Once you have decided on the card you want, you can apply online by logging onto SBI Bank website or by visiting the nearest SBI bank branch and submitting the application and required documentation. Make sure you qualify for SBI credit card before applying by using their Eligibility calculator. You need to be a salaried or self-employed professional, and be able to fulfil the age requirements. In order to know the salary requirements, it is advisable to directly contact the bank.