How to Calculate IRR in Financial Calculator (Updated: Sep 2023)

The Internal Rate of Return (IRR) is a way to measure the performance of an investment over some time. It estimates how much money was invested and how much that money has been paid back after it starts making money.

In this article, I will explain How to Calculate IRR in Financial Calculator and give you instructions on each way.

How to Calculate IRR in Financial Calculator

If you’re a financial analyst or investor, you’re probably familiar with the concept of IRR or internal rate of return. This is a metric that can measure the profitability of an investment, and it’s essential to know how to calculate it.

Fortunately, calculating IRR is relatively easy if you have a good financial calculator.

Here’s a step-by-step guide on how to do it:

  1. Enter the cash flows for the investment into your calculator. These cash flows should include all money paid out (e.g., initial investment) and received (e.g., from the sale of the investment).
  2. Set the calculator to IRR mode. On most calculators, this can be done by pressing a button labeled ‘IRR’ or ‘I/YR.’
  3. Enter the required interest rate or return into the calculator. This is typically expressed as a percentage (e.g., 10%).
  4. Solve for IRR by pressing the ‘calculate’ or ‘equals’ button on your calculator.

And that’s it! You’ve now successfully calculated the IRR for your investment.

Working with Degree Units

You can use a financial calculator to calculate the internal rate of return (IRR) for an investment.

However, before you can do this, you need to understand how to work with degree units on the calculator. Otherwise, you’ll end up with many numbers that don’t make any sense!

Let’s say that you’re considering investing in a new project. The project will last for ten years, and it is expected to generate the following cash flows:

Year 1: $1,000
Year 2: $2,000
Year 3: $3,000
Year 4: $4,000
Year 5: $5,000
At the end of Year 5, you will sell the project for $6,000.

To calculate the IRR of this investment using a financial calculator, you need to first convert the cash flows into degree units.

To do this, you take the present value of each cash flow and divide it by the number of years until that cash flow occurs.

So, for example, the current value of Year 1’s cash flow ($1,000) is divided by 1 to get the 1-degree unit. Likewise, the current value of

Using an Interest Rate Calculator

There is a specific one for almost every purpose when it comes to financial calculators.

For people trying to save money and make wise investments, an interest rate calculator can be a powerful tool.

This calculator allows users to input different variables and see how various factors will affect their overall interest rate.

For example, someone may want to know how much they would need to save to earn a certain amount of interest.

By inputting the desired amount of interest and the current savings account balance, the calculator can show how much would need to be saved to reach the goal. Additionally, the calculator can be used to compare different investment options.

The calculator can show which one would offer the highest return by inputting the IRR (internal rate of return) for each investment.

This information can be beneficial when making decisions about where to invest money. Overall, an interest rate calculator can be a valuable tool for anyone who wants to make intelligent financial decisions.

Practical Tip #1: How to Calculate Average Monthly Irregular Pension (Required for Yahoo)

The Internal Rate of Return (IRR) is a valuable tool that can be used to compare different investment opportunities. It considers the time value of money and allows you to see which investment will give you the highest return.

Unfortunately, IRR can be a bit tricky to calculate. However, a relatively simple way is to figure it out on a financial calculator.

First, you need to input the following values:

N – The number of periods (years)
I/Y – The interest rate per period
PV – The present value of the investment
FV – The future value of the investment

Then, you press the IRR button on the calculator. This will give you the Internal Rate of Return for the investment.

For example, let’s say you are considering two different investments. Investment A has a PV of $1,000 and an FV of $2,000 after 3 years. Investment B has a PV of $2,000 and an FV of $4,000 after 4 years. Which one is the better investment?

To calculate the IRR, we input the values into our financial calculator:

N I / Y ( 1 + I / Y ) n = 2 4 16 % 4 % IRR ≈ 0 . 2516The answer is 25.16%. After 3 years, your $2,000 investment will be worth approximately $2500.

The investment would yield an investor a 25.16% return over the 3 years.

Investment B has an IRR of 15.58%, which means an investor would need to wait for that fourth year for Investment B to grow to $4,000.

If you’re investing for the short-term, Investment A will give you a better return early on, but if you’re looking for growth over a longer period, then go with Investment B.

Let’s see how the internal rate of return handles sums (positive and negative)

I want to prove that $3 is the IRR for $100 six years at 10% per year:1+0.1(1+0.09(1+0.09(1+0.09(1+0.09(11^6)))=$100=-$100=-$100=-$100=-$.15=3

Result: 3 is $100 IRR at 10% per year or said otherwise it is the average interest rate you need to earn on your investment to break even on a six year initial investment of $100.

But how can we find the exact $100 interest rate at a yearly compound?3^(1/6)^(1/10)=3^0.8=3^0$I wants to prove that 11 is $75 IRR at 8% per year:1+0. 1(1+0.08(1+0.08(1+0.08(1+0.08(11^6)))=$75=-$75=-$.15=11

Result: 11 is $75 IRR at 8% per year or said otherwise it is the average interest rate you need to earn on your investment to break even on a 6 year initial investment of $100.

Practical Tip #2: Understanding the Difference between Amortization and Annuitization

Amortization is the gradual reduction of a debt over a set period. The payments are usually equal, and the entire loan is paid off by the end of the loan term.

Annuitization is different in that the payments are not equal. Instead, the payment amount is calculated so that the loan will be paid off by the end of the loan term.

To calculate IRR on a financial calculator, you need to know the present value, the periodic payment amount, and the number of periods.

Here’s how to do it:

1) Enter the present value of the loan. This is the amount of money you borrowed.
2) Enter the periodic payment amount. This is the amount you will pay each period, and it should be equal to or greater than the interest charges for that period.
3) Enter the number of periods. This is the number of payments you will make over the life of the loan.
4) Press the ‘irr’ button on your calculator. The irr is displayed as a percentage.

For example, if you borrowed $100,000 at an interest rate of 5% and For example, if you borrowed $100,000 at an interest rate of 5% and make payments every month, each for $1,444.07, your irr is about 5% per month.

It can also be expressed as 26 over 100 monthly*5%, where the asterisk means “times” (26 times 5% =130%), meaning that for every $100 loaned, the borrower would pay back about $130 each month (well, actually it’s $1 less than 130 so you’d owe an amount of $129.92).

The 26 is because each of the 26 monthly payments is $1,444.07. Other Calculations The Isr is a similar calculation to the irr. Instead of dividing by the number of payments, you divide by how much extra you want to pay on an ongoing basis.

The lower this figure, the happier your banker will be. An 8% annual interest loan may have an irr/isr of 40%.

Still, if you make payments equivalent to 5% PCM, then every month, you’ll be paying 45% of the original amount you borrowed, not 40%.


After reading this article, you should now understand how to calculate IRR on a financial calculator. While the process may seem daunting at first, it will become second nature with a bit of practice. So get out there and start putting your new skills to work!

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Hi, this is James. I'm a professional Finance Lecturer who finished college at Santa Clara University. I’m here to help you choose the perfect calculator for your financial needs. 

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