Unfortunately, it’s a standard practice in the credit card industry that you can’t know either in advance. In fact, the vast majority of credit card companies won’t even allow you to request a specific credit limit. Since the underwriting guidelines are based on the issuing bank and the particular credit card, both determinations can only be made once you’ve submitted an application. The card issuer will establish both your interest rate and credit limit based on your credit score, income, the amount of debt you’re carrying, and other factors.