As of 2015, customers can pay for their Shell credit card bill online by registering for an online account that corresponds to the type of card they have. A Shell credit card online account is registered on a Citigroup website and can also be used to view recent transactions.
Shell credit card holders can also choose to pay for their bill through mail payments. This payment method only applies for Shell MasterCard credit cards and can only be done by checks sent to the Bankcard Processing Center using the following address: P.O. Box 6401 The Lakes, Nevada. Shell customers can possess any one of the Shell Credit Cards, Shell MasterCard credit cards or Shell Fleet credit cards.