A guarantor home loan lets a family member, usually a parent, secure part of your loan against their own property, so you can buy with little or no deposit and often avoid Lenders Mortgage Insurance. The main advantage is getting into the market sooner. The main risk is that the guarantor is legally liable for the guaranteed portion, so they should get independent legal advice.
Written by Ross McFarlane, Licensed Mortgage Broker (Credit Representative 526725). About the authorA guarantor home loan can be the difference between buying now and waiting years to save a deposit, which is why it is so commonly used by first home buyers. It also places a real obligation on a family member, so it deserves a clear eyed look at both sides. Here are the genuine pros and cons.
In a guarantor loan, a family member, usually a parent, offers part of their own property as additional security for your loan. This lifts your effective security to the equivalent of a larger deposit, so you can borrow with little or no deposit of your own and often without Lenders Mortgage Insurance. The guarantor does not usually give you cash, they pledge security.
The main advantage is getting into the market sooner, without waiting years to save a full deposit, and often avoiding the Lenders Mortgage Insurance premium. For buyers who can comfortably service a loan but cannot quickly save a deposit, a guarantor can bring forward home ownership by a long time, which can be valuable if prices are rising.
The central downside is that the guarantor is legally responsible for the guaranteed portion of the loan. If you cannot repay, the lender can call on the guarantor, and in the worst case their property is at risk. This is a serious obligation, not a formality, so the guarantor needs to understand exactly what they are agreeing to.
Acting as guarantor can affect the guarantor own borrowing capacity, because the guarantee is a commitment lenders take into account. It can also create family tension if things go wrong. These are real considerations for the guarantor, alongside the financial risk, and they are part of why the decision should not be rushed.
Lenders generally require, and it is strongly advisable, that the guarantor gets independent legal advice before signing, so they understand the obligation fully and are not pressured. This protects the guarantor and ensures the arrangement is entered into with full knowledge. It is not a step to skip.
A guarantee is not necessarily forever. Once you have built enough equity in your property, through repayments and any value growth, so that your loan to value ratio falls to a level the lender is comfortable with, the guarantee can often be released and the guarantor security removed. Having a clear path to release is part of a sensible arrangement.
A guarantor loan suits a borrower who can comfortably afford the repayments but lacks the deposit, with a family member who genuinely understands and accepts the risk. It is less suitable where the borrower repayments would be a stretch, because that is exactly the situation where the guarantor obligation could be called on.
Because a guarantor loan involves two parties and a real obligation, it is worth planning carefully and openly. A broker can explain how the structure works, what the guarantor is committing to, and the path to releasing the guarantee, usually at no cost to you, and the guarantor should get independent legal advice before proceeding.
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A family member, usually a parent, offers part of their own property as additional security for your loan. This lifts your effective security so you can buy with little or no deposit and often avoid Lenders Mortgage Insurance.
The guarantor is legally responsible for the guaranteed portion of the loan. If you cannot repay, the lender can call on the guarantor, and in the worst case their property is at risk. It is a serious obligation.
Usually yes. Once you have built enough equity so your loan to value ratio falls to a level the lender is comfortable with, the guarantee can often be released and the guarantor security removed.
Yes. Lenders generally require, and it is strongly advisable, that the guarantor gets independent legal advice before signing, so they fully understand the obligation and are not pressured.
Last reviewed: June 2026
General information only. This page provides general information about home loans and is not financial or credit advice, a quote, or a guarantee, and your personal circumstances have not been considered. Lending policies, interest rates, fees and eligibility vary by lender and change over time. Always confirm your own situation with a licensed mortgage broker or lender before acting. Ross McFarlane (Credit Representative 526725) is an authorised Credit Representative of Australian Associated Advisers Pty Ltd t/a Keylend, Australian Credit Licence 392169.