Tested tool guide
Tested browser tools
Checked August 16, 2026
What Investment Return Calculator does, with a checked example
An investment can show a substantial dollar gain while producing a modest yearly return. This calculator compares the starting amount with ending wealth, accounts for reinvested dividends and deducted fees, and reports both the full holding-period return and its compounded annual equivalent. It can also restate the annual result in purchasing-power terms using an inflation rate. The frequent mistake is treating annualized return as total return divided by years. Annualization instead finds the constant yearly rate that compounds to the final result.
Worked example
A concrete input and expected output from the current implementation.
Input
Initial investment: $1,000
Ending value: $1,210
Reinvested dividends: $0
Fees: $0
Holding period: 2 years
Annual inflation rate: 10%
->
Expected output
Total return: 21.00%
Annualized return: 10.00%
Inflation-adjusted annualized return: 0.00%
$1,210 divided by $1,000 is 1.21, so the two-year return is 21%. The square root of 1.21 is 1.10, giving 10% annually; adjusting that 10% nominal rate for 10% annual inflation gives (1.10 / 1.10) - 1 = 0%.