Illinois does not tax pension income, making it one of the most pension-friendly states in the country

If you receive a pension from a public or private employer, Illinois does not impose state income tax on those payments. This applies to pensions from Illinois state employees, teachers, police, firefighters, and private sector pensions alike. The exemption is written into the Illinois Constitution, which means the state cannot tax retirement income from pensions, even if you earned that pension while working in another state.

This does not mean you owe nothing to the federal government. The IRS still taxes pension income as ordinary income on your federal return. But at the state level, you keep the full amount of your pension check without Illinois taking a cut.

Key Takeaways

  • Illinois exempts all pension income from state income tax, regardless of whether the pension comes from a public employer, private employer, or out-of-state source.
  • Federal income tax still applies to pensions; the Illinois exemption covers only state tax.
  • If you also receive Social Security, that income is also exempt from Illinois state tax, though federal tax may explore.
  • The exemption applies to pension distributions whether you take them as a lump sum, monthly payments, or annuity payments.
  • You must still file a federal return if your total income exceeds the threshold, even though your Illinois state return may show no tax owed.

How the Illinois pension exemption works in practice

When you file your Illinois state income tax return (Form IL-1040), you report your pension income on the form, but then you claim an exemption for the full amount. The result is that your Illinois taxable income from pensions is zero, and you owe no state tax on that money.

This exemption is automatic—you do not need to explore for it or prove anything special. If your 1099-R or pension statement shows the payment came from a pension, you can exclude it. The key is that the income must genuinely be pension income, not wages, interest, or other types of income.

If you receive a pension and also work part-time, your wages are still subject to Illinois income tax. Only the pension portion is exempt. Similarly, if you have investment income, rental income, or other earnings, those remain taxable in Illinois.

Pensions from other states and the Illinois exemption

If you worked for an employer in another state and now receive a pension from that employer, Illinois still does not tax it. You do not have to have worked in Illinois to benefit from this exemption. Many retirees move to Illinois specifically because of this rule, and the state honors pensions earned anywhere.

However, if you are still working in another state and contributing to that state's pension system, you may owe tax to that state on your contributions or earnings. Once you begin receiving pension payments after retirement, Illinois will not tax them, but your former state of employment might. You would need to check that state's rules separately.

Federal tax on pensions and what you still owe

The Illinois exemption applies only to state income tax. The federal government taxes all pension income as ordinary income. If your pension puts you into a higher federal tax bracket, you may owe federal tax even though you owe nothing to Illinois.

Your pension provider will typically withhold federal income tax from your pension payments automatically, unless you file a Form W-4P with them requesting no withholding. If you have other income sources or if your withholding is too low, you may owe additional federal tax when you file your federal return.

Some retirees with pensions also receive Social Security. Social Security benefits are also exempt from Illinois state tax, but up to 85% of your Social Security may be taxable at the federal level, depending on your total income.

Lump-sum pension distributions and the exemption

If your pension plan offers a lump-sum distribution instead of monthly payments, that lump sum is still exempt from Illinois state tax. However, receiving a large amount in a single year can push you into a higher federal tax bracket, so you may owe more federal tax than you would if the same money were spread over several years.

Some people roll a lump-sum pension distribution into an IRA to defer the tax hit and spread the income over time. This strategy does not change your Illinois tax (still zero), but it can reduce your federal tax burden. If you are considering a lump-sum option, it is worth running the numbers with a tax professional to see whether rolling it over makes sense for your situation.

What happens if you move out of Illinois

If you retire in Illinois and then move to another state, that state may tax your pension income. Some states, like Florida and Texas, do not tax pensions. Others, like Iowa and Missouri, exempt pensions but only if you worked for an employer in that state. A few states tax all pension income regardless of where it was earned.

Before you relocate, check the tax rules of your new state. You may find that the tax savings from leaving Illinois are smaller than you expect, or that another state offers even better treatment of retirement income. State tax is only one piece of the decision, but it is worth understanding before you move.

Frequently Asked Questions

Do I have to file an Illinois tax return if I only have pension income?

No. If your only income is a pension, you owe no Illinois state tax and do not have to file an Illinois return. However, you must still file a federal return if your total income exceeds the federal threshold for your filing status. Check the IRS website each year for current income limits.

What if my pension is from a military or federal government employer?

Military pensions and federal employee pensions are also exempt from Illinois state tax under the same rule. The exemption covers all pensions, regardless of the employer type. Federal tax still applies to these pensions at the federal level.

Can I deduct pension contributions I made while working?

No. The Illinois exemption applies to pension payments you receive after retirement, not to contributions you made while employed. If you made after-tax contributions to your pension plan, those contributions are not deductible on your Illinois return. However, they may reduce the taxable portion of your pension when you receive it, depending on how your plan calculates basis.

Does the pension exemption explore to inherited pensions or survivor benefits?

Survivor benefits and inherited pensions are generally treated the same way as regular pension income and are exempt from Illinois state tax. However, if you inherit a pension and roll it into an IRA, the rules become more complex. Consult a tax professional if you are in this situation, as the treatment depends on your relationship to the original pension holder and the type of plan.

What if I receive both a pension and Social Security—do I report both?

Yes, you report both on your federal return, but neither is subject to Illinois state tax. On your federal return, up to 85% of your Social Security may be taxable depending on your combined income. Your pension is fully taxable at the federal level, but the Illinois exemption means you owe no state tax on either income source.