Negative Equity in Mortgages: Refinance and Sale

Establish the Actual Equity Position

Subtract the outstanding secured debt from a supported property value to estimate equity. A negative result shows how far the debt exceeds that value. Falling property values or a growing loan balance can create the gap.

Use the lender’s valuation for a lending decision. An online estimate or agent’s appraisal can help start the discussion, but it doesn’t establish the value a refinancing lender will accept. Record the valuation basis alongside the balances so the comparison is meaningful.

For an initial review, gather:

• The property estimate and any existing lender valuation.
• Current balances for every loan secured against the property.
• The lender’s payout figure for the proposed settlement, including relevant interest and charges.
• Estimated selling costs if a sale is being considered.

A loan statement balance and a settlement payout can differ. Keep the property-equity calculation separate from the cash needed to complete a sale, which also includes selling costs. An equity calculator can compare the entered debt and value, but the result depends on those inputs.

For example, a hypothetical $620,000 secured balance against a $600,000 value gives negative equity of $20,000. The loan-to-value ratio (LVR), calculated as debt divided by value, is about 103.3% before any refinance costs.

Refinance and Additional Security

A lower advertised interest rate doesn’t close a negative-equity gap. A refinancing lender must accept both the proposed security and the borrower’s ability to repay. The existing debt still needs to be paid out when the new loan settles.

In the $620,000 example, switching rates leaves the debt above the $600,000 property value. Adding costs to the new loan increases the amount that needs funding. A cash contribution reduces that amount, but reaching 100% LVR alone doesn’t establish eligibility under a lender’s policy.

Compare the proposed loan with the lender’s permitted LVR for that borrower, purpose and security. Also compare the remaining term and total costs: Moneysmart’s refinancing guidance explains why fees and a longer term can outweigh rate savings.

An additional-property proposal needs its own assessment. Identify the property owner, accepted value, existing secured debts and the lender’s proposed security structure. Work out how much usable security remains after those debts and the lender’s limits are applied.

If the proposal involves a guarantor, establish the guarantee amount and release conditions before proceeding. The guarantor needs independent legal advice about their exposure. Moneysmart explains the risks of guaranteeing a loan, including losing a home used as security if the debt can’t be repaid.

Additional security changes what the lender can recover against. It doesn’t reduce the borrower’s debt or repair an unaffordable repayment budget.

Sale and the Remaining Debt

Selling a property with negative equity can leave a shortfall after the net proceeds are applied to the loan. Agree the mortgage release and the treatment of any remaining debt with the lender before committing to a settlement that depends on them.

Hypothetical Sale Shortfall

Assume one property secures one loan, with these illustrative figures:

Item	Amount
Sale price	$600,000
Selling and settlement costs	$20,000
Net proceeds available for the loan	$580,000
Loan payout, including assumed interest and lender charges	$620,000
Remaining shortfall	$40,000

The $20,000 negative-equity estimate becomes a $40,000 sale shortfall once the assumed selling costs are included. Replace every estimate with the actual settlement figures before relying on the result.

The National Debt Helpline’s guidance on selling mortgaged assets says to obtain written lender consent. It explains that consent can be harder when the debt exceeds the home’s value and that the lender may require a particular sale price.

The lender’s discharge process also needs time and authority. For example, NAB’s discharge checklist requires borrower, property and loan details, plus authorised representative details. NAB asks for at least 10 business days to process a discharge form.

Have the solicitor or conveyancer coordinate the release with the lender. Record how much cash the borrower can contribute and any agreed repayment terms for the shortfall. A mortgage release does not, by itself, mean the lender has waived the remaining debt.

Ordinary mortgage shortfalls are separate from reverse-mortgage negative equity protection. Moneysmart’s reverse-mortgage guidance explains the protection for qualifying reverse mortgages and the need to check older contracts. Don’t apply that protection to a standard home loan.

Support Before the Position Worsens

Contact the lender’s hardship team early if repayments are becoming unaffordable. Missed payments or using credit to cover regular repayments are reasons to review the budget promptly. With the borrower’s consent and the lender’s required authority, a broker can help explain the position and organise supporting information.

Prepare an income-and-expense budget showing what the borrower can pay and how long the difficulty is expected to last. ANZ’s hardship process assesses the borrower’s financial position and can include payment relief or a loan variation. Any arrangement depends on the individual case.

Ask what happens to interest, missed payments and the balance during and after the proposed arrangement. Repayment relief can give time to act while the underlying negative-equity position remains.

Moneysmart’s mortgage assistance guidance recommends financial counselling or legal advice before a sale. Free financial counselling is available through the National Debt Helpline on 1800 007 007. If a hardship dispute remains unresolved after the lender’s internal process, the Australian Financial Complaints Authority provides independent dispute resolution.

Use the mortgage hardship assistance guide to prepare for that discussion. If the borrower receives court documents, seek legal help promptly and give the adviser those documents. Base the next step on an affordable arrangement or an agreed sale and shortfall plan, without assuming the lender will forgive the debt.