A premium tax credit reduces what you pay each month for health insurance bought through the federal marketplace or your state's marketplace

A premium tax credit is money the federal government sends directly to your insurance company to lower your monthly bill. You do not receive it as a check or tax refund — it works as a subsidy that shrinks the cost of your plan before you pay anything. The credit is based on your household income and the cost of the second-cheapest Silver plan available in your area.

The credit exists because the Affordable Care Act requires most people to have health insurance, but recognizes that premiums can be unaffordable. If your income falls between 100% and 400% of the federal poverty line (the exact range varies by family size), you may receive a credit. The amount you get depends on how much the government thinks you should pay as a percentage of your income, minus what the second-cheapest Silver plan costs in your zip code.

You claim the credit when you enroll in a plan through Healthcare.gov or your state marketplace. The marketplace calculates your estimated credit based on the income you report, and that amount is applied to your bill immediately — you do not wait until tax time. If your actual income at the end of the year differs from what you estimated, you settle the difference when you file taxes.

Key Takeaways

  • Premium tax credits are federal subsidies sent directly to your insurance company to lower your monthly premium, not refunds you receive later.
  • You must enroll through Healthcare.gov or your state marketplace to receive a credit; plans bought outside the marketplace do not may have access to.
  • The credit amount depends on your household income and family size, and is reduced if your income rises during the year.
  • You must report changes in income, household size, or address to the marketplace within 30 days, or you may owe money back at tax time.
  • If you receive more credit than you were may have access to to, you repay the difference when you file your tax return.

How the credit amount is calculated

The marketplace uses a formula based on two numbers: your household income and the cost of the second-cheapest Silver plan in your area. The government has set a sliding scale that says you should pay a certain percentage of your income toward health insurance — this percentage rises as income rises. For 2024, someone at 150% of the poverty line should pay roughly 0% of their income toward premiums, while someone at 400% of the poverty line should pay roughly 8.5%.

The credit fills the gap between what you are expected to pay and what the second-cheapest Silver plan actually costs. If that plan costs $400 a month and you are expected to pay $50, your credit is $350. If you choose a cheaper Bronze plan instead, you still get the $350 credit — but your out-of-pocket cost drops further. If you choose a more expensive Gold or Platinum plan, the credit stays the same and you pay the difference yourself.

Your income estimate matters enormously. The marketplace asks you to predict your household income for the year ahead. If you underestimate and earn more than you said, you will owe back some or all of the credit when you file taxes. If you overestimate and earn less, you may receive a refund. This is why reporting changes — a job loss, a raise, marriage, or a child born — within 30 days is critical.

Who can receive a premium tax credit

You must meet three conditions: your household income must fall between 100% and 400% of the federal poverty line for your family size; you must be a U.S. citizen or lawfully present immigrant; and you must enroll in a plan through the official marketplace (Healthcare.gov, your state marketplace, or a state-run plan). Plans bought directly from an insurance company, through an employer, or through a broker do not may have access to for the credit.

The poverty line changes each year. For 2024, 100% of the poverty line for a single person is roughly $14,600 annually, and 400% is roughly $58,400. For a family of four, 100% is roughly $30,000 and 400% is roughly $120,000. These figures are updated annually by the Department of Health and Human Services. If your income is below 100% of the poverty line, you may be covered by Medicaid instead, depending on your state.

If you are claimed as a dependent on someone else's tax return, you cannot receive a credit yourself. If you are married, you must file taxes jointly to claim the credit. If you have access to affordable employer coverage (generally defined as costing less than 8.5% of your household income), you are not may be able to access for the credit, though there are narrow exceptions.

What happens if your income changes during the year

The credit is based on your estimated income for the entire year. If your actual income ends up higher or lower, you must report the change to the marketplace within 30 days. The marketplace will recalculate your credit and adjust your monthly bill going forward. If you do not report the change, you will discover the discrepancy when you file taxes.

Common changes that require reporting include a job loss or new job, a raise or bonus, marriage or divorce, a child born or adopted, a household member moving out, or a change in self-employment income. You report these through your marketplace account online, by phone, or by mail. The process usually takes a few business days, and your new credit amount takes effect the following month.

If you receive more credit than you were may have access to to because your income was higher than you estimated, you repay the excess when you file your tax return. The repayment is capped — in 2024, single filers repay no more than $650, and families repay no more than $1,300 — but only if your income was between 100% and 200% of the poverty line. Above 200%, there is no cap, and you repay the full amount owed.

Premium tax credits versus cost-sharing reductions

Premium tax credits and cost-sharing reductions are two separate subsidies that work together. The credit lowers your monthly premium. Cost-sharing reductions lower your deductible, copayments, and coinsurance — the money you pay when you actually use care. You receive cost-sharing reductions only if you enroll in a Silver plan and your income is below 250% of the poverty line.

This is why Silver plans are often the best choice for people with lower incomes: the credit reduces the premium, and the cost-sharing reduction makes the plan's out-of-pocket costs much lower. A Bronze plan has a lower premium but no cost-sharing reduction, so your deductible and copays stay high. A Gold or Platinum plan has lower out-of-pocket costs but a higher premium that the credit does not fully cover.

How to enroll and claim your credit

You enroll through Healthcare.gov (for most states) or your state's marketplace website. During open enrollment — usually November 1 through January 15 each year — you create an account, report your household income and size, and choose a plan. The marketplace calculates your credit automatically and shows you the net cost of each plan after the credit is applied. You see the credit amount on your enrollment confirmation.

The credit is sent to your insurance company each month, and your bill reflects the reduced amount. You do not have to do anything else during the year unless your income or household changes. When you file your tax return, you will receive a Form 1095-B from your insurance company showing the credit you received, and you reconcile this with your actual income on your tax return.

If you miss open enrollment, you can still enroll if you have a may have access to life event — losing job-based coverage, getting married, having a child, moving to a new state, or experiencing a natural disaster. You have 60 days from the event to enroll. If you do not have a may have access to event and miss open enrollment, you cannot enroll until the next open enrollment period, unless your state offers a separate enrollment window.

Common mistakes that cost you money

Underestimating your income is the most expensive mistake. If you predict $40,000 but earn $50,000, you may owe back hundreds or thousands of dollars at tax time. The safest approach is to estimate conservatively — use last year's tax return as a starting point and add any expected raises or new income. If you are self-employed or have variable income, use an average of recent months.

Failing to report changes is the second most costly error. A job loss, a spouse's new income, a child born, or a household member moving out all change your credit. If you do not report these within 30 days, your credit will be wrong for the rest of the year, and you will owe or receive a large adjustment at tax time. Set a phone reminder when something changes.

Buying a plan outside the marketplace disqualifies you from the credit entirely. Some brokers and websites advertise "cheap plans" that are not sold through the official marketplace — these do not may have access to. Always enroll through Healthcare.gov or your state marketplace to receive the credit.

Frequently Asked Questions

Can I get a premium tax credit if I have employer health insurance?

No, if your employer offers coverage that is considered affordable (costing less than about 8.5% of your household income), you are not may be able to access for a marketplace credit. However, if your employer's plan is unaffordable or does not cover your spouse or children, you may be able to enroll in a marketplace plan and receive a credit for those family members.

What happens if I do not report a job loss or income change?

Your credit will remain based on your old income estimate. If your actual income is lower, you will have overpaid and may receive a refund when you file taxes. If your actual income is higher, you will owe back the excess credit, subject to the annual repayment cap if your income is below 200% of the poverty line.

Can I change my plan during the year if my credit amount changes?

Yes. If your income changes and your credit is recalculated, you can switch to a different plan during the same year through your marketplace account. You can also switch plans during the annual open enrollment period regardless of income changes.

Do I have to file taxes if I receive a premium tax credit?

Yes. Even if you normally would not file taxes because your income is too low, you must file a return if you received a premium tax credit during the year. This allows you to reconcile the credit you received with the credit you were actually may have access to to based on your final income.

What if I move to a different state?

You must report the move to the marketplace within 30 days. Your credit will be recalculated based on the cost of plans in your new state. You can enroll in a new plan in your new state's marketplace immediately, even outside open enrollment, because moving is a may have access to life event.