If you have health insurance through the Affordable Care Act Marketplace, there’s a new reason to spend a few minutes checking your account before the 2027 enrollment season begins. The Centers for Medicare & Medicaid Services announced that it canceled approximately 315,000 Marketplace policies covering more than 760,000 people on August 31, 2026, after CMS and insurers investigated the policies and confirmed the enrollments were unauthorized. CMS estimates that canceling those policies will result in the return of roughly $2.2 billion in advance payments of the premium tax credit, or APTC. The action is part of a broader crackdown on unauthorized Marketplace enrollment and questionable activity involving a subset of insurance agents and brokers. Even if you haven’t noticed anything wrong with your coverage, the scale of the cancellations makes checking exactly what is attached to your Marketplace account a sensible financial housekeeping task. Here’s everything beneficiaries need to know.
