Auto Loan Calculator Google Sheets

Introduction

An auto loan calculator helps you estimate monthly payments, total interest paid, and loan terms. Google Sheets is an excellent tool for creating such calculators because of its built-in functions and customization options.

This guide will walk you through creating a complete auto loan calculator in Google Sheets, including key formulas, assumptions, and practical examples.

How to Create an Auto Loan Calculator in Google Sheets

Step 1: Set Up Your Worksheet

Open a new Google Sheet and name it "Auto Loan Calculator." Create a table with these columns:

• Loan Amount
• Interest Rate (APR)
• Loan Term (Years)
• Down Payment
• Monthly Payment
• Total Interest
• Total Cost

Step 2: Enter Input Values

In the first row under the column headers, enter your input values:

• Loan Amount: $25,000
• Interest Rate: 5%
• Loan Term: 5 years
• Down Payment: $5,000

Step 3: Add Formulas

Use these formulas in the appropriate cells:

Step 4: Format the Results

Format the result cells to display as currency with two decimal places.

Step 5: Add a Payment Schedule

Create a payment schedule table with columns for Payment Number, Beginning Balance, Payment, Principal, Interest, and Ending Balance.

Use these formulas for the first row of the schedule:

Copy these formulas down the column for each payment.

Key Formulas

The auto loan calculator uses these key financial formulas:

These formulas work together to provide a complete loan breakdown.

Worked Example

Let's calculate a $25,000 loan with a 5% APR over 5 years and a $5,000 down payment.

• Loan Amount: $25,000
• Down Payment: $5,000
• Principal: $20,000
• Interest Rate: 5% APR
• Loan Term: 60 months

The monthly payment would be approximately $375.54, with a total interest of $5,131.20 and a total cost of $25,131.20.