Illinois State and Local Taxes

To access individual state and local taxes, click on the corresponding state below:

Illinois State Taxes

Department of Revenue

MyTaxIllinois - Payments

Illinois Business Taxes

Entity Registration

Sales Tax

General Sales Tax Information
(Including rates, due dates, and forms)

Tax Rate Finder

Flowchart - In-State Retailer's Responsibilities

Flowchart - Out-of-State Retailer's Responsibilities

Corporate Income Tax

Corporate Income Tax Overview
(including due date, forms and extension information)

Pass Through Entities

Pass Through Entity Tax Overview

Pass Through Entity FAQs

S-Corporation Information

Partnership Information

Property Tax

Property Tax - County Assessor Information

Personal Property Tax - n/a

Illinois Individual Taxes

Income Tax

General Filing Information

Due Date and Extension Information

Individual Forms