ACA Health Insurance Subsidy Calculator (2026)

Why 2026 Is Different

The temporary enhanced ACA subsidies that ran from 2021 through 2025 removed the income cap entirely — anyone could qualify for some help regardless of income, as long as the benchmark plan cost more than 8.5% of their income. Congress did not extend those enhancements, so for 2026 coverage, the original 400% of Federal Poverty Level cliff is back: cross that line and your premium tax credit drops to exactly $0, no matter how expensive your plan is. This calculator uses the 2026 rules, not the expired 2021-2025 ones.

How the Subsidy Formula Works

Subsidy = Benchmark Silver Plan Premium − (Income × Required Contribution %)

Your "required contribution %" comes from a federal sliding scale based on how your income compares to the Federal Poverty Level (FPL) for your household size — the lower your income relative to the FPL, the smaller the percentage you're expected to contribute, and the larger your credit.

2026 Federal Poverty Level (48 Contiguous States)

Household size	100% FPL	400% FPL (cliff)
1	$15,650	$62,600
2	$21,150	$84,600
3	$26,650	$106,600
4	$32,150	$128,600

Alaska and Hawaii use higher FPL amounts. Add $5,500 per additional household member for sizes beyond 4.

Required Contribution by Income Bracket

Income (% of FPL)	Required contribution
Under 133%	2.10% of income
133% – under 150%	4.19% of income
150% – under 200%	6.60% of income
200% – under 250%	8.44% of income
250% – 400%	9.96% of income
Above 400%	No subsidy — full premium

These bracket percentages are simplified for clarity; the actual federal table graduates smoothly within a couple of these ranges. Treat this as a close estimate, and confirm your exact figure at healthcare.gov.

This calculator is most useful for

Estimating your subsidy before Open Enrollment so you know what to expect
Checking whether a raise, bonus, or freelance income might push you over the 400% cliff
Comparing how much a Bronze vs. Gold plan would actually cost after your fixed credit

Worth knowing: Because the subsidy is calculated from your estimated income at enrollment, a year-end income surprise can mean owing money back at tax time. If your income changes significantly during the year, updating your Marketplace application right away avoids a larger reconciliation bill later.

Frequently Asked Questions

How is my ACA premium tax credit calculated?

Your subsidy equals your benchmark plan's premium (the second-lowest-cost Silver plan in your area) minus your expected contribution, which is a percentage of your income set by a federal sliding scale based on how your income compares to the Federal Poverty Level (FPL).

Is there an income limit for ACA subsidies in 2026?

Yes. The temporary enhanced subsidies that removed the income cap expired, so the original 400% of Federal Poverty Level cliff is back for 2026 — households above that line receive no premium tax credit at all, regardless of how high their premium is.

What counts as household income for ACA subsidies?

Marketplace subsidies use Modified Adjusted Gross Income (MAGI) for everyone in your tax household who's required to file a return, not just take-home pay — it generally matches your Adjusted Gross Income plus any tax-exempt interest and excluded foreign income.

What is the benchmark Silver plan?

It's the second-lowest-cost Silver plan available in your area through the Marketplace. Your subsidy amount is fixed to this plan's price, but you can apply it toward any metal-tier plan — a cheaper Bronze plan might cost very little after the credit, while a pricier Gold plan costs the difference.

Do I have to pay back my subsidy at tax time?

If your actual income for the year ends up higher than what you estimated when you enrolled, you may need to repay some or all of the excess credit when you file taxes — which is why it's worth re-estimating mid-year if your income changes meaningfully.

Is this calculator an official subsidy determination?

No. This estimates your credit using the same federal formula the Marketplace uses, but your actual subsidy is determined when you apply at healthcare.gov or your state exchange, using verified income and the real benchmark plan price for your exact ZIP code.

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