# Loan Amortization Schedule with Variable Interest Rate in Excel

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A loan amortization schedule can be prepared using one of the two ways. The first one is with a fixed interest rate and the second one is a variable interest rate. In this article, you will learn to prepare a loan amortization schedule with a variable interest rate in Excel.

## What Is a Loan Amortization Schedule?

A Loan Amortization Schedule is a table of period payments against the loan. In the table, the total number of periods to pay back the loan, the remaining balance to pay, how much money you are paying for the interest, and the original amount all are stated.

## How to Prepare a Loan Amortization Schedule with Variable Interest Rate in Excel

### Steps to Prepare a Loan Amortization Schedule with Variable Interest Rate in Excel

I will show you to prepare a loan amortization schedule based on the following data.

Total Loan Balance = \$50,000.

The number of Years = 2.

Loan Payment Frequency per Year = 12.

Total Number of Payments Against the Loan = (The number of Years x Loan Payment Frequency per Year) = 2 x 12 = 24.

Thus, in the Period column, we have taken a serial number from 1 to 24. #### Step-1: Calculate the Payment Amount, PMT

In the PMT column, we will calculate the amount of loan payment per month. For that, we will use the PMT function.

Now follow the steps below to calculate the PMT.

❶ To begin with, select cell C10.

❷ Now insert the following formula:

`=-PMT(G10/\$D\$5,COUNT(B10:\$B\$33),F9)`

In this formula:

• G10 refers to the annual interest rate in the AIR
• \$D\$5 refers to the Periods per Year.
• COUNT(B10:\$B\$33) returns the remains number of payments against the loan.
• F9 refers to the total loan balance remaining.
• -PMT(G10/\$D\$5,COUNT(B10:\$B\$33),F9) calculates the payment amount. Originally the function returns a negative value. Thus the minus sign (-) before the function will return a positive value.

❸ Finally hit the ENTER button to execute the formula. #### Step-2: Calculate the Amount of Interest Paid

The payment amount is used to pay both the interests and the principal. But to calculate the amount of interest, follow the steps below:

❶ Select cell D10 first.

❷ Then insert the following formula in cell D10:

`=F9*G10/\$D\$5`

Here,

• F9 is the remains balance to pay back.
• G10 is the annual interest rate.
• \$D\$5 refers to the Periods per Year.

❸ Finally hit the ENTER button to get the value. #### Step-3: Calculate the Amount of Principal Paid

To calculate the amount of principal paid,

❶ Select cell E10 first.

❷ Then insert the following formula:

`=C10-D10`

Here,

• C10 refers to the PMT.
• D10 refers to the amount of interest paid.

❸ After that hit the ENTER button. Read More: How to Use Formula for Mortgage Principal and Interest in Excel

#### Step-4: Figure out the Remaining Original Balance Considering the Lump Sum End Payment

Now it’s time to figure out the remaining original balance.

Sometimes the loan borrowers want to pay back all the money or the bigger portion of the money. In that case, the lump sum end payment should also be considered.

Thus, you can calculate the remaining original balance considering the lump sum end payment using the following steps:

❶ First, select the cell F10.

❷ Then insert the following formula:

`=F9-E10-H10`

Here,

• F9 refers to the previous value of remains balance to pay back.
• E10 is the principal paid back amount.
• H10 is the lump sum end payment amount.

❸ After that hit the ENTER button. ## Things to Remember

• To make a loan amortization schedule just change the values such as the Original Balance, Number of Years, Annual Interest Rate (AIR), and Lump Sum.
• Adjust the Period according to the Number of Years.

## Conclusion

To sum up, we have discussed the procedure to prepare a loan amortization schedule with a variable interest rate in Excel. You are recommended to download the practice workbook attached along with this article and practice all the methods with that. And don’t hesitate to ask any questions in the comment section below. We will try to respond to all the relevant queries asap. And please visit our website Exceldemy to explore more. #### Mrinmoy Roy

Hi! I'm Mrinmoy Roy. I'm an Excel and VBA content developer. I write blogs relating to Microsoft Excel on Exceldemy.com. I've completed my graduation in Electronics and Communication Engineering from Khulna University of Engineering & Technology. I've expertise in Excel functions, formulas, Pivot Table, Power Query, Visual Basic, etc. I write blogs to lessen people's hassles while working on Microsoft Excel.

1. Reply • Reply Hello Mr. Fazal,
You can download the attached Excel file and use that as a template.
All you need to do is input the number of years, periods per year, and balance. All the columns have their corresponding formula applied. As you provide the required information, Excel will automatically calculate the Loan Amortization Schedule for you.
Last but not the least, you have to update the variable annual interest rate (AIR) manually. If you have any lump sum amount in your consideration don’t forget to update that too!
Regards!

2. Reply Can be possible client wise auto update loan amotozation table?
Also if possible interest rate change so auto update automatic in excel
Extra Payments means (Start at Payment No,Extra Payment,Payment Interval,Extra Annual Payment,Payment,Total Extra Payments) Additional Payment already showing in your video ,Variable or Fixed Rate ,Impact of interest rate HIKE on your loan EMI & repayment schedule & Impact of interest rate CUT on your loan EMI & repayment schedule ? how to create in excel & Suppose provide only interest

• Reply Mr. Bhavnesh
Creation of a Mortgage Calculator with Taxes and Insurance in Excel
For further queries, please email us at [email protected].

3. Reply Rosemarie Linfoot Feb 14, 2023 at 10:21 AM

Thank you very much for this excellent tutorial. I have been able to follow it without any problems at all. However, I need a variation to work with a different set of rules. If there is an example that covers this, please advise point me to the link.

If not, perhaps you may be able to help me to solve the problem. This is a loan that ties the interest rate AIR, to the our country’s Reserve Bank Official Cash Rate (OCR). The OCR is increased in order to stop an over inflated economy.
DETAILS;
1. These are long term, fixed period loans. (Penalties are charged if lump sum payments are made to pay the loan off sooner than due date, except if the property is sold).
2. Fixed installment for term of the loan.
3. If the OCR goes up, the banks will follow.
4. If the OCR goes down, the banks will follow, but never lower than the original AIR.
5. The timing of the change does not match the timing of the due date of the installment, so split daily interest calculations have to be made to allow for the increase. Not a problem, just insert a row to enter the split for the new rate calculated for each set of days, both calculations based on the balance as at the date of the last principal payment.
THE PROBLEM
6. At the point when any increase in the OCR will cause the total amount owed to go up, that part of the excess interest increase has to be calculated, and is then added onto the fixed installment payment. This is done so the loan will repaid on the final period date, with the final installment. New loans are affected the most as there is no cushion from any earlier OCR decreases that may exist on a loan that has been in place for 4 or 5 years.

I can do the calculation manually after the event, but I need to be able to have the changes calculated automatically as projections for the future based on political information ahead of time for budgeting purposes.

Thanks.

• Reply Hello ROSEMARIE LINFOOT,

Loan-Amortization-Schedule-with-Variable-Interest-Rate-And-OCR.xlsx

Regards,
ExcelDemy

4. Reply Richard Mutale Bwalya Mar 8, 2023 at 9:17 AM

Is it a legal practice to transform say, what started off as a fixed rate loan into a variable rate loan, somewhere down the life of a loan because of a sudden happening recession?

• Reply Hello RICHARD MUTALE BWALYA,

Thank you for your question. Changing a fixed-rate loan to a variable rate depends on the terms and conditions of the loan agreement, in addition to the applicable laws and regulations in the jurisdiction where the loan was made.

So, we believe it is best that you contact a financial advisor who can suggest the proper course of action based on your agreement.

Regards,
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