Does Illinois Tax Retirement Income?
Illinois generally subtracts federally taxed Social Security, qualified pensions, and qualified retirement-plan distributions from state income.
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Quick answer
Illinois generally subtracts federally taxed Social Security, qualified pensions, and qualified retirement-plan distributions from state income. The top state individual income-tax rate shown for 2026 is 4.95%.
Source for review: Illinois Department of Revenue, Publication 120
How Illinois Treats Each Retirement Income Stream
| Income stream | Illinois treatment |
|---|---|
| Social Security | Social Security benefits are not taxed by Illinois. |
| Public and private pensions | Qualified public and private pension income is generally subtracted from Illinois base income. |
| Traditional 401(k) and IRA withdrawals | Qualified IRA, 401(k), and similar retirement-plan distributions are generally subtracted, although an early or nonqualifying payment can be treated differently. |
| Military retirement pay | Military retirement pay included in federal adjusted gross income is generally subtracted on the Illinois return. |
Illinois can be more favorable for retirement cash flow than its general tax reputation suggests. The tradeoff appears elsewhere, especially property taxes and the state estate tax.
The State Exclusion That Changes the Math
Illinois uses an income subtraction rather than a small age-based cap. That is why a qualifying distribution can be fully exempt even though Illinois has a 4.95% flat rate on other income.
Model the actual eligibility rule
Confirm that each distribution is a qualifying retirement payment. The label on Form 1099-R and the plan rules matter more than the retiree simply being over age 65.
A Worked Retirement-Income Example
A retiree with $30,000 of Social Security, $40,000 of qualified 401(k) distributions, and a $20,000 qualified pension can generally subtract all $90,000 from Illinois taxable income. Interest, wages, and non-retirement investment income remain outside that retirement subtraction.
This is a state-income example, not a tax return
Federal tax, local income tax, filing status, deductions, basis, Roth treatment, residency, and plan-specific rules can change the result. Use the example to compare structure, not as individualized tax advice.
Military Retirement and Transfer-Tax Fine Print
Military retirement: Military retirement pay included in federal adjusted gross income is generally subtracted on the Illinois return.
Estate and inheritance tax: Illinois imposes a separate estate tax, with a $4 million exclusion amount under current guidance.
Should Retirement Taxes Drive a Move to Illinois?
Illinois can be more favorable for retirement cash flow than its general tax reputation suggests. The tradeoff appears elsewhere, especially property taxes and the state estate tax.
Confirm that each distribution is a qualifying retirement payment. The label on Form 1099-R and the plan rules matter more than the retiree simply being over age 65.
Compare the annual retirement-income result with property tax, insurance, sales tax, health-care access, housing cost, and the residency facts needed to leave the former state. For a broader comparison, use our 51-jurisdiction retirement tax table.
Illinois Retirement Tax FAQs
Planning retirement income in Illinois?
We can model the state and federal interaction before a large distribution, Roth conversion, or interstate move. Educational content is not individualized tax advice.
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