The Advance Premium Tax Credit, often shortened to APTC, is a federal subsidy for health insurance bought through the Marketplace. It goes straight to your insurer each month to lower what you pay in premiums. For 2026, you generally qualify if your household income falls between 100% and 400% of the federal poverty level, you file a federal tax return, you are a U.S. citizen or lawfully present, and you do not have access to other qualifying coverage such as affordable job-based insurance, Medicare, or Medicaid.1Internal Revenue Service. Eligibility for the Premium Tax Credit
The credit is calculated on the income you estimate at enrollment and reconciled against what you actually earn when you file taxes. For 2026, there is no cap on how much excess advance credit you may have to repay, so the income estimate matters more than it has in years.2Internal Revenue Service. Updates to Questions and Answers About the Premium Tax Credit
Who Qualifies in 2026
Income Between 100% and 400% of the Federal Poverty Level
Household income must land inside the 100%–400% FPL band for your family size.1Internal Revenue Service. Eligibility for the Premium Tax Credit In the 48 contiguous states, the 2026 guidelines put 100% FPL at $15,960 for a single person and $33,000 for a family of four. At 400%, those become $63,840 and $132,000. Alaska and Hawaii use higher thresholds, with 100% FPL for one person set at $19,950 and $18,360.3U.S. Department of Health and Human Services. 2026 Poverty Guidelines
Two edges of that band deserve attention. Below 138% FPL in a Medicaid expansion state, you will usually be routed to Medicaid rather than APTC. In non-expansion states, people between 100% and 138% FPL can get APTC through the Marketplace.4HealthCare.gov. Federal Poverty Level (FPL) At the top end, the enhanced rules that let higher-income enrollees qualify from 2021 through 2025 have expired. For 2026, income even slightly over 400% FPL wipes out the credit and requires repayment of every advance dollar received during the year.1Internal Revenue Service. Eligibility for the Premium Tax Credit
Citizenship, Tax Filing, and Dependency
You must be a U.S. citizen or lawfully present immigrant.5HealthCare.gov. Health Coverage for Immigrants You have to file a federal tax return for the year you take the credit. If you are married, you generally must file jointly; filing separately disqualifies you unless you meet the domestic abuse or spousal abandonment exception in the Form 8962 instructions.1Internal Revenue Service. Eligibility for the Premium Tax Credit
Someone who claims you as a tax dependent cannot pass the credit to you, but they can include you in their household when they apply for their own APTC.
How the Credit Amount Is Set
Two numbers drive the calculation: the local benchmark premium and your expected contribution.6Office of the Law Revision Counsel. 26 USC 36B – Refundable Credit for Coverage Under a Qualified Health Plan The benchmark is the second-lowest-cost Silver plan available to your household through the Marketplace. Your expected contribution is a percentage of annual household income, divided by 12. Subtract that monthly contribution from the benchmark premium and you have your credit for the month. If the benchmark premium is less than or equal to your expected contribution, the credit is zero.
Expected contribution percentages rise with income. Households near 100% FPL contribute roughly 2% of income, while those between 300% and 400% FPL contribute up to 9.96%.7Internal Revenue Service. Revenue Procedure 2025-25 These are higher than the temporary percentages in place from 2021 through 2025 under the American Rescue Plan Act and the Inflation Reduction Act, which set the floor as low as 0% and capped everyone at 8.5% of income. Those enhancements ended January 1, 2026.6Office of the Law Revision Counsel. 26 USC 36B – Refundable Credit for Coverage Under a Qualified Health Plan
You can apply the credit to any metal tier, not just Silver. A cheaper Bronze plan can mean the credit covers most or all of your premium; a Gold plan means you pay the difference. The credit itself doesn’t change with the plan you pick, because it’s always tied to the benchmark.
When Other Coverage Disqualifies You
Job-Based Insurance
If your employer offers coverage that is affordable and meets the minimum value standard, you cannot get APTC even if a Marketplace plan would be cheaper. Minimum value means the plan covers at least 60% of expected medical costs and includes substantial hospital and physician coverage. For 2026, employer coverage is affordable when your share of the lowest-cost self-only premium is less than 9.96% of household income.8HealthCare.gov. Minimum Value
Family members are tested separately. The affordability check for a spouse or child uses the cost of family coverage, not self-only. If the family premium exceeds 9.96% of household income, dependents and spouses can qualify for APTC through the Marketplace even when the employee cannot.9Centers for Medicare & Medicaid Services. How Is Affordability Determined for Offers of Employer-Sponsored Coverage
Medicare
Eligibility for premium-free Medicare Part A ends APTC eligibility, even if you choose not to enroll in Medicare.10HealthCare.gov. Changing from Marketplace to Medicare If you are close to 65 and on a subsidized Marketplace plan, plan the switch carefully. Premium assistance stops the moment you become Part A eligible.
Medicaid and CHIP
Being enrolled in Medicaid or CHIP disqualifies you from APTC. Simply declining Medicaid when you qualify doesn’t open the door to Marketplace subsidies; you have to actually be found ineligible.1Internal Revenue Service. Eligibility for the Premium Tax Credit If you apply for Medicaid and are denied, you can then move to the Marketplace with APTC.
How Household and Income Are Counted
Your Marketplace household includes you, your spouse if you are legally married and not legally separated, and anyone you claim as a tax dependent. Include a spouse and dependents even if they will not be on the health plan.11HealthCare.gov. Who’s Included in Your Household Children count at any age if you claim them, including college students living away. Relatives who share your home but aren’t your tax dependents don’t count. Household size shifts your FPL percentage, which shifts your subsidy.
Income is measured using modified adjusted gross income (MAGI): adjusted gross income plus untaxed foreign income, non-taxable Social Security benefits, and tax-exempt interest.12HealthCare.gov. What’s Included as Income The Social Security piece catches people most often. If part of your benefit isn’t taxed, you still count the full gross amount when estimating income for the Marketplace.
Self-employed applicants face a circular calculation: the self-employed health insurance deduction depends on the credit, and the credit depends on the deduction. The IRS resolves this through Worksheet X in Publication 974.13Internal Revenue Service. Publication 974, Premium Tax Credit
Reporting Changes During the Year
APTC is calculated on what you told the Marketplace at enrollment. Report any change within 30 days: a raise, a new job, marriage, divorce, a birth, a move, or gaining access to employer coverage.14GovInfo. Report Life Changes When You Have Marketplace Coverage If you miss the window, report the change late anyway.
Unreported income increases are the leading cause of surprise tax bills. The Marketplace keeps paying subsidies based on your old, lower estimate, and at tax time you owe the difference. With no repayment cap in 2026, the bill can be steep.15Internal Revenue Service. Premium Tax Credit – Claiming the Credit and Reconciling Advance Credit Payments Update online at HealthCare.gov, by phone through the Marketplace Call Center, or in person with a local assister. Mail is not accepted.16HealthCare.gov. How to Report Changes to the Marketplace
Reconciling at Tax Time
Everyone who receives APTC files Form 8962 with their federal return. The form compares the advance payments your insurer got to the credit you actually earned based on final income.17Internal Revenue Service. Reconciling Your Advance Payments of the Premium Tax Credit Earn less than estimated and you get the difference back as a bigger refund or smaller bill. Earn more and you owe the excess.
For 2026, that repayment is uncapped at every income level.2Internal Revenue Service. Updates to Questions and Answers About the Premium Tax Credit In prior years, filers under 400% FPL had their repayment limited on a sliding scale ranging from $375 for a single filer under 200% FPL to $3,250 for filers between 300% and 400% FPL.18Internal Revenue Service. Instructions for Form 8962 That cushion is gone, so accurate mid-year updates carry more weight than they used to.
Skipping Form 8962, whether by oversight or because you didn’t know it was required, can block you from receiving APTC in future years. The IRS and Marketplace share data, and an unfiled reconciliation flags the account.17Internal Revenue Service. Reconciling Your Advance Payments of the Premium Tax Credit
Enrolling Outside Open Enrollment
Outside the annual Open Enrollment Period, you can only sign up for APTC-subsidized coverage after a qualifying life event, and you generally have 60 days from the event to enroll.19HealthCare.gov. Getting Health Coverage Outside Open Enrollment Common triggers include:
- Losing job-based insurance, aging off a parent’s plan at 26, or losing Medicaid or CHIP eligibility
- Marriage, divorce, having or adopting a child, or the death of a household member
- Moving to a new ZIP code or county, or moving to the U.S. from another country
- Gaining U.S. citizenship, leaving incarceration, or being affected by a natural disaster
Coverage typically starts the first day of the month after you complete enrollment. Losing Medicaid or CHIP gives you a longer window: apply from 60 days before your coverage ends up to 90 days after.20HealthCare.gov. Staying Covered if You Lose Medicaid or CHIP
Appealing a Marketplace Decision
If the Marketplace denies, reduces, or ends your APTC and you disagree, file an appeal within 90 days of the date on your eligibility notice. Late filings are sometimes accepted with an explanation.21HealthCare.gov. How to Appeal a Marketplace Decision
Before appealing, check whether the Marketplace asked you for verification documents. Sending those in often resolves the issue and produces a new eligibility determination without a hearing. If you do go forward with the appeal, gather financial records, employer coverage letters, or proof of a Medicaid denial. You can request a hearing to present evidence, and if that goes against you, you may seek a higher-level review or help from a consumer assistance program in your state.