Question: how is apy calculated monthly?
Answer: A credit card company might charge 1% interest each month. ... The APY for a 1% rate of interest compounded monthly would be 12.68% [(1 + 0.01)^12 – 1 = 12.68%] a year. If you only carry a balance on your credit card for one month's period, you will be charged the equivalent yearly rate of 12%.