The self-employed health insurance deduction, untangled

Educational overview, not tax advice — bring this page to your tax professional.

The good news

If you have net self-employment profit, you can generally deduct health insurance premiums for yourself, your spouse, and dependents above the line — no itemizing needed. It reduces income tax (though not self-employment tax) and is one of the most valuable freelancer breaks in the code.

The three rules

1. Profit is the ceiling. The deduction can't exceed your net self-employment income; a loss year means no deduction (premiums may still count toward itemized medical expenses).
2. No double-dipping with the subsidy. You deduct only what you actually paid — the premium minus your advance premium tax credit. A $700 premium with a $450 subsidy means a $250/month deduction, not $700.
3. Not eligible in months you could have joined an employer plan — yours or your spouse's. Eligibility is month-by-month.

The circular part, honestly

Here's the wrinkle: the deduction lowers your MAGI → lower MAGI can raise your subsidy → a bigger subsidy lowers your out-of-pocket premium → which lowers the deduction. The IRS provides iterative and simplified calculation methods for exactly this loop, and every serious tax package handles it automatically. Your job is not to solve the loop — it's to (a) know it exists, (b) give your software accurate premium and 1095-A numbers, and (c) near the 400% FPL cliff, have a professional check whether the deduction is what keeps you under the line. That last case is where this stops being trivia and becomes thousands of dollars.

[PLACEHOLDER — during licensed review, add a two-column worked example for plan year 2027 showing the iterative result for a freelancer at ~380% FPL where the deduction preserves the subsidy.]