Independent Legal Advice — Australia
A Guide to
Guarantor
Obligations
Before you sign a guarantee, understand what you are committing to. This guide explains your legal obligations, the risks you assume, and the protections available to you under Australian law.
Foundation
What Is a Guarantor?
A guarantor is a person or entity who promises to satisfy another person's debt or obligations under a loan if that person — the borrower — fails to do so. By signing a guarantee, you are making a legally binding commitment to the lender. If the borrower defaults, the lender can turn to you to repay the debt, often without first exhausting their remedies against the borrower.
Guarantees are a common feature of Australian lending. They are used to provide lenders with additional security, particularly where a borrower has limited assets, a short credit history, or where the loan is for a business or investment purpose. The most common scenarios in which individuals are asked to act as guarantors include parents helping adult children purchase their first home, spouses or partners guaranteeing each other's investment loans, and directors or shareholders guaranteeing company debts.
Bank of Mum & Dad
Parents guaranteeing a child's home loan — one of the most common and emotionally complex guarantee arrangements in Australia.
Spousal Guarantees
Spouses or partners guaranteeing investment loans or family trust borrowings. Special legal protections apply under the Garcia principle.
Business Guarantees
Directors or shareholders personally guaranteeing company debts. Liability can extend well beyond the initial loan amount.
Understanding the Documents
Types of Guarantees
Not all guarantees are the same. The type of guarantee you are asked to sign determines the scope and extent of your liability. It is essential to understand precisely what kind of guarantee is being proposed before you agree to anything.
| Type | Description | Risk Level |
|---|---|---|
| Unlimited Guarantee | The guarantor is liable for the entire outstanding debt, including principal, interest, default interest, enforcement costs, and legal fees. There is no cap on liability. | Very High |
| Limited Guarantee | The guarantor's liability is capped at a specified dollar amount. However, costs and interest may still be added on top of the cap unless expressly excluded. | Moderate |
| All Monies Guarantee | Covers all present and future debts owed by the borrower to the lender — not just the specific loan. If the borrower takes out additional facilities, the guarantor may be liable for those too. | Very High |
| Continuing Guarantee | Remains in force until formally released by the lender, even if the original loan is repaid or varied. The guarantee survives changes to the loan terms. | High |
| Guarantee and Indemnity | Combines a guarantee (secondary obligation) with an indemnity (primary obligation). The indemnity may be enforceable even if the underlying loan is found to be unenforceable. | Very High |
| Mortgage-Backed Guarantee | The guarantee is secured by a mortgage over the guarantor's property. If the guarantee is called, the lender can sell the guarantor's property to recover the debt. | Very High |
In practice, most residential mortgage guarantees are unlimited, all-monies, and continuing. This means your exposure is not limited to the original loan amount — it can grow as interest accrues, default interest is charged, and enforcement costs are incurred.
What You Are Taking On
Risks & Responsibilities
When you sign a guarantee, you assume personal liability for the borrower's debt. This is not a theoretical risk — lenders regularly enforce guarantees, and the consequences for guarantors can be severe. Understanding the full scope of your potential liability is the first step in making an informed decision.
Your liability as a guarantor typically extends to the principal amount of the loan, ordinary interest as it accrues, default interest (which is often significantly higher than the standard rate), all enforcement costs including the lender's legal fees on a solicitor-client basis, valuation fees, receiver's costs, and any other expenses the lender incurs in recovering the debt.

The Practical Risks You Face
Document Analysis
Key Clauses to Watch
Guarantee documents are complex legal instruments. The following clauses are the most significant from a guarantor's perspective. Your solicitor will review each of these carefully and explain their effect before you sign.
Your Rights Under Australian Law
Legal Protections for Guarantors
While the role of a guarantor carries significant obligations, Australian law provides important protections designed to ensure that individuals are not exploited or misled. These protections are grounded in both statute and equity.
Unconscionable Conduct
Commercial Bank of Australia v Amadio (1983) HCA 14
The High Court will set aside a guarantee where the lender has taken unconscionable advantage of a guarantor's special disadvantage — such as age, illness, limited education, or poor understanding of English. The lender must not exploit a guarantor's vulnerability.
The Garcia Principle
Garcia v National Australia Bank (1998) HCA 48
A spouse who guarantees their partner's business debts may have the guarantee set aside where they did not understand the transaction, received no real benefit, and the lender failed to take reasonable steps to ensure they understood the risks or obtained independent legal advice.
Undue Influence
Yerkey v Jones (1939) 63 CLR 649
A guarantee may be set aside if it was procured by undue influence — that is, where the guarantor was pressured or coerced into signing by the borrower or another party. The decision to guarantee must be genuinely voluntary.
National Credit Code
National Consumer Credit Protection Act 2009 (Cth)
Where the guarantee relates to a consumer credit contract, the National Credit Code imposes disclosure and form requirements. Guarantors must be provided with prescribed warnings and the guarantee must be in writing and signed.
The Advice Process
Independent Legal Advice
Independent legal advice is the most important safeguard available to a guarantor. It ensures that you understand the nature and legal effect of the documents you are signing, the full extent of your obligations, and the potential consequences if the borrower defaults.
The solicitor providing independent legal advice acts solely for you — not for the lender, the borrower, or any other party. This independence is essential. The advice is confidential, and the solicitor's duty is to your interests alone.

What the Advice Covers
During the consultation, your solicitor will explain the legal nature and effect of each document, the obligations imposed on you as guarantor, the consequences of default under the loan, the lender's enforcement rights, and the potential legal consequences if the borrower is unable to repay. The consultation typically takes 45 to 60 minutes.
What the Advice Does Not Cover
Legal advice is not financial advice. Your solicitor can explain the legal risks but cannot advise whether the loan is financially suitable for the borrower, whether the borrower will be able to repay, or whether the transaction makes commercial sense. For financial advice, you should consult your accountant or financial adviser.
Documents Required Before the Appointment
To provide meaningful advice, your solicitor must review all relevant documents before the appointment. You should arrange for the following to be provided in advance:
Identification Requirements
All persons signing documents must bring original identification to the appointment. Acceptable identification typically includes an Australian passport, driver's licence or photo identification card, birth certificate or citizenship certificate, and Medicare or Centrelink card. Copies are not acceptable.
The Solicitor's Certificate
At the conclusion of the consultation, if the lender requires it, your solicitor will complete and sign a Solicitor's Certificate confirming that independent legal advice has been provided. This certificate is a standard requirement in most mortgage transactions and protects both you and the lender by creating a record of the advice given.
Common Scenario
The Bank of Mum & Dad
The "Bank of Mum and Dad" has become one of the most significant sources of housing finance in Australia. Parents who act as guarantors for their children's home loans are making a substantial financial commitment that can last for decades. The emotional desire to help a child enter the property market is understandable, but it must be balanced against a clear-eyed assessment of the legal and financial risks.
In a typical Bank of Mum and Dad arrangement, parents provide a guarantee — often secured by a mortgage over their own home — to allow their child to borrow more than they could otherwise afford, or to avoid paying Lenders Mortgage Insurance. The parents' property becomes security for the child's loan.

Specific Risks for Parent Guarantors
Domestic & Investment Context
Spousal Guarantees
Spousal guarantees — where one spouse or partner guarantees the other's loan — are common in investment lending and family trust borrowing arrangements. They carry specific legal risks and are subject to important protections under Australian law.
The landmark case of Garcia v National Australia Bank Ltd [1998] HCA 48 established that a spouse who guarantees their partner's business debts may be entitled to have the guarantee set aside where they did not understand the nature and effect of the transaction, received no real benefit from it, and the lender failed to take reasonable steps to ensure they understood the risks or obtained independent legal advice.
Common Scenarios for Spousal Guarantees
Spousal guarantees most commonly arise in the following contexts: investment property loans where one spouse has stronger income or credit history; family trust borrowings where the trust is the borrower but the lender requires personal guarantees from the trustees and their spouses; business loans where one spouse runs the business and the other is asked to guarantee the company's debts; and refinancing arrangements where the lender requires both spouses to guarantee the new facility.
Exiting the Guarantee
Release & Discharge
Being released from a guarantee requires the lender's active agreement. Release is not automatic — it does not happen simply because the borrower has been making repayments, because the property has increased in value, or because a certain period of time has passed. You must actively seek a formal written release from the lender.
Circumstances in Which Release May Be Possible
Improved Loan-to-Value Ratio
If the borrower's property has increased in value and the loan balance has reduced, the LVR may have improved to the point where the lender no longer requires the guarantee. Most lenders will consider releasing a guarantor when the LVR falls below 80%.
Loan Repayment
If the borrower repays the loan in full, the guarantee will be discharged. However, if the guarantee is an 'all monies' guarantee, you should confirm with the lender that all obligations have been satisfied before assuming you are released.
Refinancing
If the borrower refinances the loan with a new lender, the original guarantee will be discharged when the original loan is repaid. The new lender may or may not require a new guarantee.
Sale of the Property
If the borrower sells the secured property and the proceeds are sufficient to repay the loan, the guarantee will be discharged. If the proceeds are insufficient, you may remain liable for the shortfall.
Before You Sign
Guarantor Checklist
Before signing any guarantee documentation, work through the following checklist. Each item represents a question you should be able to answer confidently. If you cannot, seek further advice before proceeding.
Understanding the Transaction
Understanding the Risks
The Decision
Independent Legal Advice
Ready to speak with a solicitor?
Hayton Kosky Lawyers can help.
Our solicitors provide independent legal advice to guarantors across Victoria. We will explain your obligations clearly, review all documents before you sign, and issue the required Solicitor's Certificate. Contact us to arrange an appointment.
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