Bankruptcy of Co-Borrower: Joint Mortgage Continuity in 2026

Introduction

A joint mortgage is a single debt obligation shared by two or more borrowers. When one co-borrower enters bankruptcy in 2026, the mortgage contract continues and the lender retains full recourse against all parties. The solvent co-borrower cannot simply walk away; the debt remains enforceable and the property may be exposed to sale by the trustee in bankruptcy. This article sets out the legal mechanics, lender behaviour and practical pathways under Australian law. It does not constitute personal financial advice.

Legal Framework: Joint Tenancy, Tenants in Common and the Bankruptcy Act

The fate of a jointly owned property hinges on the form of co-ownership. Joint tenancy carries a right of survivorship, while tenancy in common defines distinct percentage shares. Upon the bankruptcy of one co-owner, the official trustee in bankruptcy automatically acquires the bankrupt’s interest in the property. That interest vests in the trustee and the trustee must decide whether to sell, hold or compromise the asset for the benefit of creditors.

The Bankruptcy Act 1966 (Cth) gives the trustee a statutory power to sell the bankrupt’s interest. If the property is held as joint tenants, the trustee registers a transmission of the bankrupt’s share, severing the joint tenancy and converting it into a tenancy in common. The trustee then holds a divided share. In either case, the trustee can apply to the court for an order for sale of the whole property under section 79 of the Act, even against the wishes of the non-bankrupt co-owner. The Australian Financial Security Authority (AFSA) administers these processes and publishes guidance on the treatment of real property in bankruptcy (see AFSA – Property and Bankruptcy).

The co-ownership structure determines the trustee’s bargaining position. A joint tenancy with a spouse or de facto partner may attract Family Court considerations, whereas a tenancy in common with an arm’s-length investor leaves less room for delay. In 2026, the policy emphasis remains on returning value to creditors, and trustees are active in forcing sales when the bankrupt’s equity is sufficient to cover costs.

Effect on the Mortgage: Lender’s Security and Acceleration Rights

The mortgage contract typically survives the bankruptcy of one borrower because the loan is joint and several. The lender can continue to demand payments from the solvent co-borrower and, if payments cease, enforce the mortgage. Most standard Australian loan agreements include an event of default triggered by a borrower’s bankruptcy. Even if the solvent co-borrower maintains instalments, the lender retains the right to accelerate the loan and require full repayment.

APRA’s prudential framework for residential mortgage lending—principally Prudential Standard APS 220 Credit Risk Management—does not dictate lenders’ responses to co-borrower bankruptcy, but it does require banks to classify loans appropriately when a borrower’s capacity is impaired. Once the loan is reported as a non-performing exposure, the bank faces higher capital charges and is incentivised to either restructure or exit the facility. In practice, lenders often issue a default notice under section 88 of the National Credit Code, giving the non-bankrupt borrower 30 days to remedy the breach, and move toward mortgagee sale if the default is not cured. (Refer to APRA’s publications on credit risk for prudential expectations.)

Importantly, the lender’s security interest covers the whole property, not just the bankrupt’s share. This means the trustee, while holding the bankrupt’s equity, takes subject to the mortgage. If the lender exercises power of sale, any surplus after discharge of the loan must be distributed between the co-owners according to their respective interests, with the bankrupt’s share passing to the trustee. The solvent co-borrower cannot unilaterally direct the proceeds.

Options for the Solvent Co-Borrower: Buyout, Refinance and Negotiation

The non-bankrupt co-borrower retains several levers, though none are cost-free. A common path is a buyout: the solvent party purchases the bankrupt’s interest from the trustee at market value, refinancing the mortgage into a sole name. The trustee will require a fair valuation and often a quick settlement. The buyout price may be discounted if the trustee wishes to avoid the costs of a court-ordered sale. A formal binding offer through a solicitor is the standard approach.

Refinancing in 2026 requires meeting a lender’s serviceability criteria at prevailing interest rates. The Reserve Bank of Australia’s cash rate target, alongside the three-year fixed-rate cohort that reprices through mid‑2026, directly affects borrowing capacity. A rise of 100 basis points can reduce maximum loan-to-value ratios by 8–12 per cent depending on household expenses. The solvent co-borrower should obtain a conditional approval before engaging with the trustee. (For the current cash rate refer to RBA – Cash Rate Target.)

If the property has negative equity, a consensual sale arranged by the solvent co-borrower may limit legal costs. The trustee will agree to a private sale if it yields a higher net return than a forced auction. Any shortfall remains a joint unsecured debt, and the bankrupt’s discharge may extinguish their personal liability, leaving the solvent borrower solely liable for the remainder.

Tax and Regulatory Considerations

The sale of a main residence will typically be exempt from capital gains tax under the ATO’s main residence exemption if the property was the home of the solvent co-borrower throughout ownership. However, the transfer of the bankrupt’s interest to the trustee is a CGT event for the bankrupt. Any capital gain or loss is assessed in the bankrupt’s income tax return for the year. The solvent co-borrower does not incur a CGT liability on the transfer, but if the trustee sells the property, the usual CGT rules apply. For a foreign co-borrower or one who is not an Australian resident, additional withholding tax obligations under the Foreign Acquisitions and Takeovers Act 1975 may arise, and FIRB approval could be required for the solvent party to buy the share if that party is a foreign person. (See FIRB guidance on residential real estate.)

State stamp duty legislation can also impose duty on the buyout transaction. In New South Wales, for example, a transfer of a share between co-owners as a result of bankruptcy may be exempt under section 63 of the Duties Act 1997 if structured correctly, but the exemption is not automatic. The solvent co-borrower should obtain private taxation advice.

Practical Timeline and Pre-Empire Steps

Co-borrower bankruptcy typically follows this sequence in 2026: (1) the bankrupt presents a debtor’s petition or a creditor obtains a sequestration order; (2) a registered trustee is appointed; (3) within 14 days the trustee issues notices to creditors and the co-owner; (4) the trustee obtains a property valuation and decides within 6–12 months whether to claim the interest; (5) if claimed, the trustee will negotiate or commence court proceedings for sale. The solvent co-borrower should act promptly to secure independent legal representation, open a dialogue with the trustee and engage a mortgage broker to explore refinance options.

Funding a buyout may require a “spousal or partner purchase” loan product, which some lenders offer at loan-to-value ratios up to 95 per cent if the remaining borrower can demonstrate serviceability. Lenders will scrutinise living expenses and may require a statutory declaration that the bankrupt no longer contributes to household costs. The mortgage broker must disclose the bankruptcy to prospective lenders, as a shadow loan history may affect credit assessment.

Conclusion

The bankruptcy of a co-borrower does not extinguish a joint mortgage. The loan continues, the lender’s security is preserved, and the trustee acquires the bankrupt’s interest with the power to force a sale. The solvent co-borrower can retain the property through a market-value buyout or a consensual sale that minimises losses. Each step involves legal, tax and credit implications that depend on the individual facts. This article provides general information only and does not constitute personal financial advice. Consult a licensed mortgage broker and a qualified insolvency lawyer before making any decision.