With this business credit card that's also a charge card, you won't have to keep track of fluctuating interest rates because you need to pay the balance in full each month. (thedigeratilife.com)
Phil shouldn't worry about fluctuating interest rates on Candace's line of credit. (moneysense.ca)
However, you can utilize the spot rate to determine market value of a purchase, as this metric takes into account fluctuating interest rates. (investopedia.com)