Can S-Corp owners deduct their health insurance?

Yes, but only through a specific path. A more-than-2% S-Corp shareholder must have the corporation pay or reimburse the premiums and report them as wages in Box 1 of the W-2 (they stay out of Boxes 3 and 5, so no Social Security or Medicare tax applies). The owner then deducts the same amount above the line on Schedule 1. If the premiums never make it onto the W-2, the deduction is lost — this is the single most common error I correct for new S-Corp clients.

Does the self-employed health insurance deduction reduce my self-employment tax?

No. It reduces income tax only. The tax code specifically excludes this deduction when figuring the net earnings your self-employment tax is based on, so a sole proprietor still owes the full 15.3% on profit before the premium is subtracted. This matters in Florida, where there is no state income tax and self-employment tax is often the largest tax a self-employed person pays — the deduction is valuable, but it is worth less than people assume.

Can I deduct Medicare premiums as self-employed health insurance?

Yes. Once you are on Medicare, the premiums you pay for Part B, Part D, and a Medigap (supplemental) policy can be used to figure the self-employed health insurance deduction, as long as you have self-employment or S-Corp earned income to support it. Many self-employed people over 65 miss this because Medicare premiums do not look like a traditional health plan, but they qualify.

What if my health policy is in my own name, not the business's?

That is fine for a more-than-2% S-Corp shareholder. The policy can be in your personal name; what matters is that the S-Corp pays the premiums or reimburses you for them, and that the amount is reported as wages on your W-2. Sole proprietors likewise deduct premiums on a policy in their own name. The deduction turns on who ultimately pays and how it is reported, not whose name is on the policy.

Is the deduction limited if my business had a low-income year?

Yes. The deduction cannot exceed your earned income from the business — net profit for a sole proprietor, or W-2 wages for an S-Corp owner. If your premiums were larger than that income, the excess is not deductible above the line (it may be claimable as an itemized medical expense, subject to the usual floor). For S-Corp owners, this is one more reason a too-low salary can quietly cap your tax benefits.

Self-Employed Health Insurance Deduction: The S-Corp Strategy Most Owners Miss

Self-Employed Health Insurance Deduction: The S-Corp Strategy Most Owners MissBy Timothy LeGendre, CPA · Florida License #AC62625 · Last reviewed 2026-07-02A Florida CPA's guide to the self-employed health insurance deduction — how it works for sole proprietors versus S-Corp owners, and the mistakes to avoid.The self-employed health insurance deduction lets the self-employed write off premiums for medical, dental, and qualifying long-term-care coverage above the line on Schedule 1 (Form 1040), figured on Form 7206 — you get it whether or not you itemize, and it is not a Schedule C expense. The mechanics depend on entity. A sole proprietor claims it directly, capped at the net profit of the business the plan is established under. A more-than-2% S-Corp shareholder must have the S-Corp pay or reimburse the premiums and report them as W-2 Box 1 wages (but not Boxes 3 and 5, so no Social Security or Medicare tax), then deduct the same amount on Schedule 1 — if the premiums never hit the W-2, the deduction is lost entirely, which is the most common and costly S-Corp error. Critically, the deduction reduces income tax only; it does NOT reduce self-employment tax, which matters in no-income-tax Florida where SE tax is often the largest tax owed. Medicare premiums (Part B, Part D, Medigap) qualify, long-term-care premiums count up to age-based caps, no deduction is allowed for a month you were eligible for an employer or spouse's subsidized plan, and the marketplace Premium Tax Credit creates a circular calculation the IRS resolves with an iterative method.

Frequently asked questions

Can S-Corp owners deduct their health insurance?: Yes, but only through a specific path. A more-than-2% S-Corp shareholder must have the corporation pay or reimburse the premiums and report them as wages in Box 1 of the W-2 (they stay out of Boxes 3 and 5, so no Social Security or Medicare tax applies). The owner then deducts the same amount above the line on Schedule 1. If the premiums never make it onto the W-2, the deduction is lost — this is the single most common error I correct for new S-Corp clients.
Does the self-employed health insurance deduction reduce my self-employment tax?: No. It reduces income tax only. The tax code specifically excludes this deduction when figuring the net earnings your self-employment tax is based on, so a sole proprietor still owes the full 15.3% on profit before the premium is subtracted. This matters in Florida, where there is no state income tax and self-employment tax is often the largest tax a self-employed person pays — the deduction is valuable, but it is worth less than people assume.
Can I deduct Medicare premiums as self-employed health insurance?: Yes. Once you are on Medicare, the premiums you pay for Part B, Part D, and a Medigap (supplemental) policy can be used to figure the self-employed health insurance deduction, as long as you have self-employment or S-Corp earned income to support it. Many self-employed people over 65 miss this because Medicare premiums do not look like a traditional health plan, but they qualify.
What if my health policy is in my own name, not the business's?: That is fine for a more-than-2% S-Corp shareholder. The policy can be in your personal name; what matters is that the S-Corp pays the premiums or reimburses you for them, and that the amount is reported as wages on your W-2. Sole proprietors likewise deduct premiums on a policy in their own name. The deduction turns on who ultimately pays and how it is reported, not whose name is on the policy.
Is the deduction limited if my business had a low-income year?: Yes. The deduction cannot exceed your earned income from the business — net profit for a sole proprietor, or W-2 wages for an S-Corp owner. If your premiums were larger than that income, the excess is not deductible above the line (it may be claimable as an itemized medical expense, subject to the usual floor). For S-Corp owners, this is one more reason a too-low salary can quietly cap your tax benefits.