Follow the instructions to complete your return. If you already have a MyTax Illinois account, you can login to your account to file your IL-1040 if you meet the eligibility requirements. For a printable …

Download or print the 2025 Illinois Form IL-1040 (Individual Income Tax Return) for FREE from the Illinois Department of Revenue.

Download or print the 2025 Illinois (Individual Income Tax Return) (2025) and other income tax forms from the Illinois Department of Revenue.

The Illinois Department of Revenue uses Form IL-1040 to provide state income tax returns for individual taxpayers. The form is similar to federal Form 1040 but includes additional fields for Illinois …

This calculator uses Illinois' flat tax rate of 4.95% and the personal exemption allowance of $2,775 for tax year 2026. It is designed to mirror Form IL-1040 computations while keeping all thresholds and …

Nov 17, 2025 · For tax years 2019 through current year, you can file your original Form IL-1040 through your MyTax Illinois account. Use MyTax Illinois to electronically file your original Individual Income …

Apr 15, 2025 · The state of Illinois automatically grants a six-month extension to file your Illinois individual income tax return (Form IL-1040). For calendar year filers, the extended due date is …

2024 Form IL-1040 Individual Income Tax Return *60012241W* or for fiscal year ending / Step 1: Personal Information Enter personal information and Social Security numbers (SSN). You must …

May 27, 2025 · Simply print, sign, and mail the completed forms to the Illinois Department of Taxation. Need Previous Year IL Forms? Utilize the search function below if you can't locate a specific IL form. …

Jun 3, 2025 · Filing an amended individual income tax return is a simple way to correct the situation and ensures you either pay what you owe or receive a refund of what you are due. Use the Correct Form …