How Deposit Bonds Work When You Have Your Own Security (and When You Need a Guarantor)
For many buyers, especially First Home Buyers, the hardest part of getting into the market is not servicing the loan – it is coming up with a full 10% cash deposit at exchange. A deposit bond can step in as a substitute for that cash, letting you secure the property now and pay the full amount at settlement instead.
For off‑the‑plan purchases with long build times, deposit bonds can run to a maximum term of up to 66 months, which comfortably covers a 2–3 year project plus contingency. How you qualify depends on whether you already own property or need help from a guarantor.Option 1: You Own Property and Use Your Own Security
If you already own Australian real estate, most deposit bond providers will assess you based on the equity in your existing property or properties.
How equity-based approval works
Underwriters like QBE and HDI Global want to see that, by the time your new purchase settles, you can pay 100% of the purchase price from a combination of your new loan and your own funds. Because they are not actually lending you money, they focus on:
- The amount of equity you hold in Australian property.
- Your maximum intended purchase price and the size of the deposit bond (usually up to 10%).
- The term you need – for off‑the‑plan this can be anywhere from 3 months up to 66 months depending on the provider and property type.
Many providers use simple equity multipliers. For example, for a 2–3 year bond (25–36 months), some policies require net equity of around 4 times the deposit bond amount; longer 37–66 month bonds may require 5–6 times, depending on the insurer and product.
Example: Investor with existing equity
•You own a home worth $900,000 with a $450,000 loan – so about $450,000 equity.
•You are buying an off‑the‑plan apartment for $750,000 with a 10% deposit bond ($75,000).
•For a 30‑month bond, the insurer may require equity of 4 × $75,000 = $300,000.
In this scenario, your existing $450,000 equity is sufficient to support a bond term of up to about 30–36 months, and with some providers, even out to the 66‑month maximum if needed.
You sign an indemnity in favour of the insurer. If you default at settlement and the vendor calls on the bond, the insurer pays the vendor and then has the right to recover that money from you. No caveat is usually taken over your property, but you need to be comfortable that you can complete the purchase and honour that indemnity.
Option 2: First Home Buyers With No Property – Using a Guarantor
First Home Buyers often do not have existing equity, even though their income would easily support the end debt. This is where parental guarantees and other guarantor structures come into play.
How guarantor‑backed deposit bonds work
QBE‑backed providers that specialise in First Home Buyers explicitly allow a parental guarantee to support an application where the FHB has little or no property of their own.
Typical framework:
•The First Home Buyer is the purchaser on the contract.
•One or both parents (or another acceptable family member) act as guarantor.
•The guarantor must show adequate equity in an Australian property – usually their own home or investment property.
•Everyone signs an indemnity and a Deed of Guarantee, giving the insurer recourse to both the buyer and the guarantor if the bond is called.
Crucially, the guarantor does not normally have to refinance their own loan or provide cash up front. Their equity stands behind the guarantee rather than being drawn down on day one.
FHB qualification pathways
QBE and its authorised agents generally offer two broad pathways for First Home Buyers:
1. With finance approval (shorter terms)
- For settlement terms up to around 6 months, a FHB can qualify where there is a formal loan approval from an acceptable lender and at least 5% genuine savings.
- This suits established property or very short off‑the‑plan timeframes.
2. With parental guarantee (medium to long terms – up to 66 months)
- Where there is no formal loan approval yet, or the settlement is more than 6 months away (as with most off‑the‑plan purchases), a FHB can apply with a parental guarantee in place.
- The guarantors must:
- Demonstrate adequate equity in an Australian property.
- Provide proof of ownership (rates notices, mortgage statements) and ID.
- Sign the required guarantee and indemnity documents.
This structure allows a FHB to secure a property well before they have full savings or final loan approval, as long as the “Bank of Mum and Dad” has enough equity to stand behind the bond.
Maximum Term: Up to 66 Months for Off‑the‑Plan
Where the property is off‑the‑plan or under construction, deposit bonds can be issued out to the sunset clause, not just the expected completion date. Many QBE‑issued products explicitly allow contract terms from 3–66 months for most residential and commercial property types.
Why this matters:
- Most OTP projects in Australia run on 24–36 month construction timelines.
- Developers often include a sunset clause beyond that to allow for delays, commonly 42–60+ months.
- A bond written to 66 months gives you a comfortable buffer in case the build runs over time, without having to re‑apply mid‑project.
For First Home Buyers using a guarantor, policies exist specifically to support terms up to 66 months as long as the combination of income servicing capacity and guarantor equity satisfies
QBE’s credit criteria – Key Risks and Responsibilities (for Buyers and Guarantors)
Whether you are using your own equity or a guarantor’s, it is vital to understand that a deposit bond is a guarantee, not a grant.
- If settlement goes ahead as planned, the bond simply expires, and your one‑off fee is the total cost.
- If you default at settlement and the vendor calls on the bond:
- The insurer pays the vendor the deposit amount.
- The insurer then seeks to recover that full amount from the buyer and any guarantors.
For guarantors, that means:
- Their home is not automatically mortgaged for the bond, but they are legally liable under the guarantee.
- If the insurer has to pay out, it can pursue them personally, which may ultimately require them to refinance or sell assets to meet the shortfall.
Both buyers and guarantors should obtain independent legal advice to fully understand their obligations before signing.
When a Long‑Term Deposit Bond Makes Sense
A long‑term deposit bond (out to 66 months) can be a powerful tool in a few scenarios:
- Upgraders or investors with strong equity who want to keep cash free for other projects until settlement.
- First Home Buyers who have solid income and are taking advantage of government guarantee schemes, but lack cash for a 10% deposit now and have parents with sufficient equity.
- Buyers wanting to lock in a property price today while a new build or land release is completed over the next 2–4 years.
The key is structuring the application correctly – deciding whether to lean on your own equity, a guarantor, or a combination of both – and making sure the bond term matches the sunset clause, not just the builder’s best‑case completion date.
