Documentation Requirements Tighten for ACA Special Enrollment Periods in 2026
ACA marketplace consumers seeking to enroll outside the annual open enrollment window are encountering considerably more paperwork in 2026 than in past years. According to Solid Health Insurance, verification rules for special enrollment periods "have become significantly stricter" under rules finalized in 2025, with Covered California now requiring pre-enrollment verification for approximately 75% of all special enrollment applications.
Applicants generally have about 30 days after selecting a plan to submit required documents or risk having their coverage canceled. Depending on the qualifying event, that can include a termination letter, a COBRA notice or HIPAA certificate of prior coverage, a Medicaid or CHIP denial notice, a marriage certificate, or a divorce decree or death certificate, per the same report.
The stricter documentation regime coincides with the broader elimination of the year-round low-income special enrollment period, meaning income-based enrollment without a qualifying life event no longer qualifies for marketplace subsidies at all in 2026.
Consumers are advised to gather likely documentation immediately after a qualifying event occurs — rather than waiting until an application specifically requests it — to avoid delays under the newer verification-first process. A full breakdown of common qualifying events and their typical windows is available in our life events insurance deadline guide.