Online: Illinois
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Articles in Online: Illinois
Illinois - How to Apply Refund to Estimated Tax Payments
If a taxpayer owes additional taxes to Illinois during the year, they may be required to make estimated tax payments for the following tax year.
Illinois Supported Individual Income Tax Forms
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Illinois - Property Tax Credit
The property tax credit is available to residents who paid taxes on their main home that was located in Illinois for the time you owned and lived in the home.
Illinois - Credit for Taxes Paid to Another State
Illinois residents may claim a nonrefundable credit for taxes paid to another state.
Illinois - Amount paid with request for extension
When a taxpayer makes an automatic extension payment to the state of Illinois, the payment amount needs to be included on their Illinois tax return.
Which States does Illinois Have a Reciprocal Agreement with?
An Illinois resident who was employed in Iowa, Kentucky, Michigan, or Wisconsin, must file Form IL-1040 and include all compensation received from an employer in these states.
Illinois - Military Retirement/Pension income
Illinois allows a subtraction of military retirement income.
Illinois Validation Error for Missing EIN or self-employment indicator
State Validation Errors Illinois - Preparer firm EIN is required unless self-employment indicator is marked.
Illinois Military Pay and Spouse Income
Resident - Active duty military pay is exempt from income tax in Illinois.
Where do I make an Automatic Extension of Time to File Payment for Illinois?
Illinois allows an automatic extension to October 15 without filing a form.
Where Do I Set Up Estimated Payments for Illinois?
Where do I make an Automatic Extension of Time to File Payment for Illinois?
Where Do I Enter Contributions to the Illinois 529 College Savings Program?
If a taxpayer contributes to an Illinois 529 College Savings Program, a portion of the contribution may be eligible to be subtracted from income on the Illinois return.