At a glance
- What it is
- Your S corp pays or reimburses your health insurance premiums and reports them as wages on your W-2, so you can take the self-employed health insurance deduction.
- What it saves
- Federal and Oklahoma income tax on every premium dollar, with no Social Security or Medicare tax on the premiums.
- Best fit
- S corp owners with more than 2% ownership.
- Main catch
- The premiums have to be paid or reimbursed by the S corp and land on your W-2 for the year. Miss that and the deduction can be lost.
- When to review
- Before your last payroll of the year, so the premiums make it onto your W-2.
Key takeaways
- More-than-2% S corp owners can fully deduct health premiums when the S corp pays or reimburses them and reports them on the W-2.
- The premiums go in W-2 Box 1 but aren’t Social Security or Medicare wages, so no payroll tax applies to them.
- In the illustrative example, $18,000 of premiums saves about $4,320 federal and $810 Oklahoma personal income tax.
- The catch: premiums missing from the W-2 by year-end, or months eligible for a subsidized employer plan, can cost the deduction.
The numbers
Picture an S corp owner who owns 100% of the business and pays $18,000 a year in family health insurance premiums. The owner takes the standard deduction. Business tax and personal tax are shown separately.
Business tax (the S corp)
For illustration purposes. Tax law may change, which may change these calculations slightly.
| Paid personally | Through the S corp | |
|---|---|---|
| Premiums deducted on the S corp return (as wages) | $0 | $18,000 |
| Social Security and Medicare tax on the premiums | n/a | $0 |
Personal tax (federal and Oklahoma)
| Paid personally | Through the S corp | |
|---|---|---|
| Premiums deducted on your return | $0 | $18,000 |
| Federal income tax saved (24% bracket) | $0 | about $4,320 |
| Oklahoma income tax saved (4.5%) | $0 | about $810 |
Here is how it nets out. The S corp deducts the $18,000, so your share of its profit drops by $18,000. Your W-2 wages go up by the same $18,000, and the self-employed health insurance deduction takes it right back off. The result is $18,000 less taxable income: $18,000 × 24% = $4,320 federal, and $18,000 × 4.5% = $810 Oklahoma. Savings are a bit lower if you also claim the QBI deduction, since the premiums reduce qualified business income.
Compare that with simply raising your salary by $18,000 to cover the premiums yourself. That route would cost $18,000 × 15.3% = $2,754 in payroll tax, on top of the income tax.
Paid personally, premiums usually count only as an itemized medical deduction above 7.5% of your income, which most owners never reach. The setup is what turns them into a full deduction.
Could this strategy work for your business?
In a free tax analysis, your tax strategist checks whether it fits and what it could save, using your real numbers.
How it works
- The S corp pays or reimburses the premiums. It can pay the insurer directly, or reimburse you for a policy in your own name, from the business account.
- The premiums go on your W-2. They’re added to Box 1 wages, but left out of Social Security and Medicare wages, so no payroll tax applies.
- The S corp deducts them. They’re treated as wages paid to you.
- You take the self-employed health insurance deduction. On your Form 1040, the premiums come back off as an above-the-line deduction, whether or not you itemize.
Who it fits
- S corp owners with more than 2% ownership who pay for their own health, dental, or long-term care insurance.
- Owners who have been paying premiums from their personal account and deducting nothing, or deducting them on the wrong line.
- Family members of an owner who work in the business. Under the attribution rules, a spouse, child, parent, or grandparent of a 2% owner is treated as a 2% owner too.
When it doesn’t fit
- Months when you were eligible for a subsidized health plan through another employer, including a spouse’s employer. Those months don’t qualify.
- Years when the S corp pays you no wages. The deduction can’t exceed your earned income from the business.
- Sole proprietors and partners, who follow different rules for the same deduction.
The rules
- The plan has to be established by the S corp. The IRS treats it that way when the S corp pays or reimburses the premiums and reports them on your W-2 for the same year (IRS Notice 2008-1).
- W-2 reporting. Premiums go in Box 1. They aren’t Social Security or Medicare wages.
- Earned income limit. The deduction can’t exceed the wages the S corp pays you.
- No other subsidized coverage. The deduction is figured month by month and isn’t allowed for months you could have joined a subsidized employer plan.
Risks to weigh
- Missing the W-2. The most common mistake. If the premiums aren’t on the W-2 by year-end, fixing it later means corrected payroll filings, and the deduction may be at risk.
- Reimbursing after year-end. Reimbursements need to happen during the year and be recorded properly.
- Spouse’s coverage. Eligibility for a spouse’s employer plan can eliminate the deduction for those months, even if you don’t enroll.
How we handle it for clients
With a Cannon & Brown tax plan, we confirm your premiums are being paid or reimbursed by the S corp, make sure they reach your W-2 before the last payroll of the year, and check that the deduction lands correctly on your personal return. Because our technology keeps your numbers current all year, we can test this strategy against your real numbers and adjust it as your business changes.
Illustrative example. The business owner and figures on this page are hypothetical, used to explain how the strategy works. They are not a client and not a promise of results. The example assumes one 100% owner, $18,000 of premiums, a 24% federal bracket, a 4.5% Oklahoma rate, the standard deduction, and wages at least equal to the premiums. This page is educational and is not tax advice for your situation; tax rules and limits change.
Brooks leads Cannon & Brown Tax Advisors, a forward-thinking tax firm serving business owners in Oklahoma and beyond. He builds year-round tax strategies that help business owners keep more of what they earn and reach their goals. More about Brooks
Common questions about shareholder health insurance
Can I deduct health insurance if the policy is in my own name?
Yes, if the S corp reimburses you for it from the business account during the year and the premiums are reported on your W-2. The S corp can also pay the insurer directly.
What if my health insurance didn’t make it onto my W-2?
Fixing it after year-end means corrected payroll filings, and the deduction may be at risk. It’s the most common mistake, which is why the setup should be checked before the last payroll of the year.
Does my spouse’s employer health plan affect the deduction?
It can. The deduction is figured month by month and isn’t allowed for months you were eligible for a subsidized plan through another employer, including a spouse’s, even if you don’t enroll.
Does this work for sole proprietors or partners?
Not in the same way. Sole proprietors and partners follow different rules for the same deduction, so the S corp W-2 setup applies only to S corp owners.
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