January 15th – Q4 Estimated payments from the previous year
January 31st – W2s & 1099-Misc’s to be issued
March 15th – Partnerships & S corps
April 15th – Individuals, C Corps, Extensions, FinCen 114 (FBAR), and Q1 Estimated payments
June 15th – Q2 Estimated payments
September 15th – C Corps, Partnerships, and S Corps on extension & Q3 Estimated payments
October 15th – Individuals on Extension