Health insurance premiums paid by your employer are not taxable to you. Federal law excludes the value of employer-provided health coverage from your gross income, and the exclusion also keeps that value out of Social Security, Medicare, and federal unemployment tax.1Office of the Law Revision Counsel. 26 USC 106 – Contributions by Employer to Accident and Health Plans For most workers, that makes employer-sponsored coverage one of the largest tax-free benefits they receive. A few situations do flip the answer — mainly for people who own more than 2% of an S corporation and for employees whose plans cover a non-dependent domestic partner.
What the Tax Exclusion Actually Covers
The rule comes from Section 106 of the Internal Revenue Code, which says an employee’s gross income does not include employer-provided coverage under an accident or health plan.1Office of the Law Revision Counsel. 26 USC 106 – Contributions by Employer to Accident and Health Plans It works the same whether your employer pays the insurer directly or reimburses you for premiums you paid yourself.
The exclusion is broader than income tax. Section 3121(a)(2) takes employer health insurance payments out of the definition of “wages” for FICA, so no Social Security or Medicare tax is owed on the premium value either.2Office of the Law Revision Counsel. 26 USC 3121 – Definitions Federal unemployment tax works the same way. The IRS confirms that employer payments for accident or health insurance are not wages and are not subject to Social Security, Medicare, FUTA, or federal income tax withholding.3Internal Revenue Service. Employee Benefits
Who Your Tax-Free Coverage Can Include
The tax-free treatment applies to premiums your employer pays for your own coverage, your spouse’s coverage, and coverage for your dependents.4eCFR. 26 CFR 1.106-1 – Contributions by Employer to Accident and Health Plans It also covers your children who have not turned 27 by the end of the tax year, even if they don’t qualify as your dependents for other tax purposes.5Internal Revenue Service. Notice 2010-38 – Guidance on the Tax Exclusion for Adult Children Under Age 27 So an adult child who has graduated, works full-time, or lives on their own can still be on your plan tax-free, as long as they’re under 27.
Anyone outside those categories is where problems start. The most common case is a domestic partner who isn’t your tax dependent, covered in the taxable-situations section below.
Your Own Share of the Premium: Pre-Tax vs Post-Tax
What you contribute out of your own paycheck is a separate question, and the answer depends on how your employer set up the deductions. Most employers offer a cafeteria plan under Section 125, which lets you pay your share with pre-tax dollars.6Office of the Law Revision Counsel. 26 USC 125 – Cafeteria Plans The deduction comes out before income tax and FICA are calculated, so your taxable wages — and the amount in Box 1 of your W-2 — go down accordingly.
Without a Section 125 plan, your share comes out of after-tax pay. The employer’s portion is still excluded from your income, but your contribution gets no tax break.
The difference is real money. An employee in the 22% federal bracket paying $200 per month pre-tax saves roughly $550 a year in federal income tax alone, plus another $180 or so in FICA. Post-tax contributions get none of that. If you’re unsure which setup your employer uses, look at your pay stub. Pre-tax deductions reduce your taxable gross; post-tax deductions don’t.
When Employer-Paid Premiums Do Become Taxable
Section 106 is broad, but three situations push premium value back into taxable income.
You Own More Than 2% of an S Corporation
If you own more than 2% of an S corporation’s stock (or more than 2% of its voting power), health insurance premiums the corporation pays for you are treated as taxable wages and must be reported in Box 1 of your W-2.7Internal Revenue Service. S Corporation Compensation and Medical Insurance Issues Congress treats more-than-2% S corporation shareholders more like self-employed individuals than traditional employees when it comes to fringe benefits.3Internal Revenue Service. Employee Benefits
The premiums are subject to income tax but not to FICA or FUTA, as long as the coverage is offered under a plan available to employees generally or to a class of employees. That’s why they show up in Box 1 but not in Boxes 3 and 5.7Internal Revenue Service. S Corporation Compensation and Medical Insurance Issues
The offset is that a 2% shareholder can claim an above-the-line deduction for the premium amount on the personal return, similar to the self-employed health insurance deduction. The corporation must either pay the premiums directly or reimburse the shareholder, and the premium must be reported as W-2 wages. If the shareholder or their spouse was eligible for a subsidized employer health plan somewhere else, the deduction is unavailable.7Internal Revenue Service. S Corporation Compensation and Medical Insurance Issues When it all lines up, the income inclusion and the deduction roughly cancel each other out for federal income tax.
You Cover a Domestic Partner Who Isn’t Your Tax Dependent
When your employer covers a domestic partner who doesn’t qualify as your tax dependent, the fair market value of that partner’s coverage becomes “imputed income” added to your taxable wages. The math is straightforward: take the cost of the plan tier that includes your partner, subtract what employee-only coverage would cost, and the difference is your imputed income. Your employer adds that figure to your W-2 wages, and you owe income tax and FICA on it.
If your domestic partner does qualify as your tax dependent — meaning you provide more than half their support and they meet the other IRS dependent tests — the normal exclusion applies. The controlling question is dependency status, not the nature of the relationship. It’s worth checking dependency eligibility before adding a partner to your plan during open enrollment.
Your Self-Insured Plan Fails Nondiscrimination Testing
Employers that self-insure their health plans (paying claims directly rather than through an insurer) must satisfy nondiscrimination tests under Section 105(h). The tests make sure the plan doesn’t unfairly favor highly compensated individuals in eligibility or benefits.8Internal Revenue Service. Notice 2010-63 – Requirements Prohibiting Discrimination in Favor of Highly Compensated Individuals If a plan fails, highly compensated individuals lose the tax exclusion on the excess reimbursements they receive.9Office of the Law Revision Counsel. 26 USC 105 – Amounts Received Under Accident and Health Plans
“Highly compensated individual” has a specific definition here: one of the five highest-paid officers, a shareholder owning more than 10% of the employer’s stock, or someone in the top 25% of employees by pay.9Office of the Law Revision Counsel. 26 USC 105 – Amounts Received Under Accident and Health Plans If you’re a rank-and-file employee, a failed test doesn’t affect your tax-free treatment. The consequence lands only on the highly compensated group.
A Quick Note on HSA and HRA Contributions
Employer contributions to your HSA, HRA, or QSEHRA follow the same tax-free pattern as premium payments — they don’t count as income to you and are exempt from FICA and FUTA. Each account type has its own contribution limits and eligibility rules, and QSEHRAs in particular have annual dollar caps set each year by the IRS.10Internal Revenue Service. Employer’s Tax Guide to Fringe Benefits
Where Your Coverage Shows Up on Tax Forms
Even though the premium value isn’t taxable, it does appear on several tax documents. Knowing what each one is prevents confusion at filing time.
W-2 Box 12, Code DD
Your employer is required to report the total cost of your employer-sponsored health coverage in Box 12 of your W-2 under Code DD. The figure combines the employer’s share and any portion you paid. It’s informational only, and the IRS is explicit that reporting the cost does not make it taxable.11Internal Revenue Service. Form W-2 Reporting of Employer-Sponsored Health Coverage Don’t add the Code DD amount to your income when you file. If your employer offers a QSEHRA, those payments appear separately in Box 12 under Code FF.10Internal Revenue Service. Employer’s Tax Guide to Fringe Benefits
Forms 1095-B and 1095-C
You may also get Form 1095-B from your insurance carrier confirming that you had minimum essential coverage during the year.12Internal Revenue Service. About Form 1095-B, Health Coverage If your employer has 50 or more full-time employees, you’ll get Form 1095-C instead, which documents what coverage the employer offered and during which months.13Internal Revenue Service. 2025 Instructions for Forms 1094-B and 1095-B Neither form changes what you owe. Keep them with your tax records; you don’t attach them to your return.