Tax Type	Form	Due
Individual Income 2020	Individual	4/15/2020
Individual Income 2021 Quarterly	IDI-20	1st Estimated Payment: 4/15/2021 2nd Estimated Payment: 6/15/2021 3rd Estimated Payment: 9/15/2021 4th Estimated Payment: 1/18/2022
Business Income 2020	Business	4/15/2021
Business Income 2021 Quarterly	BDI-20	1st Estimated Payment: 4/15/2021 2nd Estimated Payment: 6/15/2021 3rd Estimated Payment: 9/15/2021 4th Estimated Payment: 12/15/2021
Employer Withholding Quarterly	Q-#	Last day of the following month
Employer Withholding Monthly	M-#	15th day of the following month
Employer Withholding Annually	W-3	February 28