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Amortization Pro for Windows · $25 one-time license

Amortization Pro for Windows — $25 One-Time Purchase

Create, edit, save, retrieve, and print detailed loan amortization schedules. Change individual payment dates, amounts, interest rates, and notes, then automatically recalculate the remaining schedule.

Download Free EvaluationBuy for $25

Use the free online schedule calculator · No subscription or recurring charge.

Amortization Pro Windows loan software product box
Amortization ProWindows loan software · $25 one-time license
Actual Amortization Pro software screen
Actual software screenLoan schedule workspace
Since 1999Loan and interest software
One-time purchase optionsNo forced monthly subscription
Free evaluationsTry Windows software before buying
U.S.-based 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.

Which program do I need?

Start with the loan problem you are trying to solve.

Each Power of Interest program is built around a specific task, so you do not need to buy a large suite just to get one calculation done.

A

I need an amortization schedule

Build and revise complete principal-and-interest schedules with detailed payment rows.

C

I need printable payment coupons

Create dated coupon books for a borrower, private loan, seller financing, or installment note.

E

I need an escrow analysis

Prepare initial or annual escrow disclosures and run a 12-month aggregate analysis.

R

Actual payments do not match the schedule

Reconstruct the loan from dated transactions and calculate a payoff through a selected date.

Compare all loan software

More Power of Interest software

Focused Windows tools for common loan problems.

See the program itself before downloading. Each product below includes an actual software screenshot as well as the product box.

View the complete software catalog

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

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

Expanded amortization library

Learn the loan math behind the schedule.

The guide library now covers principal, interest-rate comparisons, payoff strategies, payment frequency, seller financing, equity, escrow, and schedule troubleshooting.

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