S-Corp Medical Expense Reimbursement for Owners: W-2 and Deduction

S-corp medical expense reimbursement rules for owners hinge on a single mechanic: for a shareholder who owns more than 2% of the company, the S-corporation can pay or reimburse health insurance premiums and deduct the cost, but only if that amount is added to the shareholder’s W-2 wages first. The shareholder then takes a matching above-the-line deduction on their personal return. Out-of-pocket medical costs, HRAs, and HSA employer contributions don’t get the same treatment, and skipping the W-2 step breaks the deduction for both the company and the owner.¹

Who Counts as a More-Than-2% Owner

These rules apply to any S-corp employee who owns more than 2% of the outstanding stock, measured by voting power or share value, on any day of the tax year. Cross the line even briefly and Section 1372 treats you like a partner for fringe benefit purposes rather than a regular employee.²

The 2% threshold is easier to trip than owners expect. Constructive ownership rules attribute stock held by a spouse, children, grandchildren, or parents to you for this calculation.³ A shareholder directly owning 1.5% still qualifies as a greater-than-2% shareholder if a spouse holds another 1%.

Because Section 1372 treats these owners like partners, the tax-free fringe benefit rules that apply to regular employees don’t apply to them. Premiums the S-corp pays on their behalf can’t simply be excluded from income. They have to follow the W-2 path.

How the Reimbursement Flow Actually Works

The S-corp can pay the insurer directly or reimburse a shareholder who paid the premiums personally. Both work. But if the policy is in the shareholder’s name and the shareholder pays out of pocket, the S-corp must reimburse those payments during the same tax year. A shareholder who pays premiums personally and never runs the expense through the company cannot claim the above-the-line deduction.¹

The policy itself can sit in either the S-corp’s name or the shareholder’s name. What matters is that the money ultimately comes from the S-corp and shows up on the W-2.⁴ IRS Notice 2008-1 sets out the reimbursement rule: without S-corp payment and W-2 inclusion, the IRS treats the arrangement as if no business plan exists.⁵

What the W-2 Must Show

The premium amount goes in Box 1 as part of gross wages and is subject to income tax withholding. A common error is to also add the amount to Boxes 3 and 5. The IRS says the opposite. When premiums are paid under a plan covering employees or a class of employees and their dependents, the premium is not subject to Social Security, Medicare, or FUTA taxes, and does not belong in Boxes 3 or 5.¹

The premium amount also has to be reported in Box 14 with a descriptor such as “S-Corp Med Prem” or “SEHI.” Box 14 is the shareholder’s documentation of the exact premium figure and the evidence they need for the personal deduction.⁶

How the Owner Claims the Deduction

Once the premium is on the W-2, the shareholder reports the full Box 1 amount as wages on Form 1040 and claims the self-employed health insurance deduction on Schedule 1, Line 17. It’s above-the-line, so it reduces adjusted gross income directly, without itemizing.⁷

Many shareholders compute the deduction on the worksheet in the Form 1040 instructions. Form 7206 is required instead if the shareholder had multiple sources of self-employment income, used long-term care premiums, or filed Form 2555.⁴ Amounts claimed here can’t also be counted in the itemized medical expense deduction on Schedule A.⁸

Two Limits That Can Wipe Out the Deduction

The Spouse’s Employer Plan

The deduction is unavailable for any month the shareholder or the shareholder’s spouse is eligible to participate in a subsidized health plan maintained by any employer. Eligibility is enough. Actual enrollment isn’t required. If a spouse’s employer offers a subsidized group plan the shareholder or spouse could join, the deduction disappears for those months.⁹ A mid-year job change on the spouse’s side is the classic trap.

The Earned Income Cap

The deduction cannot exceed the shareholder’s earned income from the S-corporation, which is effectively the W-2 wages the S-corp pays. Take $30,000 in wages and pay $36,000 in premiums, and only $30,000 is deductible.¹⁰ The strategy of keeping owner salary very low to trim payroll taxes backfires when the salary falls below annual premium cost.

Which Premiums Qualify

The W-2 method and the above-the-line deduction cover medical, dental, and vision insurance premiums, plus qualified long-term care insurance.⁴ Coverage for the shareholder’s spouse, dependents, and children under age 27 (even if not dependents) also qualifies.¹¹

Medicare Premiums

Shareholders 65 and older can run Medicare Part B, Part D, and Medigap premiums through the same process. Form 7206 instructions confirm that voluntarily paid Medicare premiums qualify for the self-employed health insurance deduction.⁴ The S-corp reimburses the premiums, adds them to the W-2, and the shareholder deducts them.

Long-Term Care Insurance

Qualified long-term care premiums qualify subject to age-based annual caps. For 2026, the deductible per-person limits are:

Age 40 or younger: $500
Age 41 to 50: $930
Age 51 to 60: $1,860
Age 61 to 70: $4,960
Over age 70: $6,200

Premiums above these caps can’t be included in the self-employed health insurance deduction, though they may still be deductible on Schedule A if the shareholder clears the 7.5%-of-AGI medical floor.¹²

Arrangements That Don’t Work for More-Than-2% Owners

Because Section 1372 treats these shareholders like partners, several benefit structures that work for regular employees fail for owners.²

Health Reimbursement Arrangements (HRAs). Any reimbursement from a standard HRA to a 2% shareholder is taxable income, not a tax-free benefit. Individual Coverage HRAs (ICHRAs) follow the same partner-exclusion logic.
Health Savings Accounts (HSAs). The S-corp cannot make tax-free contributions to a 2% shareholder’s HSA. Any employer contribution is treated as taxable wages on the W-2. The shareholder can still make personal, tax-deductible HSA contributions with a qualifying high-deductible plan, but not on a pretax basis through the S-corp.

Using any of these to funnel tax-free medical benefits to a 2% shareholder can trigger the Section 4980D excise tax: $100 per day per affected individual, or $36,500 per year per shareholder.¹³

The Single-Employee Exception

One narrow carve-out matters for many small S-corps. The 4980D excise tax generally does not apply when only one current employee participates in the reimbursement arrangement. If the S-corp’s only employees are the shareholder and family members covered under one family plan, the IRS treats that as a single-participant arrangement exempt from the ACA market reform rules.¹ The W-2 inclusion requirement doesn’t change. The exception disappears the moment a non-family employee joins the arrangement.

What About Out-of-Pocket Medical Costs

The above-the-line deduction covers insurance premiums only. Deductibles, copays, prescriptions, and medical equipment aren’t premiums, and the S-corp can’t reimburse a 2% shareholder for them tax-free.

The only route for those costs is the Schedule A itemized medical expense deduction, which requires total medical expenses over 7.5% of AGI and itemized deductions greater than the standard deduction.¹⁴ With the 2026 standard deduction at $16,100 for single filers and $32,200 for joint filers, most shareholders won’t clear that bar in a typical year.¹⁵

Common Mistakes to Avoid

Skipping the W-2 entirely. The S-corp pays the premium but never reports it as wages, and the shareholder takes the deduction anyway. Both sides lose.
Adding the premium to FICA wages. Boxes 3 and 5 should not include it when the S-corp maintains a plan covering employees.¹
Forgetting Box 14. Without the notation, preparers who see wages in Box 1 with no breakdown often miss the deduction.
Ignoring a spouse’s employer plan. Mere eligibility in a subsidized plan kills the deduction for those months.⁹
Setting salary too low. Wages below the annual premium cost cap the deduction at wages, leaving the excess non-deductible.
Reimbursing without a paper trail. Notice 2008-1 requires that the S-corp ultimately pay the premium, whether directly or through documented reimbursement.⁵

The flow is short and every link matters. The S-corp pays or reimburses the premium, reports it in Box 1 and Box 14 (not Boxes 3 or 5), deducts it as compensation on Form 1120-S, and the shareholder claims the above-the-line deduction on Schedule 1. Break any step and the chain breaks for everyone.

1
Internal Revenue Service. S Corporation Compensation and Medical Insurance Issues
2
Office of the Law Revision Counsel. 26 USC 1372 – Partnership Rules to Apply for Fringe Benefit Purposes
3
Office of the Law Revision Counsel. 26 USC 318 – Constructive Ownership of Stock
4
Internal Revenue Service. Instructions for Form 7206 (2025)
5
Internal Revenue Service. IRS Notice 2008-1
6
Internal Revenue Service. 2025 Instructions for Form 1120-S
7
Internal Revenue Service. About Form 7206, Self-Employed Health Insurance Deduction
8
Internal Revenue Service. Form 7206 – Self-Employed Health Insurance Deduction
9
Office of the Law Revision Counsel. 26 USC 162 – Trade or Business Expenses, Section (l)(2)(B)
10
Office of the Law Revision Counsel. 26 USC 162 – Trade or Business Expenses, Section (l)(2)(A)
11
Office of the Law Revision Counsel. 26 USC 162 – Trade or Business Expenses, Section (l)(1)
12
Office of the Law Revision Counsel. 26 USC 162 – Trade or Business Expenses, Section (l)(2)(C)
13
Office of the Law Revision Counsel. 26 USC 4980D – Failure to Meet Certain Group Health Plan Requirements
14
Internal Revenue Service. Topic No. 502, Medical and Dental Expenses
15
Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026