e-FILING Calendar When: June 14, 2018 all-day 2018-06-14T00:00:00+08:00 2018-06-15T00:00:00+08:00 e-FILING FILING LAST DAY OF e-FILING BIR Forms No. 1601C, 1601E, 1601F and 1602 for May 2018 (eFPS filers under Group B) Posted in .