What is a Balance Subject to Interest Charge (BSIC)?

The amount owed by a cardholder that will be used to calculate the interest owed at the end of a credit card’s billing cycle. Balances subject to interest charges on a credit card are typically one of the following: purchases, balance transfers, or cash advances. Interest owed is calculated using the following formula:

BSIC  x  Daily Periodic Rate  x  Number of Days in Billing Cycle  =  Interest Owed