Is Social Security Taxed in Illinois in 2026?
Is Social Security taxed in Illinois in 2026? No. Social Security is 100% tax-free in Illinois, and the state exempts most pensions and 401(k) withdrawals from its 4.95% flat income tax. However, Illinois carries the highest property tax in this group at 1.88% (second-highest in the US), significantly impacting homeowners.
Income thresholds shown adjust annually for inflation. Figures reflect the most recently available data — always confirm the current-year threshold with your state's Department of Revenue before filing.
Understanding Illinois's 2026 Retirement Tax Landscape
Illinois does not tax Social Security benefits at the state level. Under Illinois Compiled Statutes (35 ILCS 5/203), Illinois exempts almost all qualified retirement income—including Social Security, traditional pensions, 401(k) distributions, and IRAs—from its flat 4.95% individual income tax. However, Illinois homeowners face the highest property tax burden of any state in this group: an effective property tax rate of 1.88%, ranking second-highest nationally behind New Jersey. While your retirement checks are shielded from state income tax, substantial residential property taxes make Illinois a high-tax state for retiree homeowners overall.
Illinois 2026 Retirement Tax Profile
Calculate Your Federal Taxable Benefits
State taxes on Social Security start with your federally taxable benefits. Use our free interactive tool to compute your Combined Income threshold.
Compare With Other Major Retirement States
Explore how other non-taxing states structure their income taxes, pensions, and property tax burdens:
Frequently Asked Questions (Illinois)
Is Social Security taxed in Illinois?
No. Illinois does not tax Social Security benefits. You subtract all federally taxable Social Security on Illinois Schedule M.
Does Illinois tax pensions and 401(k) withdrawals?
No. Illinois is one of the few states that exempts all qualified employee retirement plans, including traditional pensions, 401(k)s, 403(b)s, and traditional IRAs, from state income tax.
Why is Illinois considered expensive for retirees if retirement income is exempt?
Because Illinois has the second-highest property tax rate in the nation (1.88% effective rate), along with high combined state and local sales taxes (averaging ~8.98%). This shifts the tax burden heavily onto housing and consumer purchases.