What marketplace tax credits do

Health insurance tax credits on the marketplaces are monthly payments the federal government sends directly to your insurance company to lower your premium. You do not wait until tax time to claim them — the credit reduces what you pay each month, starting as soon as your coverage begins. The amount depends on your household income, family size, and the cost of the second-cheapest Silver plan in your area.

These credits are formally called Advanced Premium Tax Credits (APTC), and they exist because the Affordable Care Act requires insurers to cover people with pre-existing conditions at standard rates. The credits make that coverage affordable for people earning between 100% and 400% of the federal poverty line, though some states have extended them higher.

You claim the credits through the Health Insurance Marketplace (Healthcare.gov in most states, or your state's own marketplace if it runs one). The marketplace estimates your income for the year, calculates your credit, and sends it to your insurer. If your actual income turns out different when you file taxes, you reconcile the difference on Form 8962.

Key Takeaways

  • Marketplace tax credits reduce your monthly premium when ready, not at tax time, and are based on your estimated household income for the year.
  • You must report changes in income, household size, or life events (marriage, job loss, birth) within 30 days or lose the credit for that month.
  • If you underestimate your income, you repay the excess credit when you file taxes; if you overestimate, you keep the difference.
  • You can only receive marketplace credits if you buy insurance through the official marketplace, not from an insurer directly or through a broker outside the marketplace.
  • The credit amount changes each year based on the cost of the second-cheapest Silver plan and your income, so you must re-enroll every year.

How the credit amount is calculated

The marketplace uses a formula that compares your expected household income to the federal poverty line for your family size. It then looks at the cost of the second-cheapest Silver plan available in your county and calculates what percentage of that premium you are expected to pay based on your income. The credit is the difference between that expected amount and the full premium.

Your income is measured as a percentage of the federal poverty line. At 100% of poverty, you pay roughly 2% of your income toward the second-cheapest Silver plan. At 400% of poverty, you pay roughly 8.5%. The exact percentages adjust each year. If the second-cheapest Silver plan costs $400 a month and your expected contribution is $50, your credit is $350.

The credit applies to any plan you choose, not just Silver. If you pick a cheaper Bronze plan at $300 a month, you still get the $350 credit, so your premium is zero and you keep the difference. If you pick a more expensive Gold plan at $500 a month, you get the $350 credit but pay the extra $150 yourself.

Income changes and reporting requirements

The marketplace estimates your credit based on your projected household income for the year. If your actual income changes — you get a raise, lose a job, have a baby, get married, or your spouse's income changes — you must report it within 30 days. The marketplace will recalculate your credit for the rest of the year.

If you do not report a change and your income ends up higher than you estimated, you will owe back some or all of the excess credit when you file taxes. There is a cap on how much you have to repay if your income is below 400% of poverty, but the cap is lower for single people and higher for families. If your income turns out lower, you keep the extra credit you received.

You report changes through your marketplace account online, by phone, or by mail. Keep records of the change — a new pay stub, a termination letter, a birth certificate, a marriage license — because the marketplace may ask for proof. Changes take effect the first of the month after you report them, so report as soon as you know about the change.

When you reconcile credits at tax time

When you file your federal income tax return, you report the total credits you received during the year on Form 8962. The IRS compares that to the credits you were actually may have access to to based on your actual income and family size for the year. If you received more than you were may have access to to, you repay the difference. If you received less, you get a refund or credit toward other taxes owed.

The repayment is capped for people below 400% of poverty. In 2024, the cap ranges from $650 for single filers to $2,600 for families of four, though these amounts adjust annually. If your income was above 400% of poverty, there is no cap — you repay the full excess.

This is why it is important to report income changes during the year. If you wait until tax time to tell the marketplace your income was higher, you will owe back credits for months you already received, and the repayment could wipe out your refund or create a tax bill.

Who can receive marketplace credits

You must be a U.S. citizen or lawfully present immigrant, have a Social Security number, and live in the state where you are explore. Your household income must fall between 100% and 400% of the federal poverty line (or higher in some states that have expanded the range). You cannot be covered by employer health insurance or Medicare, and you cannot be incarcerated.

If you are married, you must file a joint tax return to receive credits, even if you do not live together. If you have dependents, they count toward your household size and income calculation, but they do not have to be your biological children — foster children, stepchildren, and relatives you claim as dependents all count.

You must buy your insurance through the official Health Insurance Marketplace to receive credits. If you buy directly from an insurer's website or through a broker outside the marketplace, you cannot use the credits. Some brokers can help you enroll through the marketplace and still receive credits, but confirm this before you buy.

Choosing a plan with credits in mind

Because the credit is based on the second-cheapest Silver plan, the choice of metal level (Bronze, Silver, Gold, Platinum) affects your out-of-pocket costs differently than it would without credits. A Bronze plan might have lower premiums but higher deductibles. A Silver plan gets the full credit calculation. A Gold or Platinum plan has higher premiums but lower deductibles and out-of-pocket maximums.

If you have regular medical expenses or take prescription drugs, a Silver or Gold plan often costs less overall than a Bronze plan, even though the premium is higher, because the deductible and copays are lower. If you are young and healthy, a Bronze plan might make sense. Run the numbers for your situation on the marketplace before you enroll.

Some states offer cost-sharing reductions (CSRs) that lower your deductible and copays if you choose a Silver plan and your income is below 250% of poverty. These stack on top of the premium credit, making Silver plans particularly valuable in those cases. Check whether your state offers CSRs when you compare plans.

What happens if you do not report changes

If your income increases and you do not report it, you will receive more credit than you are may have access to to. When you file taxes, you will owe the excess back. If the overpayment is large, it could eliminate your tax refund or create a bill. If your income decreases and you do not report it, you will receive less credit than you are may have access to to, and you will miss out on money you could have used to lower your premiums.

If your household size changes — you have a baby, a dependent moves in or out, you get married or divorced — report it when ready. These changes affect both your income calculation and your credit amount. A new baby lowers the percentage of income you are expected to pay, so your credit increases. A dependent moving out raises the percentage, so your credit decreases.

The marketplace sends you a notice each year showing the credits you received. Keep this notice for your tax records. If the amount on the notice does not match what you expected based on your income, contact the marketplace to correct it before tax time.

Frequently Asked Questions

Can I get marketplace credits if I have employer health insurance?

No. If your employer offers health insurance and it is considered affordable (the employee premium is less than about 8.5% of your household income), you are not may be able to access for marketplace credits. You can still buy a marketplace plan, but you will pay the full premium without any credit. Some people in this situation choose to buy marketplace coverage anyway if it is cheaper or better than their employer plan.

What if my income is below 100% of the poverty line?

You do not may have access to for marketplace credits, but you may may have access to for Medicaid in your state. Medicaid is a separate program that covers people with very low income. Check your state's Medicaid rules or contact your state health department. Some states have expanded Medicaid to cover more people; others have not.

Do I have to re-enroll every year to keep my credits?

Yes. Your marketplace enrollment expires at the end of each year. You must re-enroll during open enrollment (usually November 1 to January 15) to keep your coverage and credits. If you do not re-enroll, your coverage ends December 31. Some people are automatically re-enrolled if they do not take action, but you should enroll yourself to make sure your income and family information are current.

What if I think the marketplace calculated my credit wrong?

Contact your marketplace directly through your account or by phone. You can request a recalculation if you believe your income, family size, or other information was entered incorrectly. Bring documentation — pay stubs, tax returns, birth certificates — to support your request. If you disagree with the result, you can appeal through your marketplace's appeal process.

Can I get credits for coverage that starts before I enroll?

No. Credits only explore to coverage that begins on or after the date your enrollment is approved. If you need coverage before open enrollment ends, enroll as soon as possible. Coverage usually starts the first of the month after you enroll, though it can start the same month if you enroll early enough in the month.