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Family Security Guarantee

Family can use the equity in their home to help their immediate family buy a home.

This option can:

  • Help home buyers to access the market sooner
  • Help the borrower save money by reducing or avoiding the need to pay Lenders Mortgage Insurance
  • Reduce the borrower’s loan to value ratio (LVR).

How does it work?

The guarantor uses equity from their home to guarantee part of their family member’s loan.

The guarantor is not required to give any cash to the borrower for their deposit. The guarantee is limited and allows the guarantor to choose the amount to commit as security for their family member’s loan.

The guarantor can request to be released when the required loan to value ratio is achieved before the loan is repaid.

It’s critical that the borrower has the budget to afford the loan as the guarantee does not reduce or assist with home loan repayments.

It is also important for the Family member giving the guarantee to understand that in acting as a guarantor, a portion of their property is being used as security for the loan taken out by the borrower. As a result there is a commitment to pay back the amount of the guarantee in the case the borrower defaults.


David is planning to purchase a $500,000 property with a $25,000 deposit (LVR of 95%), which means Lenders Mortgage Insurance (LMI) would be payable due to the high LVR for this loan.

If David’s parents have equity in their home, they could provide a Parental Guarantee of say $75,000 as additional security on the loan, reducing David’s LVR to 80%.

This scenario would mean David can avoid paying Lenders Mortgage Insurance, saving him up to $16,500.


Benefits for the Borrower Benefits for the Guarantor
  • Helps to reduce or avoid Lenders Mortgage Insurance, saving you money
  • Helps you access the market sooner
  • Maximise the amount you can borrow – up to 100% of the purchase price plus costs such as Stamp Duty and Legal Fees
  • Get help from your family member without having to ask them for cash to contribute to your deposit
  • You can act as a guarantor whether your loan is with Westpac or with another financial provider
  • You can nominate a specific amount that you’re comfortable to contribute as security for your family member's loan
  • You can be released when the borrowers loan to value ratio is reduced to the required level
  • You can help your immediate family member buy a home without having to give them cash


  • Family Security Guarantee is available for applicants who are buying their first property, either as an owner occupier or investor. It is also available where the applicant already owns one property although only if they are purchasing as an owner occupier
  • Family Security Guarantee can be provided by parents (or legal guardians), siblings, sons and daughters
  • A single guarantee is able to represent no more than 50% of the guarantor’s security
  • Term deposit can be added as security. 

Which home loans can a Family Security Guarantee be used with?

  • Family Security Guarantee can be used with a range of our home loans – discuss the best option for you with one of our Lending Specialists in a branch or over the phone
  • Family Security Guarantee is available on refinances of existing Home Loans.

What do I need to apply?

  • If you’d like to apply for Family Security Guarantee with your home loan, let us know when we discuss your application
  • Use our home loan application checklist (PDF 403KB) for a list of documents and information to take along to your appointment with our Home Lending Specialist
  • The guarantor will also need to provide some documentation including details on the address for the property they will be providing as security for the loan (e.g. copy of recent council or water rates) as well as a loan statement if they have a loan with another financial institution.
Important Information

Credit criteria, fees, charges, T&C's apply. The guarantor should consider the risks associated with Parental Guarantee, primarily that if the borrower defaults on their loan, the guarantor is liable to pay up to the maximum of the portion of security they have put forward as a guarantee. Westpac advises guarantors obtain independent legal advice.

1. Credit criteria apply to the assessment of the adequacy of any proposed guarantee limit.

2. Equity Access and owner-builder applications are excluded. Other exclusions may apply.

The information on our website is prepared without knowing your personal financial circumstances. Before you act on this general information, please consider if it's right for you. If you need help, call 131 900.