What are estimated payments and how do I make them for individual income tax?

You must make estimated income tax payments if you reasonably expect your tax liability to exceed $500 after subtracting your Illinois withholding, pass-through withholding, and tax credits for

You are likely to meet this requirement if your income is either fully or partially exempt from Illinois withholding. If you plan to file a joint income tax return, you must figure your estimated tax on the basis of your joint income. For more information, refer to Form IL-1040-ES, Estimated Income Tax Payments for Individuals.

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