A healthcare subsidy is financial assistance from the federal government that lowers the cost of health insurance you buy through the Affordable Care Act (ACA) Marketplace. These subsidies come in two forms: one reduces your monthly premium, and the other reduces what you pay out of pocket when you actually use care. Currently, 92% of Marketplace enrollees receive some form of premium subsidy, and eligibility is based primarily on your household income relative to the federal poverty level.
The Two Types of Subsidies
Premium tax credits and cost-sharing reductions work differently, and understanding the distinction matters because they affect separate parts of your healthcare costs.
Premium tax credits lower your monthly insurance bill. The government calculates how much you’re expected to contribute toward premiums based on your income, then covers the gap between that amount and the cost of a benchmark plan in your area. You can apply this credit in advance so your monthly payment drops immediately, or you can claim it when you file your taxes.
Cost-sharing reductions lower the amount you pay when you visit a doctor, fill a prescription, or have a procedure. They reduce your deductible, copays, coinsurance, and out-of-pocket maximum. The catch: you only get cost-sharing reductions if you enroll in a Silver-tier plan. If you pick a Bronze, Gold, or Platinum plan, you won’t receive them regardless of your income.
How Premium Tax Credits Are Calculated
The math behind premium tax credits revolves around something called the benchmark plan, which is the second-lowest-cost Silver plan available in your area. The government determines what percentage of your household income you’re expected to pay toward that benchmark plan’s premium. Your subsidy equals the difference between the benchmark premium and your expected contribution.
Here’s what makes this flexible: you can apply your subsidy to any metal-tier plan on the Marketplace, not just the benchmark. If you choose a plan that costs less than the benchmark, your monthly premium could be very low or even zero. If you choose a more expensive Gold plan, your subsidy still applies, but you’ll pay the difference out of pocket. In areas where only one Silver plan exists, that plan serves as the benchmark.
Who Qualifies Based on Income
Eligibility hinges on your household income as a percentage of the federal poverty level (FPL). The FPL changes each year and varies by family size, so the actual dollar thresholds shift annually.
For premium tax credits, you generally need a household income of at least 100% of FPL. Through 2025, there is no upper income cap. The American Rescue Plan Act temporarily eliminated the old ceiling of 400% FPL, meaning higher earners can still qualify if the benchmark plan in their area would otherwise cost more than the designated share of their income. This expansion is set to expire after 2025, which would restore the 400% FPL cutoff starting in 2026. People earning above that threshold would lose subsidy eligibility entirely.
For cost-sharing reductions, the income window is narrower:
- Up to 150% FPL: Your Silver plan covers roughly 94% of costs, leaving you responsible for about 6%.
- 151% to 200% FPL: Coverage rises to about 87%, with you paying around 13%.
- 201% to 250% FPL: Coverage is about 73%, compared to 70% for a standard Silver plan.
A standard Silver plan without cost-sharing reductions covers about 70% of a typical enrollee’s costs. For people at the lowest income levels, the jump to 94% coverage represents a dramatic reduction in out-of-pocket spending.
Employer Coverage Can Disqualify You
If your employer offers health insurance that meets certain affordability and coverage standards, you generally can’t receive Marketplace subsidies. In 2025, employer coverage is considered “affordable” if your share of the monthly premium for the cheapest available plan is less than 9.02% of your household income. That threshold rises to 9.96% in 2026.
If your employer’s plan exceeds that affordability percentage, or if it doesn’t meet minimum coverage requirements, you may qualify for Marketplace subsidies instead. This is worth checking carefully, because many people assume employer coverage automatically disqualifies them when it might not.
What Happens at Tax Time
If you receive your premium tax credit in advance (which most people do), you’ll need to reconcile it when you file your federal tax return. The Marketplace estimates your subsidy based on the income and family size you project when you enroll. If your actual income for the year turns out differently, the numbers won’t match.
If you earned more than you estimated, you may have received too much in advance credits and will owe some back. For households under 400% FPL, the repayment amount is capped. If you earned less than expected, you’ll receive additional credit as part of your tax refund. This reconciliation happens on IRS Form 8962, which you file with your return.
This is why reporting income changes to the Marketplace during the year matters. If you get a raise, lose a job, or have a baby, updating your information helps keep your advance payments closer to what you’ll actually qualify for, so you avoid a surprise tax bill or leave money on the table.
The 2026 Subsidy Cliff
The enhanced subsidies currently available are temporary. Congress expanded them in 2021 through the American Rescue Plan Act, then extended them through 2025 via the Inflation Reduction Act. Unless Congress acts again, two significant changes take effect in 2026.
First, the income cap returns. People earning above 400% of FPL will no longer qualify for any premium tax credit. Second, the contribution percentages at every income level revert to their original, less generous schedule, meaning even people who still qualify will receive smaller subsidies and pay more for the same coverage. Enrollment among people above 400% FPL is expected to be particularly sensitive to these changes, since they would go from subsidized coverage to paying full price.
How to Check Your Eligibility
You can find out whether you qualify by filling out an application on HealthCare.gov (or your state’s Marketplace if it runs its own exchange). The application asks for your estimated household income, family size, and whether you have access to employer coverage or other qualifying insurance. Based on your answers, it calculates your estimated premium tax credit and tells you whether you qualify for cost-sharing reductions.
You don’t need to wait for open enrollment to check. The application will show your estimated subsidy amount and let you compare plans with that financial assistance already factored in, so you can see what you’d actually pay each month before committing to a plan.