APY Calculator

Calculate Annual Percentage Yield and compound interest earnings

Investment Details

Results

5.1%
Annual Percentage Yield (APY)
Final Balance$10,511.62

Total value after compound interest

Total Interest$511.62

Interest earned over the period

Effective Rate Increase0.1%

Additional yield from compound interest

Periodic Growth:

PeriodBalanceInterest
1$10,041.67$41.67

Understanding APY

What is APY?

Annual Percentage Yield (APY) is the effective annual rate of return taking into account the effect of compounding interest. Unlike simple interest, compound interest is calculated periodically and the accumulated interest earns interest over time.

Compounding Frequency

  • • Daily: 365 times per year
  • • Weekly: 52 times per year
  • • Monthly: 12 times per year
  • • Quarterly: 4 times per year
  • • Annually: Once per year

APY vs APR

APY Features

  • • Includes compound interest
  • • Higher than APR
  • • More accurate yield
  • • Used for savings

APR Features

  • • Simple interest only
  • • Lower than APY
  • • Doesn't show full cost
  • • Used for loans

Key Differences

  • • Compounding effect
  • • Calculation method
  • • Usage scenarios
  • • Disclosure requirements