Box 12c reports employer-provided health insurance premiums your employer paid on your behalf
Box 12c shows the dollar amount your employer contributed toward your health insurance coverage during the year. This is money your employer paid directly to your insurance company or health plan — not money that came out of your paycheck. The amount appears with a code "DD" next to it on your W2 form.
This box matters because it affects how you report income on your tax return and whether you owe taxes on that employer contribution. In most cases, employer-paid health insurance premiums are not taxable income to you, which means you do not pay federal income tax on that amount. However, the IRS needs to see the figure so it can verify your tax filing is correct.
Box 12c is separate from health insurance premiums you pay yourself through payroll deduction, which appear in Box 12 with code "FF" or "GG" depending on the type of plan. It is also different from the health insurance information reported on Form 1095-B, which your insurance company sends directly to you and the IRS.
Key Takeaways
- Box 12c shows what your employer paid toward your health insurance premiums, reported with code "DD".
- This amount is typically not taxable to you, so you do not owe federal income tax on it.
- The figure helps the IRS verify your tax return is accurate and matches what your employer reported.
- If you see an amount in Box 12c that you do not recognize, contact your employer's payroll or benefits department to confirm.
When Box 12c appears on your W2
Box 12c appears on your W2 only if your employer paid part or all of your health insurance premiums during the tax year. This is common for employers who offer group health plans and pay a portion of the cost for their employees. If you worked for multiple employers during the year, each one will report their own contributions on their separate W2 forms.
Some employers pay 100 percent of employee premiums; others pay a percentage and deduct the rest from your paycheck. Either way, the employer-paid portion shows up in Box 12c. If your employer did not contribute to your health insurance — for example, if you bought coverage on your own through the health insurance marketplace — Box 12c will be blank or show zero.
Self-employed people and business owners do not receive a W2, so Box 12c does not apply to them. Instead, they report health insurance costs as a deduction on Schedule C or Schedule SE when they file their tax return.
How Box 12c affects your taxes
In the vast majority of cases, the amount in Box 12c does not increase your taxable income. Employer-paid health insurance premiums are considered a tax-free fringe benefit under federal tax law. This means your employer can pay thousands of dollars toward your coverage without you owing income tax on that money.
However, there are narrow exceptions. If you are covered under a health reimbursement arrangement (HRA) or a health savings account (HSA), the rules differ slightly. Contributions to an HSA reduce your taxable wages and appear in Box 12 with code "W" rather than in Box 12c. HRA contributions may be reported differently depending on how your plan is structured.
If you have questions about whether your specific health plan is taxable, your employer's benefits department or a tax professional can clarify. The W2 form itself is designed to report the amount accurately, so you can rely on what appears in Box 12c when you file your return.
Box 12c versus other health insurance boxes on the W2
The W2 form reports health insurance information in several places, and it is easy to confuse them. Here is what each one means:
| Box or Code | What It Reports | Tax Treatment |
|---|---|---|
| Box 12c (Code DD) | Employer-paid health insurance premiums | Not taxable |
| Box 12 (Code FF) | Your payroll deductions for health insurance | Not taxable (pre-tax) |
| Box 12 (Code GG) | Taxable health insurance coverage | Taxable income |
| Boxes 9–11 | State and local tax information | Varies by state |
If you see an amount in Box 12 with code "FF", that is health insurance you paid for through pre-tax payroll deduction — money taken from your paycheck before taxes were calculated. Code "GG" is less common and means the coverage is taxable to you. Neither of these is the same as Box 12c.
What to do if Box 12c looks wrong
If the amount in Box 12c does not match what you expect, start by contacting your employer's payroll or benefits department. They can explain what coverage the amount represents and confirm whether it is correct. Common reasons for confusion include a mid-year change in your plan, a change in the employer's contribution rate, or coverage that started or ended partway through the year.
If you took unpaid leave, went on short-term disability, or had other changes in employment status during the year, your employer-paid premiums may have changed for part of the year. Your employer should have documentation of exactly when coverage began and ended and what the employer paid each month.
Do not assume an error without checking first. If your employer confirms the amount is correct but you still believe there is a problem, you can contact the IRS at 1-800-829-1040 or file Form 8949 with your tax return to report the discrepancy. Keep copies of any documentation your employer provides.
Box 12c and health insurance marketplace coverage
If you bought health insurance through the health insurance marketplace (also called the ACA marketplace or healthcare.gov) instead of through your employer, Box 12c will be blank. Marketplace coverage is not employer-provided, so there is nothing for your employer to report.
If you received a premium tax credit or cost-sharing reduction to help pay for marketplace coverage, that information appears on Form 1095-A, which you receive from the marketplace, not on your W2. You will need the 1095-A to reconcile your tax credits when you file your return.
Some people have both employer coverage and marketplace coverage in the same year — for example, if they changed jobs. In that case, you will have a W2 from each employer showing their contributions in Box 12c, and you may also have a 1095-A from the marketplace. Your tax professional can help you report both correctly.
Frequently Asked Questions
Do I need to report Box 12c on my tax return?
No. Box 12c is informational only. You do not enter it on your tax return form. The IRS uses it to verify that your employer reported the same information they reported to the government, but it does not change your tax calculation.
Can Box 12c reduce my taxable income?
No. Box 12c shows an amount your employer already paid, so it does not reduce your income further. However, if you paid part of your premiums through pre-tax payroll deduction (Code FF in Box 12), that amount does reduce your taxable wages.
What if I had two jobs and both reported Box 12c?
Each employer reports their own contribution on their own W2. You will receive a separate W2 from each employer, and each one will show Box 12c if that employer paid toward your health insurance. Add them together for your records, but you do not need to do anything special on your tax return.
Does Box 12c affect my may be able to access for tax credits or deductions?
Box 12c itself does not affect most credits or deductions. However, the fact that you have employer coverage can affect whether you are may be able to access for certain marketplace subsidies or the premium tax credit. If you are considering marketplace coverage, check the marketplace rules about employer coverage before you enroll.
What if Box 12c shows a very large amount?
Some employers offer generous health plans and pay a large portion of the premium. If the amount seems high, it is likely correct — employer contributions can easily be several thousand dollars per year depending on the plan and your family size. Contact your benefits department if you want to verify, but a large amount is not unusual.