Proposed IRS Rules Tighten the Health Premium Tax Credit, Starting With 2026 Returns
The Treasury Department and the IRS on Oct. 14, 2026, proposed regulations to carry out the changes that the 2025 budget reconciliation law, Public Law 119-21, made to the premium tax credit, the refundable credit that helps people pay for health insurance bought through the Affordable Care Act exchanges. The proposal, REG-101576-26, was published in the Federal Register on Oct. 15. The administration, which calls the 2025 law the Working Families Tax Cuts (it is widely known as the One Big Beautiful Bill Act), presented the rules as a safeguard against improper claims. The Department of Health and Human Services is expected to issue parallel rules governing the exchanges' side of the process.
Much of what the proposal addresses is already law. The statutory changes phase in over three years, and the proposed regulations supply the mechanics for each stage.
What changes, and when
Tax year 2026 (returns filed in 2027)
Repayment caps are gone. People who receive advance payments of the credit during the year reconcile them on their tax returns. Under prior law, many lower- and moderate-income households owed back only a capped amount if their advance payments proved too large. The 2025 law repealed those caps for tax years beginning after Dec. 31, 2025. Anyone whose actual 2026 income turns out higher than estimated will owe the full excess. Treasury estimates that about 3.7 million returns in 2028 will include an excess-credit repayment.
A low-income immigrant rule ends. Prior law let certain lawfully present noncitizens with income below 100% of the federal poverty line, who are barred from Medicaid because of their immigration status, qualify for the credit. The statute repealed that rule for tax years beginning after 2025, and the proposal deletes the matching regulatory language.
Income-based special enrollment. Coverage bought during a special enrollment period available solely because of household income, rather than a qualifying event or other change in circumstances, does not count as a qualified health plan for credit purposes. The statute applies to plan years beginning after 2025; the regulatory text would apply prospectively.
Tax year 2027
Narrower immigrant eligibility. The credit will be limited to U.S. citizens, U.S. nationals and "eligible aliens": lawful permanent residents, Cuban and Haitian entrants, and people lawfully residing in the U.S. under a Compact of Free Association. When a household includes a lawfully present member who is not an eligible alien, the premiums attributable to that person would be excluded from the credit calculation, and exchanges would reflect the exclusion on Form 1095-A.
Medicaid work requirements. People who would qualify for Medicaid but are denied for failing its new community-engagement requirements would be treated as eligible for Medicaid coverage, which makes them ineligible for the credit for those months.
Tax year 2028
Verification first. A month generally will count toward the credit only if the exchange has verified the enrollee's residence and citizenship, national status or lawful presence. For people receiving advance payments, exchanges must also verify household income, family size, eligibility for other coverage and, where relevant, eligible-alien status. A plan without a pre-enrollment verification process would not be a qualified health plan for credit purposes.
Reconciliation checks. A month also would not count if the exchange has not met requirements tied to the enrollee's reconciliation of prior-year advance payments.
A carve-out for new families. Verification may be waived for certain special enrollment periods tied to changes in family size. Treasury estimates about 50,000 families with newborns would benefit.
Who is affected
Self-employed people and small-business owners who buy exchange coverage and whose income is hard to predict. They are among the most exposed to a full repayment.
Lawfully present noncitizens outside the eligible-alien categories, and households with members of mixed immigration status.
Low-income adults in states implementing Medicaid work requirements.
Tax preparers, who will see uncapped repayments on 2026 returns and new Form 1095-A reporting for 2027.
What to do now
Recheck 2026 income. Enrollees whose income has risen this year can report the change to their exchange; reducing advance payments for the remaining months may shrink the balance due at filing.
Budget for a balance due. Self-employed taxpayers should factor a possible repayment into their fourth-quarter estimated payment, due Jan. 15, 2027, or into cash reserves for the April filing deadline.
Keep records. Retain income records, immigration documents where relevant, and every Form 1095-A. Exchange verification will tighten further in 2028.
Comment if affected. Comments are due Nov. 30, 2026. A telephone hearing is scheduled for Dec. 8, with requests to attend due by Dec. 4.
Watch for HHS rules. The companion exchange rules will determine how verification works in practice.
The rules are proposed and may change before they are finalized. The statutory changes, including the repeal of the repayment caps, apply regardless.
Sources
This article is general information, not tax, legal, or accounting advice. Consult a qualified professional about your situation.
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