File Form 5500 if you timely requested an extension on Form 5558. 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 15, 2013 all-day 2013-10-15T00:00:00-07:00 2013-10-16T00:00:00-07:00 ← Deposit payroll tax for payments on Jan 1-3 if the semiweekly deposit rule applies.Deposit payroll tax for payments on Jul 10-12 if the semiweekly deposit rule applies. →