Retirement Planning in Illinois: What You Need to Know
Retirement planning in Illinois requires factoring in the state's unique combination of cost of living, tax treatment of retirement income, and local income levels. Illinois's cost of living index of 94 means that a dollar goes further in Illinois than in most other states, which directly affects how much nest egg you need.
Using the 4% withdrawal rule and an 80% income replacement target, a Illinois household earning the median $$72,000 needs approximately $1,440K in investable assets to retire comfortably. Social Security benefits — averaging $1,700–$1,900/month per recipient — offset this requirement.
Illinois vs. National Retirement Benchmarks
| Metric | Illinois | National Avg |
|---|---|---|
| Median Household Income | $72,000 | $74,580 |
| Cost of Living Index | 94 | 100 |
| State Income Tax (top) | 4.95% | ~5.5% |
| Est. Nest Egg Needed (4% rule) | $1,440K | $1,490K |
Traditional vs. Roth Accounts in Illinois
In Illinois, traditional 401(k) and IRA contributions reduce both your federal and state taxable income (4.95% top rate). Roth contributions provide tax-free growth but no upfront deduction. If you expect to stay in Illinois in retirement, Roth accounts can be attractive if you anticipate being in a similar or higher tax bracket later — you pay 4.95% state tax now in exchange for zero state tax on future withdrawals.