Illinois Take-Home Pay Calculator

Calculate your Illinois net pay after federal tax, state tax (4.95%), Social Security, Medicare, 401K contributions, and health insurance.

Built by Abiot Y. Derbie, PhD — Postdoctoral Research Fellow. Quantitative researcher specializing in statistical modeling and data-driven decision systems.

Enter Your Illinois Salary Details

Illinois (IL) uses a flat rate income tax of 4.95% applied to all taxable income regardless of earnings level. Combined with federal tax brackets, FICA, and any local taxes, your effective take-home pay depends on total deductions and filing status.

Data updated April 2026 Sources: IRS Rev. Proc. 2025-32 · IL DoR Booklet IL-700-T (2026) · Public Act 104-0452 (Senior Freeze) · Census ACS 2024 Benchmarks shown · Hit Calculate to personalize

Illinois Take-Home Pay — Decision Support System

Flat 4.95% income tax (constitutional) · Full retirement exemption · 2nd-highest property tax in US · Senior Freeze expanding 2026-2029

Where Your Illinois Paycheck Stands

Benchmarks shown
Calculate to see yours
Percentile vs Illinois households (median: $83,356 — Census ACS 2024)
IL median
$40K$70K$85K$130K$300K+

Illinois has the simplest income tax structure of any major state — a constitutionally-mandated flat 4.95% on all income. No progressive brackets, no AMT, no MHSA surcharge, no city income tax (even in Chicago). But this simplicity masks the state's true tax profile: Illinois has the #2 highest property tax in the US (~1.88-2.08% effective) and the nation's most generous retirement income exemption. Your Illinois tax story depends entirely on where you are in your life stage.

Illinois's Tax Structure — Flat Simplicity, Layered Reality

Unlike California (9 brackets + MHSA + SDI) or New York (10 brackets + recapture + NYC layering), Illinois uses a flat-tax system on wages and most other income:

IL State Rate
4.95%
Flat, all incomes
Personal Exemption
$2,925
2026 (per person)
Chicago Income Tax
$0
No city income tax (vs NYC 3.88%)
Retirement Income
Exempt
Pensions, 401(k), IRA, SS
Property Tax Eff.
~2.08%
#2 nationally (behind NJ)
Cap Gains Treatment
4.95%
Ordinary (no preferential rate)

The important nuance: Illinois has no standard deduction (only the $2,925 personal exemption per filer, + $2,425 per dependent). At higher incomes (single >$250K / MFJ >$500K AGI), you lose the exemption entirely. For a single worker earning $100K, Illinois state tax is approximately $4,500/year ($97,075 taxable × 4.95%). Same income in California: ~$4,638 (similar); in New York: ~$4,638; in Texas/Florida: $0.

★ IL-Exclusive Insight (Structural, Not Found in Any Other State)

Illinois's Constitutional Flat Tax + Pension Crisis — The Future Rate Risk

Illinois's flat 4.95% income tax isn't just a policy choice — it's constitutionally protected. The Illinois Constitution (Article IX, Section 3) requires that income tax be imposed "at a non-graduated rate." Changing to a graduated (bracket) structure requires a constitutional amendment, which needs 60% approval from both legislative chambers followed by a statewide ballot measure passing with majority approval.

In November 2020, Illinois voters rejected the "Fair Tax Amendment" 55%-45%. This would have authorized graduated rates up to 7.99% on incomes over $750K (single) / $1M (MFJ). With the amendment's defeat, the state returned to the flat structure, where any rate change must apply equally to all taxpayers. This creates an unusual political dynamic: a rate hike affects every earner from $30K to $30M the same percentage, making hikes politically costly.

The rate history isn't as stable as it looks

Despite constitutional protection, Illinois's flat rate has moved substantially:

  • 1969-2010: 3.0% (basic)
  • 2011-2014: 5.0% (temporary hike to address pension crisis)
  • 2015-2016: 3.75% (partial rollback)
  • 2017-present: 4.95% (current, enacted over governor veto)

Over 55 years, the rate has moved in 4 significant steps, each tied to the state's pension funding crisis. For long-term residents planning 10-20 year financial horizons, this volatility is a real planning consideration — more than the current 4.95% rate suggests.

The pension funding gap is the single biggest future tax risk

Illinois's five state pension systems (TRS, SERS, SURS, GARS, JRS) have combined unfunded liabilities estimated at $140+ billion — one of the largest state pension gaps in the US. The state's contribution schedule under the 1994 "pension ramp" continues to grow for years to come. Without structural reform (which would likely require a constitutional amendment to modify benefits), pressure for rate increases grows as pension obligations consume a growing share of state revenue.

What this means for you practically:

  • If you're planning to live in Illinois for 20+ years, model a scenario where the state rate increases to 5.5-6% in the 2030s. Even at 6%, IL remains below CA (9.3% marginal most middle-income) or NY (6.85% + NYC 3.88% for Chicago commuter equivalent).
  • If you're a remote worker with IL residency who could relocate, monitor the annual Illinois budget cycle (typically finalized in May-June each year) for rate-change language.
  • If you're approaching retirement, the retirement income exemption is currently codified in 35 ILCS 5/203 and has been politically stable for decades, but the pension crisis creates pressure on every exemption. House Resolution 112 (2024) expressed opposition to future taxation of retirement income — non-binding but symbolically important.

Your Illinois Tax Trajectory Across Life Stages

Illinois is structurally different from every other major state in one specific way: the same person's state tax burden changes dramatically based on life stage. Not marginally — fundamentally. Here's the three-stage view based on how Illinois tax law treats income at each phase:

Life-Stage Tax Trajectory

Benchmark numbers shown (single filer, median IL income). Click Calculate above to personalize.

Age 25-55
Working Years
IL income tax rate4.95%
Approx. IL tax owed$3,900
Property tax est.$5,400/yr
401(k) contribution benefitPre-tax shelter
Peak working income. Full 4.95% on wages + self-employment. Property tax highest in life stage because home is at full EAV. 401(k) max ($23,500) saves ~$1,163 in IL state tax per year.
Age 55-65
Pre-Retirement
IL income tax rate4.95%
Approx. IL tax owed$3,900
401(k) catch-up bonus+$7,500/yr
Senior Freeze at 65$75K AGI
Transition years. Continue 4.95% on wages while max'ing 401(k) catch-up contributions. Approaching Senior Freeze eligibility at 65. Start Roth conversions now to avoid IL's 4.95% on wages and convert to Roth that's tax-free later.
Age 65+
Retirement (the Illinois advantage)
IL income tax rate0%*
Approx. IL tax owed$0
Pension exemptFull
401(k)/IRA exemptFull
Social Security exemptFull
*0% on retirement income only (pensions, 401(k), IRA, SS, military). Wages + investment income (non-retirement) still taxed at 4.95%. Senior Freeze locks property tax EAV for life (income ≤ $75K in 2026, rising to $79K by 2029). This is Illinois's structural advantage — no other Midwestern state offers as generous an exemption.
At retirement (65+) with $75,000/year in retirement income (pensions + 401(k) + Social Security), here's your state income tax burden in each major state:
Illinois Full exemption on all retirement income $0
Texas No state income tax $0
Florida No state income tax $0
California Taxes pension + 401(k) at ordinary rates (9.3%+ on incomes over $72,725) ~$5,100
New York Taxes pension + 401(k) after $20K exclusion; recapture above $107,650 AGI ~$2,900

The life-stage inversion is real. A middle-income Illinois resident aged 35 pays roughly the same total state tax (income + property) as a California resident at the same income. But by age 70, the same person living in Illinois pays $0 state income tax on $75K retirement income while their California counterpart pays $5,100/year — a $5,100/year advantage that compounds over a 25-year retirement to $127,500+ in pre-investment-growth tax savings. Add Senior Freeze for Cook County residents (freezes EAV at age 65 for qualifying incomes), and the math gets more favorable.

The IL Retirement Exemption — The Most Generous in the US

Illinois is one of 13 states that fully exempt all retirement income from state tax, and it's the most generous even among that group. Per 35 ILCS 5/203, the following are fully excluded from Illinois taxable income:

  • Traditional 401(k), 403(b), 457 plan distributions — full amount
  • Traditional IRA and SEP-IRA distributions — full amount
  • Private-sector pensions — full amount
  • Government pensions (federal, state, local) — full amount
  • Military retirement pay — full amount
  • Social Security benefits — full amount (federal still taxes up to 85%)
  • Railroad Retirement Board (Tier 1 + 2) — full amount

Exceptions (these ARE taxable in IL at 4.95%):

  • Non-qualified deferred compensation (top-hat plans, SERPs)
  • Annuity distributions from non-qualified annuities
  • Investment income (capital gains, dividends, interest) in retirement
  • Earned income (part-time wages, consulting income) in retirement

Senior Freeze Expansion (Public Act 104-0452, effective 2026)

Signed December 12, 2025, this law significantly expands the Low-Income Senior Citizens Assessment Freeze Homestead Exemption ("Senior Freeze"):

  • 2025 (payable 2026): Max household income $65,000
  • 2026 (payable 2027): Max household income $75,000
  • 2028 (payable 2029): Max household income $77,000
  • 2029+: Max household income $79,000 (CPI-indexed going forward)

The Senior Freeze locks the equalized assessed value (EAV) of your primary residence at the level the first year you qualify (age 65+ with income below the threshold). Property tax bills can still go up if tax rates rise, but the assessed-value component is frozen. On a $350K home in Cook County appreciating 3%/year, the Senior Freeze saves approximately $400-$800/year by year 5 and $1,500-$2,500/year by year 15 of qualifying. Apply annually with your county assessor — it doesn't auto-renew.

How You Compare — Three Illinois-Specific Dimensions

vs Illinois Median
$83,356 (Census ACS 2024)
vs US Median
$83,730 · IL sits near US
vs Chicago Comfort Line
$92,000 single-adult (MIT)

Illinois's urban/rural income split is meaningful but less extreme than NY or CA. Cook County (Chicago metro) median HH is approximately $85,000; downstate counties like Marion, Johnson, and Pulaski average $55,000-$62,000. The same $100K salary buys materially more in Peoria or Rockford than in Chicago — but Chicago lacks the NYC-style city income tax that would otherwise punish urban earners.

Three 2026 Illinois Changes Most Filers Will Miss

1. Senior Freeze income limit raised to $75,000 (Public Act 104-0452)

As covered above — if you turned 65 in 2025 but had income between $65K and $75K and thought you didn't qualify for Senior Freeze, you now do for 2026. Apply with your county assessor. Cook County applications open March 9, 2026.

2. Grocery sales tax ended statewide (Jan 1, 2026)

The state's 1% grocery sales tax was eliminated effective January 1, 2026. However, individual municipalities and counties can impose their own local 1% grocery tax via ordinance. Whether your Illinois grocery bill actually drops depends on local policy. Chicago and many suburban communities have voted to maintain the local 1% rate; others have not.

3. Illinois Earned Income Credit permanently increased to 20% of federal EITC

Prior to 2026, the IL EIC was 18% of the federal EITC. The 20% rate is now permanent. For a worker with two children and $35K earned income, federal EITC is ~$5,830 and Illinois EIC is now $1,166 (up from $1,050). Refundable — adds to your IL refund check.

Five Illinois Take-Home Mistakes That Quietly Cost Thousands

1. Not claiming the 5% Illinois Property Tax Credit
IL offers a non-refundable credit of 5% of property tax paid on your primary residence against IL state income tax. For a Cook County homeowner paying $8,000 in property tax, that's a $400/year IL tax credit — small but consistent. Line 16 of Form IL-1040. You must have been the homeowner on January 1 of the tax year.
2. Missing the K-12 Education Expense Credit
Parents of K-12 students in Illinois public, private, or home schools can claim 25% of qualified education expenses over $250 per student, up to $750/student in credit. Qualified expenses include tuition, book fees, lab fees, and required supplies. Form IL-Schedule ICR. Often missed by home-school families who don't realize they qualify.
3. Forgetting to claim retirement income subtraction on Form IL-1040
Illinois's retirement income exemption isn't automatic — you must actively subtract pension/401(k)/IRA/SS income on Line 5 of Form IL-1040 to trigger it. The number is already in your federal AGI (Line 1); you subtract it back out on Line 5. Missing this line means paying 4.95% on your entire retirement income. Estimate: $500-$2,500/year in unnecessary IL tax for typical retirees.
4. Applying for Senior Freeze every year — not auto-renewal
Unlike the federal Social Security or regular Senior Citizens Homestead Exemption (which auto-renews), Senior Freeze requires annual reapplication. Cook County sends reminder mailers, but if you miss the deadline (typically July 1), you lose the benefit for that year and your property's EAV resets to current market. For a senior who's held Senior Freeze 10 years, missing one renewal can cost $3,000-$5,000 in subsequent-year property tax.
5. Capital gains at the same 4.95% as wages — no preferential rate
Federal law taxes long-term capital gains at 0%/15%/20% (preferential). Illinois has no preferential rate — all capital gains are taxed at 4.95% as ordinary income. A $50K realized long-term gain in Illinois costs $2,475 in state tax regardless of federal treatment. Tax-loss harvesting is more valuable in IL than the federal preferential rate suggests because it offsets 4.95% IL tax, not just the 15%/20% federal rate.

Your Illinois Take-Home Action Plan

Max your 401(k) — IL's flat rate makes the math simple
2026 limit: $23,500 ($31,000 if 50+). At Illinois's 4.95% flat rate plus your federal marginal (22-24% typical professional salaries), a maxed 401(k) saves approximately $6,355/year in combined federal+IL state tax. IL has no recapture mechanism (unlike NY) and no SDI (unlike CA), so the 401(k) math is clean: every dollar saves 27-29% at most middle-income levels, 32-37% at high-income.
Roth-convert in 60-65 window — before IL exemption matters
Ages 60-65 are the Illinois Roth-conversion sweet spot. You're past 59½ (no early withdrawal penalty) but not yet at Required Minimum Distribution age (73 or 75). Roth conversions during working years are taxed at 4.95% IL — but after age 65 if you've retired, the conversion would be from exempt traditional IRA to exempt Roth IRA (converted amount NOT taxed in IL if you structure it right). Run the numbers carefully with a CPA; IL's treatment of Roth conversions is specific.
Plan for property tax, not just income tax
Illinois's 2.08% effective property tax rate is the defining feature of long-term wealth accumulation here. Before buying a $400K home in Cook, Lake, or DuPage County, budget $8,000-$9,200/year in annual property tax — more than the IL state income tax on a $125K salary. Check county-specific effective rates (Lake County: 2.28%, Cook County: ~2.1%, DuPage: ~2.2%, Pulaski: 0.83%). For retirees, register for Senior Freeze immediately at age 65 if income-qualifying.

Illinois Tax-Optimization Readiness — 5 Questions

1
Have you subtracted your retirement income on Line 5 of Form IL-1040 (if applicable)?
2
If age 65+ with household income under $75K, have you applied for Senior Freeze this year?
3
Are you claiming the 5% IL Property Tax Credit (Line 16) for your primary residence?
4
If you have K-12 students, are you tracking qualified education expenses for the credit?
5
Are you factoring the 20-year constitutional flat tax risk into retirement state-selection?

The Illinois Take-Home Formula

Net Take-Home = Gross Wages
− Federal Income Tax (brackets 10–37%)
− FICA (6.2% SS up to $184,500 + 1.45% Medicare)
− Additional Medicare 0.9% (wages > $200K single / $250K MFJ)
IL State Income Tax (4.95% flat after $2,925 exemption)
$0 Illinois local income tax (even Chicago)
− 401(k) / HSA / health premium deductions

IL's simplicity is an advantage during working years — you always know your state tax rate. But the real Illinois tax story is property tax + the life-stage trajectory. For middle-income working-age residents, IL is roughly tied with CA/NY on total tax burden. For retirees, IL is among the lowest-tax major states in the US.

IL tax trajectory is personal — your life stage changes everything

Senior Freeze expansion, grocery tax changes, pension reform debates, and constitutional amendment proposals can materially shift your Illinois tax math. We'll summarize what matters when.

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People Also Calculated

Methodology: Federal brackets per IRS Rev. Proc. 2025-32. IL flat rate 4.95% per 35 ILCS 5/201 (constitutional flat-tax structure, unchanged 2017-present). Personal exemption $2,925 per filer per IL DoR Booklet IL-700-T (2026). Senior Freeze income limits per Public Act 104-0452 signed December 12, 2025: $75K (2026), $77K (2028), $79K (2029+). Retirement income exemption per 35 ILCS 5/203. FICA: Social Security 6.2% up to $184,500 wage base; Medicare 1.45% all wages; Additional Medicare 0.9% on wages > $200K single / $250K MFJ. Illinois median household income $83,356 per Census ACS 2024. Life-Stage Trajectory approximations assume median state income + median home property tax + standard retirement drawdown; your actual numbers will vary based on specific county, home value, and income composition. This tool is informational only, not tax advice. Constitutional rate-change scenarios are illustrative future-risk modeling and should not be interpreted as predictions.

Take-Home by Income in Illinois

See how your take-home pay varies across major Illinois cities like Chicago, Aurora, Naperville, Joliet, Rockford, Springfield, and Peoria — factoring in IL's flat 4.95% rate, no local income tax (even in Chicago), and the property tax landscape that varies widely by county. Estimates below assume single filer, 2026 federal standard deduction ($16,100), IL personal exemption ($2,925), 6% 401(k), and $250/month health premium. No IL county has a local income tax — the property tax is the wealth-burden layer.

Gross Salary Federal Tax IL State FICA Take-Home % Net By City
$40,000$1,876$1,733$3,060$29,93174.8%
$50,000$2,926$2,228$3,825$37,02174.0%
$60,000$4,071$2,723$4,590$44,01673.4%
$75,000$5,796$3,466$5,738$55,50074.0%Chicago take-home pay
$100,000$10,435$4,703$7,650$70,71270.7%Chicago take-home pay
$125,000$15,935$5,940$9,563$86,06268.9%
$150,000$21,435$7,178$10,453$102,43468.3%
$200,000$32,435$9,653$11,853$128,55964.3%

What This Means For You

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Take-Home Difference
Annual State Tax Savings
Salary by city in Illinois:
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This calculator is for informational and educational purposes only. Results are estimates based on the information you provide and standard financial formulas. This is not financial advice. Consult a qualified financial advisor for decisions specific to your situation. Full Disclaimer

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Illinois Income Tax Overview

Illinois has a flat 4.95% state income tax. No local income taxes in most areas. Combined with federal taxes, Illinois residents typically see 25-35% of gross pay go to taxes depending on income level.

Your total tax burden in Illinois includes: Federal income tax (10-37% progressive brackets), State income tax (4.95%), Social Security (6.2% on first $168,600), and Medicare (1.45% + 0.9% additional above $200K). Use our general Take-Home Pay Calculator to compare with other states.

How Illinois Taxes Your Income

Illinois imposes a flat 4.95% state income tax on earned income. Flat 4.95%. Does not tax retirement income. Your Illinois state tax is calculated as a flat percentage of taxable income — every dollar is taxed at the same 4.95% rate regardless of how much you earn.

Federal Tax Brackets Applied to Your Illinois Salary

Regardless of which state you live in, federal income tax applies the same progressive bracket structure nationwide. For 2024-2025, single filers face these brackets after the $14,600 standard deduction:

Taxable IncomeRateTax on BracketCumulative
$0 – $11,60010%$1,160$1,160
$11,601 – $47,15012%$4,266$5,426
$47,151 – $100,52522%$11,743$17,169
$100,526 – $191,95024%$21,942$39,111
$191,951 – $243,72532%$16,568$55,679
$243,726 – $609,35035%$127,969$183,648
Over $609,35037%

On top of federal tax, FICA deductions (7.65%) apply to all earned income: 6.2% for Social Security (on the first $168,600) and 1.45% for Medicare (no cap). High earners above $200,000 pay an additional 0.9% Medicare surtax. In Illinois, state income tax of 4.95% is layered on top. Combined, your total tax burden in Illinois is the sum of federal income tax, FICA, and Illinois state tax (4.95%) — use the calculator above to see your exact numbers.

Take-Home Pay Examples in Illinois

Here is how different salary levels break down in Illinois after federal income tax, state tax, and FICA deductions (single filer, standard deduction, no 401(k) contribution):

Gross SalaryIL State TaxFederal TaxFICATake-Home
$50,000$2,475$7,500$3,825$36,200
$75,000$3,712$11,250$5,738$54,300
$100,000$4,950$15,000$7,650$72,400
$150,000$7,425$22,500$11,475$108,600

Use the calculator above to see your exact take-home pay based on your specific salary, filing status, 401(k) contribution, and health insurance premiums.

Illinois vs No-Tax States

Nine US states have no income tax: Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming. On a $100,000 salary, a Illinois resident pays approximately $4950 in state income tax that a Texas or Florida resident keeps entirely.

However, states without income tax often have higher sales taxes, property taxes, or both. The total tax burden — income + sales + property — matters more than income tax alone. Illinois may offset some of its income tax with lower costs in other areas. Use the comparison dropdown above to see exactly how Illinois compares to any other state at your salary level.

Retirement and Social Security in Illinois

Illinois does not tax Social Security benefits. The state does not tax most retirement income. Military retirement pay may be partially or fully exempt — check current state rules. If you are planning for retirement in Illinois, these exemptions can save retirees thousands per year compared to states that fully tax all retirement income.

For comprehensive retirement planning with Illinois taxes factored in, use our Retirement Calculator to project your savings trajectory and determine if you are on track for your target retirement age.

Maximizing Your Take-Home in Illinois

Pre-tax contributions: Every dollar you contribute to a 401(k) or traditional IRA reduces your taxable income in both federal and Illinois state calculations. On a $100,000 salary, contributing 10% ($10,000) to your 401(k) saves approximately $2695/year in combined federal and state taxes while building your retirement.

HSA contributions: If you have a high-deductible health plan, Health Savings Account contributions are triple tax-advantaged — tax-deductible, grow tax-free, and withdraw tax-free for medical expenses. The 2024 limit is $4,150 for individuals and $8,300 for families.

Filing status optimization: Married couples should compare "Married Filing Jointly" vs "Married Filing Separately" — in most cases, filing jointly results in lower total tax, but there are exceptions, particularly when one spouse has significant student loan payments on an income-driven plan.

State-specific deductions: Illinois offers deductions that may differ from federal. Check for state-specific credits including property tax credits, education credits, and earned income supplements that can reduce your state tax liability beyond the standard deduction.

Understanding Your Effective vs Marginal Tax Rate

Many workers confuse their marginal tax rate with their effective (average) tax rate, leading to costly financial decisions. Your marginal rate is the percentage applied to your next dollar of income — it determines whether a raise, bonus, or side income is "worth it." Your effective rate is the total tax paid divided by total income — it shows your actual overall tax burden.

For example, on a $100,000 salary in Illinois, your federal marginal rate is 22% (for single filers), but your effective federal rate is closer to 13-15% because the first $14,600 is covered by the standard deduction and lower brackets apply to the first $47,150. Your Illinois state tax adds 4.95% on top, bringing your combined marginal rate to 26.9%.

This distinction matters when deciding whether to take overtime, a second job, or a freelance project. A $10,000 bonus is not taxed at your full effective rate — it is taxed at your marginal rate. In Illinois, a $10,000 bonus on top of a $100,000 salary loses approximately $2,695 to taxes, not the $1,795 that the effective rate might suggest.

How 401(k) Contributions Reduce Your Illinois Taxes

Pre-tax 401(k) contributions are one of the most powerful tools for reducing your tax bill in Illinois. Every dollar contributed to a traditional 401(k) reduces your taxable income for both federal and Illinois state tax purposes.

On a $100,000 salary, contributing 10% ($10,000) to your 401(k) saves you approximately:

Federal tax saved: $2,200 (at 22% marginal rate)
Illinois state tax saved: $495 (at 4.95% state rate)
Total annual tax savings: $2,695
20-year growth (at 7%): $409,955 in retirement savings

The 2024 401(k) contribution limit is $23,000 ($30,500 if age 50+). If your employer offers a match, contribute at least enough to capture the full match before considering any other investment — it is an immediate 50-100% return on your money.

Common Tax Mistakes in Illinois

Not adjusting withholding after major life changes. Marriage, divorce, having a child, or buying a home all change your tax situation. If your W-4 withholding is wrong, you either overpay (giving the government an interest-free loan) or underpay (owing money plus penalties at tax time). Review your withholding after every major life event using our calculator above.

Ignoring the SALT deduction cap. The $10,000 SALT deduction cap limits how much state and local tax you can deduct on your federal return. If your Illinois state tax plus property tax exceeds $10,000, you cannot deduct the excess. This effectively increases your total tax burden beyond what the state rate alone suggests.

Missing state-specific credits and deductions. Illinois may offer tax credits for childcare, education, renewable energy, and low-income earners that many filers overlook. These credits directly reduce your tax bill — not just your taxable income. Check the Illinois Department of Revenue website for current credits.

Not considering total compensation when evaluating job offers. A $95,000 salary with a 6% 401(k) match and fully-paid health insurance can be worth $115,000+ in total compensation. Before accepting or rejecting an offer based on base salary alone, calculate the value of employer match ($5,700), health insurance premium ($6,000-15,000), and other benefits. The calculator above lets you factor in 401(k) and health insurance to see the true take-home impact.

Overlooking the cost of state tax over a career. At 4.95%, a Illinois worker earning $100,000/year pays $4950 in state income tax annually. Over a 30-year career, that is $148500 in state taxes alone. If invested at 7% instead, that money would grow to approximately $467581. This is the real cost of living in a state with income tax.

Cost of Living vs Tax Burden in Illinois

Illinois's cost of living index is 93 (national average = 100), meaning everyday expenses are approximately 7% below average. Combined with a 4.95% income tax rate, here is how the total financial picture looks:

Illinois's 4.95% income tax is offset by a cost of living 7% below the national average. The combination means your effective purchasing power may be higher than in a no-tax state with expensive housing. Total financial picture — not just the tax rate — determines whether a state is truly affordable.

A useful framework: calculate your savings capacity in each location. Take your salary, subtract all taxes (federal + state + FICA), subtract estimated living costs (housing, food, transport, insurance), and the remainder is what builds your wealth. A higher salary in a high-tax, high-cost state often leaves less savings capacity than a moderate salary in Illinois. Use our salary-by-city comparison tool to see exactly how your income plays out in specific cities within Illinois.

Planning a Move to or from Illinois?

Whether you are moving to Illinois or considering leaving, understanding the tax implications is critical for making a financially sound decision.

Moving to Illinois: At 4.95% state income tax, your paycheck will be smaller than in a no-tax state. On a $100,000 salary, you will pay approximately $4,950/year in state income tax. However, if you are moving from a higher-tax state (California at 13.3%, New York at 10.9%, Oregon at 9.9%), you may actually see a tax decrease. Use the comparison widget above to see the exact difference at your salary.

Leaving Illinois: Moving to a no-tax state (Texas, Florida, Tennessee, Washington, Nevada) would save you the full $4,950/year on a $100,000 salary. Over 20 years, that $4,950/year invested at 7% becomes approximately $202,928. This is the true long-term cost of Illinois's income tax.

Border state comparisons: Illinois's neighbors include Indiana (3.05%), Iowa (3.8%), Kentucky (4.0%), Missouri (4.8%). Rates are broadly similar, so a move to a neighboring state may not produce dramatic tax savings. Use the comparison dropdown to run specific scenarios.

We have detailed salary breakdown pages for cities in Illinois: Chicago. Each page shows take-home pay, purchasing power, rent affordability, and side-by-side comparisons with 49 other US cities at 5 different salary levels.

Partial-year tax rules: If you move mid-year, Illinois typically taxes you on income earned while you were a resident. Some states have specific rules about part-year residency, particularly around stock option exercises, bonuses, and deferred compensation. Consult a tax professional for moves involving significant non-salary income.

Remote work considerations: If you work remotely for an employer in a different state, tax rules can be complex. Some states have ""convenience of the employer" rules that may tax you based on where your employer is located, not where you live. Illinois does not currently apply such rules, but tax laws change — verify with a qualified professional.

Key Tax Indicators for Illinois

IndicatorDetails
State Income Tax Rate4.95% (flat)
Tax on $100K salary$4,950/year
Social Security TaxationNot taxed
Retirement IncomeNot taxed
Local Income TaxesNo local income taxes
Tax TypeFlat — all income taxed at same rate

Illinois Tax Changes for 2025-2026

Illinois' flat rate of 4.95% remains unchanged. A graduated tax amendment was rejected by voters in 2020.

Federal changes affecting Illinois residents: The 2017 Tax Cuts and Jobs Act provisions are set to expire after 2025 unless extended by Congress. This could mean higher federal rates, lower standard deductions, and restored personal exemptions starting in 2026. The $10,000 SALT deduction cap is also subject to potential changes. These federal shifts would affect every Illinois resident regardless of state tax policy.

Tax laws change frequently. While the calculator above uses current rates, always verify with a qualified tax professional or the IRS for your specific filing situation. Use our Complete Tax Planning Guide for broader strategies.

Illinois Tax Filing Tips

Illinois residents typically file both a federal return and a Illinois state return. Here are strategies to optimize both:

File state and federal together: Most tax software handles both returns simultaneously, ensuring consistency and catching deductions that apply to both. Illinois's state return generally starts with your federal adjusted gross income, so accuracy on the federal return flows through.

Check state-specific credits: Illinois may offer credits not available federally, including property tax credits, renter credits, earned income supplements, and education incentives. Check the Illinois Department of Revenue website for current credits and eligibility — many filers miss state-specific savings worth $200-2,000.

Time your deductions: If you are close to the standard deduction threshold, consider "bunching" deductions — prepaying property taxes, doubling charitable contributions in one year, or timing medical procedures to exceed the 7.5% AGI threshold. This can make itemizing worthwhile in alternating years.

File electronically for faster refunds: Both federal and Illinois state returns can be e-filed for faster processing. Direct deposit typically produces refunds in 10-21 days. Use an IRS-authorized e-file provider for accuracy guarantees.

People Also Ask

What is the state income tax rate in Illinois?
Illinois has a state income tax rate of 4.95%. This is applied to your taxable income after standard deductions.
How much take-home pay on $75,000 salary in Illinois?
On $75,000 in Illinois, expect approximately $54,000-$58,500 annual take-home, depending on deductions. The calculator above gives your exact figure.
Is Illinois a good state for take-home pay?
Illinois has a moderate-to-high state tax burden. Consider cost of living alongside tax rates when evaluating overall financial impact.
Can I deduct Illinois state tax on my federal return?
Yes, but with limits. The SALT deduction (State and Local Tax) allows you to deduct up to $10,000 of state and local taxes on your federal return if you itemize. On $4,950 of Illinois state tax, you can deduct the full amount if it is under $10,000, saving you 1089-$1,188 in federal tax depending on your bracket.
Is Illinois a good state to live in for taxes?
Illinois has a moderate income tax burden at 4.95%. This is moderate compared to other states, offering a balance between tax burden and public services. The state does not tax Social Security, which benefits retirees.

Illinois (IL) Tax Details

DetailIllinois
Tax structureFlat tax
Top marginal rate4.95%
BracketsFlat 4.95% on all taxable income
Standard deductionFederal standard deduction
Local income taxesNo state, but Cook County has local
Social Security taxed?No
Tax burden rank (1=lowest)#29 of 51
Cost of living (US avg = 100)93% of national average

Illinois has a flat 4.95% income tax with no local income tax (though Cook County has other local taxes). The state does not tax retirement income including Social Security, pensions, and 401(k)/IRA distributions — making it surprisingly tax-friendly for retirees despite the moderate income tax rate.

Take-Home Pay Examples in Illinois

Here is what you take home at common salary levels in Illinois (single filer, standard deduction, no local tax, 2026 estimates):

Gross salaryFederal taxFICAState taxAnnual take-home
$50,000$4,238$3,825~$1,800~$40,137
$75,000$9,738$5,738~$3,200~$56,325
$100,000$14,738$7,650~$4,800~$72,812

Local Income Taxes in Illinois

No state, but Cook County has local. Local taxes can significantly affect your take-home pay — in some cases adding 1-3% on top of the state rate. Be sure to include your city or county in the calculator above for the most accurate result.

How Illinois Compares to No-Tax States

Nine states have no income tax: Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming. On a $75,000 salary, moving to a no-income-tax state would save approximately $2,000-$4,500 annually in state taxes. However, those states often have higher property taxes or sales taxes to compensate, and cost of living differences can outweigh tax savings. Use our general take-home pay calculator to compare states side by side.

Additional Resources

Use these calculators for a complete financial picture in Illinois:

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