Blog · 14 October 2026

Advance Premium Tax Credit Repayment in 2026: OBBBA Ends the Income Cap on Excess APTC — What US CPA Firms Should Tell Clients

By Keshav Bansal, CA

Starting with tax year 2026, Marketplace enrollees must repay all excess advance premium tax credit (APTC) when they file. Section 71305 of Public Law 119-21 (the One Big Beautiful Bill Act, signed July 4, 2025) struck the income-based cap in IRC §36B(f)(2)(B). So APTC repayment on Form 8962 is now the full difference between the advance payments and the credit the client actually qualifies for. The first returns affected are 2026 returns filed in 2027. For US CPA firms, the window to help clients fix their 2026 income estimates closes at year-end.

What changed: OBBBA §71305 and §36B(f)(2)

Per the US Code text and notes on Cornell LII, IRC §36B(f)(2) now reads in full: if the advance payments for a taxable year exceed the credit allowed, “the tax imposed by this chapter for the taxable year shall be increased by the amount of such excess.” P.L. 119-21 §71305(a) struck the subparagraph (A) designation and heading and all of subparagraph (B), the limit for taxpayers with household income under 400% of the poverty line. Under §71305(c), the change applies to taxable years beginning after December 31, 2025.

The IRS announced the change in IR-2025-127 (December 23, 2025), which updated its Premium Tax Credit FAQs in Fact Sheet 2025-10. FAQ Q31 (updated December 23, 2025) now says: “There is no repayment cap for tax years after 2025. For tax years after 2025, you must repay the full amount by which your advance credit payments exceed your Premium Tax Credit.” An IRS EITC Central page (updated October 7, 2026) says the same. As The Financial Wire (David Keller, October 12, 2026) notes, this removes a cap; it is not a new tax.

How the premium tax credit and APTC work

• Refundable credit: per IRS FAQ Q1, the premium tax credit (PTC) helps eligible people with low or moderate income pay for health insurance bought through the Health Insurance Marketplace. It is refundable, so a client who owes no tax still gets it.
• Income limits: per FAQ Q7, eligibility generally requires household income of at least 100% but no more than 400% of the federal poverty line for the family size. Congress removed the 400% ceiling for tax years 2021 through 2025 only.
• Paid in advance from an estimate: at enrollment, the Marketplace estimates the credit from projected household income and family size. The client can have all, some or none paid monthly to the insurer as APTC (FAQ Q3).
• Reconciled at filing: the Marketplace issues Form 1095-A. If it shows advance payments, the client must file Form 8962 with the return (FAQ Q29).

On the draft 2026 Form 8962 (created April 21, 2026; marked “DRAFT — DO NOT FILE”), line 24 is the total PTC and line 25 is the APTC. If the credit is larger, the net PTC goes on line 26 and on Schedule 3 (Form 1040), line 9, which lowers tax or raises the refund. If the APTC is larger, line 27 is the excess, and it goes straight to Schedule 2 (Form 1040), line 1a. Lines 28 and 29, where the cap was applied, now read “Reserved for future use.”

2025 returns keep the old caps

The new rule starts with tax years beginning after December 31, 2025, so 2025 returns, including late or extended ones filed now, still use the limits. Per the 2025 Instructions for Form 8962, Table 5 caps line 28 based on household income as a percentage of the poverty line (Form 8962, line 5):

• Less than 200%: $375 single; $750 any other filing status.
• At least 200% but less than 300%: $975 single; $1,950 other.
• At least 300% but less than 400%: $1,625 single; $3,250 other.
• 400% or more: no limit; the full line 27 amount is repaid.

Hypothetical illustration (our arithmetic, not from an IRS source): a single filer at 250% of the poverty line has $3,000 of excess APTC. On a 2025 return, Table 5 limits the repayment to $975. With the same facts on a 2026 return, the client repays $3,000. For 2026, a client whose final household income is above 400% generally qualifies for no PTC at all, so every dollar of APTC can come back as tax.

Fix it before year-end: update the Marketplace estimate

With the cap gone, the main tool is to reduce APTC for the months that remain. HealthCare.gov tells enrollees to update their application “as soon as possible” when income or household changes, or pay back the difference at tax time. The IRS lists changes to report: household income, address, employment status, other coverage, birth or adoption, marriage or divorce, and other tax-family changes.

The Financial Wire suggests gathering year-to-date pay stubs, retirement distributions taken so far, expected Social Security and any one-time income. Add what is still expected through December 31 and compare the total with the Marketplace application. On HealthCare.gov, Open Enrollment for 2027 coverage runs November 1 through January 15, with December 15 the last day to choose a plan that starts January 1.

What US CPA firms should tell clients now

• Flag every client with a 2026 Form 1095-A or Marketplace coverage, especially the self-employed, gig workers, early retirees and households whose income varies.
• Run a 2026 income projection now, including bonuses, capital gains, Roth conversions, IRA distributions and Social Security. Compare it with the Marketplace estimate.
• Update the Marketplace application before year-end so APTC falls for the remaining months.
• Plan cash for the gap. Extra withholding or estimated payments can help; see our draft 2027 Form W-4 post for how OBBBA lines show up in withholding.
• Check household and status changes. OBBBA also narrows PTC eligibility for some lawfully present noncitizens: §71302 for taxable years beginning after December 31, 2025, and §71301 for taxable years beginning after December 31, 2026. For the difference between tax residency and immigration status, see tax residency vs immigration status.
• Keep 2025 and 2026 separate. Apply Table 5 caps on 2025 returns. Do not carry them into 2026 projections.
• If the client can’t pay, IRS FAQ Q32 says payment arrangements work the same as for other tax balances. See our guide to IRS collection alternatives.

Where this fits for Tax Brew readers

APTC planning depends on clean year-to-date income figures gathered before December, not in March. Tax Brew provides outsourced bookkeeping and tax prep support to US CPA firms, so your team can focus on client advice. Email info@taxbrewglobal.com.

Check current IRS guidance: this article summarizes IRC §36B(f)(2) as amended by P.L. 119-21 §§71301, 71302 and 71305 (Cornell LII); IRS IR-2025-127 (December 23, 2025) and the IRS Questions and Answers on the Premium Tax Credit (Fact Sheet 2025-10; Q1, Q3, Q7, Q29, Q31, Q32); the IRS EITC Central page on repayment caps (updated October 7, 2026); the 2025 Instructions for Form 8962 (Table 5); the draft 2026 Form 8962 (created April 21, 2026); HealthCare.gov pages on reporting changes, 2025 taxes and Open Enrollment; and The Financial Wire (David Keller, October 12, 2026). Draft forms can change. This is general information, not tax or legal advice. Sources as of 14 October 2026.