e-FILING Calendar When: April 21, 2018 all-day 2018-04-21T00:00:00+08:00 2018-04-22T00:00:00+08:00 e-FILING LAST DAY OF e-FILING BIR Forms No. 2550M and 2551M for March 2018 (eFPS filers under Group E) Posted in .