Enter your initial deposit, APR (Annual Percentage Rate), compounding frequency, time period, and optional monthly deposits to calculate your APY (Annual Percentage Yield), total interest earned, and final balance. See exactly how compounding frequency affects your real returns over time.
APY (Annual Percentage Yield)
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Final Balance
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Total Interest Earned
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Total Deposits
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APY stands for Annual Percentage Yield. It represents the real rate of return earned on an investment or deposit account in one year, taking into account the effect of compounding interest. Unlike APR, APY reflects how often interest is compounded, giving a more accurate picture of your actual earnings.
APY is calculated using the formula: APY = (1 + r/n)ⁿ − 1, where r is the nominal annual interest rate (APR) and n is the number of compounding periods per year. For example, a 5% APR compounded monthly gives an APY of approximately 5.116%. Our calculator handles this automatically.
APR (Annual Percentage Rate) is the simple nominal interest rate without accounting for compounding. APY (Annual Percentage Yield) includes the effect of compounding, so it is always equal to or higher than the APR. The more frequently interest compounds, the bigger the gap between APR and APY.
APY is expressed as a yearly rate, but it accounts for how often compounding occurs throughout the year. Whether your account compounds daily, monthly, or quarterly, the APY figure standardizes these differences into a single annual number for easy comparison.
It depends on the APY and compounding frequency. At a 5% APY compounded monthly, $10,000 would earn approximately $511.62 in one year, resulting in a final balance of $10,511.62. Use the calculator above with your actual rate and frequency for a precise answer.
A good APY varies with market conditions. High-yield savings accounts and online banks often offer APYs ranging from 4% to 5% or more in high-rate environments, while traditional savings accounts may offer under 1%. Comparing APYs is the best way to find the most profitable account.
In a savings account, APY tells you how much interest you will actually earn over a year on your deposited funds, accounting for compounding. It is the key figure banks advertise because it reflects the true growth of your money, making it easier to compare accounts from different institutions.
Yes, though the impact depends on the interest rate. At higher rates and over longer time periods, daily compounding can yield noticeably more than yearly compounding. For a $10,000 deposit at 5% APR over 10 years, daily compounding produces a meaningfully higher balance than annual compounding.