Amortisation Calculator

Oct 2, 2026
Knowledge

How To

Powered by LEAP, the Amortisation Calculator allows property lawyers to calculate loan repayments and produce a full amortisation schedule for a matter, then save it to the matter as a PDF with one click.

Key Features

Seamless integration between the Amortisation Calculator and LEAP allows property lawyers to:

Calculate a regular repayment schedule from the principal, interest rate, loan term and repayment frequency.
Pre-fill loan details from the matter, including the loan amount, interest rate, loan term and mortgagor, where these are recorded.
Adjust the amount financed for prepaid interest and additional loan charges, such as PEXA fees.
Model different loan scenarios, including extra repayments, variable rate changes, interest only loans and early payouts.
Solve for an unknown repayment amount, principal, interest rate or loan term with the Quick calculator.
View a full repayment schedule showing the principal, interest, principal remaining, prepaid interest remaining and interest rate for every repayment.
Save the schedule to the matter as a PDF document.

Getting Started

Open a matter and click Amortisation Calculator in the Amortisation group of the LEAP ribbon.

Once loaded, you will be presented with the Regular schedule calculator. Any loan details already recorded on the matter will be pre-filled for you.

Click to edit heading

If for some reason the Amortisation Calculator isn’t appearing in your LEAP ribbon, it could be that there are too many apps in the ribbon, the matter type is not supported, or the app has not been activated from the Marketplace in LEAP Menu.

Click More in the LEAP ribbon to reveal additional apps.

Calculator Types

Choose the calculator you need from the tabs across the top of the app: Regular schedule, Extra repayments, Variable rate, Interest only, Early payout or Quick calculator.

Each calculator (other than the Quick calculator) has two views. Use Loan information to enter the loan details and Schedule to view the repayment schedule.

Loan Information

Enter the Date for first repayment, Principal, Annual interest rate, Repayment frequency and Loan term. The repayment amount is calculated for you as soon as the details are complete.

Click to edit heading

The Repayment frequency can be set to Weekly, Fortnightly, Monthly, Quarterly, Half yearly or Annually, and the Loan term can be entered in years, months, or both.

Loan Adjustments

Use the Loan adjustments panel to record Prepaid interest, which is deducted from the principal, and Additional loan charges, which are added to it. Click + Add fee to add a charge, enter a description (e.g. PEXA fees) and the amount.

The Amount financed is calculated for you and is used as the basis for the repayment schedule.

Click to edit heading

Click the bin icon beside a charge to remove it.

Mortgagor and Comments

Record the name of the Mortgagor and any Comments about the calculation. Both are included on the schedule when you save it to the matter.

Loan Summary

A summary of the key figures is shown below the loan details, including the Amount financed, repayment amount, Number of repayments, Total interest and Total repayments. Additional figures, such as Interest saved and Payout figure, are shown for the calculators they apply to.

Repayment Schedule

Click Schedule to view the full repayment schedule. Each row shows the repayment No., Date, Repayment, Principal, Interest, Principal remaining, Prepaid interest remaining and Interest rate, with the number of repayments and total interest shown above the schedule.

Click to edit heading

For longer loans, more rows are loaded as you scroll through the schedule.

Extra Repayments

Enter an Extra repayment amount per period to see how paying more than the regular repayment affects the loan. The calculator shows the Base regular repayment, the reduced Number of repayments and the Interest saved.

Click to edit heading

The schedule for Extra repayments includes an Extra payments column.

Variable Rate

Click + Add rate change, then enter the date the new rate Applies from and the New annual rate. You can add as many rate changes as you need.

At each rate change, the repayment is recalculated so the loan is still repaid over its original term.

Click to edit heading

Rows where a rate change applies are highlighted in the schedule. The date of a rate change must fall within the term of the loan.

Interest Only

The Interest only calculator shows the Interest-only repayment for the loan. Repayments cover interest only, and the principal falls due with the final repayment at the end of the term.

Early Payout

Enter a Payout date to calculate the Payout figure required to repay the loan early, along with the Total interest paid to payout.

Click to edit heading

The final highlighted row in the schedule is the payout figure.

Quick Calculator

Use the Calculate for field to choose what you want to solve for: Repayment amount, Principal, Interest rate or Loan term. Complete the other three fields and the repayment frequency, and the result is shown below.

Click to edit heading

If the inputs you have entered cannot produce a result, No solution is shown. The Quick calculator does not produce a schedule and cannot be saved to the matter.

Save to Matter

Click Save to matter to save the amortisation schedule to the matter correspondence as a PDF document. The PDF includes your firm name, the matter, the mortgagor, the date and time it was generated, the loan details and summary, the full repayment schedule and any comments.

Click to edit heading

If a document named Amortisation schedule already exists on the matter, a number is added to the new document’s name (e.g. Amortisation schedule (1)), so earlier schedules are never overwritten.
If the loan details are incomplete, a message will explain what is needed before the schedule can be saved.

Refresh & Clear

Your calculations are saved automatically and restored the next time you open the Amortisation Calculator on the same matter.

Click Refresh to retrieve the latest loan details from the matter and reset the current calculator, or Clear to remove the details you have entered.

Last Modified Date

2/10/2026 12:31 PM

Title

Amortisation Calculator

URL Name

Amortisation-Calculator-AU