Illinois

Overview

Illinois is the clearest example of a state that most national retirement rankings get wrong, or at least underweight. It has a flat 4.95% state income tax on wages, but it fully exempts nearly all retirement income, Social Security, public and private pension income, and every dollar withdrawn from a traditional IRA, 401(k), 403(b), or 457(b). For a retiree living entirely on retirement income, Illinois functions as a genuine zero-tax state, a fact multiple 2026 tax-planning sources specifically describe as "underappreciated" and "often overlooked in relocation conversations," since most people assume only the nine no-income-tax states can offer this.

The honest counterweight is real: Illinois carries some of the highest property taxes in the entire country (a median effective rate around 1.9-2.1%, the highest or second-highest nationally depending on the source and year), plus a combined state-and-local sales tax that can exceed 10% in Chicago and Cook County, and a state-level estate tax with a relatively low $4 million exemption (no portability between spouses). This is a state that rewards retirees who structure their income around its exemptions and pay close attention to where, specifically, they buy property, rather than a blanket low-tax destination.

Chicago anchors the state's cultural and healthcare infrastructure, with world-class hospitals, museums, and an international airport hub. Naperville, in Chicago's western suburbs, was ranked #1 in the state for retirement by US News for its combination of walkability, healthcare access, and maintenance-free housing options. Beyond the Chicago metro, Springfield, Peoria, Rockford, and Carbondale offer dramatically lower housing costs, in some cases 40-75% below the state average, for retirees prioritizing affordability over big-city amenities.

Why Retire Here

Illinois's core pitch is genuinely simple: complete exemption of retirement income from state tax, paired with access to some of the best healthcare in the Midwest and a cultural depth few other states in this database can match. Northwestern Memorial Hospital, Rush University Medical Center, and the University of Chicago Medical Center are all consistently ranked among the nation's top hospitals, several with senior-focused units and specialized programs, the University of Chicago Medicine runs a Successful Aging & Frailty Evaluation Clinic, and UI Health offers a dedicated Memory & Aging Clinic for Alzheimer's and dementia care.

Beyond Chicago proper, Illinois offers genuine lifestyle range: the energy and cultural depth of a major city (the Art Institute of Chicago alone holds more than 300,000 works), maintenance-free suburban living in places like Naperville, or small-town charm in Galena and Geneva. The state is roughly 5% below the national average cost of living overall, with groceries, electricity, and healthcare all running below national norms, even though housing-adjacent costs (property tax specifically) run meaningfully higher.

The honest tradeoff, stated plainly rather than softened: Illinois's fiscal picture has been a long-running source of concern (a past tax increase was implemented to address a significant state budget shortfall, and property taxes are the direct, ongoing consequence of that structural pressure). Retirees drawn here for the retirement-income exemption should model total tax burden, income tax, property tax, and sales tax together, not just the headline exemption, before deciding where specifically to buy.

Cost of Living

Illinois runs close to the national average overall, roughly 5% below by some measures, but with real regional variation between Chicago, its suburbs, and the rest of the state.

Chicago and Suburbs

Chicago itself carries city-level pricing, with condo ownership adding HOA fees on top of already-elevated purchase prices; DuPage and Lake Counties (the western and northern suburbs, including Naperville) run above the state average on housing specifically. Naperville, ranked the state's top retirement destination by US News, combines a walkable downtown with nationally-ranked healthcare (Endeavor Health Edward Hospital) and cultural amenities, at a real premium over smaller Illinois cities.

Springfield, Peoria, Rockford, and Carbondale

These cities offer dramatically lower housing costs: Peoria runs roughly 74.5% below the state housing average, Carbondale nearly 71% below, and Rockford and Springfield both run more than 40% below. The statewide median home price sits around $255,000-$285,000 depending on the source and year, well below many coastal and Sun Belt markets, though this masks the wide gap between Chicago-adjacent pricing and downstate affordability.

What Drives the Cost

Property tax is the dominant, unavoidable variable in Illinois, discussed in detail below, and it applies regardless of which city or town a retiree chooses, since it's a statewide structural issue rather than a Chicago-specific one. Groceries and prescription drugs are taxed at just 1%, a genuine, meaningful break for retirees on a fixed budget, even as the base sales tax (6.25% state, plus local additions that can push Chicago-area totals above 10%) runs high on other purchases.

Healthcare

Illinois has one of the strongest healthcare ecosystems in the Midwest, anchored by Chicago's academic medical centers but with real strength in the suburbs and select downstate cities as well.

Northwestern Memorial Hospital is consistently ranked among the top hospitals in the nation; Rush University Medical Center and the University of Chicago Medical Center both rank highly as well, with several offering senior-focused geriatric units and specialized programs specifically for aging-related conditions. In the suburbs, Naperville's Endeavor Health Edward Hospital provides nationally-ranked care without requiring a trip into the city. Downstate, healthcare access naturally narrows outside the major population centers, a genuine factor for retirees considering Peoria, Carbondale, or more rural parts of the state, where specialist access should be verified directly before committing to a location.

Tax Considerations

This is Illinois's defining feature for this site's audience, and it deserves the detailed treatment that follows, since the state genuinely "splits down the middle": exceptional retirement-income treatment paired with some of the least favorable property and estate tax exposure in the country.

The Retirement Income Exemption

Illinois's 4.95% flat income tax applies to wages and most other income, but Social Security benefits, all public and private pension income, and all withdrawals from traditional IRAs, 401(k)s, 403(b)s, and 457(b)s are fully subtracted from taxable income, meaning they are not taxed at the state level at all. Required Minimum Distributions, which begin at age 73 (rising to 75 for those born in 1960 or later under SECURE 2.0), are fully exempt under this same exclusion. Illinois does not tax military retirement benefits either. This is a complete exemption, not a partial deduction or income-capped exclusion the way some other states structure their retirement-income relief, a genuinely stronger benefit than most of the partial-exemption states covered elsewhere in this guide.

What Isn't Exempt

Investment income and capital gains outside of retirement accounts are taxed as ordinary income at the flat 4.95% rate; this is a real distinction for retirees with significant taxable brokerage holdings, since Illinois's generous exemption applies specifically to retirement-account and pension-type income, not to all investment income broadly.

Property Tax: The Real Cost

Illinois's median effective property tax rate runs around 1.9-2.1%, among the highest, and by some measures the single highest, in the nation. On a median-value home, this translates to roughly $5,000-$5,400 in annual property tax, with some suburban Chicago counties running meaningfully higher still (Lake County around 2.43%, DeKalb County around 2.30%). This is the single most important number for any retiree evaluating Illinois, since it can offset a meaningful share of the retirement-income tax savings, particularly for homeowners with more expensive properties. Illinois does offer property tax relief: the General Homestead Exemption reduces assessed value by up to $6,000 statewide ($10,000 in Cook County, $8,000 in counties bordering Cook County), and the Low-Income Senior Citizens Assessment Freeze Homestead Exemption freezes a qualifying senior's assessed value in place, with income limits rising from $65,000 in 2025 toward $79,000 by 2028 and beyond.

Estate Tax

Illinois imposes its own state-level estate tax with a $4 million exemption, meaningfully lower than the federal exemption ($13.99 million for 2025, rising further under OBBBA for 2026), and estates above that threshold face rates up to 16%. Unlike the federal estate tax, Illinois does not allow portability of the exemption between spouses, meaning married couples with combined estates above $4 million need credit shelter trusts or similar planning structures to use both spouses' exemptions fully. This is a genuinely important estate-planning consideration for higher-net-worth retirees that doesn't apply in most of this guide's no-estate-tax states.

Sales Tax

The base state sales tax is 6.25%, with local additions (particularly in Chicago and Cook County) pushing the combined rate above 10% in some areas, among the higher combined rates in the country. Groceries and prescription medications are taxed at a reduced 1% rate, a meaningful, specific offset for retirees' recurring budget items.

Housing

Illinois housing costs vary dramatically by region, from Chicago-suburb premiums to some of the most affordable mid-sized cities in the Midwest.

The statewide median home price runs roughly $255,000-$285,000. Naperville and other western/northern Chicago suburbs (DuPage, Lake County) command a real premium for their combination of walkability, schools, and healthcare access. Downstate cities offer dramatically better value: Peoria (roughly 74.5% below the state average), Carbondale (nearly 71% below), and Rockford and Springfield (both more than 40% below) give retirees genuine, well-documented affordable alternatives without leaving the state.

Condo ownership in Chicago carries an additional, ongoing cost worth factoring in explicitly: monthly HOA fees covering building insurance, common-area upkeep, and staff services, a real, recurring line item beyond the base purchase price or property tax bill. Illinois also has a large stock of older homes, particularly in and around Chicago, which can mean higher ongoing maintenance costs (roof, furnace, plumbing) than a newer Sun Belt build.

Transportation

Chicago and its immediate suburbs offer genuine public transit access (CTA trains and buses, plus Metra commuter rail), which can meaningfully reduce reliance on a car for retirees living in the city or close-in suburbs, an advantage most of this guide's other Midwest and Sun Belt profiles don't share to the same degree. Outside the Chicago metro, a car is effectively necessary for daily life.

O'Hare International Airport is one of the busiest and most internationally connected airports in the country, a genuine advantage for retirees who want to stay close to family or travel frequently, whether domestically or internationally.

Climate

Illinois has a true four-season continental climate. Summers run warm, generally 75-85F, with real humidity; winters are cold and snowy, particularly in Chicago and the northern part of the state, with genuine lake-effect snow near Lake Michigan. Fall offers a real, if less nationally famous than Michigan's, color season, and spring is variable, with winter conditions sometimes persisting into April in the northern part of the state.

This is a genuine four-season commitment, not a mild, year-round climate, and retirees drawn to Illinois specifically for its tax treatment should weigh the winter reality honestly rather than treating it as a minor footnote.

Safety

Illinois ranks well for senior safety by some measures (eighth safest state for seniors per one widely cited ranking), though, as with any state containing a major metro area, safety varies significantly by specific city and neighborhood. Chicago proper has real, documented crime concerns in certain neighborhoods, while many suburban communities (including Naperville) and smaller downstate cities report low crime and strong community safety. The Illinois Department on Aging runs specific programs promoting senior safety and quality of life. As with every profile in this guide, retirees should research the specific city or neighborhood they're considering directly rather than judging the entire state by its largest city's reputation in either direction.

Pros

Complete exemption of Social Security, pension, and 401(k)/IRA income from Illinois's 4.95% flat state income tax
World-class healthcare concentrated in Chicago (Northwestern Memorial, Rush, University of Chicago Medicine) with strong suburban options in Naperville and elsewhere
O'Hare International Airport offers exceptional domestic and international connectivity
Genuine public transit access in Chicago and close-in suburbs, reducing car dependency for some retirees
Reduced 1% sales tax on groceries and prescription medications
Real lifestyle range: major-city culture, walkable suburbs, small-town charm, and affordable downstate cities all within one state
No tax on military retirement benefits
Naperville ranked the #1 retirement destination in the state by US News for 2025-2026

Cons

Among the highest property tax rates in the nation (median effective rate ~1.9-2.1%), which can meaningfully offset retirement-income tax savings
State-level estate tax with a low $4 million exemption and no spousal portability, a genuine planning issue for higher-net-worth retirees
Combined state-and-local sales tax can exceed 10% in Chicago and Cook County
Investment income and capital gains outside retirement accounts are still taxed at the full 4.95% rate
Genuine four-season climate with cold, snowy winters, not a mild year-round destination
Illinois's broader fiscal picture (past tax increases tied to budget shortfalls) is a background factor worth being aware of
Car generally necessary outside the Chicago metro's transit-served areas
Older housing stock, particularly around Chicago, can mean higher ongoing maintenance costs

Best For

Illinois is best for retirees whose income comes primarily from Social Security, pensions, and traditional retirement accounts, since that's exactly the income Illinois exempts completely, and who specifically value world-class healthcare access and genuine big-city cultural depth over the lowest possible total tax burden. It's a particularly strong fit for retirees who want to remain near family or community ties in the Midwest, or who specifically want O'Hare's international connectivity for frequent travel.

It's also a reasonable fit for retirees prioritizing affordability who are willing to look beyond the Chicago metro entirely, Peoria, Rockford, Springfield, and Carbondale all offer genuinely low housing costs alongside the same statewide retirement-income exemption.

Not the Best Fit For:

Retirees whose income comes primarily from taxable investment accounts and capital gains rather than retirement accounts, since Illinois's signature exemption doesn't apply to that income type
Higher-net-worth retirees with combined estates above $4 million who haven't done spousal-portability estate planning
Anyone specifically prioritizing the lowest possible property tax burden
Retirees who want a mild, year-round climate rather than a genuine four-season commitment

Sources

Illinois Department of Revenue, 35 ILCS 5/203 (retirement income exclusion)
SmartAsset — Illinois Retirement Tax Friendliness
AARP — Illinois State Taxes Guide (2026)
Edelman Financial Engines — Cost of Living in Illinois for Retirees
Retirement Savings Planner — Illinois Retirement Tax Guide 2026
Naperville.com — Best Cities to Retire in Illinois (2026)
AmeriFreight — Is Illinois a Good Place to Retire?

Remote Work & U.S. Home Base Strategy

Illinois's retirement-income exemption is specifically retirement-focused and does not extend to active wages, self-employment income, or investment income outside retirement accounts.

Remote work tax treatment: W-2 and 1099 income is taxed at Illinois's standard 4.95% flat rate; the retirement-income exemption described above applies specifically to Social Security, pension, and qualified retirement account distributions, not to active earnings of any kind.
Digital nomad / remote-work hubs: Chicago has a genuine, sizable tech and remote-work community, with coworking spaces throughout the Loop and River North; Naperville and other western suburbs offer a quieter, more affordable alternative with strong connectivity back into the city.
Domicile strategy: Illinois's high property tax burden and estate tax exposure make it a meaningfully higher-friction domicile choice than this guide's no-income-tax states for anyone optimizing purely for tax minimization; it's a stronger fit for someone choosing Illinois for healthcare, family, or lifestyle reasons who happens to also benefit from the retirement-income exemption, rather than a pure tax-arbitrage play.
Home base for travelers: O'Hare International Airport is one of the most internationally connected hubs in the country, making Illinois a genuinely strong home base for retirees or remote workers who travel frequently, whether domestically or abroad.