Guarantor Home Loans: How They Work (and the Risks)

🤝 How a guarantor loan actually works🔗

Instead of relying purely on your own deposit, a guarantor offers a portion of the equity in their own property as additional security for your loan. This typically lets you borrow with a smaller deposit, or none at all, while still avoiding LMI, since the guarantee covers the risk that would otherwise trigger it.

Crucially, the guarantor isn't handing over cash, and they don't automatically become an owner of your property. They're putting their own home on the line as security for a specific, usually limited, portion of your debt.

Going guarantor is just one of several ways parents help their kids buy property, cash gifts, family loans and co-ownership are the other common paths, each with very different risks. See our guide to the bank of mum and dad in Australia for how all four structures compare.

✍️ What the guarantor is actually agreeing to🔗

It's a formal legal agreement between the borrower, the guarantor, and the bank, not an informal favour. Both the borrower and the guarantor are strongly encouraged, and often required, to get independent legal advice before signing.

⚠️ The real risks, for the guarantor🔗

🛡️ What banks are actually required to do for the guarantor🔗

🎯 The essential: A guarantor has specific, enforceable protections under the Banking Code of Practice, not just a general recommendation to "get advice."

Because so much can ride on a guarantee, banks that subscribe to the Banking Code of Practice, effectively all the major lenders, have specific, mandatory obligations to a proposed guarantor before a guarantee can be accepted. The bank must give the guarantor a prominent, separate notice recommending they get independent legal and financial advice, must confirm they understand the loan they're guaranteeing, must clearly tell them they're entitled to refuse, and must take reasonable steps to discuss the guarantor's obligations with them directly, in person, by phone or by video, separately from the borrower rather than only through the borrower.

A guarantor also gets a mandatory three-day cooling-off period after receiving the loan information, before the bank can formally accept the guarantee, time specifically built in to get that independent advice rather than sign under pressure in the same meeting the paperwork is presented. None of this makes the underlying risk disappear, but it means a guarantor isn't relying purely on family trust or the borrower's own summary of the loan, there's a real, code-mandated process designed to make sure they understand exactly what they're taking on before it's binding.

🔓 Removing a guarantor later🔗

A guarantee isn't usually meant to be permanent. Once the loan balance falls to around 80% or less of the property's value, through regular repayments, extra repayments, or the property's value growing, the borrower can typically apply to have the guarantee released through a formal review or refinance with the lender. It doesn't happen automatically, it needs to be requested.

🔀 Alternatives worth considering🔗

A guarantor arrangement isn't the only way to get around a smaller deposit. It's worth weighing against simply paying LMI on a low-deposit loan, or checking eligibility for the government's Home Guarantee Scheme, which achieves a similar outcome, avoiding LMI on a small deposit, without putting a family member's property at risk.

Another option entirely is buying with someone else instead of relying on a guarantor: a friend or sibling going in as a co-buyer, rather than a family member putting their own home on the line as security. See our guide to co-buying property in Australia for the ownership structures, the mortgage liability risks, and the agreement you'd need before going down that path.

❓ Frequently asked questions🔗