Missouri health insurance questions, answered.

Open enrollment runs November 1, 2026 to January 15, 2027. Pick a plan by December 15 if you want coverage to start January 1. Plans chosen from December 16 to January 15 start February 1.

No. Missouri uses the federal Marketplace at HealthCare.gov. Premium tax credits, enrollment dates and special enrollment rules follow the federal system.

Missouri does not have its own coverage mandate or state tax penalty. Going without coverage still leaves you exposed to large medical bills, and you generally can only sign up for a Marketplace plan during open enrollment or after a qualifying life event.

Possibly. Premium tax credits for 2026 go to households between 100% and 400% of the federal poverty level, based on your expected income for the year. Above 400% (about $62,600 for a single person), there is no premium tax credit.

If your household income is at or below 138% of the federal poverty level, you may qualify as an adult under 65. Starting January 1, 2027, you will need to meet work or activity rules unless an exemption applies, and you will renew every six months.

People enrolled in Medicare Part A or Part B are on the state's list of exemptions. Other exemptions include being medically frail, pregnant, or a parent or caretaker of a child 13 or younger.

Missouri allows first terms of up to 12 months and total coverage of up to 36 months with renewals. Insurers decide whether to offer renewals, and some only sell plans of about six months.

A 2024 federal rule set a four-month cap, but in August 2025 federal agencies said they would not prioritize enforcing it while they write a new rule. They told states they could apply their own state definitions, and Missouri's law allows longer plans.

Usually not. Short-term plans can deny you based on health history and typically exclude pre-existing conditions. If you have ongoing health needs, a Marketplace plan is guaranteed to accept you and cover those conditions.

Insurers include UnitedHealthcare, Ambetter from Home State Health, Anthem Blue Cross and Blue Shield, Blue KC, Medica, Oscar and Cox Health Plans. Not all of them sell in every county; every county has at least two insurers and most have four or more.

Yes. Aetna stopped offering Marketplace plans in Missouri at the end of 2025. If you had an Aetna plan, you needed to pick a new plan for 2026.

Most insurers raised rates, with average increases of about 15% to 30% for several large insurers. Blue KC was the exception, lowering its average rate by about 4.1% in its 30 western Missouri counties. What you pay depends on your plan, age, county and any subsidy.