Illinois income tax calculator
An effective rate of 4.76%, with 4.95% on the next dollar. That is the 5th-largest state income tax bill on $75,000 of the 51 jurisdictions.
- Top rate
- 4.95%
- Rate on your last dollar
- 4.95%
- State taxable income
- $72,075
- Effective rate
- 4.76%
Illinois taxes every dollar of state taxable income at a single rate of 4.95% — the 24th-highest top rate of the 51 jurisdictions. Illinois has no standard deduction, so a single filer subtracts a $2,925 personal exemption instead. Because the rate itself never changes, the effective rate moves only as those fixed dollar amounts shrink against a bigger salary — 4.59% on $40,000, rising to 4.85% on $150,000.
Illinois 2026 tax rate
One rate, applied to state taxable income after the deductions below.
Single · Married filing jointly · Head of household
| State taxable income | Rate |
|---|---|
| All state taxable income | 4.95% |
Illinois deductions and exemptions
| Amount | Single | Married filing jointly | Head of household |
|---|---|---|---|
| Personal exemption (subtracted from income) | $2,925 | $5,850 | $2,925 |
Work out your own Illinois tax
Already set to Illinois and the 2026 federal schedule. Change the income, the filing status or the year and everything below updates.
Wages, interest, business income, etc. Exclude pre-tax 401(k) and HSA contributions.
Adds state income tax using that state's own rate schedule and standard deduction. Pick the last option to type a flat rate instead.
- Effective federal tax rate
- 10.23%Federal tax as a share of the income you entered.
- Marginal bracket
- 22%The rate on your next dollar of taxable income.
- State income tax
- $3,567.71From the selected state's rate schedule, or your flat rate.
- Federal + state income tax
- $11,237.71
- Income after income tax
- $63,762.29
- Taxable income
- $58,900.00
- Deduction applied
- $16,100.00
Assumptions
- Ordinary-income rate schedules only; no credits, AMT, capital-gains rates, QBI deduction or the 2025–2028 senior deduction.
- Standard deduction (plus additional amounts for 65+/blind) or your itemized figure, whichever is larger; no dependent-filer limitation.
- Married filing separately uses half the joint federal thresholds, per the IRS schedule, and the state's single-filer schedule.
- State tax uses each state's published rate schedule, standard deduction and personal exemption for the tax year shown with the results; the source URL and year for the state you pick are printed above the results, along with the simplifications made for that state.
- State figures exclude county, municipal and city income taxes, itemized deductions, retirement and capital-gains exclusions, and credits that phase out. Unlisted states fall back to the flat rate you enter.
| Taxable income | Rate | Your income in this bracket | Tax |
|---|---|---|---|
| $0 – $12,400 | 10% | $12,400 | $1,240 |
| $12,400 – $50,400 | 12% | $38,000 | $4,560 |
| $50,400 – $105,700 | 22% | $8,500 | $1,870 |
| $105,700 – $201,775 | 24% | $0 | $0 |
| $201,775 – $256,225 | 32% | $0 | $0 |
| $256,225 – $640,600 | 35% | $0 | $0 |
| Over $640,600 | 37% | $0 | $0 |
Illinois income tax at other incomes
| Gross income | Single | Effective | Married jointly | Effective |
|---|---|---|---|---|
| $30,000 | $1,340 | 4.47% | $1,195 | 3.98% |
| $50,000 | $2,330 | 4.66% | $2,185 | 4.37% |
| $75,000 | $3,568 | 4.76% | $3,423 | 4.56% |
| $100,000 | $4,805 | 4.81% | $4,660 | 4.66% |
| $150,000 | $7,280 | 4.85% | $7,135 | 4.76% |
| $250,000 | $12,230 | 4.89% | $12,085 | 4.83% |
State income tax only, filing status as shown, after Illinois’s own deductions. Federal tax is on top of every figure here.
How the neighbours compare
Illinois borders 5 other jurisdictions. Moving across a state line is the one way most people can actually change which of these schedules applies to them, so here is the same income run through each of them.
| State | Rate structure | $50,000 | $75,000 | $150,000 |
|---|---|---|---|---|
| Illinois | Flat 4.95% | $2,330 | $3,568 | $7,280 |
| Indiana | Flat 2.95% | $1,446 | $2,183 | $4,396 |
| Iowa | Flat 3.8% | $1,248 | $2,198 | $5,048 |
| Kentucky | Flat 3.5% | $1,632 | $2,507 | $5,132 |
| Missouri | 0% – 4.7% | $1,434 | $2,609 | $6,134 |
| Wisconsin | 3.5% – 7.65% | $1,577 | $2,944 | $7,309 |
State income tax on a single filer, after each state’s own deductions. Federal tax is identical wherever you live, so the difference between these rows is the whole difference.
What these Illinois figures leave out
Recorded against Illinois in the data rather than glossed over, because they change real bills.
- Illinois has no standard deduction; the only subtraction modelled is the $2,925 personal exemption allowance for 2026.
- The exemption allowance is disallowed entirely if federal AGI exceeds $250,000 ($500,000 married filing jointly); that cliff is not modelled.
Frequently asked questions
▸Does Illinois have a state income tax?
Yes. Illinois taxes state taxable income at a flat 4.95%, whatever you earn and whichever status you file under.
▸How much state income tax would I pay on $75,000 in Illinois?
About $3,568 for a single filer — an effective rate of 4.76%. That is $75,000 less $2,925 of state deductions, leaving $72,075 of taxable income taxed at 4.95% at the margin.
▸What is the top income tax rate in Illinois?
4.95% — there is only one rate, which makes it the 24th-highest top rate among the 50 states and the District of Columbia.
▸What is the Illinois standard deduction?
Illinois has no standard deduction. It allows a $2,925 personal exemption per filer instead, subtracted from income before the rates apply.
Source
Illinois Department of Revenue — Income tax rates and 2026 exemption allowance
Tax year 2026 figures, last checked against the source on 2026-09-09.
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Illinois income tax calculator: Illinois income tax on $75,000, filing single is $3,568. Source: https://www.calculateitnow.dev/illinois-income-tax-calculator