Excel allows a user to get a modified internal rate of return of an investment using the MIRR function. This function includes a discount rate and reinvestment rate in the calculation. This step by step tutorial will assist all levels of Excel users in finding a modified internal rate of return in Excel
Figure 1. The result of the MIRR function
Syntax of the MIRR Formula
The generic formula for the MIRR function is:
=MIRR (values, [guess])
The parameter of the MIRR function is:
- values – a range of cells containing values, including initial investment and incomes. The investment must have negative sign, as it is a cost
- finance_rate – a discount rate of the investment returns
- reinvest_rate – an interest rate for reinvested returns.
Setting up Our Data for the MIRR Function
Let’s look at the structure of the data we will use. In column B (“Amount”), we have values including initial investment and yearly incomes. In column C (“Description”) we have description of every amount. In the cell F2, we have finance rate, while in the cell F3 there is the reinvestment rate. Finally, we want to get the MIRR in F4.
Figure 2. Data that we will use in the MIRR example
Get a MIRR of Values Using the MIRR Function
In our example, we want to get the MIRR of the values in the range B3:B10. The finance rate is 10% (F2) and the reinvestment rate is 12% (F3). The result will be in the cell F4.
The formula looks like:
=MIRR(B3:B10, F2, F3)
The parameter values is the range B3:B10. The finance_rate is in F2, while the reinvest_rate is in F3.
To apply the MIRR function, we need to follow these steps:
- Select cell F4 and click on it
- Insert the formula:
=MIRR(B3:B10, F2, F3)
- Press enter.
Figure 3. Using the MIRR function to get the modified internal rate of the investment
Finally, the result in the cell F4 is 10%, which is the modified internal rate of the investment.
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