APR and APY – are they new texting acronyms? IDK, you say – or rather, you text? (For the benefit of the textually-challenged, IDK means “I don’t know.”) If you think they are texting acronyms, or just “DK” what they are, it’s time to learn.
APR and APY are financial acronyms, short for Annual Percentage Rate and Annual Percentage Yield, respectively. Both are interest rates, but they have a significant difference. APR does not address how interest is compounded – the default is the interest that you earn if you are depositing money, or pay if you are borrowing it – in one year. APY takes into account how often the interest is compounded.
If interest is compounded once per year, there is no difference between APR and APY – interest is added all at one time. However, let’s assume an interest rate is compounded monthly. In that case, the interest payment is divided up into twelve equal increments.
If you are earning interest on a deposit, that adds a sma…