ANNUAL PERCENTAGE YIELD (APY)
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The effective annual rate of return accounting for compounding.
Summary
Annual Percentage Yield (APY) is the actual rate of return you earn on an investment or savings account over one year, including the effect of compound interest. Unlike simple interest rates, APY shows you exactly how much your money will grow when interest is compounded (added to your principal) multiple times throughout the year. For example, if you have a savings account with 5% interest compounded monthly, your APY will be slightly higher than 5% because you earn interest on your interest.
Usage Context
Understanding APY is crucial when comparing investment options, savings accounts, or certificates of deposit. It's essential for making informed financial decisions and understanding the true earning potential of different financial products.
Common Confusions
- Confusing APY with APR - APY is for earnings/savings, APR is for borrowing costs
- Not understanding that APY already includes compounding effects
- Thinking APY and nominal interest rate are the same thing
- Assuming more frequent compounding always means significantly higher returns
