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Guarantor home loans: what parents are really signing

A family guarantee (often just called a “guarantor loan” in Australia) lets a parent pledge equity in their property to cover the shortfall between your deposit and the 20% threshold. Done right, it’s a legitimate way for a first-home buyer to get in without LMI. Done poorly, it exposes the parents to serious financial risk.

How it works mechanically

On a $800,000 purchase with a $40,000 deposit (5%), you’d normally face:

  • 95% LVR
  • LMI of ~$30,000
  • Rate premium of ~25 bps

With a family guarantee, the parents pledge $120,000 of equity in their home. The total security is now the new property ($800k) plus $120k of the parents’ property = $920k. The $760k loan against $920k security is 82.6% - structured as two sub-loans, one at 80% LVR against the new property (no LMI) and one at ~15% against the parents’ pledged portion.

LMI is avoided entirely, and the rate is the standard 80% LVR rate.

What the parents are actually signing

The guarantor signs a deed creating a second mortgage over their property for the pledged amount. The bank has legal authority to:

  • Demand repayment of the guaranteed amount if you default
  • Enforce the mortgage (sell the parents’ property) to recover the guaranteed amount - though this is a last resort
  • Chase the parents for any shortfall not recovered from the primary security

The guarantee is typically a limited guarantee - capped at a specific dollar figure plus reasonable enforcement costs. Avoid unlimited guarantees, which expose the parents to the full loan.

Release triggers

The guarantee is not forever. It can be released when any of these happen:

  1. You’ve paid down to 80% LVR on the primary property alone. On our example, that’s when the loan gets to $640,000.
  2. The property has appreciated enough. If the primary property rises to $1,000,000, your $760,000 loan is now 76% LVR against the primary alone.
  3. You refinance. A new lender takes on the loan without the guarantee, typically at the same 80% LVR point.

When not to use a family guarantee

  • Parents are still paying their own mortgage. Adding a second mortgage can affect their refinance options and serviceability.
  • Parents plan to move or downsize within 2-3 years. The guarantee must be released before they can sell.
  • Parents’ property has less than 50% equity. The numbers usually don’t work.
  • Family relationships are strained. A guarantee creates an ongoing financial entanglement for 3-7 years. If the relationship is already difficult, this is kerosene.

The conversation to have

Before applying, sit down with the parents and work through three scenarios:

  1. Best case. You pay the loan as scheduled, the guarantee is released in 4-5 years, everyone’s fine.
  2. Bad case. You lose income, can’t pay, and the lender enforces. The parents’ home is at risk. Do they have cash reserves to satisfy the guarantee without losing their home?
  3. Death or disability. What if one of the parents dies or becomes incapacitated during the guarantee period? Does the surviving spouse inherit the guarantee?

Every lender has a template “guarantor information pack” that covers this in plain English. Have the parents read it. Independent legal advice for the guarantor is required by most lenders - don’t skip that step.