ACA Premium Tax Credit Calculator
Estimate your Affordable Care Act health insurance subsidy for 2025. See your Premium Tax Credit, Cost Sharing Reduction eligibility, and what you'll actually pay for Marketplace coverage.
Modified Adjusted Gross Income for all tax household members.
Find your SLCSP premium on Healthcare.gov or Form 1095-A.
Enter your chosen plan's full premium to see your net cost after subsidy. Leave at 0 to use the SLCSP as benchmark.
Monthly Premium Tax Credit
$442$5,308 per year
Your Expected Contribution
$157.703.78% of income ($1,892/yr)
Net Monthly Premium
$158After subsidy applied to SLCSP benchmark
| Federal Poverty Level (2025) | $20,440 for 2 people |
| Your Income as % of FPL | 244.6% |
| Applicable Percentage | 3.78% |
| Expected Annual Contribution | $1,892 |
| Annual SLCSP Premium | $7,200 |
| Annual Premium Tax Credit | $5,308 |
PTC = Annual SLCSP Premium − Expected Contribution (cannot be negative)
Slightly reduced cost sharing. Must enroll in a Silver plan to receive CSR.
Your Silver plan covers approximately 73% of average healthcare costs (vs. 70% for standard Silver).
| Income Range | CSR Tier | Plan Covers |
|---|---|---|
| 100% – 150% FPL | Silver 94 | 94% |
| 150% – 200% FPL | Silver 87 | 87% |
| 200% – 250% FPL | Silver 73 | 73% |
| Above 250% FPL | None | 70% |
The Premium Tax Credit (PTC) is a refundable tax credit that helps eligible individuals and families afford health insurance purchased through the Health Insurance Marketplace (Healthcare.gov). It was established by the Affordable Care Act and enhanced by the American Rescue Plan Act and Inflation Reduction Act.
Eligibility (2025):
- Household income above 100% FPL (or 138% FPL in Medicaid expansion states)
- No upper income limit under enhanced rules — subsidy phases out gradually
- Not eligible for other coverage (employer, Medicare, Medicaid, CHIP)
- Must file joint return if married (MFS generally ineligible)
How it's calculated:
- Your income is compared to the Federal Poverty Level for your household size
- An "applicable percentage" determines your expected premium contribution
- PTC = Second Lowest Cost Silver Plan premium − your expected contribution
- You can apply the credit in advance (APTC) to lower monthly premiums, or claim it when filing
Enhanced subsidies (IRA, through 2025):
- Below 150% FPL: $0 premium for the benchmark Silver plan
- 150-400% FPL: Graduated contribution from 0% to 8.5% of income
- Above 400% FPL: Capped at 8.5% of income (no subsidy cliff)
The SLCSP (Second Lowest Cost Silver Plan) is the benchmark plan used to calculate your credit. You can enroll in any metal tier (Bronze, Silver, Gold, Platinum) and apply your credit. Enrolling in a Silver plan at lower incomes also unlocks Cost Sharing Reductions.
No Income Cliff (2025)
Under enhanced IRA rules, there's no subsidy cutoff at 400% FPL. People at any income level pay no more than 8.5% of income for the benchmark Silver plan.
$0 Premiums Possible
Households below 150% FPL pay $0 for the benchmark Silver plan. Many Bronze plans are also free after the credit is applied.
Silver Plan = Extra Savings
Enrolling in a Silver plan at incomes below 250% FPL unlocks Cost Sharing Reductions — lower deductibles, copays, and out-of-pocket maximums.
Refundable Credit
The PTC is fully refundable — you receive the credit even if you owe no federal income tax. It can be taken in advance or claimed when filing.
Frequently asked questions
What is the ACA Premium Tax Credit?
The Premium Tax Credit (PTC) is a refundable tax credit that helps eligible individuals and families afford health insurance purchased through the Health Insurance Marketplace (Healthcare.gov). The credit is based on your household income relative to the Federal Poverty Level and can be applied in advance to lower your monthly premiums or claimed when you file your tax return.
Who is eligible for ACA subsidies in 2025?
For 2025, most people who purchase insurance through the Marketplace and have household income above the Federal Poverty Level are eligible. Under the enhanced subsidies from the Inflation Reduction Act, there is no upper income cliff — people above 400% FPL can still receive credits, capped at paying 8.5% of income for the benchmark Silver plan. You must not be eligible for other qualifying coverage such as employer insurance, Medicare, or Medicaid.
What is the Second Lowest Cost Silver Plan (SLCSP)?
The SLCSP is the benchmark plan used to calculate your Premium Tax Credit. It's the second-cheapest Silver-tier health plan available in your area for your household. Your credit is calculated as the difference between the SLCSP premium and your expected contribution (a percentage of your income). You can find your SLCSP on Healthcare.gov or on Form 1095-A if you already have Marketplace coverage.
What are Cost Sharing Reductions (CSR)?
Cost Sharing Reductions lower your deductibles, copays, and out-of-pocket maximums when you enroll in a Silver plan through the Marketplace. They are available to households with income between 100% and 250% of the Federal Poverty Level. At 100-150% FPL, you get a Silver 94 plan (covers 94% of costs vs. standard 70%). CSR is only available with Silver plans — if you choose Bronze or Gold, you still get the PTC but not the reduced cost sharing.
Will ACA subsidies change in 2026?
The enhanced ACA subsidies from the Inflation Reduction Act are currently set to expire after the 2025 plan year. If Congress does not extend them, 2026 subsidies would revert to pre-2021 levels: a hard subsidy cliff at 400% FPL, higher applicable percentages at all income levels, and no subsidies for those above 400% FPL. Check Healthcare.gov for the latest information on subsidy availability for your plan year.
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Related insights
Use these guides for rule explanations, planning context, and follow-up questions beyond the calculator result.