Open enrollment is over. Your pipeline did not close with it.
From February through October, the ACA special enrollment period is where most of your marketplace production happens. But in 2026, the rules around SEPs changed in ways that create real compliance exposure for agents who are not paying attention.
The low-income SEP is gone. Income self-attestation has new limits. CMS is scrutinizing agent activity more aggressively than it has in years. And some rule changes that were blocked by a federal court are still pending a final ruling.
Here is what you need to know before you enroll another SEP client.
The 2025 Marketplace Integrity and Affordability Final Rule, issued by CMS in June 2025, made several changes to how SEPs work for plan year 2026. Not all of them went into effect. A federal court issued a nationwide stay on several provisions in August 2025, blocking them while litigation plays out.
Here is the plain-language breakdown.
The low-income SEP is permanently gone for 2026. Clients with household incomes at or below 150% of the federal poverty level (about $22,590 for a single person) could previously enroll in ACA marketplace coverage year-round. That ended August 25, 2025. No exceptions. No workarounds. These clients can only enroll now if they have a qualifying life event that triggers a standard SEP, or they wait for the next open enrollment period.
The One Big Beautiful Bill (OBBBA), signed July 4, 2025, made this restriction even stickier. Even if CMS reopens an income-based SEP in 2027, anyone using it without a qualifying life event will be ineligible for premium tax credits. For low-income clients, that means coverage becomes essentially unaffordable. The income-based SEP, in practice, is gone indefinitely.
Income verification has tighter limits. Self-attestation of income still applies in most cases. But starting August 25, 2025, two new situations trigger a Data Matching Issue (DMI) that requires documentation:
When a DMI is triggered, your client has 90 days to submit documentation. The automatic 60-day extension that previously existed has been eliminated. No documentation, no premium tax credits until the issue is resolved.
Failure-to-reconcile now costs clients faster. Previously, clients who failed to file taxes and reconcile their APTC had a two-year grace period before losing subsidy eligibility. For 2026, that window tightened to one year. A client who did not reconcile their 2025 APTC when filing taxes will be ineligible for premium tax credits in 2026.
A new "preponderance of evidence" standard applies to agent discipline. CMS finalized a lower evidentiary threshold for terminating an agent's or broker's marketplace agreement. In plain terms, they do not need a mountain of proof to pull your contract. If complaints or documentation inconsistencies point to your enrollments, that is enough to start an investigation.
A federal district court in Maryland issued a stay on August 22, 2025, blocking several provisions while the lawsuit City of Columbus v. Kennedy plays out. Here is what is currently on hold:
These provisions have not gone away. The administration is appealing. Some of them also appear in the OBBBA with later effective dates, starting as early as 2028. Treat these as coming, not cancelled.
Despite all the changes, standard life-event SEPs are fully intact. Your clients can still enroll outside open enrollment if they experience:
In most cases, clients have 60 days from the qualifying event to enroll. Coverage generally starts the first day of the month after plan selection and payment of the first month's premium. Get the event date right. Incorrect effective dates create compliance flags.
Enrolling clients on income alone. The low-income SEP is over. Clients who "just need coverage" are not a qualifying life event. If you are enrolling clients without a documented QLE, you are creating liability for yourself.
Skipping documentation because the court blocked pre-enrollment verification. The stay does not mean documentation does not matter. SEP enrollments are heavily audited. If a client's SEP cannot be verified later, coverage can be revoked retroactively. Collect documentation upfront regardless of what the court says.
Missing the DMI window. When a DMI is triggered, 90 days is the deadline. No extensions. Clients who do not respond on time lose their APTC. Set reminders the moment you see a DMI on an application.
Not checking prior-year reconciliation status. Before you submit a 2026 SEP application, ask your client if they filed their 2025 taxes and reconciled their APTC. One year of failure to reconcile now triggers ineligibility. Knowing this before you apply saves you and your client a denial.
Use this for every SEP enrollment you process this year.
The SEP rule changes in 2026 do two things at the same time: they shrink the eligible pool and raise the compliance bar. That is frustrating. It is also an opportunity.
Agents who know the rules will write clean business. Clean business does not get audited. It does not generate complaints. It does not cost you your marketplace certification.
The agents who are scrambling right now are the ones who leaned heavily on the low-income SEP and have not adjusted their workflows. You do not have to be one of them.
What is the ACA special enrollment period? An ACA special enrollment period (SEP) is a window outside of the annual open enrollment period when individuals can enroll in or change a Marketplace health plan. To qualify, you must experience a qualifying life event such as losing coverage, getting married, having a baby, or moving to a new coverage area.
Is the low-income SEP still available in 2026? No. The monthly SEP for individuals with household incomes at or below 150% of the federal poverty level ended on August 25, 2025. It is not available for plan year 2026. The One Big Beautiful Bill also ties any future version of this SEP to losing premium tax credit eligibility, making it effectively gone for the foreseeable future.
What documents do clients need for a 2026 SEP enrollment? It depends on the qualifying life event. Common examples include: a loss-of-coverage letter from a prior insurer or employer, a marriage certificate, a birth certificate, or proof of a qualifying move. Collect documentation before you submit, even though pre-enrollment verification is currently stayed by court order.
What happens if a client's SEP cannot be verified? If verification fails after enrollment, coverage can be revoked retroactively. The client may also face repayment of premium tax credits received during the coverage period. This is why documentation matters even without a pre-enrollment verification requirement.
How long does a client have to enroll once a qualifying life event happens? In most cases, 60 days from the date of the qualifying event. Some SEPs, like loss of Medicaid, allow 90 days. Get the event date right. The effective date of coverage depends on when in that window the client enrolls.
What is a Data Matching Issue (DMI) and how does it affect a 2026 application? A DMI is triggered when the information on a Marketplace application does not match data from federal sources. For 2026, a DMI can be triggered if a client has no tax data on file or if their projected income puts them above 100% of the federal poverty level but federal records show otherwise. Clients have 90 days to resolve a DMI before losing premium tax credit eligibility.
What is the new "preponderance of evidence" standard for agents? CMS finalized a lower evidence threshold for terminating an agent or broker's Marketplace agreement. Previously, the bar was higher. Now, if a pattern of complaints or documentation errors points to an agent's enrollments, CMS has more flexibility to act. This makes clean documentation more important than ever.
Are the 2026 SEP rule changes permanent? Several of the finalized changes are temporary and set to sunset on December 31, 2026. However, some provisions also appear in the One Big Beautiful Bill with later effective dates. The rules are not likely to get more lenient going forward.
Tighter rules mean less room for error. Every SEP enrollment you touch in 2026 needs accurate income data, a documented qualifying life event, and a clean paper trail.
That is a lot to manage manually, especially when you are running multiple clients through the process at the same time.
Quotit keeps it organized. From your first client conversation to submitted application, you have real-time plan data, side-by-side comparisons, and a built-in CRM to track every enrollment, document, and follow-up in one place. No sticky notes. No switching between carrier sites. No wondering if you missed a step.
SEP season rewards the agents who are prepared. Quotit helps you be one of them.
The information in this blog is intended for general educational purposes and reflects publicly available CMS guidance as of March 30, 2026. SEP rules, court rulings, and implementation details are subject to change. This post does not constitute legal or regulatory advice. Always consult CMS.gov or a qualified compliance professional for guidance specific to your market and situation.