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Amortization Software - $25 per license

Amortization Software for Accurate, Editable Loan Schedules

Amortization Pro is Windows amortization software for building detailed loan repayment schedules. Calculate principal and interest, review annual totals and payoff information, print complete reports, and edit individual payment dates, amounts, rates, and notes. Start online for free or purchase the full software for $25 per license.

Try the Free Version View License Options

Download the Windows evaluation · One-time license purchase. No subscription or recurring charge.

Amortization Pro showing loan inputs, totals, and interest charts
Amortization ProLoan inputs · Clear totals · Visual charts
$25 per licenseNo subscription or recurring charge
Windows desktop softwareBuild and save schedules on your computer
Real support(608) 444-6575 · support@powerofinterest.com

Choose the right version

Start free, test the download, or unlock everything.

Each option uses the same practical approach to loan schedules, but the editing and saving capabilities differ.

Free online

Free Schedule Calculator

$0 runs in your browser
  • Build complete amortization schedules
  • Review totals, charts, and annual summaries
  • Print the schedule and report
  • Individual payment rows remain view-only
Open Free Version
Download and evaluate

Windows Evaluation

$0 five unrestricted uses
  • Install and evaluate the desktop software
  • Use full loan amounts for five schedule uses
  • After five uses, principal is fixed at $60,000
  • Register later without reinstalling
Download Evaluation
Registered full version

Amortization Pro

$25 per license
  • Edit payment dates, amounts, rates, and notes
  • Recalculate all later rows automatically
  • Save and retrieve loan schedules
  • Print annual totals and complete reports
  • Use any loan principal amount
  • Choose 1 license for $25 or 4 licenses for $100
View License Options

See the software

Loan terms, totals, and charts in one clear workspace.

Amortization Pro loan terms and payment totals

Enter the loan once

Set the principal, rate, dates, payment frequency, and calculation method, then build the full schedule.

Amortization Pro principal and interest charts

Review the complete picture

See total interest, total paid, payoff date, remaining balance, and annual interest-versus-principal charts.

A real amortization example

See what one extra principal payment changes.

This example uses a $250,000, 30-year loan at 6.50% with a regular monthly principal-and-interest payment of $1,580.17. A $10,000 principal payment is entered after payment 12.

Original schedule

No extra payment

Monthly payment
$1,580.17
Total interest
$318,861.22
Scheduled payoff
360 months
Balance after payment 12
$247,205.69
Revised schedule

$10,000 extra after month 12

Monthly payment
$1,580.17
Total interest
$269,588.24
Estimated payoff
323 months
Balance after payment 12
$237,205.69

Difference in this example

$49,272.98less interest37 monthsearlier payoff

Illustrative principal-and-interest calculation only. Actual lender posting methods, fees, rounding, dates, and loan terms may change the result.

Review the Full Extra-Payment ExampleBuild Your Own Schedule

Practical product details

Simple software without a complicated subscription.

2

Version 4.2.2

Released July 28, 2026. Includes editable payment rows, saving, retrieval, CSV export, charts, annual totals, and printable reports.

Try before you purchase

Confirm the software works for you first.

Use the online calculator immediately or install the Windows evaluation before purchasing a license.

1

Use the free calculator

Build, review, and print a complete amortization schedule in your browser. Payment rows remain view-only.

Open the free calculator
2

Install the evaluation

Test the complete Windows program for five unrestricted schedule builds before registration.

Download the evaluation
3

Purchase only when ready

One license is $25 and the four-license pack is $100. There is no subscription or recurring charge.

Review license options

Free online tools

Calculate one loan question at a time.

Use twelve focused calculators for interest, payments, payoff strategies, balances, Rule of 78, balloon loans, and refinancing. Your entries stay in your browser.

View all 12 calculatorsBuild a complete amortization schedule

Amortization guides

Understand common loan-schedule situations.

These practical guides explain how different payment structures affect principal, interest, timing, and payoff.

Questions

Frequently asked questions

What does Amortization Pro cost?

Amortization Pro is $25 per license. A 4-license pack is $100. Each purchase is a one-time charge with no subscription or recurring fee.

What is different about the free online version?

The free version builds and prints schedules, but individual payment-row dates, payment amounts, rates, and notes are view-only.

What is the downloaded evaluation?

It is the Windows desktop software. It allows five unrestricted schedule uses. After that, the principal is fixed at $60,000 until registration. Compare the free, evaluation, and registered versions.

How is the software registered?

After purchasing, open Register Software, copy the Installation ID, and send it with your payment information. We return the one-time passcode for that installation.

How do I get help?

Call (608) 444-6575 or email support@powerofinterest.com. We check messages often and respond quickly.

Build your first schedule now.

Use the free calculator immediately, or purchase one license for $25 or a 4-license pack for $100.

Try It FreeBuy Full Version