Refinance Calculator AU
Table of contents
7 sections
How to compare an investment-property refinance scenario
Identify the loan purpose and structure
Write down which property or properties secure each loan and what the borrowing is used for. Distinguish an investment loan from a home loan used partly for another purpose. For mixed borrowing, ask the lender or broker how the application should be classified.
In the main calculator, select Majority investment only when it describes the scenario. The selection changes the illustrative preset; it does not identify every lender product or establish your eligibility. Use a written quoted rate for the comparison.
Include all proposed borrowing in LVR
Add any top-up, rolled-in costs or other extra borrowing to the loan being refinanced. Use the LVR calculator to divide that total by the property value. A lender may use a different valuation from your estimate.
Illustrative example: $600,000 against an $800,000 property is 75% LVR. Adding $60,000 raises the proposed loan to $660,000 and the LVR to 82.5%. That may change the available products or insurance costs. Confirm the actual treatment with the lender.
Compare repayments, fees and cash requirements
Use the home loan refinance calculator with the proposed balance, quoted interest rate and remaining term. Include the ongoing fees and switching costs. If comparing two quotes, use the offer-comparison tool on the same balance and term.
These calculators model principal-and-interest repayments. They do not model rent, vacancy, tax deductions, interest-only periods, offset balances or the full property cash flow. Keep those items in a separate budget and confirm the repayment structure on the lender schedule.
Confirm assessment and purpose-specific questions
Organise current loan statements, income evidence, property details and the rental information the lender requests. Use the document checklist as a starting point, then follow the lender’s actual requirements.
The usable equity calculator estimates room beneath a selected LVR; it does not assess borrowing capacity. Accessing equity creates additional debt. Ask a qualified tax adviser about loan-purpose records and tax treatment before combining private and investment borrowing.
Keep three different questions separate
| Question | What answers it? |
|---|---|
| How much equity is there? | Property value minus outstanding loan balance. |
| What would the new repayments be? | A loan schedule using the new balance, rate and term. |
| Will the lender approve it? | The lender’s valuation, serviceability and credit assessment. |
Do not treat an equity figure as cash already available to spend. Compare the higher debt and repayment commitment before deciding whether a top-up serves your plans.
Sources and calculator limits
Sources checked on 28 October 2026. Examples use fixed inputs; actual fees, rates, valuations and approval rules can differ. Read the calculator assumptions and limitations. For questions about the site, contact us. About Sana Hosseni and the calculators.
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Where will your next move take you?
Choose the calculator or guide that helps you understand your next refinance decision. Browse all calculators or explore the guides.
Calculators and practical guides
Compare your current loan with a new loan, including repayments, fees and payoff time.
Work out your loan-to-value ratio, equity and distance from 80% LVR.
Estimate your usable equity and the loan amount at your chosen LVR.
Compare two offers against your current loan, including fees and cashback.
Add up switching costs and estimate how long your savings take to cover them.
