Everything Illinois residents need to know — state taxes, best savings rates, housing market, retirement rules, and money-saving strategies specific to IL.
Flat 4.95% income tax on all income. No deductions or brackets — everyone pays the same rate.
HYSA interest is taxed as ordinary income at both federal and Illinois state rates. Your effective after-tax HYSA yield in Illinois is approximately 3.4% on a 4.50% APY account (assuming 22% federal + state tax blended).
| Account Type | Best APY | After Tax (IL) | Best For |
|---|---|---|---|
| High-Yield Savings (HYSA) | 4.50–4.60% | ~3.4% | Emergency fund, short-term savings |
| 6-Month CD | 4.80% | ~3.63% | Money not needed for 6 months |
| I Bonds (via TreasuryDirect) | Variable (CPI-based) | State tax exempt | Inflation hedge; 1-year lockup |
| Roth IRA (invested in index funds) | ~7% long-term | 100% tax-free | Retirement savings |
| Traditional bank savings | 0.01–0.10% | Losing to inflation | Avoid |
High property taxes (2.27% avg effective rate) offset no-bracket simplicity.
Down payment assistance: IHDA offers programs for first-time buyers in Illinois. Income and purchase price limits apply — check the agency website for current program details.
Illinois taxes retirement income as follows: 401k and Traditional IRA withdrawals are taxed as ordinary income at state rates. Check Illinois-specific exemptions for Social Security income and pension income, as rules vary by state and income level.