All merchant fees and charges are subject to GST unless your Tax Invoice indicates otherwise.

Is there GST on card payment fees?

Bank fees: Generally, annual fees, monthly fees and loan establishment fees are input-taxed, and therefore, there is no GST to claim. ... Interest: Interest paid on loan or chattel mortgage repayments or credit card payments does not incur GST, and cannot be claimed.

Is there GST on merchant charges?

The fee will have the same GST treatment as those goods or services being supplied. If the goods or services are taxable, output tax must be returned on the amount of the fee.