- 15th of every month: Prior month payroll tax deposit date (if you're on the monthly deposit system)
- January 15: Estimated taxes due
- January 31: Last day to distribute 1099s and W2s to people you paid during the prior year
- January 31: Payroll reports due for quarterly period ending 12/31
- February 1: Last day to send the government copies of your 1099s and W2s
- February 28: 1099-MISC (nonemployee compensation needs to be sent out)
- March 15: Calendar-year corporation tax due
- April 15: Deadline for Individual or Partnership Annual Tax return or deadline to file an extension
- April 15: Estimated taxes due
- April 30: Payroll reports for period ending 3/31 due
- June 15: Estimated taxes due
- July 31: Payroll reports for quarterly period ending 6/30 due
- September 15: Estimated taxes due
- October 31: Payroll reports for quarterly period ending 9/30 due