Updated June 2026 · Flat 4.95% State Tax · Chicago $16.20/hr Min Wage · No Local Income Tax
Illinois Paycheck Calculator 2026 — Flat 4.95% State Tax · Free IL Tool
Free Illinois paycheck calculator 2026. Enter your pay and instantly see your take-home after IL flat 4.95% tax, federal tax & FICA.
IL state tax: Flat 4.95%
No local income tax
Min wage: $15.00/hr (Chicago $16.20/hr)
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Your Illinois Take-Home Pay (estimated)
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Gross Pay
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Total Taxes
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Effective Rate
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Full Paycheck Breakdown
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Gross Pay
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— Federal Income Tax
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— Illinois State Tax (4.95%)
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— Social Security (6.2%)
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— Medicare (1.45%)
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— Pre-tax Deductions
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— Post-tax Deductions
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Net Take-Home Pay
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Disclaimer: Estimates only. Actual withholding may vary based on W-4, exemptions, and payroll software. Consult a tax professional.
Note: If your actual paycheck is lower than this estimate, check Chicago-specific minimum wage rates, overtime, or deduction differences against our pay stub guide.
✓ Reviewed for AccuracyReviewed by Jordan Ellis — Senior Payroll & Tax Analyst · Last reviewed: June 2026
Illinois's flat 4.95% state income tax rate applies to all taxable income equally — no bracket complications. Combined with no local income taxes anywhere in the state, Illinois paycheck calculations are among the most straightforward for a large state. Enter your details for an instant estimate.
Section 2
Illinois Income Tax Rate 2026 — The Flat Tax State
Illinois is one of eight states with a flat income tax rate — meaning every Illinois worker pays the same percentage regardless of income level. Illinois's constitution (Article IX, Section 3) explicitly requires this flat structure, mandating a "uniform rate" on income. In 2020, Illinois voters rejected Amendment 1 — which would have allowed progressive taxation — by 55% to 45%. Illinois has used a flat income tax since 1969; the current 4.95% rate was set in 2017 (up from 3.75%).
Illinois's 4.95% rate sits between the two other flat-tax states we cover: Utah's 4.45% and Idaho's 5.3%. In every flat-tax state, withholding is calculated the same simple way — one rate on every dollar, no bracket math. Workers relocating from Illinois to a zero-tax state should see how take-home pay changes on the Tennessee paycheck calculator, which eliminates the state tax line entirely.
4.95%
Illinois Flat State Income Tax Rate (2026)Constitutionally mandated · No income brackets · Same rate on every dollar earned · In effect since January 1, 2017 · Personal exemption: $2,925 per exemption
Illinois Personal Exemption (2026): $2,925 per person. Each exemption claimed on Form IL-W-4 reduces your Illinois taxable net income by $2,925 annually ($112.50 per bi-weekly period, $121.88 per semi-monthly). For a single worker with 1 exemption: $2,925 × 4.95% = $145 annual IL tax reduction. Married with 2 exemptions: $5,850 × 4.95% = $290 annual reduction. Additional exemptions available for age 65+, blindness, and qualifying dependents. Unlike many states, Illinois has no standard deduction — only this personal exemption system applies to reduce taxable income.
Illinois Does NOT Tax Retirement Income: One of Illinois's most significant tax advantages. Illinois exempts from state income tax: Social Security benefits, all pension income (public and private), 401(k) and IRA distributions, Roth conversions, and military retirement pay. This exemption is constitutionally protected under Article 9 of the Illinois Constitution — making it effectively permanent without a voter-approved amendment. Illinois is consistently ranked among the best states for retirees from a state income tax perspective.
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Illinois Form IL-W-4 Explained
Illinois employees complete Form IL-W-4 (Employee's Illinois Withholding Allowance Certificate) alongside the federal W-4. On IL-W-4, you claim personal exemptions (Line 1 — typically 1 for single, 2 for married), additional allowances for age 65+ or blindness (Line 2), and dependent exemptions (Line 3). Each allowance is worth $2,925/year in reduced IL taxable income. Review and update your IL-W-4 after marriage, divorce, birth of child, or any significant income change to avoid year-end surprises.
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No Local Income Tax — Anywhere in Illinois
Illinois law prohibits local income taxes on wages for all cities and counties, including Chicago, Cook County, DuPage, Lake, Will, and Kane counties. This sets Illinois apart from neighboring states: Indiana has county income taxes in virtually every county (0.5%–2.9%); Maryland has county income taxes in all counties (2.25%–3.2%); Missouri allows St. Louis and Kansas City to levy local income taxes. An Illinois worker earning $80,000 in Chicago pays no city income tax — a significant advantage over comparable Midwestern metro workers.
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Illinois vs. Neighboring States — Tax Burden
Illinois's 4.95% flat rate is moderate among Midwestern states. Wisconsin's top rate reaches 7.65%. Minnesota tops out at 9.85%. Indiana's flat rate is 3.05% — but add typical county taxes (avg ~1.5%) and the gap narrows. Iowa recently moved to a flat 3.8% (2025). Michigan is flat at 4.25%. Illinois's rate, combined with no local income tax, makes it one of the simpler and moderately-taxed states for wage earners specifically — though property taxes (avg 2.07% — among the highest nationally) affect overall burden.
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Illinois Earned Income Credit (EITC)
Illinois offers an Earned Income Credit equal to 20% of the federal EITC — one of the more generous state add-ons in the country. Low-to-moderate income workers who qualify for the federal EITC automatically qualify for the Illinois EITC. The IL EITC is claimed on your annual IL-1040 state return and reduces your overall Illinois income tax liability. For a family of three qualifying for the maximum federal EITC (~$7,830 in 2026), the Illinois add-on credit can be up to $1,566 — claimed at tax filing, not from paycheck withholding.
Illinois State Income Tax Structure (2026)
Rate
Applies To
Personal Exemption
Local Tax?
4.95% flat
All taxable income, all filers
$2,925 per exemption (2026)
No — none in Illinois
Illinois personal exemption allowance (2026): Illinois allows a personal exemption allowance of $2,925 per exemption (2026). For withholding purposes, single workers typically claim 1 exemption ($2,925), married workers claim 2 ($5,850). This reduces your Illinois taxable income before the 4.95% rate is applied. At 4.95%, each $2,925 exemption saves $145 in annual Illinois state tax. Additional exemptions for dependents further reduce withholding. Unlike many states, Illinois has no standard deduction — only the personal exemption system applies.
Illinois vs. Neighboring States — Flat Tax Comparison
State
Income Tax Structure
Rate / Top Rate
Local Income Tax?
Illinois
Flat rate
4.95%
No
Indiana
Flat rate + county
3.05% + county 0.5%–2.9%
Yes (counties)
Wisconsin
Progressive
Up to 7.65%
No
Iowa
Flat (recent reform)
3.8% (2025)
No
Missouri
Progressive
4.8%
Yes (KC, St. Louis)
Kentucky
Flat + local
4% + local
Yes (many cities)
Important for Illinois retirement income: Illinois does not tax retirement income from Social Security, pensions from qualified retirement systems (government pensions), IRA/401(k) distributions, or annuities. This makes Illinois's effective tax burden for retirees significantly lower than its 4.95% flat rate implies — and is why many Illinois retirees find staying in Illinois tax-advantageous compared to neighboring states that do tax retirement income.
Section 3
How Illinois Paycheck Tax Is Calculated
Illinois's flat tax structure makes state withholding calculation more transparent than most states. Here is exactly how each Illinois paycheck is computed, from gross pay to the net figure on your pay stub.
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Compute Gross Pay
Hourly: rate × hours in period. Salaried: annual ÷ periods. Illinois follows federal FLSA overtime (1.5× after 40 hrs/week). Illinois statewide minimum wage is $15.00/hour as of January 1, 2025. Chicago has a higher minimum: $16.20/hour (as of July 2024 with annual CPI increases). Cook County's minimum wage may differ — check current rates. Tipped workers in Illinois must receive 60% of the applicable minimum wage as the cash wage, with tips expected to bring total compensation to the full minimum. If they don't, the employer pays the difference.
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Subtract Pre-Tax Deductions
401(k), health insurance, HSA, and FSA contributions reduce your gross wages before all tax calculations. Since Illinois uses federal AGI as its taxable income base, pre-tax deductions reduce both federal and Illinois state taxable income. At Illinois's flat 4.95% rate, each $1,000 in pre-tax deductions saves exactly $49.50 in Illinois state tax — predictable and easy to plan for, unlike progressive bracket systems where the savings depends on which bracket you're in.
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Federal Income Tax Withholding
Using IRS Publication 15-T 2026 tables based on W-4 elections. Chicago-area workers in finance, technology, healthcare, and legal sectors frequently earn $75,000–$200,000+, placing them in the 22%–32% federal brackets. Federal standard deduction: $15,000 (single) / $30,000 (MFJ) for 2026.
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FICA — Social Security & Medicare
Social Security: 6.2% up to $184,500 wage base. Medicare: 1.45% on all wages. Additional 0.9% Medicare surtax on wages over $200,000. Illinois has no state-specific FICA modifications.
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Illinois State Income Tax — Simple Flat Rate Calculation
Your employer uses the Illinois Withholding Tax Tables (IL-700-T) published by the Illinois Department of Revenue. The calculation: annualize per-paycheck wages, subtract Illinois personal exemption allowances ($2,925 per exemption — 2026), multiply by 4.95%, divide by pay periods. Because it's flat, there is no bracket calculation required — every dollar of Illinois taxable income is taxed at exactly 4.95%. No city, county, or local income tax is added.
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Post-Tax Deductions → Net Pay
Post-tax items (Roth 401k, garnishments) subtracted last. Illinois's Wage Payment and Collection Act (820 ILCS 115) requires final wages to be paid at the time of separation or by the next regularly scheduled payday. Willful nonpayment can trigger interest penalties under the Illinois WPCA — one of the more protective wage payment laws among U.S. states.
Section 4 — Minimum Wages by Jurisdiction
Chicago, Cook County & Illinois Minimum Wage 2026
Illinois does not have a single statewide minimum wage for all workers — Chicago, Cook County, and the state each have their own rates, and employer size matters for Chicago workers. Understanding which rate applies to your paycheck is critical, especially for hospitality, retail, healthcare, and gig workers in the Chicago metro area.
Jurisdiction
Employer Size
Min. Wage (2026)
Tipped Min. Wage
Annual Full-Time (40 hr/wk)
Notes
Chicago (Large)
21+ employees
$16.20/hr
$9.48/hr
$33,696/yr
Highest in IL
Chicago (Small)
4–20 employees
$15.60/hr
$9.00/hr
$32,448/yr
Above state floor
Cook County (outside Chicago)
All employers
$15.00/hr
State rate ($9.00)
$31,200/yr
State rate applies
Illinois (Statewide)
All employers
$15.00/hr
$9.00/hr
$31,200/yr
State floor — all of IL
Federal (FLSA)
Covered employers
$7.25/hr
$2.13/hr
$15,080/yr
Superseded by IL/Chicago
Chicago Tipped Workers — Important: Chicago has a separate tipped minimum wage — $9.48/hr for large employers (21+) and $9.00/hr for small employers (4–20). If tips plus the tipped base wage don't reach the applicable full minimum ($16.20 or $15.60), the employer must pay the difference. Chicago's tipped minimum is far above the federal $2.13/hr. Chicago hospitality and food service workers: if your employer is not making up the difference when tips fall short, they are violating Chicago's minimum wage ordinance — contact Chicago's Department of Business Affairs and Consumer Protection (BACP).
County-by-County Laws: What Applies Where
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Cook County
5.2M residents · Illinois's largest county
Cook County encompasses Chicago and over 130 suburban municipalities. Chicago (within Cook County) has its own higher minimum wage ($16.20/$15.60). Unincorporated Cook County and municipalities that have not opted out follow the state $15.00 rate. Cook County's Earned Sick Leave Ordinance (ESLO) provides up to 40 hours of paid sick leave annually, predating the statewide Paid Leave for All Workers Act — Chicago's own paid sick leave ordinance may be more generous. Workers in suburban Cook County municipalities like Evanston, Oak Park, Skokie, and Cicero should verify their municipality's specific ordinances.
Min wage: $15.00–$16.20 depending on locationESLO: 40 hrs paid sick leave
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DuPage County
932K residents · Naperville, Aurora, Wheaton
DuPage County follows the Illinois statewide $15.00/hr minimum wage. No county-specific minimum wage ordinance exists. Key cities include Naperville, Aurora, Wheaton, Downers Grove, and Elmhurst. Illinois's Paid Leave for All Workers Act (40 hrs/year, any reason) applies to all DuPage County employers. DuPage has no local income tax. Workers in DuPage's significant corporate sector (McDonald's HQ, Navistar, Advocate Aurora Health) are typically subject to standard Illinois state law only.
Min wage: $15.00/hr (state rate)Paid Leave Act applies
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Lake County
714K residents · Waukegan, North Chicago, Libertyville
Lake County (bordering Wisconsin) follows the Illinois statewide $15.00/hr minimum wage. No county minimum wage ordinance. Lake County is home to Abbott Laboratories, Baxter International, AbbVie, and Hospira — large pharmaceutical and healthcare employers where workers are typically well above minimum wage. Workers should note that Wisconsin's minimum wage ($7.25/hr) is far lower — remote workers based in Wisconsin but working for Illinois employers should confirm which state's laws apply based on their work location.
Min wage: $15.00/hr (state rate)Pharma/healthcare hub
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Will County & Downstate IL
Joliet, Rockford, Springfield, Peoria
Will County (Joliet), Winnebago County (Rockford), Sangamon County (Springfield), and Peoria County all follow the Illinois statewide $15.00/hr minimum wage. No local minimum wage supplements exist outside the Chicago/Cook County area. These areas have significant manufacturing, healthcare, government, and logistics employment. Note: Illinois's statewide minimum of $15.00 is still among the highest in the country, well above the federal floor. All Illinois workers — including downstate — are covered by the Paid Leave for All Workers Act, the WPCA, and the IHRA regardless of county.
Min wage: $15.00/hr (state rate)All state protections apply
Chicago Fair Workweek Ordinance (2020): Chicago employers in covered industries (food service, retail, hotel, manufacturing, building services, healthcare, and warehousing with 100+ employees or $35M+ in revenue) must provide workers with 10 days advance notice of schedules. If an employer changes a schedule with less than 10 days notice, the employee is owed "predictability pay" — additional compensation of 1–4 hours of pay depending on the change. This ordinance adds meaningful protections for Chicago's hourly workforce beyond what appears in paycheck calculations.
Section 5 — Tax-Advantaged Deductions
Pre-Tax Deductions That Boost Your Illinois Take-Home Pay
Illinois's flat 4.95% rate makes pre-tax deduction math easy and predictable. Every dollar of pre-tax contribution saves exactly 4.95 cents in state tax, plus the federal and FICA savings detailed in our guide to what's deducted from every paycheck. Here is how Illinois workers can maximize take-home pay.
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Traditional 401(k) — Predictable Savings at Every Income Level
In Illinois, the flat 4.95% rate means 401(k) savings are mathematically identical for low and high earners at the state level — $49.50 saved per $1,000 contributed, regardless of your salary. For a Chicago-area worker in the 22% federal bracket maxing their 2026 401(k) at $23,500: Illinois savings: $1,163.25 | Federal savings: $5,170 | FICA savings: $1,797 = total $8,130 in annual tax savings from a single 401(k) election.
Many large Illinois employers — including Boeing, United Airlines, Caterpillar, Allstate, Walgreens, and the numerous Chicago-area financial firms — offer 401(k) plans with significant employer matches. Always contribute at least enough to capture the full match — it's an instant 50%–100% return on your contribution.
2026 limit: $23,500$49.50 saved per $1,000 in IL tax50+ catch-up: +$7,500
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Health Insurance — Large Employer Plans & Illinois State Plan
Illinois has a large state and local government workforce — teachers, state employees, Chicago city employees, CTA workers — all of whom typically have access to comprehensive employer-sponsored health plans. Section 125 cafeteria plan elections make employee health premium contributions pre-tax, reducing gross wages before state, federal, and FICA calculations. Chicago's high cost of living makes health coverage especially important; comprehensive family plans in the Chicago area can run $20,000–$30,000+/year in premiums, with employee contributions of $200–$500+/month — each dollar of which is pre-tax.
Section 125 planSaves IL + fed + FICAState employee plans available
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Illinois Tax Benefits Worth Knowing at Filing Time
Illinois offers the Illinois Education Expense Credit (for K-12 tuition and fees paid to non-public schools — up to $750 credit). The Illinois Earned Income Credit equals 20% of the federal EITC (one of the more generous state EITC add-ons in the country). Illinois's exemption of all retirement income (pension, Social Security, 401k/IRA distributions) is a major benefit that doesn't appear in paycheck withholding but dramatically reduces annual tax liability for qualifying workers. Illinois also allows a property tax credit equal to 5% of property taxes paid, up to $750 for renters/homeowners.
Retirement income: zero IL taxIL EITC: 20% of federal creditEducation expense credit: $750
Chicago workers note: While Chicago has no local income tax on wages, Chicago does impose the city's Personal Property Lease Transaction Tax, Employer's Expense Tax, and various business taxes that can indirectly affect your compensation package (particularly if you receive stock options, equity, or business income). Chicago also has higher sales taxes (10.25%+ combined), parking taxes, and other consumption taxes that affect purchasing power. Your paycheck itself is only subject to the Illinois flat 4.95% state rate — not city tax.
Section 6 — Illinois Payroll Laws
Illinois Payroll Laws — What Employers Must Do
Beyond tax withholding, Illinois has specific payroll compliance requirements that directly affect your paycheck. Understanding these laws helps you verify your employer is following the rules and know when something is wrong.
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Illinois Pay Frequency Requirements
Under the Illinois Wage Payment and Collection Act, Illinois employers must pay wages at least semi-monthly (twice per month). The employer must establish regular paydays and notify employees of the payday schedule. If an employer changes the payday schedule, advance notice is required. Most Illinois employers pay bi-weekly (every two weeks, 26 times per year) or semi-monthly (twice per month, 24 times per year). Weekly pay is also common in construction and manufacturing.
Illinois does not mandate a maximum number of days between paydays for most employees — but the semi-monthly floor is firm. For commission-based and piecework employees, Illinois has additional specific rules under the WPCA.
Minimum: semi-monthly payAdvance notice required for changesWPCA: 820 ILCS 115
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Illinois Pay Stub Requirements
Illinois employers must provide employees with an itemized statement of deductions at each pay period under the WPCA. Your Illinois pay stub should show: gross wages earned, all deductions itemized (federal income tax, Illinois state tax, Social Security, Medicare, health insurance, 401k, etc.), and net pay. Employers must maintain payroll records for at least 3 years. If your employer fails to provide itemized pay stubs, this is a WPCA violation.
Note: Illinois does not require paper pay stubs — electronic pay stubs (accessible via employee portals like ADP, Workday, or Paylocity) satisfy the requirement as long as employees can access and print them.
Itemized deductions requiredRecords: 3 years minimumElectronic pay stubs permitted
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Illinois Overtime Rules — FLSA + State Law
Illinois follows the federal Fair Labor Standards Act (FLSA) overtime standard: 1.5× the regular rate of pay for all hours over 40 per workweek. Illinois does not have a more generous state overtime law for most employees (unlike California's daily overtime requirement). Key point: Illinois law defines the workweek as a fixed, regularly recurring 168-hour period — employers cannot manipulate workweek definitions to avoid overtime. Illinois's One Day Rest in Seven Act (ODRISA) also requires that workers receive at least 24 consecutive hours of rest in every 7-day period.
Illinois's Day and Temporary Labor Services Act provides additional protections for temp workers — including requirements that temp agencies pay at least the same wages as the host employer's directly employed workers doing the same work.
Overtime: 1.5× after 40 hrs/weekODRISA: 1 day off per 7 daysTemp workers: equal pay required
Illinois uses a strict ABC test to classify workers under state wage law. To be classified as an independent contractor (not entitled to minimum wage, overtime, or payroll tax withholding), a worker must meet all three criteria: (A) the worker is free from the company's direction and control; (B) the work performed is outside the usual course of the company's business; (C) the worker is customarily engaged in an independently established trade or business. Illinois's ABC test is particularly significant for rideshare, delivery, and on-demand app workers in Chicago. The Illinois Department of Labor actively investigates misclassification claims — penalties include back wages, interest, and civil fines. If you receive a 1099 instead of a W-2 but work under employer direction, you may be misclassified.
ABC test — all three criteria requiredGig/app workers: often misclassifiedBack wages + 2%/month penalty
📋 Illinois Paycheck Accuracy Checklist
Does Your Illinois Paycheck Add Up?
Illinois has detailed payroll rules — especially in Chicago, which layers its own minimum wage and leave ordinances on top of state law. Here are the most common items to check on an Illinois paycheck:
✓Chicago minimum wage applies if you work in the city ($16.20/hr large employers, $15.60 small) — not just the state $15.00 rate
✓Chicago tipped workers: $9.48/hr base pay (large employer), with tips required to bring total to $16.20/hr
✓Overtime for hours over 40/week paid at 1.5×
✓Paid leave accrual under the Illinois Paid Leave for All Workers Act (1 hour per 40 worked) should appear on your pay stub
✓Final paycheck due at separation or on the next regular payday, whichever is sooner
✓Earned commissions and bonuses count as wages under the Illinois WPCA
✓Deductions for register shortages, breakage, or business losses generally require your written consent
If your paycheck doesn't reflect these rules, compare it against our pay stub guide first, then contact the Illinois Department of Labor (labor.illinois.gov) for state wage questions, or the Chicago Department of Business Affairs & Consumer Protection (BACP) for city ordinance questions.
Section 7 — Pay Laws & Paycheck Factors
Illinois Pay Laws & Paycheck Factors 2026
Illinois has several state-specific rules that directly affect what shows up on your paycheck — from final-pay timing to mandatory paid leave accrual.
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Illinois Wage Payment & Collection Act — Final Pay Timing
The Illinois Wage Payment and Collection Act (WPCA) (820 ILCS 115) requires employers to pay wages on regular pay periods. Final wages on separation must be paid at the time of termination or by the next scheduled payday — see our final paycheck rules guide for how this compares to other states.
Final pay: termination or next payday
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Illinois Paid Leave for All Workers Act — 40 Hours/Year, Any Reason
Illinois enacted the Paid Leave for All Workers Act (effective January 1, 2024), one of the most expansive paid leave laws in the country. Key features: all Illinois employers (regardless of size) must provide up to 40 hours (5 days) of paid leave per year. Unlike sick leave laws that restrict usage to illness, Illinois's law allows leave to be used for any reason — no explanation required. Employees accrue 1 hour per 40 hours worked, and this accrual typically appears as a line item on your pay stub. Leave can begin being used 90 days after employment starts. Chicago has its own paid sick leave ordinance that may provide additional benefits.
Any reason — no explanation neededAll employer sizes covered40 hrs/year minimum
Filing an Illinois Wage Claim: If your paycheck doesn't match what you expect, first check it against our pay stub guide. For unresolved pay disputes, contact the Illinois Department of Labor for free administrative wage claims.
Take-Home Pay Guide
How Much Is Taken Out of My Paycheck in Illinois?
For a Chicago worker earning $65,000/year (bi-weekly), expect roughly $310 in federal income tax, ~$160 in Illinois state tax (4.95% flat), and ~$199 in FICA — leaving approximately $1,875 per paycheck. A $10,000 raise always costs exactly $495 in additional Illinois state tax. Enter your own salary into our nationwide calculator, covering all 50 states.
Salary Calculator
Illinois Salary Calculator — Gross Pay to Net Take-Home
Illinois's flat 4.95% rate simplifies net pay estimation. For workers earning $45,000–$100,000, combined deductions run 25%–33% of gross. Illinois workers at major Chicago employers (United Airlines, Boeing HQ, Abbott) typically access strong 401(k) match programs that significantly reduce taxable income.
Top questions about Illinois take-home pay, the 4.95% flat tax, Chicago minimum wage, county-specific laws, and Illinois worker rights. Updated for 2026.
Illinois's constitution (Article IX, Section 3) explicitly requires that income taxes be levied at a uniform rate for both individuals and corporations. This "flat tax" requirement has been in the Illinois constitution since 1970. In November 2020, Illinois voters rejected Amendment 1 — which would have allowed a graduated (progressive) income tax — by a margin of 55% to 45%. The current 4.95% rate was set in 2017 (increased from 3.75%) through standard legislation. Changing the rate requires only a legislative majority and the governor's signature, but changing to a progressive structure requires a constitutional amendment approved by voters.
No. Chicago has no city income tax on wages. Illinois state law preempts local governments from levying income taxes on wages. Chicago, Naperville, Rockford, Aurora, Joliet — none of Illinois's cities levy local income taxes on employee wages. This is a significant advantage for Chicago workers compared to other major metropolitan areas where city taxes apply — like New York City (city income tax up to 3.876%), Philadelphia (3.75% city wage tax), or St. Louis (1% city income tax). The only income tax withheld from an Illinois worker's paycheck is the state flat rate of 4.95%.
Example: A single Illinois worker earning $70,000/year bi-weekly: Gross per paycheck: $2,692.31 | Federal tax: ~$320 | Illinois state tax (4.95%): ~$122 | Social Security: ~$167 | Medicare: ~$39 | Total deductions: ~$648 | Take-home: approximately $2,044 per bi-weekly paycheck (~$53,144/year). Adding pre-tax 401(k) contributions would increase take-home by reducing taxable income. Use our calculator above for your specific situation.
Illinois's statewide minimum wage reached $15.00/hour on January 1, 2025, ahead of the original 2025 target date. For 2026, the state minimum is $15.00/hour (or potentially slightly higher if indexed to CPI). Chicago has a higher minimum wage that adjusts annually: as of July 2024, Chicago's minimum wage is $16.20/hour for employers with 21+ employees, and $15.00/hour for smaller employers. Cook County also has its own minimum wage that applies to unincorporated areas of the county. Employers operating in Chicago must pay whichever rate is higher — city or state.
Yes — Illinois is one of the most retirement-tax-friendly states in the country. Illinois completely exempts from state income tax: Social Security benefits, distributions from qualified retirement plans (401k, 403b, IRA), pension income from government retirement systems (including state and local government pensions, military pensions, and railroad retirement), and annuity payments from qualified plans. This means a retired Illinois state worker, school teacher, or military veteran can receive substantial pension income and pay zero Illinois state income tax on it. This exemption makes Illinois's 4.95% flat rate misleading as a measure of effective tax burden for retirees or those near retirement.
Illinois law strictly limits unauthorized paycheck deductions. Under the Wage Payment and Collection Act, Illinois employers may only deduct from wages: legally required deductions (taxes, garnishments), deductions you specifically authorized in writing (insurance, retirement, union dues), and deductions for loans or advances you accepted. Employers cannot deduct for cash register shortages, broken equipment, or business losses without your prior written consent — and even then, deductions cannot bring your wages below minimum wage. Violating these rules can trigger penalties under the Illinois WPCA. If your paycheck shows an unexplained deduction, start by asking your employer for a written explanation and comparing it against your signed authorizations.
Illinois tipped employees must be paid a cash wage of at least $9.00/hour statewide in 2026 (60% of the $15.00 minimum). Tips must bring the total to the applicable minimum wage — if they don't, the employer is required to make up the difference. This is called the "tip credit."
In Chicago, tipped employees must be paid $9.48/hr (large employers, 21+) or $9.00/hr (small employers, 4–20), with tips bringing total compensation to $16.20 or $15.60 respectively. Chicago's tipped minimum is significantly higher than both the Illinois state rate and the federal $2.13/hr tipped minimum. Chicago bartenders, servers, and hospitality workers working for large employers who are not being paid at least $9.48/hr in base wages have a valid wage claim.
Illinois's flat 4.95% rate means your effective Illinois state tax rate equals your marginal rate at every income level — unlike progressive states where high earners pay a higher percentage. For a worker earning $45,000/year in Illinois, the IL state tax is approximately $2,227/year. In Wisconsin (top bracket 7.65%), the same income might generate $2,000–$2,400 in state tax — comparable. But for a $150,000 earner, Illinois collects ~$7,425 while Wisconsin could collect $10,000–$11,000 and Minnesota up to $13,000+.
The practical paycheck impact: Illinois withholding is perfectly linear with income — predictable and easy to estimate. There are no "bracket cliff" effects. Every $1,000 raise increases your annual IL tax by exactly $49.50 regardless of your income level.
No — paycheck withholding (income tax) is identical throughout Illinois, including Cook County. Illinois's flat 4.95% state tax and prohibition on local income taxes means Cook County does not add any additional withholding to your paycheck compared to downstate Illinois. Whether you work in the Chicago Loop, suburban Naperville (DuPage County), or Rockford (Winnebago County), your IL state tax withholding rate is the same 4.95%.
Where Cook County (and Chicago specifically) differs from the rest of Illinois is in minimum wage (Chicago: $16.20/$15.60/hr vs. $15.00 elsewhere), paid sick leave (Cook County ESLO predating the statewide PLAWA), and the Chicago Fair Workweek Ordinance which does not apply outside Chicago city limits.
Illinois's Paid Leave for All Workers Act (PLAWA), effective January 1, 2024, requires all Illinois private employers — regardless of size — to provide up to 40 hours of paid leave per year. Employees accrue 1 hour per 40 hours worked. Crucially, this paid leave can be used for any reason — employees do not need to provide a reason, medical documentation, or explanation.
The PLAWA does not affect your paycheck withholding calculations directly — your gross pay when using PLAWA leave is the same as regular pay, so taxes are withheld normally. What it does affect is your ability to take paid time off without losing income, effectively protecting your gross pay in situations where you'd otherwise take unpaid leave. Chicago and Cook County have their own paid sick leave ordinances that may provide additional or overlapping benefits — workers in Chicago should check both the statewide PLAWA and the Chicago Paid Sick Leave Ordinance.
If you physically work in Illinois (your home office is in Illinois), you owe Illinois state income tax (4.95%) on that income, regardless of where your employer is incorporated or headquartered. Your employer is required to withhold Illinois state income tax if you are an Illinois resident working in Illinois — even if they're based in California, Texas, or New York.
If your employer is not withholding Illinois state tax, you are responsible for making estimated quarterly tax payments to the Illinois Department of Revenue to avoid underpayment penalties. Some remote workers receive a W-2 that only shows another state's withholding — in this case, you may owe Illinois tax and receive a credit for taxes paid to the other state (to the extent Illinois's rate exceeds the other state's rate). Consult a tax professional if your employer withholds for a different state. Illinois has no additional "remote work tax" beyond the standard 4.95% flat rate.
Illinois's WPCA Adds 2% Monthly Interest to Every Unpaid Dollar
Illinois has some of the most employee-friendly wage payment laws in the country — prompt final-pay requirements, mandatory paid leave accrual, and clear rules around what employers can and cannot deduct from your paycheck.
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Related Searches — Illinois Paycheck Calculator
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Worked Example
🌆 Illinois: Real Paycheck Breakdown 2026
Finance, healthcare & manufacturing · Chicago metro premium wages · 2%/month late payment penalties · Single filer · Bi-weekly pay (26 paychecks/year)
Take-Home (Bi-weekly)
$1,974
Gross (bi-weekly)
$2,615.38
— Federal Income Tax
-$319
— Illinois State Tax
-$122
— Social Security + Medicare
-$200
Net Take-Home Pay
$1,974
Key insight: Illinois has some of the strongest wage payment protections in the Midwest — the Illinois Wage Payment and Collection Act requires prompt payment of all wages owed, including commissions and bonuses, on regular pay periods.
Need a different salary or filing status? Use the Illinois paycheck calculator above.
How Illinois Compares
Illinois's constitution requires a flat income tax — any change to a progressive system would require a constitutional amendment. The rate has been 4.95% since 2017. Neighboring state: Indiana (3.15% flat) or Wisconsin (3.54%–7.65%).