What is a health insurance subsidy?
Last updated September 3, 2026.
The main subsidy is the premium tax credit: based on your expected household income for the coverage year, calculated as MAGI, it cuts your monthly marketplace premium, applied in advance. A second type, cost-sharing reductions, lowers deductibles and copays for Silver plans in qualifying income ranges. Two rules matter: the credit is reconciled at tax time, so overestimates of need get paid back, making prompt income updates essential; and affordable employer coverage or Medicaid eligibility disqualifies you. HealthCare.gov's estimator shows your number from household size, state, and income.
What to do
- Estimate your year-ahead income carefully; savings are based on it, not last year.
- Update your application when income changes to avoid tax-time paybacks.
- Consider Silver plans for the extra cost-sharing reductions.
- Use the HealthCare.gov estimator before enrolling.
Related questions
- How do I find out what my insurance covers?
- Can I get health insurance outside open enrollment?
- What is COBRA insurance?
- Can I appeal an insurance denial?
