Step-by-step walkthrough

Loan Amortization Calculator Guide

Use this companion guide beside the interactive calculator to make sure you understand the “why” behind every click. Each section includes the classroom explanation, student-friendly language, and quick practice prompts.

Before you start

Collect the data points listed below and double-check their units. Keeping an organized “givens” list is one of the fastest ways to reduce math errors and impress exam graders.

  • amortization
  • loan schedule
  • payment breakdown

Detailed procedure

  1. Step 1

    Enter the loan amount, APR, and term in years.

  2. Step 2

    Optionally add extra monthly payments to see accelerated payoff.

  3. Step 3

    Review the summary plus the first 12 schedule rows to understand how payments amortize over time.

Teaching & troubleshooting tips

Can I export the full schedule?

Copy the rendered table into your spreadsheet—the full amortization data is available via DevTools or by extending the component to surface a CSV download.

How are extra payments applied?

Extra payments go directly to principal each month, reducing the balance before the next interest calculation.

Next steps