Partnerships: File Form 1065 if you timely requested a 5-month extension. 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: September 16, 2013 all-day 2013-09-16T00:00:00-07:00 2013-09-17T00:00:00-07:00 ← File Form 730 and pay the tax on wagers accepted during Dec 2013.Deposit FUTA owed through Sep if more than $500. →