Home › Health Insurance Subsidy Calculator

Free Health Insurance Subsidy Calculator

Estimate your Affordable Care Act (ACA) premium tax credit and health insurance subsidy based on your income, household size, and plan cost. Use this tool to understand how much financial help you may qualify for when shopping for 2025 marketplace plans.

ACA Subsidy Estimator

$
$
$0.00
Estimated Monthly Subsidy
FPL Percentage0%
Expected Monthly Contribution$0
Net Monthly Premium$0
Annual Savings from Subsidy$0
Recommended Metal Tier--

How to Use the ACA Subsidy Calculator

Enter your annual household income, household size, state, and the age of the oldest household member. Choose your plan type and enter the monthly plan premium. Click Calculate to see your estimated subsidy, net monthly premium, and annual savings.

The calculator also shows your FPL percentage and a metal tier recommendation based on your income level. Generally, Silver plans offer the best value for subsidy-eligible households.

ACA Subsidy Formula

Expected Contribution = Household Income × Cap Percentage / 12
Monthly Subsidy = Plan Premium − Expected Contribution
Net Premium = Plan Premium − Monthly Subsidy

The cap percentage is based on your FPL ratio using the 2025 ACA sliding scale: 100-150% FPL (0%), 150-200% FPL (0-2%), 200-250% FPL (2-4%), 250-300% FPL (4-6%), 300-400% FPL (6-8.5%), Above 400% FPL (no subsidy).

Frequently Asked Questions

For 2025, the FPL for a single-person household in the 48 contiguous states is $15,650. It increases by $5,550 for each additional household member. Alaska and Hawaii have higher FPL thresholds.
The ACA limits what you pay for a benchmark health plan to a percentage of your income. The government pays the difference between your plan's premium and your expected contribution as a tax credit.
If you qualify for subsidies, Silver plans often provide the best overall value because they also offer cost-sharing reductions. Bronze plans have lower premiums but higher out-of-pocket costs.
The premium tax credit is reconciled when you file your taxes. Report income changes to the marketplace during the year to adjust your subsidy and avoid a large tax bill at year-end.