Introductory interest rate offered on your new card? Number of months introductory rate is active is the amount of time (in months) that the balance transfer will be in effect. For example a credit card offer has a 0% Intro APR for 12 months. You would enter a value of 12 in this field. (Be sure you enter the number of months ONLY on the new credit card here) >> Back to Calculator >> Back to Main Index