If you are making a Term Deposits, often called Certificate of Deposit (CD) at a bank, you can use this online tool to calculate the Compound Interest at Maturity from a given interest rate and a compounding frequency. Interest rate can be given as APY (Annual Percentage Yield) or APR (Annual Percentage Rate).

Interest and other information calculated by FYIcenter.com:

Interest at maturity: $12.37
APR (Annual Percentage Rate): 4.9091%
APY (Annual Percentage Yield): 5.0000%
Compounding frequency: Annually
Compounding periods: 1
Deposit term: 3 month(s) ~ 92 day(s), 0.25 year(s)

Return of investment:
   Deposit date: 2026-05-21
   Maurity date: 2026-08-21
   Deposit amount: $1,000.00
   Interest at maturity: $12.37
   Value at maturity: $1,012.37

Interest distribution: Monthly Daily
      Date       Int    Acc Int   Total Val
----------  --------  ---------  ----------
2026-05-21      0.00       0.00    1,000.00
2026-06-21      4.15       4.15    1,004.15
2026-07-21      4.03       8.19    1,008.19
2026-08-21      4.19      12.37    1,012.37
----------  --------  ---------  ----------
      Date       Int    Acc Int   Total Val
Interest distribution: Monthly Daily

The following formulas are used in the above calculations:

$\mathrm{Interest}=\mathrm{Deposit}\times ({(1+\mathrm{APY})}^{\mathrm{Years}}-1)$
$\mathrm{APY}={(1+{\displaystyle \frac{\mathrm{APR}}{N}})}^N-1$
$N=\text{Number of compounding periods in a year}$

References:

• "Compound Interest Formula Derivations" by Rod Pierce.

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