Health insurance is not required in Illinois. The state has never enacted its own individual mandate, and the federal tax penalty for going without coverage has been $0 since 2019. No agency will fine you for being uninsured. What the law does do is set rules for the plans sold here, give you ways to get covered when your situation changes, and provide a path to fight back when an insurer denies a claim.
Skipping coverage still carries real financial risk. One emergency room visit or unexpected diagnosis can produce tens of thousands of dollars in bills, and the absence of a penalty doesn’t change that math.
What Counts as Coverage Under Illinois Law
Non-grandfathered plans sold in the individual and small group markets have to cover ten categories of essential health benefits under the Affordable Care Act: emergency care, hospitalization, maternity and newborn care, mental health and substance use treatment, prescription drugs, rehabilitative services, lab work, preventive care, and pediatric services including dental and vision for children.1Centers for Medicare & Medicaid Services. Information on Essential Health Benefits Benchmark Plans Illinois uses its own benchmark plan to define exactly what falls within each category.
Large group and self-insured employer plans don’t have to follow the essential health benefits framework, though most cover similar services anyway. If you shop on the individual market or through a small employer, every plan you see will include those ten categories by law.
How to Get Covered If You Want To
Get Covered Illinois
Get Covered Illinois is the state’s official ACA marketplace, where residents compare health and dental plans, check whether they qualify for premium tax credits, and enroll.2Get Covered Illinois. Get Covered Illinois – Home For the 2026 plan year, the deadline for coverage starting February 1, 2026 was extended to January 31.3Get Covered Illinois. January 31 2026 Extension Press Release
Outside open enrollment, you can still sign up if you have a qualifying life event: losing job-based coverage, getting married, having or adopting a child, moving, or losing Medicaid or CHIP. You have 60 days from the event to enroll in most cases. If you lost Medicaid or CHIP, that window extends to 90 days.4HealthCare.gov. Getting Health Coverage Outside Open Enrollment
Medicaid
Illinois expanded Medicaid under the ACA, so most adults with household income at or below 138% of the federal poverty level qualify. Enrollment is open year-round. You can apply through Get Covered Illinois or directly through the Illinois Department of Healthcare and Family Services.
All Kids
All Kids covers Illinois children regardless of immigration status or health condition, including doctor visits, hospital stays, prescription drugs, vision, and dental.5Illinois Department of Healthcare and Family Services. About All Kids The program is tiered by income. All Kids Assist reaches families up to 318% of the federal poverty level; the Share, Premium Level 1, and Premium Level 2 tiers apply at higher incomes and carry progressively higher premiums and co-payments.6Illinois Department of Healthcare and Family Services. All Kids Income Standards and Cost Sharing
What to Do If You Lose Job Coverage
Losing employer coverage is when the question of whether to carry insurance gets urgent. Three options usually sit on the table at once.
Federal COBRA
If you lose job-based insurance because of a termination (other than for gross misconduct) or a reduction in hours, federal COBRA lets you keep your employer’s group plan for up to 18 months. Dependents who lose coverage because of divorce, the death of the covered employee, or aging off a parent’s plan can get up to 36 months. You have at least 60 days from the later of your coverage loss date or the date you receive your COBRA notice to elect. The cost is high: you pay the full premium, both employer and employee shares, plus a 2% administrative fee.
Illinois Continuation Coverage
Illinois has its own continuation law, sometimes called mini-COBRA, for employees of smaller employers whose plans aren’t subject to federal COBRA. If you’ve been covered under a group health, HMO, or major medical plan for at least three continuous months and lose it because of termination or reduced hours, you can continue that coverage for up to 12 months at no more than the group rate.
Marketplace Special Enrollment
Losing job-based coverage also opens a 60-day special enrollment window on Get Covered Illinois. A marketplace plan often costs less than COBRA, especially with premium tax credits. Compare both before your COBRA election deadline runs out, because once you elect COBRA you generally cannot switch to a marketplace plan until the next open enrollment or another qualifying event.4HealthCare.gov. Getting Health Coverage Outside Open Enrollment
Short-Term Plans Are Not an Option in Illinois
As of January 1, 2025, Illinois prohibits the sale of short-term limited-duration insurance to residents. The ban covers new policies and renewals, and it reaches insurers selling short-term coverage through groups or associations based in other states.7Illinois Department of Insurance. Short-Term Limited Duration Insurance Short-term plans don’t have to cover essential health benefits and can deny coverage based on pre-existing conditions, which is why the state closed them off. For temporary gaps, the practical choices are a marketplace plan through special enrollment or COBRA-style continuation.
What Your Employer Owes You
Employers with 50 or more full-time employees, counting full-time equivalents, are applicable large employers under the ACA. They must offer full-time workers and their dependents the chance to enroll in minimum essential coverage that meets affordability and minimum value standards.8Internal Revenue Service. Affordable Care Act Tax Provisions for Employers For plan years beginning in 2026, coverage is affordable if your share of the premium for the lowest-cost self-only option is no more than 9.96% of household income.
Illinois adds its own layer through the Consumer Coverage Disclosure Act. Employers providing group health insurance to Illinois workers must give each employee a written comparison showing which state-regulated essential health benefits their plan covers and which it does not. You should receive it when hired, once a year after that, and any time you ask for it.9Illinois Department of Labor. Consumer Coverage Disclosure Act The disclosure goes directly to employees, not to a state agency.
Fighting a Denied Claim
Carrying insurance only matters if it pays when you use it. Illinois law gives you a structured path to challenge a denial or a coverage termination.
Start with an internal appeal through your insurer. The company must have different personnel review the denied claim, and you should receive a written explanation. If that appeal upholds the denial, you can request an external review by an independent review organization approved by the Illinois Department of Insurance. You have four months from the final adverse determination to file.10Illinois Department of Insurance. How to File an External Review Denials involving medical judgment, experimental treatment, pre-existing condition exclusions, and coverage rescissions all qualify. You can submit online through the IDOI Message Center, or by email, fax, or mail. If your situation is urgent or life-threatening, your provider can request an expedited review that runs the internal appeal and external review at the same time.
Illinois law requires insurers to comply with the external reviewer’s decision, so the outcome is binding rather than advisory. The Illinois Department of Insurance also takes general complaints about insurer conduct, including billing disputes, coverage denials, and processing delays.11Illinois Department of Insurance. How to File a Complaint The Health Carrier External Review Act sets the legal framework for these proceedings.12Illinois General Assembly. Illinois Code 215 ILCS 180 – Health Carrier External Review Act