What is a guarantor loan?

A guarantor loan lets a borrower access a mortgage with a smaller deposit by having a family member (typically a parent or close relative) pledge their property as additional security. The guarantor does not lend money directly. Instead, their home equity becomes part of the lender's security position, reducing the lender's risk and allowing the bank or non-bank lender to accept a lower loan-to-value (LTV) ratio than would normally be required.

The key benefit is avoiding or reducing lender's mortgage insurance (LMI). Without a guarantor, Sydney buyers putting down less than 20 percent typically pay LMI premiums, which can add tens of thousands of dollars to the loan. A family guarantee can eliminate this cost by effectively increasing the security behind the mortgage, even if the borrower's own deposit is smaller.

Guarantors hold a legal liability if the borrower defaults, so their home equity is genuinely at risk. Most lenders place restrictions on the guarantor's ability to refinance or borrow against their property during the guarantee period, which usually lasts until the borrower builds sufficient equity to remove the guarantee and refinance independently.

Guarantor loans are popular among first-home buyers in Sydney where property values and deposit requirements are high. Not all lenders offer this product, and terms vary significantly, so comparing available options through a mortgage broker is important.