TL;DR — Key takeaways
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Saving a 20% deposit while paying rent is one of the hardest financial challenges facing Australians today. A guarantor home loan is one of the most practical ways to get into the market sooner — without needing a large deposit and without paying Lender’s Mortgage Insurance (LMI).
But it’s not without risk — for you or for your guarantor. Here’s exactly how it works, who qualifies, and what every family needs to understand before agreeing to one.
What is a guarantor home loan?
A guarantor home loan is a home loan where a third party — usually a parent or close family member — uses the equity in their own property as additional security for your loan. This reduces the lender’s risk, allowing you to borrow more than your deposit alone would normally support.
The guarantor doesn’t hand over cash or go on the title of your property. They simply agree to be legally responsible for a portion of the loan if you can’t make your repayments. According to MoneySmart’s definition, a guarantor is legally responsible for paying the other person’s debts if the borrower can’t pay them.
In plain terms: Your parents use the equity in their home to act as a safety net for your loan. You get into the property market sooner. They don’t contribute cash, but they do put their own home on the line. That’s a commitment both sides need to understand fully before proceeding.
How does a guarantor home loan work?
Here’s the typical structure of a guarantor arrangement for a first home buyer in Australia.
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What are the benefits of a guarantor loan?
For the borrower Buy sooner with less Enter the market with little or no deposit. Avoid paying LMI entirely. No need to spend years saving a 20% deposit while property prices potentially rise out of reach. |
For the guarantor Help without handing over cash Parents can help their children into home ownership using equity they’ve already built — without needing to give them a cash gift or drain their savings. |
What are the risks?
A guarantor arrangement is not something to enter lightly. MoneySmart warns that guarantors should treat it like taking out the loan themselves. The risks are real on both sides.
A Rateseeker broker will model your exact scenario — showing what you can borrow, what your repayments will be, and a clear exit plan for releasing the guarantee. Book a free 15-minute chat before approaching your parents about a guarantor arrangement.
Who can be a guarantor?
Most lenders restrict guarantors to immediate family members. The exact rules vary by lender, but the general requirements are consistent.
How much can a guarantor help you borrow?
The guarantee covers the gap between your deposit and the 20% threshold — it doesn’t have to cover the entire loan. This is called a limited guarantee, and most lenders prefer it over an unlimited one because it limits the guarantor’s exposure.
Example: You want to buy a $700,000 home. You have a $35,000 deposit (5%). The 20% threshold is $140,000. The gap is $105,000 — that’s the amount your guarantor would need to cover with their equity. Your guarantor doesn’t guarantee the full $665,000 loan. A limited guarantee of $105,000 is all that’s required, and it’s secured against their property.
Always push for a limited guarantee rather than an unlimited one. A broker can negotiate the structure on your behalf and ensure the guarantee is as narrow as possible to protect your guarantor. See how Rateseeker approaches home loan structuring.
How to remove the guarantee
The guarantee is not permanent. Once you’ve built enough equity in your property — usually when your LVR falls to 80% or below — you can apply to the lender to release it. This frees your guarantor’s property from being used as security.
Path 1 Make extra repayments Pay down your loan faster to build equity quickly. Even small additional payments make a real difference over time. |
Path 2 Property value rises If your property value increases, your LVR drops automatically. A new valuation may show you’ve already crossed the 80% threshold. |
Path 3 Both combined The fastest path is a combination — regular repayments plus rising property values. Most buyers release a guarantee within 3–7 years. |
Guarantor loan vs First Home Guarantee — what’s the difference?
Both options let you buy with a smaller deposit and avoid LMI — but they work very differently. The First Home Guarantee (administered by Housing Australia) is a government scheme, not a family arrangement. Here’s how they compare:
Which is better for you? If you earn above the income cap or want to buy above the property price cap, a guarantor loan is your only no-LMI option. If you qualify for the First Home Guarantee, it may be the cleaner choice — no family risk involved. Your broker can run both scenarios side by side. Talk to a Rateseeker broker to find out which suits your situation.
Frequently asked questions
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