Below is the conclusion, at least for now :
GST on credit card charges charges will not be automated.
There are 2 ways to record GST on credit card charges :
Option 1 : continue to use Card Payment Config to auto calculate credit card charges
...
- Create PV just for the GST on cc charges.
- Debit : new_gst_for_cc_charges_gl
- Credit : cashbook_gl
- Do GST Adjustment
- Debit : gst_Input
- CreditCredit : new_gst_for_cc_charges_gl
...
- Create PV just for the CC charges + GST
- Debit : credit_card_charges_gl (and specify Input Tax for this GL)
- CreditCredit : cashbook_gl