The Self-Employed Health Insurance Deduction (and Who Can't Take It)
Premiums come off the top of your income, not as an itemised deduction — but one common situation disqualifies you entirely, and it catches married freelancers.
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For a freelancer buying their own cover, health insurance is often the single largest cost that an employer used to absorb invisibly.
The deduction that offsets it is unusually good — and has one disqualifier that catches people every year.
It comes off the top
Most medical expenses are an itemised deduction, subject to a percentage-of-income floor, which means most people get nothing.
The self-employed health insurance deduction is different. It is an above-the-line deduction: it reduces your adjusted gross income directly, whether or not you itemise.
That matters twice over. It lowers your taxable income, and because AGI drives eligibility for other things, lowering it can unlock benefits that phase out higher up.
Premiums for you, your spouse, your dependants and children under 27 all qualify. Medical, dental and qualifying long-term care.
The disqualifier
Here is the one to check before assuming you have this deduction.
You cannot take it for any month you were eligible to participate in a subsidised health plan — yours, from another job, or your spouse's.
Eligible, not enrolled
The test is eligibility, not enrolment. If your spouse's employer offers a plan you could have joined and you chose your own instead, you are disqualified for those months — even though you never used their coverage.
This is month by month, not all or nothing. Leaving a job in March means the months from April onward can still qualify.
It cannot exceed your profit
The deduction is capped at your net self-employment income after the deductible half of self-employment tax.
A business that made $6,000 profit cannot deduct $9,000 of premiums. The excess is not lost entirely — it may be claimable as a regular itemised medical expense — but for most people that means it disappears.
This bites hardest in a first year, when premiums are at their normal level and profit is not.
It does not touch self-employment tax
Worth repeating because the expectation is so common.
This deduction reduces income tax. Self-employment tax is charged on your profit, and this comes out after that calculation. Unlike an ordinary business expense, it saves you only income tax, not the roughly 14% of self-employment tax an ordinary business expense also saves.
That is a genuine difference: a $1,000 business expense and $1,000 of health premiums are not worth the same to you.
The marketplace subsidy interaction
If you buy through the marketplace and receive a premium tax credit, you can only deduct the portion you actually paid — not the subsidised amount.
There is also a circularity: the deduction lowers your income, which can increase the subsidy you were entitled to, which lowers the deductible amount. Tax software handles the iteration. It is worth knowing it exists if the numbers seem not to settle.
The one to check in November
Open enrolment is when this decision is actually made. Two things worth doing:
Check whether an HSA-eligible plan makes sense. HSA contributions are also above the line, the money grows untaxed, and qualified withdrawals are untaxed — the only triple-tax-advantaged account available.
Recalculate rather than renewing. Premiums move, your income moves, and the subsidy cliff moves with both.
The take-home pay calculator has a field for premiums and retirement contributions, so you can see what a plan actually costs you after tax rather than at sticker price.