Calculate your weekly, fortnightly and monthly home loan repayments. See the total interest you'll pay and how much you can save by paying more.
Repayment amount
per month
Important: Results assume a fixed interest rate for the full loan term and are for illustrative purposes only. Actual repayments will vary with rate changes. For interest-only loans, principal is not reduced during the interest-only period. Always confirm figures with your lender.
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Common questions
At a 6.5% interest rate over 30 years, repayments on a $500,000 mortgage are approximately $3,160 per month, $1,457 per fortnight or $728 per week. At 6.0%, monthly repayments drop to around $2,998. Use our calculator to model any loan amount and rate.
Paying fortnightly or weekly saves money over the life of the loan. Because there are 26 fortnights in a year, fortnightly repayments are equivalent to making one extra monthly payment per year. This reduces your principal faster, cuts total interest paid, and can shave years off your loan term — all without increasing the individual payment amount.
Every dollar in extra repayments goes directly to reducing your principal balance, which means less interest is charged each day. Even a modest $200 extra per month on a $600,000 loan at 6.5% can save over $100,000 in interest and cut more than 4 years from a 30-year loan. Our calculator shows the exact savings for any extra repayment amount.
At a 6.5% interest rate over 30 years — typical for a principal-and-interest loan in Sydney in 2026 — monthly repayments on a $700,000 mortgage are approximately $4,424. Fortnightly repayments would be around $2,040 and weekly around $1,020.
At 6.5% interest over 30 years, monthly repayments on a $550,000 mortgage are approximately $3,476. Fortnightly repayments are around $1,603 and weekly around $801. Brisbane's median loan size has grown significantly since 2021; this repayment level is increasingly common for properties in middle-ring suburbs.
At 6.5% per annum over 30 years, monthly repayments on a $600,000 mortgage in Melbourne are approximately $3,792. Fortnightly repayments are around $1,749 and weekly around $875. If you opted for a 25-year term instead, monthly repayments rise to about $4,056 but you would save tens of thousands in total interest.
At 6.5% interest over 30 years, fortnightly repayments on a $450,000 mortgage are approximately $1,311. Monthly repayments are around $2,844 and weekly around $655. Switching from monthly to fortnightly repayments at this loan size can save approximately $60,000 in total interest over 30 years.
At 6.5% interest over 30 years, weekly repayments on a $400,000 mortgage are approximately $583. Monthly repayments are around $2,528 and fortnightly around $1,165. Adelaide's relatively affordable property market means $400,000 loans remain common for houses in outer and middle-ring suburbs.