You do not need to enter Form 1095-C on your taxes or attach it to your return. The IRS instructs you to keep it with your tax records instead of sending it in with Form 1040.1Internal Revenue Service. Questions and Answers about Health Care Information Forms for Individuals The IRS already receives its own copy from your employer, so a duplicate from you serves no purpose. If your employer-sponsored plan was your only coverage during the year and nobody in your household received Marketplace subsidies, the form requires no action at all. File it with your records for at least three years, the general period during which the IRS can audit a return.2Internal Revenue Service. How Long Should I Keep Records?
There is one situation where the form matters a great deal before you file. If you or a family member had Marketplace coverage and received advance payments of the Premium Tax Credit, the codes on your 1095-C decide how much of that credit you get to keep.
When Form 1095-C Actually Affects Your Return
Under 26 U.S.C. ยง 36B, you are not eligible for the Premium Tax Credit during any month your employer offered you coverage that was both affordable and provided minimum value.3Office of the Law Revision Counsel. 26 USC 36B – Premium Tax Credit The codes on your 1095-C are how the IRS checks whether that offer existed. If you took advance PTC payments during months when the form shows an affordable, minimum-value offer, you have to repay the excess on Form 8962.4Internal Revenue Service. Reconciling Your Advance Payments of the Premium Tax Credit
A plan provides minimum value if it covers at least 60% of the total expected cost of covered benefits.5Internal Revenue Service. Minimum Value and Affordability For 2026, coverage is considered affordable if your required contribution for the lowest-cost self-only plan is no more than 9.96% of household income.6Internal Revenue Service. Rev. Proc. 2025-25 – Indexing Adjustments for the Premium Tax Credit and Required Contribution Percentage If your share of premiums stays at or below that percentage, the offer is affordable, and you cannot claim the credit for Marketplace coverage during those months even if you declined the employer plan.
Family members are tested separately. Since 2023, the affordability test for a spouse and dependents looks at what family coverage would cost, not just self-only coverage. Your household can qualify for Marketplace subsidies if the employer’s family plan exceeds the 9.96% threshold for 2026, even when your self-only cost falls under it.7HealthCare.gov. Affordable Coverage – Glossary When you check eligibility, compare the family coverage cost on your 1095-C against household income on its own, not lumped in with the self-only figure.
Why the Stakes Are Higher in 2026
For 2025 and earlier tax years, taxpayers with household income below 400% of the federal poverty line had caps on how much excess advance PTC they had to pay back. Those caps ran from $375 to $3,250 depending on income and filing status.8Internal Revenue Service. 2025 Instructions for Form 8962
Starting with plan year 2026, the caps are gone. Under Section 71305 of Public Law 119-21, any taxpayer who received more advance PTC than they were entitled to must repay the entire excess, regardless of income.9Centers for Medicare and Medicaid Services. Are There Limits to How Much Excess Advance Payments of the Premium Tax Credit Consumers Must Pay Back A lower-income taxpayer who might have owed a few hundred dollars in past years could owe thousands for the same mistake in 2026.
The practical consequence: if your employer began offering affordable coverage partway through the year but you stayed on a subsidized Marketplace plan through December, you owe back every dollar of advance credit received during the overlap. Reviewing the 1095-C against your 1095-A month by month is the only way to catch this before you file.
Reading the Codes That Decide the Credit
Part II of Form 1095-C is the part that matters for the Premium Tax Credit. It has three lines running month by month.10Internal Revenue Service. Instructions for Forms 1094-C and 1095-C (2025)
Line 14 uses a code to describe what your employer offered you. Code 1A signals a “qualifying offer” of affordable, minimum-value coverage for you plus available coverage for your spouse and dependents. Code 1E means minimum-value coverage was offered to you, your spouse, and your dependents. Code 1H means no coverage was offered that month.
Line 15 shows the monthly dollar amount you would have paid for the lowest-cost self-only plan on offer. That is the figure the IRS compares against the affordability threshold.
Line 16 adds context. Code 2C confirms you enrolled in the coverage. Other codes flag safe harbor methods your employer used to determine affordability, or indicate that you were not a full-time employee that month.
What to look for: months where Line 14 shows an offer of minimum-value coverage, Line 15 shows a self-only premium at or below 9.96% of your household income, and you were simultaneously receiving advance PTC on a Marketplace plan. Those are the months you will have to repay in full.
What to Do If You Never Received the Form
Since 2024, employers are no longer required to mail Form 1095-C to every full-time employee automatically. They can satisfy the rule by posting a clear notice on their website explaining that the form is available on request. Once you ask, the employer must provide it within 30 days or by January 31 of the following year, whichever is later.10Internal Revenue Service. Instructions for Forms 1094-C and 1095-C (2025)
Check your employer’s benefits portal or HR page for the notice, and request the form if you need it. You can still file your return without it. The IRS confirms you do not need to wait on a 1095-B or 1095-C before filing.11Internal Revenue Service. Gathering Your Health Coverage Documentation for the Tax Filing Season If you are reconciling advance PTC, though, get the form in hand first so you can verify the codes.
If Your Form Is Wrong
An incorrect Line 14 code can make it look like you had an affordable offer during months you did not, which leads the IRS to expect repayment of credits you were legitimately owed. Common errors include wrong coverage start dates, incorrect Social Security numbers, or a Line 14 code that misstates what was actually offered.
Only the employer can fix the form, so call HR or payroll. Once corrected, they will issue a replacement marked “CORRECTED.” If you are reconciling Premium Tax Credits, wait for the corrected form before filing. Filing with bad data generates an IRS notice demanding repayment, and unwinding that through correspondence is slower and more painful than a late filing. If the correction will run past the April deadline, request an extension.
What Happens If You Skip Form 8962
If you received advance Premium Tax Credit payments, the IRS expects Form 8962 with your return. An e-filed return without it is rejected outright.12Internal Revenue Service. How to Correct an Electronically Filed Return Rejected for a Missing Form 8962 Paper returns are accepted but followed by IRS letters requesting the form, and your refund waits until you comply. To clear a rejected e-file, refile with a completed Form 8962 or a written explanation of why it is not included. The IRS tracks advance PTC payments and will reconcile them either way.
A Note on State Returns
A handful of states with their own individual health insurance mandates impose reporting requirements even though the federal return does not. California, Massachusetts, New Jersey, Rhode Island, and the District of Columbia enforce mandates with penalty provisions; Vermont has a mandate but no financial penalty. In Massachusetts, employers issue a separate state form (MA 1099-HC) to enrolled employees. If you live in a mandate state and lacked coverage for part of the year, check your state’s filing instructions to see whether 1095-C data is needed to avoid a state-level penalty.