What this calculator covers

This is a general refinance savings estimator for standard residential home loans – owner-occupied and investment, principal & interest and interest-only. It does not account for commercial loans, SMSF, construction finance, or specialist products. Break cost estimates for fixed-rate loans are approximations only – actual figures must be obtained from your current lender. All results are estimates and should not be relied upon as financial advice. A mortgage broker can give you an accurate picture based on your specific loan and circumstances.

Your current loan

$

Please enter a valid property value.

$

Please enter a valid loan balance.

%

Please enter a valid interest rate.

yrs

Please enter remaining years (1–30).

yrs

Enter decimal for partial years (e.g. 0.5 for 6 months remaining).

Note on break costs: If you are still within a fixed-rate period, break costs may apply and can be substantial. The calculator will estimate these, but the actual figure must be obtained from your lender before making any decision.
%

Break costs are estimated on the fixed portion only. The variable portion can typically be switched with just a discharge fee.

The new rate you’re considering

%

Please enter a valid new interest rate.

yrs

Leave blank to keep your current remaining term (a like-for-like comparison). Enter a longer term only if you actually intend to extend the loan.

Not sure what rate you could get? The rate available depends on your LVR, loan size, lender, and whether you negotiate or use a broker. Use a figure from a lender quote or comparison site, or ask a broker to run a scenario. The repayment type for the new loan is assumed to match your current selection.

Default values are used for typical switching costs. Override any of these with your actual figures.

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$
$
$
$

If you have an exact break cost figure from your lender, enter it here. Always confirm the actual figure with your lender before making any decision.

Inputs changed – press Calculate to update your results.

Your LVR & rate position

Loan balance

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Property value

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LVR

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Equity

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Monthly repayment comparison

Cost of switching

Net savings over time – after switching costs

Interest saved minus total switching costs at each checkpoint. Negative means switching costs are still being recouped; positive means you are ahead.

Disclaimer and Important Information

This calculator provides general information only and does not constitute financial, legal, or tax advice. It is intended as a guide only and does not take into account your personal circumstances.

All figures are estimates. Break costs for fixed-rate loans are particularly difficult to estimate accurately and must be confirmed with your current lender before relying on them. Actual savings will depend on rates, lender policies, fees, and market conditions which may change.

Interest-only repayments shown do not include principal reduction; the loan balance remains unchanged for the interest-only period.

Before making any financial decisions, you should seek advice from a qualified and licensed professional.

Default switching-cost figures last reviewed: February 2026. Fees vary by lender – override them with your actual quotes for an accurate result.