Profitability Index Calculator
The Profitability Index (PI) or profit investment ratio (PIR) is a widely used measure for evaluating viability and profitability of an investment project. It is calculated by dividing the present value of future cash flows by the initial amount invested. If the profitability index is greater than or equal to 1, it is termed a good and acceptable investment.
Profitability Index Formula & Example
This calculator uses the following formula to calculate the profitability index:
Profitability Index (PI) = Present Value of Future Cash Flows / Initial Investment
OR
PI = [ CF_{1} × (1 + r)^{ 1} + CF_{2} × (1 + r)^{ 2} + . . . + CF_{n} × (1 + r)^{ n} ] / CF_{0}
 Where,
 PI is the profitability index,
 CF is the cash flow for a period,
 r is the discount rate in decimal form,
 n is the number of periods (years),
 CF_{0} is the initial investment.
Example: Assume a project costs $10,000. It will generate cash flows of $2000, $3000, $4000 for the next 3 years. Calculate the profitability index if the discount rate is 10%.
Solution: Profitability Index = [ CF_{1} × (1 + r)^{ 1} + CF_{2} × (1 + r)^{ 2} + . . . + CF_{n} × (1 + r)^{ n} ] / CF_{0}
 CF_{0} = 10000,
 CF_{1} = 1000,
 CF_{2} = 2000,
 CF_{3} = 4000,
 n = 3,
 r = 10% , or 0.1 in decimal
In this example, the profitability index (PI) would be calculated as follows:
Profitability Index = [ 1000/(1.1)^{1} + 2000/(1.1)^{2} + 4000/(1.1)^{3} ] / 10000
= [ 909.09 + 1652.89 + 3005.26 ] / 10000
= [ 909.09 + 1652.89 + 3005.26 ] / 10000
= [ 5567.24 ] / 10000
The profitability index for this project is 0.5567
The project should be rejected since its PI is less than 1
What is Profitability Index Calculator
A Profitability Index Calculator, also known as a Profit Investment Ratio (PIR) Calculator or BenefitCost Ratio Calculator, is a tool used to evaluate the profitability of a business investment or project. It helps individuals and businesses assess the financial viability and potential return on investment (ROI) of a particular venture.
Here's how a typical Profitability Index Calculator works:

Initial Investment: You input the initial investment or cost associated with the project or investment. This represents the amount of money required to start or undertake the venture.

Cash Flows: You enter the expected cash flows generated by the project or investment over a specific period. Typically, these cash flows represent the net income or earnings from the venture.

Positive Cash Flows: Enter the expected cash inflows (earnings) generated by the project or investment. These can include revenue, savings, or any other financial benefits.

Negative Cash Flows: Enter the expected cash outflows (expenses) associated with the project or investment. These can include costs, maintenance expenses, or any other financial obligations.


Calculation: The Profitability Index Calculator calculates the profitability index by dividing the total present value of the expected cash flows by the initial investment.
Profitability Index = Present Value of Cash Flows / Initial Investment

Displaying the Result: The calculator displays the calculated profitability index, which represents the relative profitability or return on investment of the project or investment.
The profitability index is a ratio that helps in evaluating the financial attractiveness of an investment. A profitability index greater than 1 indicates a profitable investment, while a value less than 1 suggests an unprofitable investment. The higher the profitability index, the more financially attractive the investment is considered.
It's important to note that the profitability index does not provide an absolute measure of profitability or financial success. It is a relative indicator and should be used in conjunction with other financial analysis methods and factors.
When using a Profitability Index Calculator, it's essential to consider the time value of money and discounting. Cash flows occurring in different periods are often discounted to their present value to reflect the time value of money. The calculator may incorporate discount rates or provide options to input discount factors to account for this.
Using a Profitability Index Calculator can assist individuals and businesses in evaluating the financial viability and profitability of an investment or project. However, it's important to consider other factors such as risk assessment, market conditions, competition, and potential uncertainties to make an informed decision.
For a comprehensive financial analysis, it's advisable to consult with financial professionals or experts who can provide insights and guidance based on your specific investment or project.
Profitability Index Calculator Example
Certainly! Here's an example of a Profitability Index Calculator that utilizes a table to calculate the profitability index for multiple investment projects with different cash flows:
Project  Initial Investment  Cash Flow Year 1  Cash Flow Year 2  Cash Flow Year 3  Cash Flow Year 4  Cash Flow Year 5 

A  $100,000  $20,000  $30,000  $40,000  $50,000  $60,000 
B  $200,000  $50,000  $40,000  $30,000  $20,000  $10,000 
C  $150,000  $15,000  $25,000  $35,000  $45,000  $60,000 
In this example, we have three different investment projects (A, B, C) with their respective initial investments and cash flows over a period of five years. The profitability index is calculated by dividing the present value of cash inflows by the initial investment.
To calculate the profitability index, you would need to discount each cash flow to its present value using an appropriate discount rate. Once you have the present value of all cash inflows, you can sum them up and divide by the initial investment.
For instance, let's say the discount rate is 10%. To calculate the profitability index for Project A:

Calculate the present value of cash inflows: PV Year 1 = $20,000 / (1 + 0.1)^1 PV Year 2 = $30,000 / (1 + 0.1)^2 PV Year 3 = $40,000 / (1 + 0.1)^3 PV Year 4 = $50,000 / (1 + 0.1)^4 PV Year 5 = $60,000 / (1 + 0.1)^5

Sum up the present values of cash inflows: PV Cash Inflows = PV Year 1 + PV Year 2 + PV Year 3 + PV Year 4 + PV Year 5

Calculate the Profitability Index: Profitability Index = PV Cash Inflows / Initial Investment
Similarly, you can calculate the profitability index for the other investment projects in the table by discounting their cash flows and calculating the present value of cash inflows.
Please note that this is just an example, and the actual calculation of profitability index may involve different discount rates, cash flow patterns, and consideration of other factors such as risk and time value of money.