Step-by-step · 3 min read
Health insurance for S corp owners
Health insurance for an S corp owner is deductible, but only if it is handled in a specific way. The premiums run through the company and appear on your W-2, then you take the deduction on your personal return. Paying personally and skipping those steps loses the deduction.
- Who it fits
- Owners of more than 2% of an S corp who buy health insurance.
- Figures
- 2026 tax year
The key rule
The S corp pays or reimburses the premiums and adds them to your W-2 box 1 wages, but not to Social Security or Medicare wages.
How it works
The IRS treats an owner of more than 2% of an S corp like a partner for fringe benefits. Health insurance paid for you is taxable wages, but it is exempt from Social Security and Medicare tax, and you can then deduct it as self-employed health insurance on your personal return. The net effect is a deduction for the full premium, provided the steps are followed.
The 2% test includes shares owned by your spouse, children, parents and grandparents. Family members on payroll who are attributed ownership follow the same rules.
3 steps
Pay or reimburse through the S corp
The company can pay the premium directly or reimburse you each month. Include dental and vision; spouse and dependents' premiums count too.
Tell your payroll provider before the last payroll
They add the premiums to your W-2 box 1 and usually show them in box 14. This must happen before year-end W-2s are issued.
Deduct it personally
We take the self-employed health insurance deduction on your 1040.
Example
A family plan
You pay $2,000 a month for family coverage. The S corp reimburses $24,000 over the year and adds it to box 1 of your W-2. Your Social Security and Medicare wages do not change. On your 1040 you deduct $24,000 as self-employed health insurance, so the premiums are fully deducted.
Common mistakes
- Paying premiums personally without running them through the S corp.
- You cannot take the deduction for any month you were eligible for a subsidized plan through a spouse's employer.
- Adding the premiums to Social Security and Medicare wages, which creates unnecessary payroll tax.
- The deduction cannot exceed your W-2 wages from the S corp.
Key dates
- Last payroll of the year
- Premiums must be added to your W-2.
Questions we hear
Does an HSA contribution work the same way?
Largely, yes. Employer HSA contributions for a more-than-2% owner are added to box 1 wages and you deduct them personally.
Can the S corp set up a group plan?
Yes. A group plan bought by the S corp works with the same W-2 reporting.
General education for TaxSquad clients, not advice for your situation. Rules and figures change. Talk to us before acting on this guide.