TX Franchise Tax due May 29, 2013 by admin 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: May 15, 2014 all-day 2014-05-15T00:00:00+00:00 2014-05-16T00:00:00+00:00 Tax Dates Last day for business entities to file franchise tax return unless extension is requested.