When you perform a payment transaction, the debit would take place on the priority as per the grid provided below,
Scenario 1 – If you have sufficient balance in local currency (depending on country of transaction) then the transaction will be processed using the local currency balances.
Scenario 2 – If the local currency is part of the offered multiple currencies on the card but you do not have sufficient balance in the local currency, however if the you have sufficient balance (equivalent to local currency) in default currency (USD) then the transaction will be processed using the balances in the default currency. Value from the default currency will be converted to local currency using cross currency conversion rate decided by the Bank. This rate will be calculated with a markup on the IBR cross currency rate.
Scenario 3 – If the local currency is part of the offered multiple currencies on the card but you do not have sufficient balance in local currency as well as default currency (USD) however if the you have sufficient balance (equivalent to local currency) in any other currency then the transaction will be processed using the balances from the respective currency. The card will look for balances across all the currencies in following order of priority as decided by the Bank,
Scenario 4 – If you transact in currency which is not offered on the card, the transaction will be processed by debiting default currency (USD). Cross currency conversion would take place as per applicable rates. In case there is no sufficient balance in default currency then funds would be pulled from other currency with sufficient funds and converted to the default currency using Bank’s currency conversion rate. Partial transactions in different currencies are not allowed. If you do not have sufficient balance to process the transactions individually in any of the currencies available on your card, the transaction is declined even if the collective balances on the card across all currencies is sufficient to process the transaction.