The self-employed health insurance deduction on Schedule 1, Line 17 is one of the most valuable above-the-line deductions for Florida small business owners. It reduces adjusted gross income (AGI) — not just taxable income — which means it can also unlock other AGI-sensitive benefits like the Section 199A QBI deduction and student-loan interest. Sole proprietors, partners in a partnership, and more-than-2% S-corp shareholders all qualify, but each follows slightly different documentation and ordering rules.
The eligible person and any spouse/dependent covered by the policy must not be eligible for subsidized employer-sponsored coverage from any employer (including the spouse's employer) during the months claimed.
The deduction is calculated month by month — only months when the person was not eligible for subsidized coverage qualify.
The deduction is limited to the net earnings from self-employment from the trade or business that establishes the plan. A sole proprietor with $40,000 of Schedule C profit cannot deduct $50,000 of premium — the deduction tops out at $40,000. Excess premium does not carry forward.
| Owner Type | Income Limit Source |
|---|---|
| Sole proprietor | Schedule C net profit, less ½ SE tax |
| Partner | Net earnings from SE on K-1, less ½ SE tax |
| >2% S-corp shareholder | W-2 Box 5 wages from the S-corp |
Above-the-line deductions reduce AGI itself, not just taxable income. That cascade matters in 2026 because AGI determines:
No — the Schedule 1 Line 17 deduction reduces income tax only, not SE tax. The premium amount is still in your net SE earnings on Schedule SE. Pre-2010 law allowed SE tax reduction briefly, but Congress did not renew it.
No — eligibility for subsidized employer-sponsored coverage (yours, your spouse's, or your dependent's) disqualifies you for any month that coverage was available, even if you declined it. The test is availability, not enrollment.
No — only premiums paid during months you had self-employment net earnings from the trade or business that established the plan. Pre-business-start premiums are personal medical expenses subject to the 7.5% AGI floor on Schedule A.
A licensed Florida broker plus a CPA can structure coverage to optimize Schedule 1 Line 17 treatment.
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