Free tool
Interest-only calculator.
What you'd pay each month if you're only covering the interest. Useful for investment loans, bridging finance, or an interest-only period on an existing home loan.
No sign-up. No account. Your inputs save locally in your browser.
Just the interest, monthly.
Plug in the loan size and rate. Get the required monthly interest and your effective rate after any variance you want to model.
When this is useful.
Three common scenarios where the headline number is just the interest, not the principal-and-interest payment.
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Investment loans.
Most Australian investment property loans are structured interest-only — the interest is deductible against rental income, principal repayments aren't. Sanity-check what a new investment loan would cost you each month.
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Bridging finance.
You're between properties and carrying two loans. Bridging loans usually run interest-only — see what the monthly cost looks like before you commit.
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An interest-only period.
Most loans let you switch to interest-only for a stretch — common for new investors, between jobs, or after a renovation drained the offset. Work out the monthly payment before you ring the bank.
Plug in your numbers.
Takes a few seconds. Your inputs save locally in your browser, so you can come back to them later.
No account needed.