Illinois State Taxes and Income Tax
Prepare and e-file your 2024 year Illinois state tax return - resident, nonresident, or part-year resident returns - together with your IRS return now via eFile.com.
- Keep in mind, the IRS and the IL state tax agencies require you to e-file a federal income tax return at the same time you e-file your Illinois state tax return. This is not an eFile.com policy but an IRS and state agency policy. See detailed instructions on how you can only prepare and mail in - not eFile - an Illinois Tax Return- here via eFile.com.
- IL taxes are generally due when the IRS return is due, thus you should e-file them together to avoid any late penalties. This way, you do not need to worry about mailing anything.
- Get your IRS and IL returns filed online on eFile.com! Start and eFileIT.
IL Tax Help and Resources
Prepare only an IL State Return
Where Is Your IRS Refund?
Illinois Income Tax Extension
Illinois Income Tax Amendment
Illinois, IRS Late Filing, Tax Payment Penalties
- Late Filing Penalty: You will be assessed a penalty of $250 or 2% of the tax owed (whatever is less) per month you file your return after the tax return deadline. The penalty is reduced by timely payments or credits. In the event you file your return on time but the return cannot be processed, you will have 30 days to correct the return before any penalty is due. If you do not file your return within 30 days after you receive a notice of non-filing, you will be imposed an additional penalty of $250 or 2% of the taxes owed shown on your return (whatever is greater) without regard to timely payments. Not only will the additional penalty not exceed $5,000, but it will be assessed even if there is no tax due.
- Late Payment Penalty: This penalty is based on the number of days you submit your total taxes owed late (1-30 days: 2%; 31+ days: 10%). The penalty is 15% of any amount that is not paid until after an audit or investigation of your liability is initiated, and 20% of any amount that is not paid within 30 days after the IL state tax agency sends you an audit-prepared amended return for you to sign and send to the agency. The 20% penalty also applies to the amount you paid within the 30-day period if you fail to sign and return the amended return within that period or if you paid the tax due under protest or subsequently file a claim or refund of the payment.
- IRS Penalties: Calculate and estimate your potential IRS income tax return penalties.
Illinois Income Tax Brackets
Illinois Income Tax Forms
Illinois Unemployment Benefits
Illinois Marriage Penalty
Start Federal and Illinois Tax Returns
As you work on your federal and state income tax returns, the system automatically selects the necessary state tax forms for you. No need to worry about missing anything. You can also choose specific forms if needed. The best part? All your chosen forms get electronically submitted along with your main tax returns, saving you the hassle of paperwork. However, if you only need to prepare a state income tax return without the federal component, eFile.com offers separate instructions for that process.
CPP-1 - Illinois State Tax Installment Payment Plan Request
EG-13-I - Illinois Financial and Other Information Statement for Individuals
IL-1040-ES - Illinois Estimated Income Tax Payments for Individuals
IL-1310 - Illinois Statement of Person Claiming Refund Due a Deceased Taxpayer
IL-W-4 - Illinois Employee's and other Payee's Withholding Allowance Certificate
IL-1040 - Individual Income Tax Return
IL-1040-X - Illinois Amended Individual Income Tax Return
IL-1310 - Statement of Person Claiming Refund Due a Deceased Taxpayer
IL-505-I - Illinois Automatic Extension Payment for Individuals
Schedule ICR - Illinois Credits
Schedule M - Other Additions and Subtractions for Individuals
Schedule NR - Nonresident and Part-Year Resident Computation of Illinois Tax
Due to IRS and state tax data sharing and validation requirements, you can only e-file a state income tax return while also e-filing a federal income tax return. This is not an eFile.com regulation; all online tax filing websites have to adhere to this IRS/state issued tax data sharing policy. You can, however, prepare all 44 state income tax returns on eFile.com if you have already e-filed or filed your IRS return. See instructions on how you can ONLY prepare and file state income tax return(s). Only on eFile.com can you prepare, file, or e-file unlimited state tax returns for one low price and not pay for each state return like you would do on H&R Block® vs. TurboTax®. Dare to compare now.
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