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Calculate repayments, total interest, and see a full amortisation schedule.
Total Principal
$250,000
borrowed
Total Interest
$256,405
over loan term
Payoff Date
September 2051
loan free
Early / Extra Repayment - optional
Enter an additional amount on top of your regular repayment to see how much sooner you can pay off the loan and how much interest you save.
Offset Account Balance - optional
An offset account reduces the principal you pay interest on. e.g. $50,000 offset on a $300,000 loan means you only pay interest on $250,000.
Interest-Only Period - optional
Enter the number of years at the start of the loan where you only pay interest (no principal reduction).
Rate Change Scenario - optional
Model a rate rise or fall partway through the loan.
P&I Payment / month
$1,688.02
Total Interest
$256,405
Interest ratio
102.6%
% of original loan amount
Total Repaid
$506,405
Principal + Interest Total
Full cost of the loan over 25 years
$506,405
Principal vs Interest
Interest
51%
For illustrative purposes only. Results are estimates based on standard amortisation formulas and do not account for fees, insurance, rate changes, or lender-specific terms. Always consult a qualified financial adviser or your lender for personalised advice. For a detailed walkthrough of how amortisation works and why small changes early in a loan make a large difference, read our guide on the true cost of borrowing.