Using your Credit Card to transact in a foreign currency will attract a forex premium charge. This along with a GST is added to the transaction amount. Here’s how it works:

• Your transaction amount is converted to Indian Rupees (INR) on the settlement date, which could be different from the date of the transaction.
• If the foreign transaction is not done in USD (US Dollars), the amount will first be converted to USD, and then the USD amount will be converted to INR as per the rate provided by VISA. On this amount, a forex markup fee of 1% will be levied, and GST will be applicable on the markup fee. 
• If this transaction is refunded or reversed, both the markup fee and GST charges will be refunded.
• A forex markup fee will also be levied in case of transactions done at merchants located in India but registered overseas.