Colorado residents fill out playing cards and share their tales for content material to ship to congressional representatives relating to health-care cuts on Nov. 1, 2025, the primary day of ACA open enrollment, in Northglenn, Colorado.
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For the primary time in years, many People enrolled in a medical insurance plan by way of the Reasonably priced Care Act market might want to preserve a cautious accounting of their annual revenue — or danger a hefty federal tax invoice.
Enhanced ACA subsidies lapsed on the finish of 2025, leaving tens of millions of households on the hook for increased insurance coverage premiums. The lapse additionally reintroduced the so-called subsidy cliff, whereby households that earn even $1 greater than a selected revenue threshold will lose all eligibility for subsidies, also referred to as premium tax credit.
That revenue cutoff, which varies by household dimension, is $62,600 for a single particular person, $84,600 for a two-person family and $128,600 for a household of 4 in 2026, for instance.
Greater than 2 million folks enrolled in an ACA market plan have an revenue close to the subsidy cliff. ACA enrollees additionally are inclined to have comparatively unstable incomes, making it exhausting to foretell their annual earnings, consultants mentioned.
Households over the restrict must pay again any federal subsidies they acquired for premiums — probably price hundreds of {dollars} — once they file taxes subsequent yr for 2026.
“Beginning February, March, April 2027 is if you’ll begin to see the horror tales of individuals with astronomical tax payments, from the payback of those credit,” mentioned Tommy Lucas, a licensed monetary planner and enrolled agent at Moisand Fitzgerald Tamayo, which was No. 69 on CNBC’s Monetary Advisor 100 listing for 2025.
The potential monetary impression is exacerbated by a multitrillion-dollar legislative bundle often known as the “large stunning invoice” that Republicans handed over the summer season, which stripped away guardrails capping the quantity of extra subsidies households should repay, consultants mentioned.
“I do not know of anything that is as penalizing within the tax code by including one further greenback [of income],” Lucas mentioned. “You have to be in your recreation beginning now.”
The whole sum households have to pay again to the federal authorities “might simply be $10,000,” mentioned Cynthia Cox, vp and director of the Reasonably priced Care Act program at KFF, a nonpartisan well being coverage analysis group.
The sum is determined by elements like age, geography and household dimension, Cox mentioned.
An older couple who inadvertently earn an excessive amount of cash and go over the subsidy cliff might have to pay again round $20,000, for instance, she mentioned.
Congress might nonetheless prolong ACA subsidies
There’s an opportunity Congress should still act to increase enhanced ACA subsidies in some type and stop a shock tax invoice for a lot of households subsequent yr.
Democrats on Capitol Hill have mentioned they wish to prolong them, whereas most Republicans have mentioned they’re opposed. Nonetheless, a bunch of Republicans has not too long ago engaged in bipartisan talks within the Home and Senate which will yield legislative motion.
“I feel the possibilities are fairly slim one thing will go,” Cox mentioned. “From a private finance perspective, it’s important to simply depend on nothing taking place in Congress.”
Hundreds of thousands of persons are close to ACA subsidy cliff
The subsidy cliff is in impact for the primary time since Congress enacted enhanced premium subsidies in 2021 as a part of a Covid-19 pandemic reduction regulation.
Now, households with an revenue in 2026 that exceeds 400% of the federal poverty line are ineligible for any premium tax credit. They’d be on the hook for the total, unsubsidized medical insurance premium.
For instance, the common 60-year-old with an revenue of $62,000 would pay about $515 a month in well being premiums, or roughly 10% of their annual revenue, in keeping with a KFF evaluation. This particular person can be eligible for premium subsidies.
Nonetheless, the identical particular person incomes $64,000 would pay $1,244 monthly, about 23% of their revenue, since they might fall over the subsidy cliff, KFF discovered.
Hundreds of thousands of individuals have an revenue close to the subsidy cliff.
In 2025, about 3% of ACA enrollees — practically 725,000 folks — earned between 400% and 500% of the federal poverty line, for instance, in keeping with a Bipartisan Coverage Heart evaluation of federal knowledge.
One other 7% — about 1.8 million folks — earned 300% to 400% of the poverty line, it discovered. That equates to greater than about $47,000 to per yr for a person and about $96,000 for a household of 4.
“Individuals round that revenue [threshold] did not have to fret about that for the previous 5 years,” Cox mentioned.
“[Now], in case your revenue is correct round that threshold for subsidy eligibility, then it’s essential to be actually cautious about how a lot cash you are making.”
How ACA premium tax credit score works
About 22 million People acquired premium subsidies, also referred to as premium tax credit, in 2025.
Households can decide to obtain the tax credit score in one in all two methods: As a lump sum throughout tax season or as a sophisticated cost.
Underneath the latter choice, by far the most well-liked, the federal authorities points the tax credit score on to a shopper’s insurer, which then lowers the buyer’s out-of-pocket premium.
Customers obtain these superior ACA subsidies based mostly on an estimated annual revenue they supply when signing up for insurance coverage. They need to reconcile these subsidies throughout tax season and repay any extra tax credit to the IRS.

ACA enrollees are inclined to have comparatively unstable incomes, making it tough to foretell their annual pay precisely, Cox mentioned.
About one in 5 folks, 21%, between 19 and 64 years previous who store for insurance coverage on the ACA market are in households with “excessive ranges of revenue volatility,” in keeping with a KFF research printed in Might. The researchers outline volatility as a distinction of not less than 20% between estimated and precise revenue.
Why you need to know your ACA ‘cliff quantity’
The federal authorities determines eligibility for ACA subsidies based mostly on “modified adjusted gross revenue.”
Figuring out MAGI could also be difficult, consultants mentioned.
It is one’s adjusted gross revenue — a line merchandise on households’ tax returns — with another parts added again. The 2 “biggies” for most individuals are any tax-exempt curiosity, similar to from municipal bonds, and any untaxed Social Safety advantages, Lucas mentioned.
“It is undoubtedly necessary for folks on the ACA to know their cliff quantity, their 400%,” Lucas mentioned.
They need to monitor their revenue month-to-month to see the way it’s trending, he mentioned.
“There are methods to control your revenue and even make modifications mid-year to remain eligible for the subsidies, so you do not have a giant shock come tax time subsequent yr,” Cox mentioned.
For instance, households can contemplate making pre-tax contributions to monetary accounts like a 401(okay), particular person retirement account or well being financial savings account, which helps to scale back modified adjusted gross revenue, consultants mentioned.
Moreover, retirees and different households might select to attract cash from Roth retirement accounts, which, with some exceptions, does not depend towards taxable revenue. Savers can withdraw Roth contributions tax-free, even when they are not but age 59½.
Customers who’re nonetheless working and have some flexibility of their hours and work schedule may also decide to work much less to scale back their annual earnings.