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Guarantor and family guarantee loans, handled carefully

Guarantor and family guarantee loans in Australia: how they work, the risks for the guarantor and how Ownright arranges them sensibly.

Updated 13 October 2026 · Ownright Custom Finance editorial team

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Quick answer

A guarantor loan lets a family member or other person back a borrower's loan, using their income or property as extra security. It can help with a smaller deposit or a thin file, but the guarantor can be liable if repayments stop. Ownright Custom Finance arranges guarantor and family guarantee loans Australia-wide.

Key points

  • A guarantor backs the loan with their own income or property
  • The guarantor may have to repay if the borrower cannot
  • A limited guarantee can cap the exposure, but the security may still be at risk
  • Independent legal advice is strongly worth having for the guarantor
Suits
Buyers with a small deposit, thin file or limited income
Security
The borrower's property plus the guarantor's property or income
Key people
Borrower, guarantor, sometimes a solicitor
Australia-wide
Yes

What is a guarantor or family guarantee loan?

A guarantor loan is a loan where someone other than the borrower promises to cover the debt if the borrower cannot. The guarantor is often a parent, but could be another relative or, in some cases, a close associate. The lender uses the guarantor’s income, assets or both as extra support.

A family guarantee often takes the form of equity in the guarantor’s own home being used as additional security. This can reduce or replace the deposit the borrower would otherwise need. The borrower gets into a property sooner, the lender sees more security and the guarantor takes on a commitment that deserves serious thought.

What does the guarantor take on?

MoneySmart, ASIC’s consumer site, is blunt about this: treat a guarantee as if you were taking out the loan yourself. The key points it makes are:

  • The guarantor may have to repay the whole loan plus interest if the borrower cannot
  • An asset used as security, such as the guarantor’s home, may be at risk
  • A guarantee can make it harder for the guarantor to borrow later
  • Not repaying can strain family relationships

Those are not reasons to avoid guarantees. They are reasons to approach them with open eyes and good advice. For a plain-English explainer, see our guide to guarantors.

Full guarantee or limited guarantee?

Feature Full guarantee Limited guarantee
What the guarantor covers The whole debt, interest, fees and charges A capped portion
Risk to the guarantor Higher Lower, though the security asset may still be at risk
Lender appetite Widely available Offered by some lenders, often for property purchases
Release Depends on the lender Often tied to the borrower repaying down or building equity

Ask the lender to confirm exactly how much the guarantor could owe, when that amount may reduce and when the guarantee ends. Open-ended facilities such as overdrafts carry extra risk because there is no fixed end date.

Who does a guarantor loan suit?

  • Buyers with a small deposit but a solid income
  • Younger borrowers with a short work history
  • People rebuilding after a rough patch whose families are willing to help
  • Self-employed borrowers whose paperwork is thin
  • Families that want to help but want the arrangement properly documented

It does not suit situations where the guarantor cannot realistically cover the loan, where the family relationship is fragile or where the borrower’s income is too uncertain. In those cases, other routes may be wiser. Our pages on low deposit home loans and first home buyer loans show some of them.

What do lenders look at?

  • The borrower. Income, expenses, credit history and employment.
  • The guarantor. Income, existing debts, the property used as security and credit history.
  • The security. Value, location and type of each property.
  • Independent advice. Many lenders require the guarantor to have independent legal advice and may ask for a certificate that it took place.
  • The structure. Whether the guarantee is full or limited, and what happens when equity builds.

How does Ownright approach guarantor loans?

Ownright Custom Finance looks for solutions that work for everyone around the table. Trevor Scott has more than forty years in finance, and the team works Australia-wide.

We start by talking to both sides. We explain how the structure works, what the guarantor is agreeing to and how each lender treats it. We then approach lenders suited to the borrower and the guarantor, flag the questions the guarantor should raise with their own solicitor and help plan for the day the borrower stands alone. Where a guarantor loan is not the best answer, we say so and show alternatives.

Illustrative example

An illustrative first home buyer has a good income and a modest deposit. Their parents own their home outright and want to help. A broker explains a limited guarantee that covers a portion of the loan, secured against part of the parents’ equity. The parents meet a solicitor, get independent advice and ask the lender how the guarantee reduces over time. The buyer also plans extra repayments to release the guarantee sooner.

Mistakes to avoid

  • Signing without independent legal advice
  • Not knowing how much the guarantee covers
  • Leaving the guarantee open-ended
  • Assuming release will be automatic
  • Letting the borrower’s budget run too tight
  • Making a family decision under time pressure

Documents to have ready

  • Identification for borrower and guarantor
  • Income evidence for both: payslips, tax returns or business financials
  • Details of the guarantor’s property and any loan on it
  • Bank statements
  • Contract of sale or property details
  • Evidence of deposit and savings

The loan readiness guide helps both parties prepare, and the guarantor home loans page covers the property side in more depth.

What conversation should the family have before going ahead?

A guarantee is a family decision as much as a financial one. Before anyone signs, it helps to talk through a few practical questions in the open.

  • What happens if the borrower loses their job or income drops?
  • How will the guarantor be told if repayments are missed?
  • Is there a plan to release the guarantee, and by when?
  • Does the guarantor have enough of a buffer to cope if the worst happens?
  • Are other family members affected, for example through inheritance plans?

Writing the answers down, even informally, avoids misunderstandings later. A solicitor can help turn them into something firmer. We are happy to join the conversation to explain the lending side in plain English.

What alternatives exist to a guarantor loan?

Not every situation needs a guarantor. Options include saving a little longer, using a government scheme where eligible, looking at lenders with lower deposit requirements, or a private or specialist loan secured against property you already own. Each has trade-offs, and some cost more than a standard loan. If the aim is to reduce the risk to family, those alternatives deserve a look. Our low deposit home loans page explains some routes, and non-bank lenders explained shows how other lenders differ.

What happens if things go wrong?

If a borrower falls behind, the lender will usually contact them first, and in many cases the guarantor too. Early action matters. Talking to the lender about hardship options, refinancing or selling the property before arrears build are all easier than dealing with a default. Free financial counselling is available through the National Debt Helpline, and our page on mortgage arrears help outlines the routes. If you are in the middle of that, reach out sooner rather than later.

Considering a guarantor or family guarantee?

Sounds like you’re looking for a guarantor loan that protects the family as well as the purchase. We’re the lending experts in family-backed finance, so click through and see if you qualify. Everyone is welcome on the phone too: 03 7043 7233.

How it works, step by step

  1. 1

    Step 1

    Tell us about the borrower, the guarantor and the purpose.

  2. 2

    Step 2

    We explain the structure options, including full and limited guarantees.

  3. 3

    Step 3

    We approach lenders that suit the borrower and the guarantor's position.

  4. 4

    Step 4

    The guarantor gets independent advice, documents are signed and the loan proceeds.

Frequently asked questions

What does a guarantor do?

A guarantor agrees to be responsible for a loan if the borrower cannot repay. The lender may rely on the guarantor's income or on property they own as additional security. MoneySmart advises treating it as if you were taking out the loan yourself, because the guarantor can be pursued for the debt.

What are the main risks for a guarantor?

The guarantor may have to repay the loan, interest and fees if the borrower defaults, and their own property can be at risk. It can also affect their ability to borrow later and may strain relationships. Independent legal or financial advice before signing is strongly worthwhile.

What is a limited guarantee?

A limited guarantee caps how much the guarantor can be asked to pay, often a portion of the loan. It may reduce risk compared with a full guarantee, but the guarantor can still lose the property used as security. Ask the lender to confirm the exact amount, when it may reduce and when it ends.

Can a guarantor be released from the guarantee?

Sometimes, for example when the borrower refinances without the guarantor or when equity builds up enough for the lender to agree. There is no automatic right, though. Ask about release conditions before signing, and plan for how the borrower will stand on their own.

Does a guarantor need to be a parent?

No. Lenders often prefer close family, but some accept other relatives or, in certain business situations, associates. The guarantor's income, property and credit history matter, and policies vary. We check which lenders accept the guarantor you have in mind.

Are guarantor loans only for home purchases?

No. Guarantees also appear in business loans, car loans and refinances. The principles are similar, but business guarantees can carry higher risk, and MoneySmart notes responsible lending obligations do not apply to business loans in the same way. Independent advice is especially important there.

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