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PPower of Interest

Power of Interest Windows software

Choose the loan software that matches the job.

Power of Interest develops focused Windows desktop software for amortization schedules, private loan management, payment coupon books, escrow analysis, and loan reconciliation. Each program can be evaluated before purchase.

Which program do I need?

Choose by what you are trying to do.

The programs overlap only where they need to. This table shows the simplest starting point.

What you needAmortization ProDaily Interest & Payoff ProMortgage Payoff CalculatorPrivate Loan ManagerLoan Reconciliation & Payoff Pro
Best forBuilding and editing loan schedulesRepeated daily-interest and payoff calculationsHomeowners planning extra mortgage paymentsManaging loans you have madeReconstructing irregular payment histories
Create a new amortization scheduleYesSimple payoff / per-diem calculationSimple mortgage payoff projectionLoan setup plus ongoing trackingNo — starts with an existing history
Record actual payments over timeEditable schedule rowsNo — saves payoff calculationsPlanned monthly extra amountsYes — core purposeYes — historical reconstruction
Exact dates / irregular payment historyYesYes — exact payoff datesNo — intentionally month-basedActual transaction datesYes — core purpose
Consumer-friendly mortgage payoff planningAdvancedPayoff and per-diem work rather than mortgage planningBest choiceNot its primary purposeNot its primary purpose
Price$49 one time$25 one time$25 one time$99 one time$99 one time

Core Windows loan software

Start with the two main Power of Interest programs.

Use Amortization Pro to build and edit the scheduled loan. Use Private Loan Manager to service the loan after it is made and record what actually happens.

$49 one-time purchase

Amortization Pro

Create and edit detailed amortization schedules. Change payment dates, amounts, rates, and notes, then recalculate the remaining schedule.

  • Build scheduled loan payments
  • Edit individual payment rows
  • Extra principal, changing rates, balloons, annual totals
  • Save, retrieve, print, chart, and export schedules
View Amortization ProDownload Evaluation
Amortization Pro software boxAmortization Pro schedule screen
Private Loan Manager software boxPrivate Loan Manager loan portfolio screen
$99 one-time purchase

Private Loan Manager

Manage loans after they are made. Post actual payments, track principal and interest, monitor delinquency, and answer balance and year-end questions.

  • Multiple-loan portfolio
  • Current and historical balances
  • Payment ledger and principal/interest allocation
  • Payoff, delinquency, maturity, and year-end reports
View Private Loan ManagerDownload Evaluation

Specialized loan tools

Use these programs for focused tasks.

Daily Interest & Payoff Calculator Pro software box

$25 one-time

Daily Interest & Payoff Calculator Pro

Calculate per-diem interest, accrued interest, and payoff amounts, then save, print, or create a PDF payoff worksheet.

View softwareFree evaluation
Mortgage Payoff Calculator software box

$25 one-time

Mortgage Payoff Calculator

Consumer-friendly Windows software that shows how extra mortgage payments change payoff month, time saved, and interest saved.

View softwareBuy for $25
Loan Payment Coupon Book Pro software box

$25 one-time

Loan Payment Coupon Book Pro

Create dated borrower payment coupons for private loans, seller financing, mortgages, and installment loans.

View software
RESPA Escrow Analysis Pro software box

$25 one-time

RESPA Escrow Analysis Pro

Prepare initial or annual escrow analyses and a 12-month aggregate escrow calculation.

View software
Loan Reconciliation and Payoff Pro software box

$99 one-time

Loan Reconciliation & Payoff Pro

Reconstruct irregular payment histories and calculate a payoff through a selected date.

View software

Not sure which one?

Choose by task.

Start with the job you need to do.

Calculate daily interest and a payoff

Daily Interest & Payoff Calculator Pro. Calculate per diem and total payoff, save the calculation, and create a payoff worksheet.

Build or change the scheduled loan

Amortization Pro. Create the amortization schedule before or when the loan terms are established.

Manage loans and record payments over time

Private Loan Manager. Track actual payments, balances, delinquency, payoff, and year-end principal and interest.

Reconstruct an old or problem loan

Loan Reconciliation & Payoff Pro. Enter irregular historical payments and rebuild the balance through a selected date.

Give a borrower payment coupons

Loan Payment Coupon Book Pro. Create and print dated payment coupons.

Analyze an escrow account

RESPA Escrow Analysis Pro. Prepare escrow projections and aggregate analyses.

Since 1999Loan and interest software
Free evaluationsTry before buying
One-time purchasesNo forced monthly plan
U.S. support(608) 444-6575