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Free 60-second toolSelf-Employed Health Insurance Deduction Calculator: How Much Does Health Insurance Really Cost You When You Work for Yourself?
By Dick Tracy · Published August 29, 2026
If you are self-employed and your business made a profit, you can deduct 100% of your health insurance premiums on your personal return, no itemizing required. The deduction is capped at your net profit minus half of your self-employment tax, and only the months you could not join an employer plan count. This free calculator takes your monthly premium, your net profit, and your tax bracket and shows you the deduction, the estimated tax savings, and what your coverage really costs per month after the write-off. Then it shows you the bigger lever most owners never touch: the plan itself. No email, no signup. I educate, you decide.
What counts as a premium here?
Which number is that?
Why does this matter?
The bigger lever: the plan, not the deduction
Estimates only, not tax advice. The cap uses an approximation of self-employment tax (92.35% of profit, times 15.3%, with the Social Security portion stopping at the 2026 wage base of $184,500) and ignores SEP, SIMPLE, and solo 401(k) contributions, which also reduce the cap. Savings use your marginal income tax rates only; the deduction does not reduce self-employment tax. S corporation owners use a different mechanism through the W-2. Confirm the final number with your CPA. I am the insurance side of the table, and I am glad to talk to your tax person directly.
The three rules that decide your number
Rule one, the profit cap. The deduction cannot be bigger than your net profit minus half of your self-employment tax (and minus any SEP, SIMPLE, or solo 401(k) contributions). A slow year with $12,000 of profit and $9,000 of premiums still works. A loss year gives you nothing, no matter what you paid. Rule two, eligible months. Any month you could have joined an employer-subsidized plan, yours or your spouse's, is out, even if you never signed up. Rule three, no double dipping. Whatever you deduct here cannot also go on Schedule A, and if a marketplace subsidy paid part of the premium, you only deduct the part you paid. Three rules, and the calculator above applies all of them.
Why the deduction is the small lever
A 22% bracket gives you back 22 cents on the dollar. That is real money and you should take every penny. But it means a $700 premium still costs you $546. The bigger lever is the $700. Most self-employed people were told by a group broker that without a W-2 employee the marketplace is the only door, so they pay full price for a narrow network and call it a day. It is not the only door. In New York, a healthy owner can merge into a pre-established ERISA group plan at group rates with a true PPO. Outside New York, plans priced on your own health are on the table. Either way, the deduction still applies to whatever you end up paying. Take the write-off, then go get a better premium to write off. The full self-employed playbook is in Self-employed with no employees? You are not stuck with the marketplace, and the 1099 version is here.
Common questions about the self-employed health insurance deduction
How does the self-employed health insurance deduction work?
If you have net profit from self-employment (Schedule C, a farm, or guaranteed payments from a partnership) and you were not eligible for an employer-subsidized health plan through your own job or a spouse's, you can deduct 100% of the health, dental, and Medicare premiums you paid for yourself, your spouse, and your dependents. It is an above-the-line deduction on Schedule 1 of Form 1040, so it lowers your adjusted gross income and you do not have to itemize. The catch is the cap: the deduction cannot exceed your net profit minus one half of your self-employment tax (and minus any SEP, SIMPLE, or solo retirement contributions). Premiums above the cap can only go to Schedule A as itemized medical expenses, subject to the 7.5% of AGI floor.
How much is health insurance when you are self-employed?
More than a paycheck deduction, because there is no employer paying the bigger share. KFF's 2025 survey puts the full premium for single employer coverage at $9,325 a year, about $777 a month, and a self-employed person pays the whole thing. What you actually feel depends on the plan and the tax break: a $700 premium in the 22% bracket comes down to roughly $546 a month after the self-employed health insurance deduction, before any state savings. The plan itself is the bigger lever. A healthy owner in New York merged into a pre-established ERISA group plan often pays far less than the marketplace full price, and the deduction still applies on top.
Can I take the self-employed health insurance deduction and a marketplace subsidy?
Yes, but only on the premium you actually paid after the advance premium tax credit, and the two numbers affect each other: the deduction lowers your income, which raises the credit, which lowers the deduction. The IRS handles that loop with an iterative calculation in Publication 974, and tax software does it for you. What you cannot do is deduct the part of the premium the government paid. If your income sits near the 2026 subsidy cliff, run the free cliff calculator first, because the deduction can be the thing that pulls you back under the line.
What months count for the self-employed health insurance deduction?
Only the months you were not eligible to join an employer-subsidized health plan, either through your own W-2 job or your spouse's. Eligibility counts even if you did not enroll. So if your spouse's employer plan was open to you all year, the deduction is zero even though you bought your own coverage. If you left a job in June and were on your own from July on, six months count. The calculator lets you set the months so the deduction matches what your CPA will actually claim.
Does the deduction reduce self-employment tax too?
No. The self-employed health insurance deduction reduces your income tax, not your self-employment tax. Self-employment tax is figured on Schedule SE from your net profit before this deduction. That is why the calculator estimates your savings using only your income tax rate (federal plus state) and not the 15.3% self-employment rate. The one exception is an S corporation owner: premiums run through the W-2 as wages, which is a different mechanism, so ask your CPA which one applies to you.
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