The Medicaid coverage gap and federal PTC rules
Understand why income below 100% FPL may produce neither Medicaid nor a federal premium tax credit in some states.
In a state that has not expanded Medicaid, some adults can be ineligible for Medicaid while also falling below the usual 100% FPL minimum for PTC. The coverage gap does not itself create a federal tax credit.
Confirm the state's Medicaid decision
Marketplace applications transfer potentially eligible cases to the state. Household composition and income methods can differ between Medicaid and PTC. Preserve the eligibility notice and follow appeal instructions if facts are wrong.
Do not rely on the former immigrant exception
For 2026, enacted law removed the PTC rule that had covered certain lawfully present individuals below poverty solely because immigration status blocked Medicaid. Other narrow below-poverty rules require their own conditions.
Decision example and mistake
An adult below poverty is denied Medicaid under state rules and assumes the denial guarantees Marketplace savings. Federal PTC still has its income floor. The mistake is treating the two programs as perfect opposites.
Document state program and income facts
Use the household's state, final PTC household, applicable FPL table, and Medicaid determination. In a non-expansion state, adults below 100% FPL may fall between Medicaid eligibility and the ordinary PTC range. The reasonable Marketplace estimate rule is fact-specific and should not be presented as a guaranteed year-end exception.
Recheck state eligibility after any household or income change; program categories can change even when annual income remains below 100% FPL.
Filing and enrollment checks
- Keep the Medicaid eligibility or denial notice.
- Document the income estimate used at Marketplace enrollment.
- Reassess options after a move, income change, pregnancy, disability, or household change.
Continue with
Authorities used for this guide
- IRS: Questions and answers on the Premium Tax Credit
Current 2026 eligibility, household income, change reporting, reconciliation, and full repayment - CMS: Working Families Tax Cuts Act section 71302 guidance for plan year 2026
2026 removal of below-poverty PTC based on immigration-related Medicaid ineligibility - CMS / HealthCare.gov: How to estimate expected income and count household members
Annual income forecasting, document requests, self-employment, and household reporting