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Deadlines and Due Dates

30 Nov 2018


Estimated Payments Due:
  • 1st Quarter: April 15th
  • 2nd Quarter: June 15th
  • 3rd Quarter: September 15th
  • 4th Quarter: January 15th
Income Tax Return Due:
  • April 15th (or first business day following the 15th if there is holiday or weekend)
  • October 15th, if you filed an extension before 4/15
IRA (Traditional and Roth) Deposits:
  • Due by April 15th for the previous year
SEP IRA Deposits (for self employed individuals):
  • Due date of the return including extensions


Corporate Forms 1120 and 1120S
  • March 15th
  • September 15th (with one 6 month extension)
Partnership Form 1065
  • March 15th
  • September 15th (with one 6 month extension)
Payroll Taxes:
  • 941 Deposit: Monthly depositors (if payroll tax is less than $50,000 per year) due the 15th of each month for prior month’s employment tax withholdings
Quarterly Payroll Reports:
  • 1st Quarter: April 30th
  • 2nd Quarter: July 31st
  • 3rd Quarter: October 31st
  • 4th Quarter: January 31st
MN Sales Tax Quarterly Filers:
  • 1st Quarter: April 20th
  • 2nd Quarter: July 20th
  • 3rd Quarter: October 20th
  • 4th Quarter: January 20th
  • Annual Filers: February 5th (if sales and use tax is less than $1200/year)

*All dates are subject to change due to holiday/weekends. If the due date falls on a holiday or weekend, it is almost always extended to the next normal business day.