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MyTax Illinois
Core Resources
Resources for Individuals
- File your IL-1040 - Use our updated non-login application to file without a MyTax Illinois account or Login to your account. If you don't already have an account, you may sign up for a MyTax Illinois account.
- File an amended return, IL-1040-X for tax years ending December 31, 2020, and December 31, 2021 (MyTax Illinois account is required) - Login to your account. If you don’t already have an account, sign up for a MyTax Illinois account.
- Retrieve a saved or submitted IL-1040
- Look up estimated (IL-1040-ES) or extension (IL-505-I) payments
- Check on the status of your refund
- Look up your 1099-G information
- Sign up for a MyTax Illinois account
- File a Use Tax return (Form ST-44)
- File a Cigarette Use Tax return (Form RC-44)
- Register a new sole proprietorship (Form REG-1)
- Go to more information about e-Services offered by IDOR
- Login to your MyTax Illinois account
Resources for Businesses (sales, excise, business income, and withholding income taxes)
- MyTax Illinois account - Sign up
- MyTax Illinois account - Login
- Retrieve a saved return
- File a Use Tax return (Form ST-44)
- File a Cigarette Use Tax return (Form RC-44)
- Register a new business (Form REG-1)
Resources for IFTA Carriers
- Apply for IFTA license and decals (Form MFUT-12) Note: This is for new IFTA carriers only. If you already have an Illinois IFTA license, login to your MyTax Illinois account or click ‘Sign up for a MyTax Illinois account’ below to create your account.
- Retrieve a saved application
- Sign up for a MyTax Illinois account
- Register a new business (Form REG-1 – If you need to register for taxes other than IFTA)
- Login to your MyTax Illinois account