ACA Health Insurance Guides for Arizona

By Samuel Tripp · Updated November 10, 2026

Buying your own health insurance in Arizona? These plain-English guides cover the Health Insurance Marketplace, which Arizona runs through HealthCare.gov: when you can enroll, how premium tax credits work, how to choose a plan, and what to do when your situation changes.

Short answer: For 2027 coverage, Open Enrollment on HealthCare.gov runs November 1, 2026 through January 15, 2027. Pick a plan by December 15 for coverage that starts January 1. Outside that window, you generally need a qualifying life event, such as losing job-based coverage, to enroll.

Open Enrollment and choosing a plan

Premium tax credits and income

When your situation changes

Getting close to 65

Looking for something else? Browse all of our guides.

This content is for educational purposes only and is not medical, tax, or legal advice. Rules, dates and eligibility can change; confirm details with HealthCare.gov, the IRS or a licensed agent.

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