Form 8962 is a two-page reconciliation. All year, the government paid part of your health insurance premium directly to your insurer based on the income you guessed at when you enrolled. This form settles up against what you actually earned.
Guess low on income and the settlement is a refund. Guess low on income and then earn more than you expected, and the settlement is a bill. The size of that bill used to be capped for most households. As of tax years beginning after December 31, 2025, it is not.
Everything below was verified against IRS pages on September 6, 2026. The dollar figures in the repayment table are from the 2025 Form 8962 instructions, which is the current published version and governs the returns most people are filing now.
What Form 8962 Actually Does
The IRS states the purpose in one sentence: use Form 8962 to figure the amount of your premium tax credit and reconcile it with the advance payments.
Two numbers are being compared. The premium tax credit is what you were entitled to based on your final household income, family size and the benchmark plan where you live. The advance premium tax credit is what was already paid to your insurer month by month. The difference goes one way or the other.
You must file the form if advance payments were made for anyone in your tax family, or if no advance payments were made but you want to claim the credit. The IRS is explicit that you must file to reconcile even if you are usually not required to file a return at all.
The Line Flow, Without the Fog
Part I builds your contribution percentage. Line 1 is your tax family size. Lines 2a and 2b are modified adjusted gross income, which is your AGI plus tax-exempt interest, excluded foreign earned income and the nontaxable portion of Social Security. Line 3 combines them into household income. Line 4 is the federal poverty line for your state and family size (for 2025, the form uses the 2024 poverty guidelines).
Line 5 is the number the whole page turns on: household income as a percentage of the federal poverty line. Line 7 converts that into an applicable figure from Table 2 in the instructions, line 8a multiplies it by household income to get your annual contribution amount, and line 8b divides by 12.
Part II does the month-by-month math. Column (a) is the enrollment premium from column A of your Form 1095-A. Column (b) is the second lowest cost silver plan premium from column B. Column (c) is your monthly contribution amount. Column (d) is (b) minus (c). Column (e), your allowed credit for the month, is the lesser of (a) and (d). Column (f) is the advance payment from column C of the 1095-A.
Line 24 totals the credit you were allowed. Line 25 totals what was advanced. If 24 is bigger, line 26 is your net premium tax credit and it carries to Schedule 3 (Form 1040), line 9. If 25 is bigger, you skip to Part III.
Part III is the repayment. Line 27 is the excess. Line 28 is the repayment limitation, if one applies. Line 29 is the smaller of the two, and it carries to Schedule 2 (Form 1040), line 1a as additional tax.
Parts IV and V handle two special cases: allocating a policy between two tax families after a divorce or a shared plan, and the alternative calculation for the year of marriage.
The Repayment Limitation Table (Tax Year 2025)
This is Table 5 of the 2025 Form 8962 instructions, read directly off the IRS instructions on September 6, 2026. The percentage in the left column is line 5 of the form.
| Household income as % of federal poverty line | Single filers | All other filing statuses |
|---|---|---|
| Less than 200% | $375 | $750 |
| At least 200% but less than 300% | $975 | $1,950 |
| At least 300% but less than 400% | $1,625 | $3,250 |
| 400% or more | No limit | No limit |
Read the last row carefully, because it is the most expensive line in the ACA. The instructions do not put a dollar figure there. They say that if line 5 is 400 or more there is no repayment limitation, you leave line 28 blank, and you carry the full amount from line 27 to line 29.
That means a household that lands at 401% of the poverty line repays every dollar of excess advance credit, while a household at 399% with the same excess might repay $1,625. If you are filing separately from a spouse you were married to at year end, the limitations apply to each of you separately based on the household income on each return.
The Rule That Changed: No Cap At All After 2025
For tax years beginning after December 31, 2025, the table above no longer exists.
The IRS says so directly in its premium tax credit questions and answers, in an answer updated December 23, 2025: there is no repayment cap for tax years after 2025, and for those years you must repay the full amount by which your advance credit payments exceed your premium tax credit.
The statutory reason is in Revenue Procedure 2025-32, section 2.04, which records that section 71305 of the One Big Beautiful Bill Act (Public Law 119-21) removed Internal Revenue Code section 36B(f)(2)(B), the provision that limited the tax increase from excess advance payments for certain households, effective for taxable years beginning after December 31, 2025. The IRS accordingly stopped publishing an inflation adjustment for it.
The practical translation: on a 2026 return, a household at 180% of poverty that underestimated its income no longer stops at $375 or $750. It repays the entire excess, the same as a household at 450% of poverty.
The 400% Cliff Is Back Too
The two changes compound. The enhanced premium tax credits created in 2021 and extended by the Inflation Reduction Act expired December 31, 2025, which restored the pre-2021 rule that household income above 400% of the federal poverty line qualifies for no credit at all.
The IRS revenue procedures show it plainly. Revenue Procedure 2025-25 publishes an applicable percentage table for 2026 that runs from 2.10% at under 133% of poverty up to 9.96%, and its last row is “At least 300% but not more than 400%.” Revenue Procedure 2026-26 does the same for 2027, running from 2.15% up to 10.22%, and again stopping at 400%. There is no row above 400% because there is no credit above 400%.
KFF, reporting on 2026 sign-up data in May 2026, found that consumers between 400% and 500% of poverty made up just 3% of 2025 plan selections but 27% of the drop in Marketplace coverage going into 2026, and that consumers known to be above the cliff accounted for nearly half of the decline. More detail on that shift is in what the ACA subsidy expiration changed, and the current thresholds are in ACA subsidy income limits.
Put the two rules together and the stakes on line 5 of Form 8962 are higher than they have been since 2020. Crossing 400% of the poverty line on a 2026 return means losing the credit entirely and repaying every advance dollar, with no cap to soften it.
When the Reconciliation Goes Your Way
None of this is one-directional. If your income came in lower than you told the Marketplace, or your family got larger, your allowed credit exceeds what was advanced and the difference is money back.
Line 26 is where that shows up, and it flows to Schedule 3 (Form 1040), line 9. The IRS classifies the premium tax credit as refundable, meaning that if the credit is larger than your tax liability you get the difference as a refund, and you can collect the full amount even if you owe no tax.
This is one reason some people deliberately decline advance payments and take the whole credit at filing time. The Taxpayer Advocate Service notes that this is worth considering if you can carry the full monthly premium and your income swings widely or you expect a lump sum during the year. It removes the repayment risk entirely, which now matters a great deal more than it did through 2025.
Marriage, Letter 12C, and the Mid-Year Fix
Married during the year. The instructions describe an optional alternative calculation for year of marriage that may let you repay less excess advance credit than the general rules produce. Work through Table 4 in the instructions to see whether you qualify, then complete Part V. If you elect it and your allowed credit exceeds the advance payments, you enter zero on line 26 instead of claiming the net credit, so it is a trade.
If you did not file the form. The IRS lists the situations that trigger Letter 12C, and the first is that it appears you were required to reconcile but did not include Form 8962. Others include an incomplete Form 8962, entries inconsistent with the rest of your return, and a premium entered as an annual figure when it should be monthly. The Taxpayer Advocate Service warns that a 12C asking you to reconcile also carries a warning that you may lose the ability to keep receiving advance payments, and says to act immediately. The IRS itself says filing without reconciling will delay your refund and may affect eligibility for future advance credit payments.
The fix that beats all of this. Report changes to the Marketplace as they happen, not in April. The IRS lists what to report: household income changes, moving, gaining or losing other coverage, employment changes, birth or adoption, marriage or divorce, and other changes to your tax family. Report a raise in July and the Marketplace lowers your advance payment for the rest of the year, which shrinks the excess before December. The Taxpayer Advocate Service flags lump sums such as Social Security disability back pay as the most commonly missed item, because they can force repayment of large amounts or even all of the advance credit.
The Bottom Line
For a 2025 return, the worst case under 400% of poverty is $1,625 single or $3,250 otherwise. At 400% or more, and on every return for a tax year beginning after 2025, the worst case is the whole excess.
That makes the estimate you give the Marketplace a real financial decision rather than a formality, especially for self-employed and variable-income households. If your income is lumpy, look at self-employed health insurance costs and consider whether taking less advance credit, or none, is the cheaper form of insurance against a spring surprise. If a reconciliation bill lands anyway, the IRS says it routinely works out payment arrangements the same way it does for any other balance due, and the general tactics are in medical bill payment plans.
Enrollment timing is a separate question, covered in when open enrollment happens. And this page explains the rules, not your return. For your own numbers, work from the IRS instructions for your tax year or use a preparer.