🧮 Calculate Your Illinois Freelancer Taxes
Select Illinois in the state dropdown for an instant breakdown of all your taxes.
Open the Calculator →Illinois Freelancer Tax Rates 2026
Illinois uses a flat state income tax of 4.95% — every dollar of income is taxed at the same rate, regardless of how much you earn.
| Tax Type | Rate | Notes |
|---|---|---|
| Self-Employment Tax | 15.3% | Federal — Social Security + Medicare |
| Federal Income Tax | 10% – 37% | Progressive brackets, standard deduction applied |
| Illinois State Income Tax | 4.95% | Flat rate — same for all income levels |
| Chicago City Income Tax | 0% | Chicago has no personal income tax |
Example: Illinois Freelancer Earning $75,000 (2026)
| Tax Component | Amount |
|---|---|
| Self-Employment Tax (15.3%) | $10,597 |
| Federal Income Tax | $6,504 |
| Illinois State Tax (4.95%) | $3,305 |
| Total Tax | $20,406 |
| Take-Home Pay | $54,594 |
| Effective Total Rate | 27.2% |
Illinois 1099 Tax Details 2026: Brackets, Deductions & Rankings
Illinois uses a flat 4.95% income tax: no brackets to climb, the same rate at $20,000 as at $200,000.
Illinois offers no state standard deduction, so tax applies from the first dollar of adjusted gross income. A personal exemption of $2,925 single / $5,850 married also reduces taxable income.
At $75,000 net profit, Illinois ranks #48 of 51 jurisdictions for total 1099 tax burden (rank 1 = lowest). A single freelancer pays $3,305 in state tax on top of $17,101 federal — $20,407 total, a 27.2% effective rate.
What a single freelancer pays in Illinois (2026)
| Net profit | Illinois state tax | Total tax (SE + federal + state) | Take-home | Effective rate |
|---|---|---|---|---|
| $50,000 | $2,155 | $12,616 | $37,384 | 25.2% |
| $75,000 | $3,305 | $20,407 | $54,593 | 27.2% |
| $100,000 | $4,456 | $30,201 | $69,799 | 30.2% |
| $150,000 | $6,756 | $50,141 | $99,859 | 33.4% |
Single filer, standard deduction, no QBI or other deductions. Computed with the same 2026 engine as the calculator.
How Illinois compares to its neighbors at $75,000
| State | State tax | Total tax | vs Illinois |
|---|---|---|---|
| Wisconsin | $2,314 | $19,415 | $992 less |
| Indiana | $2,027 | $19,128 | $1,279 less |
| Missouri | $2,339 | $19,440 | $967 less |
| Iowa | $1,997 | $19,098 | $1,309 less |
Sources: IRS Rev. Proc. 2025-32 (federal brackets & standard deduction), SSA 2026 wage base ($184,500), Tax Foundation 2026 state individual income tax data, and the Illinois Department of Revenue. Last updated July 18, 2026.
When Illinois Freelancers Pay Quarterly Estimated Taxes (2026)
Illinois taxes income at a flat 4.95%. If you reasonably expect to owe more than $1,000 in Illinois tax after withholding and credits, you must make quarterly estimated payments. Illinois uses the same four due dates as the IRS.
| 2026 installment | Income period | Illinois due date |
|---|---|---|
| 1st | Jan 1 – Mar 31 | April 15, 2026 |
| 2nd | Apr 1 – May 31 | June 15, 2026 |
| 3rd | Jun 1 – Aug 31 | Sept 15, 2026 |
| 4th | Sep 1 – Dec 31 | Jan 15, 2027 |
Pay online through MyTax Illinois (mytax.illinois.gov) or mail Form IL-1040-ES to the Illinois Department of Revenue. Good news for planning: because Illinois is a flat-rate state with no local income tax, your estimate is simply 4.95% of net Illinois income — no bracket math. Estimate your quarterly payment →
Two Illinois Rules the Flat 4.95% Rate Hides
Illinois taxes income at a single flat rate, which makes it one of the easier states to estimate. Two things behind that simple number change what freelancers actually owe.
1. The Personal Property Replacement Tax on entities
Illinois charges a Personal Property Replacement Tax (PPRT) on business entities, on top of the income tax its owners already pay. It is not a well-known tax outside the state, and it lands specifically on people who have incorporated.
| How you operate | Replacement tax |
|---|---|
| Sole proprietor | Not subject |
| Partnership, LLC taxed as a partnership | Subject — charged on net income |
| S-corporation | Subject — charged on net income |
| C-corporation | Subject at the higher corporate rate |
A single-member LLC treated as a disregarded entity for federal purposes generally reports on the owner's return and is outside the replacement tax. Elect partnership or S-corp treatment and the position changes. This is one of the clearest cases anywhere of a federal tax election creating a state tax bill, so get advice before making that election in Illinois. Current rates are published by the Illinois Department of Revenue.
2. Illinois does not use the federal standard deduction
Your federal return applies a standard deduction before tax is calculated. Illinois does not. The state starts from federal adjusted gross income, applies its own additions and subtractions, and allows a personal exemption that is far smaller than the federal standard deduction.
The practical result is that a much larger share of your income is exposed to the 4.95% rate than a quick mental calculation suggests. Freelancers who estimate their Illinois bill by applying 4.95% to their federal taxable income consistently underpay, because the Illinois base is bigger. The calculator above works from the state's own base, not the federal one.
Illinois also does not conform to the federal qualified business income deduction, so the up-to-20% write-down that reduces your federal bill does nothing for your Illinois one.
The good news about Chicago
Chicago levies no city income tax. A freelancer in Chicago pays the same 4.95% as one in Peoria — which is a genuine advantage over New York City, Philadelphia or Detroit, where local income taxes stack on top of the state rate.
Chicago does levy other business taxes, including a lease transaction tax that catches cloud software and certain rentals, and the city requires business licensing for some activities. These are generally small or inapplicable for a solo service freelancer, but worth checking with the city if you sell software or rent equipment rather than sell your time.
Illinois Freelancer FAQ
What is the Illinois income tax rate for freelancers in 2026?
Illinois charges a flat 4.95% state income tax on all income levels. Unlike progressive states like New York or California, every dollar of freelance income in Illinois is taxed at the same 4.95% rate — making tax planning straightforward.
Do Chicago freelancers pay a city income tax?
No. Chicago does not have a personal income tax. Chicago and all Illinois freelancers pay only the state flat rate (4.95%) plus federal taxes. No additional city income tax applies to freelance earnings.
How much tax does an Illinois freelancer earning $75,000 pay?
An Illinois freelancer earning $75,000 pays approximately $10,597 in SE tax, $6,504 in federal income tax, and $3,305 in Illinois state income tax — totaling about $20,406, or an effective rate of roughly 27.2%. Take-home pay is approximately $54,594.
Ready to See Your Exact Illinois Tax Numbers?
Use our free calculator — select Illinois for your full federal + state breakdown.
Calculate My Illinois Taxes →📐 How we calculate Illinois's numbers
This tool applies Illinois's flat 2026 state income tax rate of 4.95% to the correct income base — with its standard deduction and exemptions — on top of federal and self-employment tax, so your estimate reflects what you'd actually owe.
- Federal brackets & standard deduction: IRS Rev. Proc. 2025-32 (2026)
- Self-employment tax: 15.3% with the 92.35% net-earnings adjustment, the 50% SE-tax deduction, and the 0.9% Additional Medicare Tax — per IRS rules
- Social Security wage base: $184,500 for 2026 (SSA)
- Illinois income tax: flat 4.95% for 2026, per the state tax authority and the Tax Foundation
Built & maintained by Rahul B.
A software developer who got tired of “free” 1099 calculators that use lazy flat rates and give wrong numbers — so I built one on the actual 2026 IRS brackets and real state-by-state rates, updated every tax year. More about this tool →
Last reviewed for tax year 2026 · Independent tool — not affiliated with the IRS. Estimates for planning only; verify with a tax professional before filing.