Excess Premium Tax Credit Repayment in 2026: The Cap Is Gone.

A sole proprietor picks a silver plan on the marketplace in November and estimates the coming year's income at $31,300, because that is roughly what the last two years looked like. The marketplace pays an advance credit straight to the insurer every month. Then the year goes well: a long project renews, two invoices land in December, and the return comes in at $56,000. Excess premium tax credit repayment in 2026 no longer stops where it used to, so the bill on that return is $3,512 instead of $1,625.

Two changes hit the same taxpayer this year, and they came from different places. Congress let the enhanced credit expire on schedule at the end of 2025, and separately, in the One Big Beautiful Bill Act (P.L. 119-21), repealed the repayment cap. Reviving the first would not restore the second.

The cap lived in §36B(f)(2)(B), which limited the additional tax on excess advance payments to a flat dollar amount whenever household income landed under 400% of the poverty line. On a 2025 return the limits were $375 or $750 below 200% of the poverty line, $975 or $1,950 from 200% to 300%, and $1,625 or $3,250 from 300% to 400%, the smaller figure in each pair for single filers. Section 71305 removed it for tax years beginning after December 31, 2025, and the IRS confirmed the result in Fact Sheet 2025-10: no cap, and you repay the full excess. It computes in Part III of Form 8962 and lands on Schedule 2 as additional tax.

The second change is eligibility. Section 36B(c)(1)(A) defines an applicable taxpayer as one whose household income sits between 100% and 400% of the federal poverty line. The American Rescue Plan Act suspended that ceiling by adding §36B(c)(1)(E), and the Inflation Reduction Act carried the suspension through 2025. Nothing carried it into 2026. The House passed a three-year extension on January 8, 2026 by 230 to 196, and it has not moved in the Senate. I would not plan around it.

Coverage for 2026 runs on the 2025 HHS poverty guidelines, so 400% of the poverty line is $62,600 for one person and $128,600 for a family of four in the 48 contiguous states. At $62,599 of household income a single filer can be owed thousands of dollars of credit. At $62,601 the credit is zero and the entire advance comes back. It is a cliff, like the Medicare premium surcharge: one dollar decides the whole result.

The income being measured is not adjusted gross income. Under §36B(d)(2), household income is your modified AGI plus the modified AGI of every dependent required to file, and modified AGI is AGI increased by tax-exempt interest, the nontaxable part of Social Security benefits, and excluded foreign earned income. Long-term capital gains count. A Roth conversion counts. Because the measure starts at AGI, above-the-line deductions help and the standard deduction does nothing.

In between, the credit is the benchmark silver premium minus a set percentage of household income. Rev. Proc. 2025-25 fixes that percentage for 2026: 2.10% below 133% of the poverty line, rising band by band to 9.96% flat from 300% to 400%, interpolated inside each band. The required contribution near the top of that range is close to a tenth of income, and the credit shrinks fast as income rises, so a repayment can be large even for someone who stays well under the cliff.

One thing softens this for self-employed filers, and it gets missed constantly. Treas. Reg. §1.162(l)-1(a) caps the deduction for self-employed health insurance at the lesser of the premiums less the credit attributable to them, or the premiums not paid through advance credit payments plus the additional tax imposed under §36B(f)(2)(A). That second prong is the repayment. Hand back $3,512 and the §162(l) deduction you claim on Form 7206 for the same year rises by up to that amount, worth roughly $773 at a 22% federal rate. The deduction does not reduce self-employment tax.

The calculation is circular, because the deduction lowers household income, which raises the credit, which lowers the deduction. Rev. Proc. 2014-41 supplies two ways through it: an iterative method you repeat until successive answers differ by less than $1, and a shorter alternative method. Software runs one of them silently, so check that Form 7206 reflects the repayment before you file.

Reconciliation happens on the return, but every lever is pulled during the year, and five months of it are left. Report the income change to the marketplace today. Advance credits are recalculated going forward, so cutting the monthly payment for the rest of 2026 shrinks the excess you repay. Waiting until December means five more months of overpayment to hand back.

After that it is an income problem. A deductible retirement contribution is the cleanest lever, because it lands above the line: a solo 401(k) or a SEP moves real money out of AGI, and the choice between them turns on how much income there is to work with. Health savings account contributions do the same, $4,400 for self-only and $8,750 for family coverage in 2026, but only if the plan you bought is a qualifying high deductible plan, and most silver marketplace plans are not. Timing helps too: an invoice sent January 2 instead of December 20, or a Roth conversion pushed into next year.

If your income is genuinely unpredictable, look at declining the advance payments and claiming the whole credit on the return instead. You carry the full premium during the year, which is a real cash flow cost, and in exchange there is nothing to reconcile and nothing to repay. Now that the cap is gone, that trade is often worth it.

One asymmetry runs the other way. If household income comes in below 100% of the poverty line and the exchange estimated at enrollment that you would be between 100% and 400%, Treas. Reg. §1.36B-2(b)(6) treats you as an applicable taxpayer anyway and you keep the credit, absent intentional or reckless disregard for the facts. Falling out the bottom is forgiven. Rising out the top is not.