#GST 24
All GST registered Companies have to file their GST03 form to the Custom based on the time frame below.
source from: http://gst.customs.gov.my/en/ib/Pages/ib_ftr.aspx
Basically there are 2 ways to file the forms:
1) Online: Go to TAP (https://gst.customs.gov.my/TAP/_/) and login using the Company ID
2) Offline: Manually submit the GST 03 Form to the Custom before the deadline