e-FILING Calendar When: September 24, 2018 all-day 2018-09-24T00:00:00+08:00 2018-09-25T00:00:00+08:00 e-FILING LAST DAY OF e-FILING BIR Forms No. 2550M and 2551M for August 2018 (eFPS filers under Group B) Posted in .