FILING and REMITTANCE Calendar When: May 10, 2018 all-day 2018-05-10T00:00:00+08:00 2018-05-11T00:00:00+08:00 FILING REMITTANCE LAST DAY OF FILING and REMITTANCE BIR Forms No. 1601C, 1601E, 1601F, 1602 and 1606 for April 2018 (non-eFPS filers) Posted in .