If your health cover comes from an employer — yours or a spouse's — this article is mostly bad news, and you should read the middle section first. It is written for people buying their own.

Schedule C tells you where this deduction is not, and it does it in four words. Line 15:

Insurance (other than health)

Liability cover goes there. Errors and omissions, malpractice, business property, the policy your licence requires — all of it belongs on line 15. The premium that is probably larger than all of them together does not.

That is not a technicality. Where a deduction sits decides which taxes it reduces, and this one has been put somewhere that costs you a specific amount.

The short answer

The question The answer
Which form figures it Form 7206
Where it lands Schedule 1, line 17
Reduces income tax Yes
Reduces self-employment tax No — stated outright
Ceiling Your net profit from that business
Killed by Eligibility for an employer plan, month by month
Covers You, spouse, dependents, a child under 27

What it costs to sit on Schedule 1

The instructions for Form 7206 do not leave this to inference:

"You can't subtract the self-employed health insurance deduction when figuring net earnings for your self-employment tax from the business under which the insurance plan is established."

So it reduces taxable income and leaves Schedule C's net profit — the figure self-employment tax runs on — untouched. It behaves exactly like a retirement contribution on Schedule 1, and for the same structural reason.

If your profit sits below the Social Security wage base, that missing reduction is 15.3% of the premium you do not get. On $9,600 of premiums it is real money, and no arrangement of the same policy changes it.

The rule that quietly deletes months

Here is where most of the deduction is actually lost, and it is nothing to do with arithmetic:

"You can't take the deduction for any month you were eligible to participate in any employer (including your spouse's) subsidized health plan at any time during that month, even if you didn't actually participate."

Three things in one sentence, each of them a trap.

Eligible, not enrolled. Being offered the plan is enough. Turning it down changes nothing.

Your spouse's employer counts. Your business, your premiums, your Schedule C — and a job your spouse started in another city removes the deduction anyway.

Month by month. It is not an annual test, which is the one piece of good news in the sentence.

Run it on a real year. Premiums of $9,600 for the family. Your spouse starts a job in September and coverage is available to them from 1 September.

Months Status Deductible
January – August No employer plan available $9,600 × 8/12 = $6,400
September – December Spouse's plan available $0
The question to ask before a spouse accepts a jobNot "is their plan better than ours?" — "is it offered from the first of a month, and what does that do to eight months of my deduction?" The answer is worth having before the start date is agreed, not in April.

And the rule reaches further than a spouse. If you were eligible for any month, or part of a month, to participate in a subsidised plan maintained by the employer of your dependent — or of your child who was under 27 at year end — the amounts paid for coverage for that month do not count either.

What happens to the months you lose

They are not deductible here, and for most people they are not deductible anywhere.

The disallowed premiums become ordinary medical expenses. On Schedule A those are deductible only above 7.5% of adjusted gross income, and only if you itemise at all. A self-employed filer taking the standard deduction gets nothing for them.

That is why the months are worth counting rather than estimating.

Who and what is covered

"You may be able to deduct the amount you paid for health insurance for yourself, your spouse, and your dependents."

And a provision people miss entirely:

"The health insurance can cover your child who was under age 27 at the end of 2025, even if the child wasn't your dependent."

A 25-year-old on your policy who files their own return and is nobody's dependent still counts for this deduction.

The ceiling

The deduction cannot exceed the earned income from the business the plan is established under. A year with thin profit caps it whatever the premiums were, and the excess does not convert into something better — it falls back to the Schedule A route above.

This is the same shape as the tip deduction's net-profit cap and the retirement contribution limit: the headline is the premium, the binding number is the profit.

What to do with this

  1. Move health off line 15. It does not belong there and never did.
  2. Build the month grid — twelve rows, one column asking "was an employer plan available to me, a spouse, or a covered child in this month?"
  3. Ask before a spouse's start date, not after.
  4. Expect no self-employment tax relief, and stop planning as though there will be.

The premium is the easy number. The twelve rows above it are the deduction.

Common questions

Why can't I put health insurance on Schedule C?
Because line 15 excludes it in its own label: "Insurance (other than health)." Liability, errors and omissions, malpractice and business property cover belong there. Health does not.
Where does it go instead?
Form 7206 figures it and the result goes on Schedule 1. The instructions: "Use Form 7206 to determine any amount of the self-employed health insurance deduction you may be able to report on Schedule 1 (Form 1040), line 17."
Does it reduce my self-employment tax?
No, and the IRS says so directly: "You can't subtract the self-employed health insurance deduction when figuring net earnings for your self-employment tax from the business under which the insurance plan is established." It reduces income tax only.
My spouse's job offers a health plan but we didn't take it. Does that matter?
Yes, and this is the rule that catches most people. "You can't take the deduction for any month you were eligible to participate in any employer (including your spouse's) subsidized health plan at any time during that month, even if you didn't actually participate." Eligibility is enough.
Is it all-or-nothing for the year?
No — it is month by month. A spouse starting a job in September with coverage available from 1 September leaves January through August deductible and removes the rest.
Whose premiums count?
"You may be able to deduct the amount you paid for health insurance for yourself, your spouse, and your dependents." It also reaches "your child who was under age 27 at the end of 2025, even if the child wasn't your dependent."
Is there a ceiling?
Your net profit. The deduction is limited by the earned income from the business under which the plan is established, so a thin year caps it regardless of what the premiums were.
What happens to the part I can't deduct?
It does not vanish — it becomes an ordinary medical expense, which on Schedule A is only deductible above 7.5% of adjusted gross income and only if you itemise. For most self-employed filers taking the standard deduction that means it is worth nothing, which is why the months matter.
What about a child's or dependent's employer plan?
It counts too. If you were eligible for any month or part of a month to participate in a subsidised plan maintained by the employer of your dependent, or of your child who was under 27 at the end of the year, do not use amounts paid for coverage for that month.

This article is for educational purposes only and does not constitute tax, legal, or financial advice. Consult a qualified tax professional about your situation.

Official sources