Amortization Formula Excel: A Step-by-Step Guide for Beginners

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By Matthew Simpson

Amortization is a way of spreading out the cost of an asset over its useful life. In the context of loans, it’s how you figure out your monthly payment to pay off the loan over a set period. If you want to calculate your loan’s amortization schedule using Excel, you’ll find it’s pretty straightforward. Just grab your loan details, and let’s get to work!

Amortization Formula Excel Tutorial

Before we dive into the steps, let’s understand what we are aiming for. By the end of this tutorial, you’ll be able to create an amortization schedule that shows each payment’s breakdown between principal and interest. You’ll also see the remaining balance decrease over time.

Step 1: Open a new Excel worksheet

Open Microsoft Excel and start a new worksheet. This is where you’ll create your schedule.

Starting with a fresh worksheet ensures that you have a clean slate to work on. It’s like having a blank canvas where you can paint your financial future.

Step 2: Label your columns

Create columns for Payment Number, Payment Amount, Interest Portion, Principal Portion, and Remaining Balance.

Clearly labeling your columns is key to understanding your amortization schedule. Think of these labels as signposts that guide you through the journey of your loan repayment.

Step 3: Enter the loan details

In the cells below your column labels, input your loan amount, interest rate, and the total number of payments.

Entering your loan details accurately is crucial. Any mistake here could lead to a wonky schedule that might have you paying more than you should!

Step 4: Use the PMT function for payment amount

In the Payment Amount column, use the PMT function to calculate the monthly payment.

The PMT function is your best friend in Excel when it comes to loans. It does all the heavy lifting, crunching the numbers to give you the monthly figure you need to pay.

Step 5: Calculate interest and principal portions

Use the IPMT and PPMT functions to calculate the interest and principal portions of each payment.

The IPMT and PPMT functions break down your payment into what goes towards interest and what chips away at the principal. This way, you always know exactly where your hard-earned cash is going.

Step 6: Deduct the principal portion from the remaining balance

After each payment, subtract the principal portion from the remaining balance to update it for the next payment.

Subtracting the principal portion is like watching a thrilling countdown. With every payment, you’re one step closer to zeroing that balance and owning your asset outright!

After you’ve completed these steps, you’ll have a comprehensive amortization schedule laid out in front of you. It will show you how much of each payment goes to interest and principal, and you’ll be able to track the diminishing loan balance. It’s a fantastic way to visualize your progress and keep motivated to reach that final payment.

Amortization Formula Excel Tips

  • Make sure to format your interest rate correctly. If it’s an annual rate and you’re making monthly payments, divide it by 12.
  • Always double-check your formulas for accuracy. A small mistake could throw off your entire schedule.
  • Use the fill handle in Excel to drag down formulas. It saves time and ensures consistency.
  • Remember that if you make extra payments, you’ll need to adjust your remaining balance manually.
  • Keep your schedule updated. If your interest rate changes or you refinance, update your schedule to reflect those changes.

Frequently Asked Questions

What is an amortization schedule?

An amortization schedule is a table that details each periodic payment on a loan. It shows the breakdown between the interest and principal amounts.

Why is it important to create an amortization schedule?

Creating an amortization schedule helps you understand how much of your payment is going towards the principal versus interest. It’s a great tool for financial planning.

Can I create an amortization schedule for any type of loan?

Yes, you can use the amortization formula in Excel for any fixed-rate loan, whether it’s a mortgage, car loan, or personal loan.

What if I make extra payments?

If you make extra payments, you’ll need to adjust your remaining balance manually in Excel. This will affect the interest calculations for subsequent payments.

Do I need to be an Excel expert to create an amortization schedule?

No, you don’t need to be an expert. With basic knowledge of Excel functions, you can create a schedule using this tutorial.


  1. Open a new Excel worksheet.
  2. Label your columns.
  3. Enter your loan details.
  4. Use the PMT function for payment amount.
  5. Calculate interest and principal portions.
  6. Deduct the principal portion from the remaining balance.


Understanding and managing your loans is crucial for financial well-being, and the amortization formula excel offers a clear visual of how each payment is allocated. It’s empowering to see the balance drop with each payment and to know exactly when you’ll be free of debt. Excel is a powerful tool that makes this process accessible to anyone, regardless of their financial background. So why not give it a shot? You might just find that managing your loans becomes less of a chore and more of a triumph with each passing payment. And remember, if you ever hit a snag, there are plenty of online resources and communities ready to help you out. Stay proactive, plan ahead, and happy amortizing!