Most tax benefits phase out gradually. The ACA premium tax credit does not. Cross one specific income line and the entire credit vanishes at once. That sudden drop is the subsidy cliff, and after four years without it, the cliff is back.
Under the Affordable Care Act as originally written, the premium tax credit was available only to households with income between 100% and 400% of the federal poverty level. At 400% you could receive a credit worth thousands of dollars a year. At 400% plus one dollar, you received nothing. Because a tiny raise or a small freelance check could erase the whole subsidy, people called it a cliff rather than a phase-out, and financial planners built entire year-end strategies around staying on the right side of the line.
In 2021 the American Rescue Plan temporarily removed the cliff. Households above 400% of the poverty level became eligible for a credit whenever the benchmark plan cost more than 8.5% of their income, and the percentages everyone paid were lowered across the board. The Inflation Reduction Act extended those enhanced subsidies through the end of 2025. Then they expired on December 31, 2025, and Public Law 119-21, the budget law enacted in 2025, ended the enhanced structure. Starting with plan year 2026, the ACA reverted to the pre-2021 rules: a hard cutoff at 400% of the poverty level and the original, higher schedule of expected contributions.
As of October 2026, no extension has become law. The House passed a three-year extension of the enhanced credits in January 2026, but the bill stalled in the Senate, where lawmakers from both parties expected it to fail. A bipartisan Senate group floated a shorter two-year alternative. None of it reached the president's desk. That means the 400% cliff governs plan year 2026 and, unless Congress acts, plan year 2027 as well.
The Congressional Research Service confirmed the reversion in its 2026 premium tax credit parameters: eligibility from 100% to 400% of the poverty level, expected contributions from 2.10% to 9.96% of income under the IRS 2026 table, and no credit above 400%. The first year under the reverted rules showed the scale of the change. About 23.1 million people selected Marketplace plans during the 2026 open enrollment, down roughly 1.2 million from 2025, the share receiving advance credits fell from 92% to 87%, and the average monthly premium after credits rose 58%, from $113 to $178.
One state moved on its own. New Mexico became the only state to fully backfill the expired federal credits with state money for 2026, drawing on its Health Care Affordability Fund, and it was the only state where Marketplace enrollment grew between 2025 and 2026.
For plan year 2027, eligibility uses the 2026 poverty guidelines, so the 400% cutoff in the 48 contiguous states and DC is:
Alaska's cutoffs run higher, from $79,800 for one person to $278,600 for eight. Hawaii's run from $73,440 for one person to $256,280 for eight. These are gross income lines in MAGI terms, the same modified adjusted gross income the Marketplace counts.
Two details soften the edge slightly. First, the IRS truncates rather than rounds when it converts your income to a percentage of the poverty level, so 400.9% is treated as 400% and stays eligible. Second, at exactly 400% you still qualify; the cutoff bites above 400%, not at it.
The cliff is only half the story. The expected-contribution schedule is also less generous than during the enhanced years. For 2026 the IRS table runs from 2.10% of income under 133% of the poverty level to 9.96% from 300% to 400%. The IRS has published the 2027 table in Revenue Procedure 2026-26 as well, with the scale running from 2.15% under 133% to 10.22% from 300% to 400%. Someone at 390% of the poverty level is now expected to contribute nearly 10% of income toward the benchmark premium, compared with the 8.5% flat cap that applied during the enhanced years.
If your income lands near the cutoff, small MAGI decisions can move you across it. Contributions to a health savings account, pre-tax retirement contributions, and the self-employed health insurance deduction all reduce the income the Marketplace counts, and each can be the difference between a large credit and none. The other direction matters too: a bonus, freelance income, or capital gain that arrives late in the year can push you over the line after you already received advance credits, and starting with tax year 2026 there is no cap on repaying excess advance credit. Estimate carefully, update your Marketplace application when income changes, and treat the cliff as a hard boundary, because that is exactly what the law makes it.
The subsidy cliff is the 400% of federal poverty level income boundary. Under current law, a household even slightly above 400% FPL receives no premium tax credit at all, while a household just below it can receive a substantial credit.
Yes. The enhanced premium tax credits created in 2021 and extended through 2025 expired on December 31, 2025. Public Law 119-21 ended them, and Congress had not restored them as of October 2026.
Using the 2026 poverty guidelines, the 2027 cutoff is $63,840 for a one-person household and $132,000 for a family of four in the 48 contiguous states. Alaska and Hawaii have higher cutoffs.
Not under current federal law. New Mexico is the only state that fully backfilled the expired enhanced credits with state funds for 2026, so its residents have state-level help above the federal cutoff.