If you make estimated tax payments to the state of Illinois, you are required to make the first payment by April 15, 2020. Another important fact: the 2nd quarter federal payment is due before the 1st quarter.
Here are the due dates as they stand now.
Estimated Tax Payment Due Dates
Illinois
- 1st Quarter – April 15th
- 2nd Quarter June 15th
- 3rd Quarter September 15th
- 4th Quarter January 15th
Federal
- 1st Quarter – July 15th
- 2nd Quarter June 15th
- 3rd Quarter September 15th
- 4th Quarter January 15th
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