January 24

• Start of tax season 1 st day to submit returns to The IRS

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April 18

• The following are due: Personal tax returns and 1st quarter 1040 estimates.

April

• Corporate tax 1120ES on profits for the 1st quarter are due.

• 1120 corporate tax returns are

June 

• 2nd quarter 1040 estimates are due.

• Corporate tax 1120ES on profits for the 2nd quarter are due.

June 

• Payroll tax returns for the 2nd quarter are due.