Illinois Retirement Tax Guide 2026: Full Retirement Income Exemption, Property Tax Reality & Estate Planning

Illinois has a tax profile that splits cleanly down the middle for retirees: one of the best treatments of retirement income in the United States, paired with one of the worst property tax burdens and a relatively low estate tax exemption. The state fully exempts qualified retirement distributions — including traditional IRA, 401(k), 403(b), 457(b), pension, and Social Security income — from its 4.95% flat individual income tax. For pre-retirees in Illinois, that single rule reshapes the entire retirement planning conversation, especially around Roth conversion timing and the property-versus-income-tax trade-off. This guide breaks down how Illinois taxes retirement income in 2026, where the planning leverage lies, and how to think about Roth conversions, gold IRA rollovers, and estate planning as an Illinois resident.

Illinois Income Tax at a Glance

Illinois imposes a flat 4.95% individual income tax. There are no graduated brackets, and the state constitution requires a single tax rate (a 2020 referendum to allow graduated rates was rejected). Local income taxes do not exist at the municipal level — although some local taxes do apply to other categories (telecommunications, vehicle, hotel). For retirees, the flat rate is largely a moot number because nearly all retirement income is excluded entirely from the calculation.

The Illinois Retirement Income Exclusion (Full Exemption)

Illinois is one of a small group of states that fully exempts qualifying retirement income from state income tax. The exemption applies to: traditional IRA and 401(k) distributions, 403(b) and 457(b) distributions, private pensions, public pensions, Social Security benefits, railroad retirement benefits, and annuity income from qualifying retirement accounts. There is no income cap and no age threshold — the exemption applies regardless of household income or filing status.

This is meaningfully different from age-based exclusions in Georgia or Michigan. Illinois does not require the taxpayer to be 62, 65, or any specific age. A 55-year-old who takes a 72(t) SEPP distribution from a traditional IRA pays zero Illinois state tax on that distribution. A 70-year-old taking a $200,000 traditional 401(k) distribution pays zero Illinois state tax. The exemption is total and unconditional for qualifying retirement income.

What Counts as Qualifying Retirement Income

Illinois Schedule M requires the taxpayer to subtract qualifying retirement income from federal AGI to arrive at Illinois taxable income. The subtraction lines include: federally taxable Social Security, qualified employee benefit plan distributions (IRAs, 401(k)s, 403(b)s, 457(b)s, pensions), government retirement annuities (federal civil service, military retirement), railroad retirement benefits, and qualifying retirement payments from religious orders.

Items that do not qualify and remain taxable in Illinois: wages, self-employment income, interest, dividends (non-qualifying), short-term capital gains, rental income, and royalties. A retiree who earns $20,000 of part-time wage income alongside $100,000 of qualifying retirement distributions will owe Illinois state tax on only the $20,000 of wages.

Social Security in Illinois

Social Security benefits are fully exempt from Illinois income tax through the same Schedule M subtraction mechanism. There is no provisional-income phase-in and no income-based reduction. A retiree with $80,000 of Social Security and $150,000 of IRA distributions owes zero Illinois state tax on either income source.

How Roth Conversions Are Treated

This is the most important and often-misunderstood Illinois retirement tax rule: a Roth conversion is not a distribution from a qualified retirement plan in the traditional sense for federal taxation, but Illinois treats the taxable portion of a Roth conversion as qualifying retirement income subject to the exclusion. Practically, this means an Illinois resident converting $100,000 of traditional IRA to Roth pays federal income tax on the $100,000 but zero Illinois state tax on the converted amount.

The implication for pre-retirees is significant. Illinois residents who plan large Roth conversions in the gap years between retirement and RMD age can compound the federal-only tax savings into a major lifetime advantage. Compare this to California, where a $100,000 Roth conversion adds $9,300+ in state tax on top of the federal bill, or New York, where the same conversion adds $6,500+ in state tax. Illinois residents get a clean federal-only calculation.

Gold IRA Rollovers in Illinois

A direct trustee-to-trustee rollover from a 401(k) or traditional IRA into a self-directed gold IRA is a non-taxable event federally and in Illinois. No distribution occurs, no tax applies. If an indirect rollover misses the 60-day window, the full amount becomes a taxable distribution at the federal level — and at the Illinois level, the distribution still qualifies for the full retirement income exclusion. The Illinois rule is forgiving: even a botched indirect rollover that becomes a taxable distribution still escapes Illinois state tax as long as the dollars came from a qualifying retirement plan.

For pre-retirees who want to add physical assets to their retirement plan, the rollover itself is fully tax-neutral. When the gold IRA is eventually drawn down — in-kind or cash — those distributions remain fully exempt from Illinois state tax.

The Other Half of the Illinois Tax Picture

The retirement income exemption is generous, but Illinois imposes some of the highest property taxes in the country and reinstates a state-level estate tax. The two-sided picture matters for total tax planning, not just income tax.

Property tax: Illinois has an effective property tax rate around 2.07% — second highest in the nation behind New Jersey. Cook, DuPage, Lake, and Kane counties run higher; downstate counties run lower. A $400,000 home in Naperville can carry an annual property tax bill above $8,500. The Senior Citizens Homestead Exemption ($5,000 reduction in equalized assessed value for residents 65+) and the Senior Citizens Assessment Freeze (income-qualified retirees can freeze their assessed value) provide some relief.

Estate tax: Illinois imposes a state-level estate tax with a relatively low $4 million exemption (compared to the federal $13.61 million in 2026). Estates above $4 million face Illinois estate tax at rates up to 16% — a meaningful planning issue for retirees with significant IRA, real estate, or business equity. Unlike federal estate tax, Illinois does not allow portability of the exemption between spouses, so married couples with combined estates above $4 million need credit shelter trusts or other planning structures to use both spouses’ exemptions.

Sales tax: 6.25% state plus up to 4.75% local in Chicago and surrounding counties (total can reach 10.25% in Chicago).

Required Minimum Distributions in Illinois

RMDs from traditional IRAs and 401(k)s begin at age 73 (rising to 75 for those born in 1960 or later under SECURE 2.0). For Illinois retirees, RMDs are fully exempt from state income tax via the qualifying retirement income exclusion. There is no cap and no phase-out — a $200,000 RMD from a large traditional account pays zero Illinois state tax. The federal tax bill is the only state-relevant tax cost for Illinois retirees managing RMDs.

Frequently Asked Questions

Is Social Security taxable in Illinois?

No. Illinois fully exempts Social Security benefits from state income tax for all retirees, regardless of household income.

Does Illinois tax IRA and 401(k) distributions?

No. Qualifying distributions from traditional IRAs, Roth IRAs, 401(k)s, 403(b)s, 457(b)s, and pensions are fully exempt from Illinois state income tax. There is no age requirement and no income cap.

Does Illinois tax Roth conversions?

No. The taxable portion of a Roth conversion is treated as qualifying retirement income and excluded from Illinois taxable income via Schedule M. Federal tax still applies to the conversion.

What is the Illinois flat income tax rate for 2026?

4.95%. Illinois constitutionally requires a single tax rate — graduated brackets are not currently permitted.

Does Illinois have an estate tax?

Yes. Illinois imposes a state-level estate tax with a $4 million exemption per individual. Married couples cannot port unused exemption between spouses without trust planning.

How high are Illinois property taxes?

The state’s effective property tax rate is approximately 2.07% — among the highest in the United States. Cook County and the surrounding collar counties run higher; downstate counties run lower.