If you buy your health insurance through the Marketplace and get help paying the premiums, this one is worth a few minutes of your time. Some changes to the Premium Tax Credit are already law and apply to your 2026 tax return. Others are proposed and would phase in over the next few years.

You do not need to panic. But a little planning now can help you avoid an unwelcome surprise next spring.

On October 14, 2026, Treasury and the IRS released proposed regulations (REG-101576-26) that would put recent changes to the Premium Tax Credit into regulatory form. Here is what they say, in plain English.

First, a Quick Refresher

The Premium Tax Credit (PTC) is a refundable tax credit that helps eligible taxpayers afford health insurance purchased through the Health Insurance Exchanges, also called Marketplaces. Many people take the credit in advance, as payments that lower their premiums during the year. When you file your return, the advance payments are compared with the credit you actually qualify for.

Change #1: The Repayment Cap Is Gone

This is the change most likely to affect your tax bill, and it is already law.

Under the old rules, some taxpayers who received more in advance credits than they ultimately qualified for were protected by income-based repayment caps. For tax years beginning after December 31, 2025, those caps no longer exist. The proposed regulations would update the written rules to match.

In plain English: if your advance payments end up higher than the credit you qualify for, there is no longer a limit on how much of the excess you have to repay. 2026 is the first tax year this applies to.

That makes the information on file with your Marketplace more important than ever. Advance credits depend on details like your household income and family size, and those are exactly the items Marketplaces would be required to verify under the proposed rules.

Change #2: Who Qualifies Is Narrowing in 2027

Beginning in 2027, the proposed rules would limit the PTC to U.S. citizens, U.S. nationals, and certain lawfully present noncitizens.

For tax years after 2026, if your household includes a lawfully present person who is not an "eligible alien" under the tax code, you would generally leave that person's premiums out when calculating the credit. For households receiving advance payments, Marketplaces would also leave those amounts out of the premiums reported on Form 1095-A. The proposal also updates the rules for households that include people who are not lawfully present.

The proposal also removes language from an older rule that let certain lawfully present immigrants with household income below 100% of the federal poverty level qualify for the credit if they were ineligible for Medicaid because of their immigration status. The law behind that provision was repealed for tax years beginning after 2025.

If your household includes people with different immigration statuses, it is worth talking with us about how your premiums will be counted.

Change #3: More Checking Before Credits Are Paid

For tax years beginning after December 31, 2027, a month would generally count as a PTC coverage month only if the Marketplace verifies the required enrollment information. For people receiving advance payments, that includes household income, family size, eligibility for other minimum essential coverage, and, when it applies, eligible-alien status.

HHS is expected to issue parallel proposed regulations on how Marketplaces will carry out these verification steps.

The proposal also addresses Medicaid community-engagement requirements. A person who would otherwise qualify for Medicaid but does not meet those requirements is generally treated as eligible for Medicaid coverage for PTC purposes, which makes them ineligible for the credit in those months. Community engagement can include working, being enrolled in an educational program, or taking part in a work program or community service at least 80 hours a month.

The Timeline at a Glance

• Tax years beginning after December 31, 2025 (2026): The repayment cap is repealed. This is law.

• Tax years after December 31, 2026 (2027): Eligibility is limited to citizens, nationals, and certain lawfully present noncitizens, and premiums for lawfully present people who are not eligible aliens are left out of the credit calculation. This is proposed.

• Tax years beginning after December 31, 2027 (2028): Marketplaces must verify required enrollment information for a month to count as a coverage month. This is proposed.

What Is Final and What Is Not

Proposed means proposed. These regulations are open for public comment until November 30, and details could change before anything is finalized. The repeal of the repayment cap, however, comes from the law itself and already applies to your 2026 return.

What You Can Do Now

• Compare your expected 2026 income with the income estimate on file with your Marketplace. With no repayment cap, a gap between the two can cost more than it used to.

• Report changes in income or household size to your Marketplace as soon as they happen.

• Keep your Form 1095-A, the Health Insurance Marketplace Statement, and check it carefully before you file.

• If your household includes members with different immigration statuses, talk to us about how the credit will be calculated.

The Bottom Line

The biggest takeaway is simple: the safety net for overestimating your advance credit is gone, and the rules around who qualifies and how eligibility is verified are tightening in the years ahead. Staying on top of your Marketplace information is the best way to stay ahead of both.

If you receive advance premium tax credits and are not sure how these changes affect your household, contact our office. We can review your situation and help you plan before the new rules take effect.