ACA eligibility and income basics in Illinois (no guarantees, just how it works)
ACA financial help is typically based on household size and income, plus local plan pricing and the plan you choose. Eligibility rules can change over time, and other programs (like Medicaid) may apply depending on your situation.
This page explains the basics so you understand what to look for, but you should confirm your final eligibility and premium through the official marketplace.
Important note
Marketplace (ACA) eligibility and premium tax credits depend on your household size, income, ages, ZIP code, and the plan you choose. Rules and plan pricing can change over time.
Use this page to understand the basics for Illinois. For your exact eligibility and final monthly premium, confirm on the official marketplace.
Important for Illinois
Illinois uses Get Covered Illinois marketplace. Medicaid expansion state with robust programs.
What "household income" usually means
Marketplace applications generally use household income information to estimate eligibility. If your income changes during the year, your eligibility and the best plan choice can change too.
2025 Federal Poverty Level (FPL) Reference
ACA eligibility is based on percentages of the Federal Poverty Level, which changes annually. The table below shows 2025 FPL guidelines for the 48 contiguous states (Alaska and Hawaii have higher thresholds). These are reference numbers—your actual eligibility depends on your full household details.
| Household Size | 100% FPL | 138% FPL (Medicaid) | 150% FPL (CSR) | 250% FPL (CSR) | 400% FPL |
|---|---|---|---|---|---|
| 1 person | $15,650 | $21,597 | $23,475 | $39,125 | $62,600 |
| 2 people | $21,150 | $29,187 | $31,725 | $52,875 | $84,600 |
| 3 people | $26,650 | $36,777 | $39,975 | $66,625 | $106,600 |
| 4 people | $32,150 | $44,367 | $48,225 | $80,375 | $128,600 |
| 5 people | $37,650 | $51,957 | $56,475 | $94,125 | $150,600 |
| 6 people | $43,150 | $59,547 | $64,725 | $107,875 | $172,600 |
Source: 2025 Federal Poverty Guidelines, U.S. Department of Health and Human Services. These figures are approximate and may be adjusted. Use the official marketplace for authoritative eligibility determination.
What Each Income Threshold Means
Below 138% FPL
In states that expanded Medicaid (including Illinois), adults with income below this level typically qualify for Medicaid (HFS)—free or very low-cost coverage with no monthly premium.
100–150% FPL
If you don't qualify for Medicaid, you likely receive the largest premium tax credits and enhanced Cost-Sharing Reductions (CSR) on Silver plans. Your deductible could be as low as $0-$100.
150–250% FPL
You still qualify for significant premium tax credits and some level of Cost-Sharing Reductions on Silver plans, reducing your deductible and copays compared to other tiers.
250–400% FPL (and above)
You may still receive premium tax credits (especially under current enhanced subsidies), but CSR benefits are not available above 250% FPL. Compare all metal tiers since Silver CSR benefits won't apply.
Worked Example: How FPL Affects Eligibility
Scenario: A family of 3 in Illinois earning $45,000/year.
- 100% FPL for a family of 3 = $26,650
- $45,000 ÷ $26,650 = approximately 169% FPL
- This is above the 138% Medicaid threshold → the family would shop on Get Covered Illinois
- At 169% FPL, they likely qualify for premium tax credits plus Cost-Sharing Reductions on Silver plans
- A Silver plan that normally costs $800/month might cost this family $200-$350/month after subsidies
This is an illustration only. Actual premium amounts depend on ages, ZIP code, plan selection, and current program rules. Confirm your eligibility through Get Covered Illinois.
Medicaid (HFS) in Illinois
Illinois expanded Medicaid in 2014, covering adults up to 138% of the Federal Poverty Level through the Healthcare and Family Services (HFS) department. Illinois Medicaid provides comprehensive coverage including medical, dental, vision, and mental health services. The state uses managed care organizations to coordinate most Medicaid benefits.
Additional Programs in Illinois
- All Kids: Covers children up to 300% FPL with comprehensive benefits
- Family Health Plan: Coverage for parents with incomes up to 138% FPL
- Illinois Breast and Cervical Cancer Program: Free screenings and treatment
- Immigrant Health Coverage: Illinois covers some immigrant populations not eligible for federal Medicaid
- Health Benefits for Immigrant Seniors: Coverage for qualifying seniors regardless of immigration status
Why you'll see different answers online
- Some content is outdated or oversimplified.
- Rules and pricing can change over time.
- Eligibility depends on more than one number (ages, ZIP code, plan choices).
Use online guidance for understanding, then confirm specific results in the official marketplace flow.
The practical way to check eligibility
- Start plan preview or enrollment on the official marketplace.
- Enter ZIP code, household size, and ages.
- Enter your best estimate of annual household income.
- Compare estimated monthly premiums and plan designs (deductible/out-of-pocket max).
- If your income is low, review whether Medicaid may apply in your state.
If your income changes mid-year
Income changes can happen due to job changes, overtime, freelance work, or family changes. Updating your Marketplace information helps keep estimates current and reduces the chance of surprises later.
Official Sources
Sources & Disclaimer
Sources:
- HealthCare.gov Glossary — Official ACA terminology and definitions
- CMS ACA Guidance — Federal marketplace rules and eligibility information
- KFF Health Reform Resource Center — Independent research on marketplace trends and enrollment
Last Updated: March 2026
Disclaimer: The information provided is for educational purposes only. Actual costs vary based on individual circumstances, location, age, plan selection, and other factors. Always verify current information with official sources or licensed professionals. This site does not sell insurance or provide medical advice and is not affiliated with any insurance company or healthcare provider.
What to do next
- Subsidy examples (illustrations) — See how subsidies reduce premiums at different income levels
- What affects Marketplace premiums — Learn how age, ZIP code, and tobacco use affect pricing
- Health insurance cost ranges — See full premium ranges for singles, couples, and families
- Understanding deductibles — Learn how deductibles work and how to choose the right plan tier
Last updated: 2026-02-15