We shall use a sample dataset as an example to show. The information below shows the monthly interest rate of a private bank during the period of the last ten years.
Before starting the article, let’s have an overview of the final output you are going to get.
Download Practice Workbook
You can download and practice the dataset we used to prepare this article.
2 Methods to Convert Monthly Interest Rate to Annual in Excel
Let’s assume we have a dataset, namely “Monthly Interest Rate of J.P. MORGAN PRIVATE BANK in last 10 years”. You can use any dataset suitable for you.
Here, we have used the Microsoft Excel 365 version; you may use any other version at your convenience.
1. Convert Simple Monthly Interest Rate to Annual by Simple Multiplication
In this section, we are going to show you how to convert monthly interest rate to annual interest rate in case of simple interest. Here, we only need to use the multiplication operator. No additional functions are needed.
- Firstly, go to cell E5 and type the following formula:
NOTE: Here, the “*” sign indicates the multiplication function.
- Next, press ENTER to get the result.
- Finally, place the cursor at the bottom right corner of cell E5, left-click on it and drag the cursor down to cell E14. You will get the calculated result for the rest of the years too.
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2. Convert Compound Monthly Interest Rate to Annual with Help of POWER
At this point, you are going to learn to carry out the same task in case of compound interest. Here, you will need to use summation, subtraction, multiplication & division, operators, parenthesis, and the function named POWER.
- First of all, move to cell E5 and insert the following formula:
- D5/100 → becomes
0.11/100 → 0.0011
- 1+D5/100 → becomes
1+0.0011 → 1.0011
- (POWER((1+D5/100),12) → becomes
(1.0011)12 → 1.0133
- (POWER((1+D5/100),12)-1) → becomes
1.0133 – 1 → 0.0133
- (POWER((1+D5/100),12)-1)*100 → becomes
0.0133*100 → 1.33
- Afterward, press ENTER to get the expected result.
- Lastly, repeat the task of step 3 from method 1 to obtain the rest of the results.
Things to Remember
- You always have to be very careful regarding the interest period conversion. (Whether simple or compound)
- Carefully use parentheses where they are needed in case of a relatively large formula.
Now, you have the ability to Convert the Monthly Interest Rate to Annual Interest Rate in Excel for both simple and compound interest. Use them whenever you need and let us know if you have any better or additional way to carry out the task. You can drop any comment in the comment section below if you have any queries.
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