Retire before 65 and you inherit a problem your working years never had: health insurance with no employer attached. For most early retirees the answer is a marketplace plan under the Affordable Care Act, and for households in their late 50s and early 60s, unsubsidized marketplace premiums are startling, routinely the largest single line item in the early-retirement budget.
The premium tax credit exists to offset that cost, and it can be worth more than $20,000 per year to a couple in their early 60s. But the credit runs on your income, and as of January 1, 2026, it runs on the old, unforgiving rules: earn one dollar over 400% of the federal poverty level and the entire credit disappears. Not phases down. Disappears. For an early retiree, that makes the subsidy the single largest hidden marginal tax in the plan, and managing income around it becomes a central piece of the pre-65 years. This guide covers how the credit works now, exactly what income counts, why the clawback got more dangerous this year, and how we think about planning around the cliff.
How the Credit Works in 2026
The premium tax credit is keyed to two things: your household income as a percentage of the federal poverty level, and the cost of the benchmark plan (the second-lowest-cost silver plan) in your area. The law expects you to contribute a sliding percentage of your income toward that benchmark, from 2.10% at the low end to 9.96% as you approach the limit, and the credit covers the difference between your expected contribution and the benchmark premium. Older buyers face much higher premiums, so the same income produces a much larger credit at 62 than at 35.
You can take the credit two ways: in advance, paid directly to the insurer to lower your monthly premium, or claimed when you file. Nearly everyone takes it in advance, which is convenient and, as we will see below, is exactly where the new risk lives.
One quiet change from the 2025 tax law for anyone retiring mid-year: the credit is no longer allowed for coverage picked up through the marketplace’s income-based monthly enrollment window. Enrolling through an event-based special enrollment period, such as losing employer coverage when you retire, still qualifies.
What Changed on January 1, 2026
From 2021 through 2025, temporarily enhanced credits removed the income ceiling entirely; households above 400% of the poverty level simply paid no more than 8.5% of income toward the benchmark plan. Those enhancements expired at the end of 2025, and the original structure returned.
For 2026 coverage, 400% of the federal poverty level sits at roughly $62,600 for a single person, about $84,600 for a couple, and roughly $128,600 for a family of four (2026 eligibility keys off the 2025 poverty guidelines). Below the line, the sliding-scale credit works as it always has. One dollar over the line, and the credit is zero. The change is not theoretical: marketplace premium payments rose sharply across the board in 2026, and for enrollees who kept the same plan, payments were projected to more than double.
The stakes scale with age. A couple in their early 60s buying coverage in many markets faces unsubsidized premiums that can exceed $20,000 per year; at $84,599 of income they may pay a manageable percentage of income, and at $84,601 they pay the whole thing. That is the cliff, and it is why a single unplanned dollar of income can be the most expensive dollar in the entire tax code.
One honest caveat about permanence: Congress has been fighting over this all year. The House passed a three-year extension of the enhanced credits in January; the Senate rejected an earlier version and has been negotiating alternatives since, and nothing has become law as of this writing. We lean toward planning on current law, the hard cliff, and treating any extension that passes as upside rather than something to build a plan around.
Your MAGI Is the Thermostat
The income figure that determines the credit is modified adjusted gross income, and the marketplace’s MAGI definition has its own quirks. It starts with adjusted gross income and adds back tax-exempt interest, the untaxed portion of Social Security benefits (all of it, which surprises early claimants), and excluded foreign income. It is not the same MAGI that drives Medicare surcharges, and it is measured for the household, including dependents required to file.
What this means in practice is that the credit responds to which dollars fund your lifestyle, not how much you spend:
Counts toward MAGI: every dollar withdrawn from a traditional IRA or 401(k), every dollar of Roth conversion, capital gains (long and short), dividends, interest including municipal bond interest, rental income, part-time wages, and the untaxed part of any Social Security you have started.
Does not count: qualified Roth withdrawals, the return of your own basis (Roth contributions, matured ladder conversions, the principal portion of taxable-account sales), HSA distributions for qualified medical expenses, and plain cash from savings.
Two households spending an identical $85,000 can sit on opposite sides of the cliff purely because of account sourcing. One funds the year from a traditional IRA and is over the line; the other funds it from cash, Roth basis, and mostly-basis brokerage sales, shows $40,000 of MAGI, and collects a five-figure credit for the same lifestyle. This is the same account-sourcing logic that drives our approach to the retirement gap years generally, with a sharper edge, because here the marginal dollar does not just fill a bracket, it can detonate the credit.
The Clawback Is Now Uncapped
Here is the change hiding inside the 2025 tax law that most coverage missed. Advance credits are reconciled on your tax return: if your actual income came in higher than the estimate your subsidy was based on, you repay the excess. For years, repayment was capped at modest amounts for households under 400% of the poverty level. Beginning with 2026 tax years, those caps are repealed. The clawback is now uncapped at every income level.
The practical consequence: an income surprise in December (a mutual fund’s capital gain distribution, an unexpected consulting bonus, a Roth conversion sized without checking the subsidy math) does not just cost you next year’s credit. It can require repaying every advance dollar you received all year. A household that collected $1,800 per month in advance credits and then stumbled over the cliff owes roughly $21,600 back at filing. Under the old caps, a modest overage had a modest cost; now the reconciliation has teeth at every income level, which raises the value of conservative income estimates and a real buffer under the line. It also raises the value of updating: if your income picture changes mid-year, reporting it to the marketplace promptly resizes the advance credits going forward, shrinking the amount at stake when the return is filed. The reconciliation itself is not optional: advance credits are squared up on Form 8962 with your return, and failing to file and reconcile can cost you advance credits in future years until you do.
Living Under the Cliff: The Playbook
For the years between early retirement and Medicare, we lean toward treating the cliff as a hard budget line and engineering income beneath it with a deliberate margin, not landing at 395% of the poverty level and hoping. The levers, in rough order:
Fund spending from non-MAGI sources first. Cash runway, Roth contribution basis, matured ladder rungs, and high-basis taxable positions all buy lifestyle without buying MAGI. This is where the bridge assets we describe in the Roth conversion ladder do double duty: the same dollars that solve the age-59½ problem also solve the subsidy problem.
Work the deduction side, not just the income side. MAGI is income minus above-the-line deductions, and early retirees have more of these available than they think. If your marketplace plan is HSA-qualified, deductible HSA contributions lower MAGI directly, and unlike retirement plan contributions they require no earned income at all; we cover why the HSA is worth funding on its own merits in our HSA guide. And for anyone with part-time, consulting, or other self-employment income during the bridge years, deductible retirement plan contributions do the same MAGI work while the earned income lasts. A dollar deducted is worth exactly as much as a dollar of income avoided, and sometimes it is the easier dollar to find.
Recognize the conversion tension honestly. The gap years before Social Security and RMDs are the best conversion window of most people’s lives, and every converted dollar is marketplace MAGI. And even below the cliff, the slide is not free: the credit shrinks as MAGI rises, so each marginal dollar of conversion carries an implicit surtax on top of its stated bracket, and a model that ignores it will oversize the rung. The two strategies compete for the same years, and the resolution is household-specific: for a family whose future RMD problem is enormous, conversions can be worth more than subsidies; for a household with moderate pre-tax balances and expensive local premiums, the subsidy wins the early years and the conversions wait for 65. This is a lifetime, both-paths modeling exercise of exactly the kind we describe in our guide to Roth conversion strategy under OBBBA, with the subsidy priced in as the tax it effectively is.
Watch the quiet MAGI sources. Mutual fund distributions in taxable accounts, municipal bond interest (tax-exempt, but added back for this purpose), and the untaxed portion of Social Security for anyone who claimed early are the three that most often push a carefully planned year over the line.
Leave a real buffer. Because the clawback is uncapped and some income arrives uninvited, we lean toward planning several thousand dollars below the cliff, not at it.
When Crossing on Purpose Beats Tiptoeing
There is a second legitimate strategy, and for some households it wins: deliberately accept one full-cliff year. Concentrate the MAGI-heavy moves, a large Roth conversion, a major gain harvest, a business or property sale, into a single year, absorb one year of unsubsidized premiums with eyes open, then drop back under the line for the years that follow.
The math often favors concentration because the cliff is binary: the subsidy lost in one big year is roughly the same subsidy lost in a barely-over year, while the planning accomplished can be several times larger. What almost never wins is the in-between pattern, dribbling slightly over the cliff two years in a row, paying full premiums twice for planning that could have fit in one year. If the cliff is going to cost you a year of subsidies, we lean toward making that year count.
The Handoff at 65
The marketplace game ends at Medicare. That ending is not a choice: once you are eligible for Medicare, marketplace coverage no longer qualifies for the credit. But the income planning does not end; it changes referees. Medicare premiums are means-tested through IRMAA, and the surcharge is based on your income from two years earlier, which means age 63 is when your income starts setting Medicare premiums, potentially while it is still setting marketplace subsidies. The final stretch before 65 is the one window where a single year’s MAGI can be doing double damage, and it deserves the most careful modeling of the whole bridge period. We cover the IRMAA brackets, the two-year lookback, and the appeal process in our IRMAA guide.
Common Questions
What is the ACA subsidy cliff for 2026?
400% of the federal poverty level: roughly $62,600 for a single person, about $84,600 for a couple, and roughly $128,600 for a family of four for 2026 coverage. One dollar of MAGI over the line eliminates the entire premium tax credit. The gradual phase-out that existed from 2021 through 2025 expired at the end of 2025.
Do Roth withdrawals count against my subsidy?
Qualified Roth withdrawals do not add to MAGI, and neither does withdrawing your own Roth contribution basis or matured conversion principal. Traditional IRA and 401(k) withdrawals and Roth conversions count in full. Which accounts fund your spending is the whole game.
Does municipal bond interest really count?
For the marketplace’s MAGI definition, yes. Tax-exempt interest is added back, along with the untaxed portion of Social Security benefits. Both routinely surprise people who planned only around their taxable income.
What happens if my income ends up over my estimate?
Advance credits are reconciled on Form 8962 with your return, and beginning with 2026 the repayment caps are repealed. Come in over the cliff and you can owe back every advance dollar for the year. Conservative estimates and a buffer under the line are the protection.
Should I skip Roth conversions to keep my subsidy?
Sometimes, and sometimes the reverse. Conversions and subsidies compete for the same low-income years, and the winner depends on the size of your pre-tax balances, your local premium costs, your age, and the years remaining before 65. It is a modeling question we would never answer with a rule of thumb, and the deliberate one-big-year pattern is often the best of both.
Is the cliff permanent?
It is current law, and extension legislation has been actively debated all year without passing. We plan on the cliff and treat any legislative relief as a bonus, revisiting the plan if the law changes.