File your 2025 taxes in Illinois — federal & state
Complete guide to file your 2025 federal and state tax return as a Illinois resident. Illinois is home to about 12,600,000 people and a Latino population of 18.4%, so we built USA Taxes to work in both English and Spanish.
How much tax does Illinois charge?
Illinois collects a state income tax with a top marginal rate of 4.95% for tax year 2025. The Illinois Department of Revenue administers the return and sets the brackets below.
Illinois 2025 brackets — single filer
| Rate | Taxable income |
|---|---|
| 4.95% | Over $0 |
Source: Illinois Department of Revenue, 2025 schedule. USA Taxes uses these brackets in the state tax estimator inside your Illinois return.
What forms do I need to file in Illinois?
Most Illinois filers need the same federal documents the IRS requires, plus any state-specific schedules. Upload them once and USA Taxes' OCR auto-fills your return.
Wage and salary statement from each employer you had in 2025.
For freelance income, interest, dividends, broker sales and gig work.
Medical, charitable, property tax and SALT receipts if you itemize on Schedule A.
Mortgage interest statement and property tax records from your lender.
Written acknowledgements from 501(c)(3) charities for gifts of $250+.
Government-issued ID and Social Security Numbers for you, your spouse and dependents.
E-file in Illinois: available through an IRS-authorized provider.
Illinois tax filing FAQ
How much does tax filing software cost in Illinois?
USA Taxes starts at $29 for a Simple return and $59 for the Deluxe plan for Illinois residents. The national average for comparable software runs $60 to $120 per return, so you save versus TurboTax and H&R Block.
What is the top Illinois state income tax rate for 2025?
The top Illinois state income tax rate for tax year 2025 is 4.95%. The Illinois Department of Revenue administers the state income tax.
Can I e-file my Illinois state tax return online?
Yes. Illinois accepts electronic filing of state returns. USA Taxes prepares your federal Form 1040 and state schedules as IRS-format PDFs ready to e-file through an authorized provider.
When is the Illinois tax filing deadline?
The deadline to file your federal and Illinois 2025 tax return is April 15, 2026. If you need more time, you can request an automatic 6-month extension by filing Form 4868 before that date.
Does USA Taxes support bilingual filing for Illinois Latino residents?
Yes. The entire platform is available in English and Spanish. You can switch languages anytime from the top menu. Final PDFs are generated in the official IRS format in English (as required by federal law).
Ready to file your Illinois return?
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