e-FILING Calendar When: April 23, 2018 all-day 2018-04-23T00:00:00+08:00 2018-04-24T00:00:00+08:00 e-FILING LAST DAY OF e-FILING BIR Forms No. 2550M and 2551M for March 2018 (eFPS filers under Group C) Posted in .