Home Loan Repayment Calculator

How this calculator works

This calculator shows the difference between monthly, fortnightly, and weekly repayments when structured correctly.

Because fortnightly and weekly repayments are based on the monthly amount divided by 2 or 4, this approach results in an extra monthly repayment each year. Over time, this can reduce the loan term and lower the total interest paid.

The calculator reflects this difference clearly in both the results summary and the loan balance chart.

How to use the calculator

Important:
Results are indicative only and do not represent a quote, loan approval, or lender-specific calculation. Actual repayments may vary based on lender policy, daily interest calculations, and loan features.

Understanding your results

Once you enter your details, the calculator displays three key sections.

Your results

This section shows:

• Your estimated repayment amount based on the selected frequency
• The total interest payable over the life of the loan
• The total amount repaid (principal plus interest)
• The estimated time to repay the loan
• The years and interest saved compared to standard monthly repayments

These figures update instantly as you change any input, allowing you to compare scenarios quickly.

View your results (repayment comparison)

The summary table allows you to compare repayment amounts side by side:

• Monthly repayment
• Fortnightly repayment (monthly ÷ 2)
• Weekly repayment (monthly ÷ 4)

This view makes it easy to see how the repayment amounts differ across frequencies while keeping the loan terms consistent.

Loan balance chart

The loan balance chart shows how your outstanding loan balance reduces over time.

• The horizontal axis represents time in years.
• The vertical axis shows the remaining loan balance.
• Each line represents a different repayment frequency.

This visual view helps illustrate how paying more frequently can reduce the loan balance faster when repayments are structured as monthly divided by 2 or 4.

Amortisation schedule

The amortisation view provides a detailed breakdown of each repayment, showing:

• The repayment number
• The amount paid
• How much goes toward interest
• How much reduces the principal
• The remaining loan balance after each payment

You can scroll through the schedule to see how the loan progresses over time.

Important things to keep in mind

• This calculator assumes a constant interest rate over the entire loan term.
• Actual repayments may vary due to lender policies, daily interest calculations, fees, or loan features such as offsets or redraws.
• Results are indicative only and do not represent a loan quote, approval, or pre-approval.
• Compare interest rates, including fees, see our True cost home loan calculator

Weekly vs fortnightly vs monthly: what actually makes the difference

Many people assume that switching to weekly or fortnightly repayments automatically saves interest. In reality, the savings usually come from how the repayments are calculated, not just how often they are paid.

When weekly repayments are set at a quarter of the monthly amount, or fortnightly repayments at half, you effectively make an extra month’s repayment each year. This is what reduces the loan term and total interest paid.

This calculator is designed to clearly highlight the difference, so you can see whether changing your repayment structure could benefit your situation.

Want to apply this to your own loan?

If you’d like help reviewing your current loan, adjusting your repayment structure, or understanding how to reduce interest and loan term based on your goals, you can book a personalised strategy call.

Every loan is different, and a tailored approach often makes a bigger difference than a calculator alone.