If your actual income comes in higher than the estimate you gave the health insurance Marketplace, you will have to pay back some — or all — of the premium subsidy you received, when you reconcile on Form 8962 at tax time. How much depends on where you land relative to the federal poverty level: below 400% of FPL, repayment is capped on a sliding scale; at or above 400%, there is no cap, and for 2026 coverage every dollar of advance credit must be repaid.
That last part is the big change. The "subsidy cliff" at 400% FPL, suspended during 2021–2025 by enhanced subsidies, is back for the 2026 plan year. Here is how the math works and what you can still do mid-year.
How does reconciliation actually work?
The premium tax credit is technically an estimate paid in advance:
- You projected your income when you enrolled; the Marketplace paid an advance premium tax credit (APTC) to your insurer each month.
- At tax time, Form 8962 recalculates the credit you were truly entitled to based on actual income.
- Too much advance credit → the excess goes on your tax return as an amount you owe. Too little → you get the difference back as a refund.
This isn’t a penalty — it’s a true-up. But when income jumps (a new job, a good freelance year, a spouse returning to work, a retirement account withdrawal), the true-up can run to thousands of dollars.
What’s the difference between under and over 400% FPL?
- Under 400% of FPL: repayment is limited by IRS caps that scale with income and filing status — a few hundred dollars at the lowest tiers up to a few thousand at the top. The exact cap table is set each year in the Form 8962 instructions.
- At or above 400% of FPL: no cap. You repay all APTC received. Going even $1 over the line triggers full repayment — that’s why it’s called a cliff.
During 2021–2025, enhanced subsidies eliminated the cliff — households above 400% could still get credits and repayment stayed bounded. Congress let those enhancements expire at the end of 2025, which is also why many enrollees saw premiums spike this year, as we covered in why ACA premium tax credits got smaller. For 2026 coverage reconciled on the return you file in 2027, the cliff is fully back.
What can you do before year-end?
If you already know your income is running above your estimate:
- Update your Marketplace income now. Reporting the change mid-year adjusts your remaining months of APTC, shrinking the eventual repayment instead of letting it compound.
- Watch the 400% line if you’re near it. Late-year income you control — an extra Roth conversion, realizing capital gains, a December invoice — can push you over the cliff. Deductible traditional IRA or HSA contributions work the other direction, lowering MAGI.
- Set aside tax money if repayment is coming. A repayment lands on your return like any balance due; if you’re self-employed it stacks with your quarterly obligations — see who must pay Q3 estimated taxes.
FAQ
Q. What income counts — gross pay? Taxable income?
A. Modified adjusted gross income (MAGI): AGI plus tax-exempt interest, untaxed Social Security, and excluded foreign income. Not gross wages, and not just taxable income.
Q. I’m under 400% FPL. What’s the ballpark cap?
A. The caps run on a sliding scale by income tier and filing status — from a few hundred dollars for the lowest incomes to roughly $1,700/$3,500 (single/family) territory at the upper tiers in recent years. Check the current Form 8962 instructions for the year you’re filing; the amounts adjust annually.
Q. Can the IRS waive the repayment like it did in 2020?
A. The 2020 waiver was one-time pandemic relief. No such suspension exists for 2025 or 2026 reconciliation as of July 2026.
Q. What if I can’t afford the repayment?
A. It’s part of your tax balance, so normal options apply — installment agreements and, in hardship cases, currently-not-collectible status. Repayment doesn’t cancel your insurance.