1099 Tax Calculator for Illinois — 2026
By Taxorly · Reviewed · How we calculate
Illinois's top marginal rate is 4.95%, 24th of 51 states, and applies only to income in the top bracket. On $75,000 of 1099 income that is $3,450 to Illinois on top of federal self-employment and income tax — about 18% of your total $18,945 bill, leaving $56,055. Neighbouring Iowa (top rate 3.8%) would take $1,453 less a year at this income.
Income Details
Your Net Take-Home Pay
Monthly
$4,671
Biweekly
$2,156
Weekly
$1,078
Hourly
$27
Tax Breakdown
Effective Rate: 25.3%
Distribution
Estimated Quarterly Payments
$3,874 to the IRS each quarter — self-employment tax plus federal income tax.
$863 to the Illinois revenue department, separately. Check your state's schedule; not every state uses four equal instalments.
Estimates for planning, not tax, legal or financial advice. Taxorly is not affiliated with the IRS or any state tax agency. Check your figures with a licensed tax professional before you file. How we calculate · Full disclaimer
SE Tax Rate
15.3%
Federal
State Tax
4.6%
Illinois, at $75k
SE Deduction
50%
of SE tax
Std Deduction
$16,100
Single
1099 Take-Home Pay — Illinois (2026)
| 1099 Income | SE Tax | Federal | IL Tax | Take-Home | Quarterly |
|---|---|---|---|---|---|
| $25,000 | -$3,532 | -$571 | -$1,150 | $19,747 | $1,313 |
| $50,000 | -$7,065 | -$2,667 | -$2,300 | $37,968 | $3,008 |
| $75,000 | -$10,597 | -$4,898 | -$3,450 | $56,055 | $4,736 |
| $100,000 | -$14,130 | -$8,235 | -$4,600 | $73,035 | $6,741 |
| $150,000 | -$21,194 | -$16,413 | -$6,900 | $105,493 | $11,127 |
* Single filer, standard deduction. "Quarterly" = estimated quarterly tax payment.
About these Illinois figures: state tax here is calculated from a compiled 2025/2026 rate table using each jurisdiction's brackets and standard deduction — not from Illinois's own published schedule, and not every entry has been confirmed against it. Treat the result as an estimate and check anything you are relying on with Illinois's revenue department. Federal figures come from published IRS releases and are cited on the pages that use them. See how we calculate and what has been verified.
What Is a 1099 Tax in Illinois?
No employer withholds tax from a 1099-NEC, so a Illinois contractor settles the whole bill themselves. Worked through on $75,000 of net freelance income, the three pieces come out like this:
- Self-employment tax — $10,597: 15.3% covering Social Security and Medicare, charged on 92.35% of net earnings. Federal, so it is the same in Illinois as anywhere else.
- Federal income tax — $4,898: what remains after deducting half your self-employment tax and the $16,100 standard deduction, then running the 2026 brackets.
- Illinois income tax — $3,450: 4.60% of your gross income once Illinois's brackets and deductions are applied, which is 18% of everything you owe and ranks Illinois 24 of 51 nationally.
That totals $18,945, an effective rate of 25.3%, leaving $56,055 once Illinois has taken its share.
Illinois vs Neighbouring States
Same $75,000 of 1099 income, same federal tax — only the state layer changes. Illinois ranks 24 of 51 nationally.
1099 Tax FAQ — Illinois
How much should I set aside for 1099 taxes in Illinois?
Budget about 25.3% of your gross 1099 income. At $75,000 that breaks down as $10,597 self-employment tax, $4,898 federal income tax and $3,450 to Illinois — $4,736 every quarter. The share rises with income: 24.1% at $50,000 and 28.3% at $120,000.
What is the Illinois state tax rate on freelance income in 2026?
The top marginal rate is 4.95%, the 24th highest of the 50 states and DC, and 0.0 points above the 4.9427% average top rate. That rate applies only to income in the top bracket: on $75,000 of 1099 income Illinois takes $3,450, about 4.6% of it. This calculator applies the full bracket schedule to your own figures.
Would I pay less tax freelancing from Iowa instead of Illinois?
On state tax alone, yes: $1,453 a year less at $75,000 of income: Iowa would take $1,997 against $3,450 in Illinois. Your federal self-employment tax of $10,597 does not change — it follows you to any state. Residency rules decide which state may tax you, not where your clients are.
When are quarterly estimated payments due for Illinois freelancers?
Federal estimates for the 2026 tax year fall on April 15, 2026, June 15, 2026, September 15, 2026 and January 15, 2027 — roughly $4,736 each at $75,000 of income. Illinois runs its own estimated payment schedule for the state portion, about $3,450 a year at this income; confirm the current dates with the Illinois revenue agency before you file.
What does $75,000 of 1099 income actually leave me in Illinois?
$56,055 after federal and state tax, an effective rate of 25.3%. Among Illinois's 5 neighbouring states the same income leaves between $57,154 and $57,508. The figures assume a single filer taking the standard deduction and no business write-offs — deductions push the real number higher.
When are quarterly estimated taxes due for Illinois freelancers in 2026?
Federal estimated payments for 2026 are due April 15, 2026, June 15, 2026, September 15, 2026, January 15, 2027. The IRS expects them if you will owe $1,000 or more for the year. Illinois has its own estimated-payment rules; check the Illinois revenue department for its dates and threshold.
How is self-employment tax worked out in Illinois?
The same way in every state: 15.3% (12.4% Social Security, 2.9% Medicare) on 92.35% of net earnings, with the Social Security part stopping at $184,500 for 2026 and Medicare continuing above it. Half of it is deductible on your federal return. Illinois's income tax is charged separately, on top.
Where these figures come from
Every rate and threshold used on this page is taken from the 2026 IRS publications below, not from estimates. Figures are reviewed when the IRS publishes its annual adjustments.
- Rev. Proc. 2025-32 — 2026 brackets and standard deduction
- IRS Topic 751 — Social Security wage base
- IRS standard mileage rates
- Form 1040-ES — quarterly payment due dates
Estimates for planning only, not tax advice. See the full method and its limits, and confirm with a CPA before you file.