File Form 720 for the third quarter. Calendar Add to Calendar Add to Timely Calendar Add to Google Add to Outlook Add to Apple Calendar Add to other calendar Export to XML When: October 31, 2013 all-day 2013-10-31T00:00:00-07:00 2013-11-01T00:00:00-07:00 ← Employers: Deposit payroll tax for May if the monthly deposit rule applies.Deposit payroll tax for payments on Jan 4- 6 if the semiweekly deposit rule applies. →