Hi - Airfares have complex taxation. They do have GST, but they also have a number of other taxes and charges, so the GST is not 10% of the total fare.
Is there a way of inputting the GST component from the airline’s tax invoice manually rather than having it automatically calculated?
You need to split the amount into GST and GST-free portions. So let’s say if airfare is $1,000 and $100 is GST-free, then you need to split the amount so only $900 is subject to GST 10% and remaining $100 is marked with GST-free tax code.