560
- 3 people: $109,280
- 4 people: $132,000
Below the line, you never pay more than a set share of your income for the benchmark Silver plan. For 2027, that share tops out at 10.22% of income (IRS Rev. Proc. 2026-26). Go $1 over the line, and you pay full price.
On the low end, a single person earning about $22,000 or less may qualify for the Healthy Michigan Plan instead of a Marketplace plan.
Takeaway: If your estimate lands within a few thousand dollars of your cutoff, keep reading. Step 3 is for you.
Step 3: Use legal ways to lower your number
Self-employed people have more control over their income number than almost anyone else. A few common moves:
- HSA contributions. For 2027 you can put up to $4,500 (self) or $9,000 (family) into an HSA. Every Marketplace Bronze plan is HSA-eligible (healthinsurance.org).
- Pre-tax retirement contributions. Money into a SEP-IRA or solo 401(k) lowers the income the Marketplace counts.
- Business expenses you're already allowed. Track them all year, not just in April.
Simplified example: A Metro Detroit freelance designer, single, expects $70,000 in profit for 2027. After the half-of-self-employment-tax adjustment, her income is roughly $65,000. That's over the $63,840 cliff, so she gets no help. If she picks a Bronze plan and puts $4,500 into an HSA, she lands around $60,500, under the line. Now she pays no more than about $515 a month for the benchmark Silver plan, and she has $4,500 saved for medical bills.
Takeaway: Talk to your tax preparer before you set your 2027 estimate. The right move depends on your whole tax picture.
Step 4: Update your income during the year
This one changed for 2027 coverage, and it matters most for people with up-and-down income. Starting with tax year 2026, the IRS eliminated the repayment caps on extra subsidy. If you earn more than you estimated, you repay all of the extra help when you file your taxes, not just part of it.
The fix is simple: when a big contract lands or business slows down, update your Marketplace application right away. If your income drops, you may qualify for more help mid-year.
Takeaway: Set a reminder to check your year-to-date profit every quarter, the same time you pay estimated taxes.
Key dates for 2027 coverage
- November 1: Open Enrollment opens. Enter your 2027 net income estimate.
- December 15: Enroll by this date for coverage starting January 1.
- January 15: Last day to enroll. Enroll after December 15 and coverage starts February 1.
Already on a Marketplace plan? Your renewal letter shows the income you used last year. Here's how to read your 2027 renewal notice. For the full list of what's changing, see 5 ACA Plan Changes for 2027 Every Michigan Shopper Should Know.
Let's run your numbers together
Self-employed income is the hardest kind to estimate, and the subsidy cliff makes small mistakes expensive. As a licensed Michigan agent, I'll compare plans from multiple carriers side by side, including HSA-eligible Bronze options, and show you where your income lands against the cliff. Marketplace premiums are the same whether you enroll alone or with me, so my help costs you nothing. Get a free self-employed plan review, and bring a rough idea of your 2027 profit.
More on how I help: my ACA help page and common Open Enrollment questions.
2027 figures are from public sources as of October 2026 and may change. This article is general information, not tax advice. Talk to a tax professional about your situation. This site is not the Health Insurance Marketplace® website and is not affiliated with HealthCare.gov.