====== Tax Calendar ====== From: http://www.tax.gov/calendar/ Tax Calendar - SB/SE www.tax.gov/calendar/ Tax Calendar for Businesses & Self-Employed ... EFTPS users: Payments must be scheduled by 8 p.m. ET at least one calendar day before the tax due date. ... Fr, 15, Deposit payroll tax for Dec 2015 if the monthly deposit rule applies.