Guarantor Personal Loans: Lenders, Risks and Evidence

Guarantor personal loans make another person responsible for the covered debt if your client fails to repay it. A willing family member doesn’t make a loan affordable or mean the lender accepts guarantees. Assess the borrower’s repayment capacity first, then the lender’s permitted structure and the guarantor’s exposure.

For car finance, distinguish a guarantee from a joint application before collecting a parent’s documents. Someone who signs as a co-borrower takes direct responsibility for the debt from the start.

When a Guarantor Helps the Application

A guarantor can reduce a lender’s risk where the lender permits guarantees, but the borrower still needs an affordable loan. Limited credit history and past defaults are different problems. A first-time borrower can have reliable income without a long repayment record, while an unpaid default raises questions about an existing debt.

For a client with low income, calculate what remains after living expenses and existing repayments. If the proposed repayment doesn’t fit that budget, a parent’s willingness to pay doesn’t resolve the shortfall. A lender can also decline because the credit history or proposed security falls outside its policy.

The Australian Securities and Investments Commission (ASIC) requires credit licensees to make reasonable enquiries about the consumer’s finances, requirements and objectives. They must verify the financial position and assess whether the proposed credit is unsuitable. These responsible lending obligations apply to regulated consumer lending even when a guarantee supports the application.

A guarantor promises to meet the liability described in the guarantee when the borrower defaults, subject to its terms and enforcement protections. A co-borrower owes the loan directly. With joint and several liability, the lender can seek the whole outstanding debt from either borrower, regardless of their private agreement to split repayments.

Record the proposed helper’s role explicitly. A parent who receives none of the loan’s benefit needs an explanation of why they are being asked to become a co-borrower.

Find Lenders That Accept Guarantors

Personal-loan guarantee arrangements are product-specific, so distinguish an application that contemplates a guarantor from a product that expressly excludes one. Home-loan family guarantees don’t establish acceptance for a personal loan or a car loan.

Lender	Documented position	What it means for the application
UniBank	As at October 2026, its personal-loan application authorises discussion with a proposed guarantor	The form contemplates a guarantor, but isn’t an approval or a promise that a particular borrower and guarantor qualify
Great Southern Bank	As at October 2026, its co-borrower factsheet says it doesn’t offer personal loans with a guarantor	A guarantee isn’t the route for this product. A joint application has different obligations
Credit24	Its 17 April 2025 guide states it doesn’t provide guarantor personal loans	Its personal-loan application must stand on the borrower’s eligibility, without a guarantee

UniBank’s personal-loan application is a useful starting point for a proposed guarantee. Keep its wording separate from a lending decision. Submit the actual relationship and financial position for the lender’s assessment before representing the structure as available to your client.

Great Southern Bank’s factsheet expressly separates co-borrowing from guarantees. Credit24’s guide describes guarantees generally but excludes them from its own offering. An article explaining guarantors doesn’t establish that its publisher accepts them.

For a proposed guarantor, record their relationship to the borrower and Australian residency status. Set out their verified income alongside their expenses, existing debts and other guarantees. Treat a family relationship as a fact to assess, not an automatic qualification.

For a car loan with a guarantor, obtain acceptance for the vehicle-finance product and the proposed guarantee together. A vehicle offered as security and a parent offered as guarantor are separate parts of the structure. An online application or an advertised fast decision doesn’t remove identity checks or guarantee documentation.

Family guarantees secured by residential property have their own assessment, covered in the home loan guarantor requirements guide.

Assess the Guarantor’s Liability

A full-debt guarantee can expose the guarantor to the outstanding loan plus interest and amounts covered by the agreement. Read the liability limit and recovery-cost provisions before describing the risk as a fixed amount. A guarantee limited to part of a debt has a different exposure.

ASIC’s Moneysmart guarantor guidance explains that a guarantee can affect the guarantor’s own borrowing even while repayments stay current. A default can damage their credit record. If an asset secures the guarantee, that asset can be at risk if the debt isn’t paid.

Fictional Example: A Car Loan Shortfall

Suppose your client owes $18,000 when repayments stop. The lender sells the secured car and credits $11,000 against the debt, leaving $7,000 before further interest or recoverable costs. If the guarantee covers that shortfall and those costs, the parent’s exposure exceeds the missed monthly repayment.

The lender must follow the applicable enforcement process before pursuing the guarantee. A family agreement that the parent will only help for one month doesn’t change the signed guarantee.

Advice and Free Consent

Independent legal advice lets the guarantor understand the actual agreement and their rights. Require the lender’s legal-advice certificate where it is a condition of the guarantee. Don’t describe legal advice as a universal statutory requirement for every personal-loan guarantee.

For subscribing banks, the Banking Code of Practice requires guarantee information and includes advice warnings. It generally delays acceptance until the third day after specified information is supplied, with exceptions including independent legal advice and vehicle asset financing guarantors. Apply the code’s correct guarantor category before promising a waiting period.

As a broker, speak with the guarantor separately from the borrower and explain that they can refuse. Ask them to describe what happens if repayments stop and how they would meet the demand. Record their answer, the documents provided and the opportunity for advice.

Keep any lender-required interview and advice evidence in the file. If the guarantor seems pressured or cannot explain the obligation, pause signing and refer the issue to the lender. A signature alone doesn’t record understanding or voluntary consent.

Collect Evidence From Both Parties

Collect separate financial evidence for the borrower and proposed guarantor, then reconcile each person’s figures to their documents. Use the lender’s application requirements to select document periods and accepted income types. Don’t combine their income into one figure without recording whose income the lender permits it to use.

Evidence	Borrower	Proposed guarantor
Identity and residency	Identity documents, residential address and relevant residency evidence	Their own identity documents and residency evidence
Income	Payslips and salary credits, or tax and business records for self-employed income	Evidence for each income source relied on to meet the guarantee
Living expenses	Transaction statements and a breakdown of household expenses	Their own expenses and share of household costs
Existing debts	Loan statements, credit-card limits and other repayment commitments	Their own debts, plus existing guarantees and contingent liabilities
Credit history	Credit-report consent, default explanations and evidence of payment arrangements	Separate consent and evidence addressing their credit position
Security and purpose	Vehicle invoice, ownership details and insurance where required	Evidence of any asset proposed to secure the guarantee
Signed documents	Loan agreement and relevant consents	Guarantee, required disclosures and any required legal-advice certificate

A guarantor’s available income is what remains after their own commitments, not their gross salary. Resolve a mismatch between payslips and bank credits before presenting the figure to the lender. For defaults, record what happened and whether the debt remains payable.

ASIC’s credit disclosure guidance sets out credit guides, quotes and proposal documents for the relevant licensed role. Keep these borrower disclosures separate from the guarantee documents. One doesn’t replace the other.

Compare Alternatives to a Guarantor

Compare routes that meet the client’s purpose without transferring unnecessary debt risk to a family member. The personal-loan lender comparison covers options assessed without a guarantor.

Route	When it helps	What to weigh
Secured loan in the client’s name	An acceptable car or other asset supports the loan	The borrower still needs affordable repayments, and the asset can be repossessed
Smaller loan or cheaper car	A lower amount brings repayments within the client’s budget	Whether the purchase still meets the client’s transport or other purpose
Genuine co-borrowing	Both applicants benefit and accept direct liability	Each can owe the whole debt. Adding a name solely to obtain approval exposes that person
Wait and rebuild the credit position	The purchase can wait while debts and repayment problems are addressed	Correct inaccurate records, resolve arrears and build a documented repayment history
Guarantor arrangement	The lender accepts the structure and both parties understand its consequences	The guarantee’s scope, the guarantor’s capacity and the route to release

In a fictional file, a client needs reliable transport but cannot afford the proposed loan for a $25,000 car. A cheaper car could reduce the loan without exposing a parent’s finances. Adding the parent as guarantor leaves the original affordability problem in place.

Record the purchase purpose and the repayment calculation for each realistic option. Explain why the chosen route meets the client’s needs, what risk the helper accepts and which lender conditions remain. Proceed only with a structure the lender accepts and obligations both parties understand.