Most people who buy a marketplace plan pay less than the sticker price because of a premium tax credit. The credit is real money, applied monthly, and it depends on three things.
What decides the amount
- Household income for the coverage year, measured as modified adjusted gross income, compared with the federal poverty level for your household size.
- Household size, meaning everyone on your tax return, not just the people enrolling.
- The cost of the benchmark plan in your county: the second-lowest-cost Silver plan. The credit is the difference between that plan's premium and the share of income the law says you should pay.
How it works in practice
You estimate next year's income on the application. The marketplace calculates a monthly credit and sends it straight to the carrier, so your bill is the net amount. You can apply the credit to any metal tier, which is why a Bronze plan can end up at $0 a month for some households.
Cost-sharing reductions
Households below roughly two and a half times the poverty level who choose a Silver plan also get lower deductibles and copays automatically. This is the most overlooked benefit in the marketplace, and it is Silver-only.
The reporting mistake
The credit is reconciled on your tax return. Earn more than you estimated and you may repay some of it. Earn less and you get more back. Report income changes to the marketplace during the year, especially a raise, a new job, or a spouse returning to work.
Who does not qualify
- Anyone offered affordable employer coverage that meets minimum value, even if they turned it down.
- Anyone eligible for Medicare, Medicaid, or CHIP.
- Married couples filing separately, with narrow exceptions.
The rules move
Income thresholds, the percentage of income you are expected to pay, and the poverty level figures change year to year, and Congress has changed the credit formula more than once. Any estimate is only as good as the year it was made for.
This guide is general information, not advice about a specific policy. Benefits, enrollment rules, and costs vary by state, carrier, and year. Confirm details for your situation with a licensed agent.
