Typically, the minimum payment is a percentage of your total current balance, plus any interest you owe. So if you owe $2,000, your minimum payment might be $40. There is usually a dollar amount for your minimum monthly payment also, so it may be expressed as something like, "$35 or 2% of your balance plus fees, whichever is greater." Each credit card issuer calculates your minimum monthly payment differently. Consult your Discover statement and the terms of your account for information on how your Discover card minimum monthly payment is calculated.