Mortgage Repayment Calculator

Calculate monthly, fortnightly or weekly repayments — and see exactly how extra payments cut years off your loan.

Loan Details
$
%
years
Monthly
Fortnightly
Weekly
$
Quick Extra Payments
Monthly Repayment
Total Interest
Interest Saved
Total Repaid
Payoff Time
Time Saved vs Monthly
Frequency Comparison
Monthly
Fortnightly
Weekly
Principal vs Interest Over Time
Advertisement
Advertisement
YearBalanceAnnual PrincipalAnnual InterestCumul. Interest

Fortnightly vs Monthly — Why It Matters

Switching from monthly to fortnightly repayments is one of the easiest ways to save tens of thousands in interest. Here's why it works:

💡 The Maths

There are 26 fortnights in a year but only 12 months. Paying half your monthly repayment fortnightly means you make the equivalent of 13 monthly payments per year — one extra payment every year, automatically.

🏦 Offset Account?

Have savings in an offset account? Use our Offset Calculator for even more accurate results that factor in your offset balance.