`"IRR" = (EP - BP + DIV)/(BP)`

Enter a value for all fields

The Investment Return Rate calculator computes the percent investment return based on the beginning and end prices of an equity and dividends paid.

INSTRUCTIONS: Choose units and enter the following:

• (BP) Beginning Stock Price
• (EP) End Stock Price
• (DIV) Dividends Paid

Investment Return Rate (IRR): The calculator returns the return rate as a percentage.

The Math / Science

The formula for the Investment Return Rate is:

IRR = (EP - BP + DIV)/(BP)

where:

• IRR = Investment Return Rate
• BP = Beginning Stock Price
• EP = End Stock Price
• DIV = Dividends Paid

---

Basic Investor Calculators

• Black-Scholes Equation: Compute the Call and Put Option based on the Black-Scholes equation and the stock or spot price, strike price, number of years to maturity, percent volatility and the risk-free rate.
• 30 Day Yield Equation: Computes the SEC's 30 day yield function for bond funds based on the income in the prior 30 days, accrued expenses in the prior 30 days, outstanding shares and max price per share.
• Investment Return Rate: Computes the return rate based on the beginning and end price and dividends paid.
• Inflation Adjusted Return: Computes the return rate based on the Inflation Rate and the Investment Return.
• Present Value- computes the present value of a fixed annuity.
• Future Value- computes the future value of a fixed annuity.
• Interest Rate for Future Value - computes the annual fixed interest rate required for a present value to accrue to the future value over a number of periods.
• Number of Periods Required - computes the number of periods required to achieve a future value from a present value at a fixed annual interest rate.
• Precious Metal Value - computes the current market value of gold, platinum, silver and palladium based on bullion weight and purity.
• Credit Card Equation - computes the time required to payoff a debt based on an interest rate, initial balance and monthly payment.
• Currency Conversion - computes the current value of a currency amount (e.g., $2,000 US dollars) in Euros, Great Britain Pounds, Canadian Dollars, Yuan, Yen, Rubbles, Swiss Francs, Australian Dollars, South African Rands, Brazial Reals, Mexican Pesos, Indian Rupees and U.S. dollars.