Guarantor Home Loan Australia 2026 — How It Works

What Is a Guarantor Home Loan?

A guarantor home loan lets a family member — usually a parent — use their property as additional security for your home loan. This means you can buy with a much smaller deposit, sometimes as little as 0–5%, and avoid paying Lenders Mortgage Insurance (LMI) — which typically costs $10,000–$30,000 for first home buyers.

The key thing to understand: your guarantor does not give you money. They don't hand over cash or take on your loan repayments. Instead, they offer a portion of the equity in their own property as additional security for your lender. Think of it as your parents vouching for you — except with real property on the line.

Guarantor home loans are one of the most popular ways Australians get into the property market sooner. If saving a full 20% deposit feels like chasing a moving target — house prices keep rising while you're saving — a guarantor arrangement can bridge that gap.

How Does a Guarantor Home Loan Actually Work?

Here's the step-by-step process:

1. You apply for a home loan — just like a normal application, based on your income and borrowing capacity
2. You nominate a guarantor — usually a parent who owns property
3. The lender assesses both of you — your ability to repay, and your guarantor's property and financial position
4. The lender takes a limited guarantee — a second mortgage is placed over a portion of the guarantor's property, covering the gap between your deposit and 20%
5. You settle and move in — you make all the repayments, and your guarantor's involvement is purely security-based

The guarantee only covers the gap between your deposit and 20% — not the full loan amount. This is a critical point that many people misunderstand.

Example: You're buying a $600,000 home with a $30,000 deposit (5%).

• Your loan amount: $570,000
• 20% of the purchase price: $120,000
• Your deposit covers: $30,000 (5%)
• The gap: $120,000 − $30,000 = $90,000
• The lender takes a $90,000 guarantee over your parent's property
• Because the lender now has 20% security, you pay no LMI

On a $570,000 loan, LMI would typically cost $15,000–$22,000. That's real money saved — money that stays in your pocket or goes toward your mortgage instead.

How Much Can You Borrow with a Guarantor?

One of the biggest misconceptions about guarantor loans is that your parents' income or assets boost your borrowing power. They don't. Your borrowing power is based entirely on your own income, expenses, and debts — the guarantee only changes how much deposit you need, not how much you can borrow.

What the guarantee does change is the loan-to-value ratio (LVR) you can qualify for. Without a guarantor, most lenders cap you at 80% LVR before LMI kicks in (or 95% LVR with LMI). With a guarantor, you can borrow up to 100% LVR — and with some lenders, up to 105% LVR — because the guarantee effectively tops your security up to 20%.

The extra 5% (taking you to 105%) is typically reserved for covering stamp duty, conveyancing fees, and other upfront costs. Not every lender offers 105% — a mortgage broker will know which ones do.

Worked example — usable equity calculation:

Your parents own a home worth $850,000 with a $250,000 mortgage remaining. Here's what lenders will consider "usable equity":

• Property value: $850,000
• Lender's 80% ceiling: $850,000 × 80% = $680,000
• Existing mortgage: $250,000
• Usable equity available for guarantee: $680,000 − $250,000 = $430,000

That $430,000 is the maximum your parents could theoretically guarantee — but you'd rarely use all of it. For a $600,000 property purchase, you'd only need a $90,000 guarantee (the gap between a 5% deposit and 20%). Your parents' remaining $340,000 of usable equity stays untouched.

To find your own maximum borrowing capacity, use our borrowing power calculator — it factors in your income, HECS, and expenses so you get a real number, not a rule-of-thumb multiple.

Who Can Be a Guarantor?

Not just anyone can guarantee your home loan. Lenders have specific requirements:

• Family members only — parents are the most common, but some lenders accept siblings, grandparents, or adult children. A friend or partner's parent typically won't be accepted
• Must own property — with enough equity to cover the guarantee amount. If your parents' home is worth $800,000 with a $300,000 mortgage, they have $500,000 in equity — more than enough for most guarantees
• Stable financial position — some lenders require the guarantor to demonstrate income, not just equity. This varies between lenders, which is why using a mortgage broker who knows each lender's criteria is valuable
• Independent legal advice is mandatory — every guarantor must see a solicitor independently (separate from yours) before signing. This protects both parties and is a legal requirement

What Are the Risks for Your Guarantor?

This is the section you need to read carefully — and the one your parents should read too.

Risk 1: If you can't make repayments, the lender can claim against the guarantor's property. If you default on your loan and the sale of your property doesn't cover the debt, the lender can pursue the guaranteed amount against your parent's property. In the worst case, this could mean your parents are forced to sell their home.

Risk 2: Your guarantor's borrowing capacity is reduced. While the guarantee is active, the guaranteed amount is treated as a liability on your parent's finances. If they want to refinance, buy an investment property, or take out another loan, the guarantee will reduce what they can borrow.

Risk 3: Relationship strain. Money and family is always complicated. If financial stress hits, having a formal financial arrangement between parent and child can add pressure to an already difficult situation.

The good news: Most guarantor arrangements use a limited guarantee — capped at a specific dollar amount (e.g., $90,000 in our example), not the full loan. This means your parent's exposure is contained. And most guarantors are released within 2–5 years once you've built enough equity.

Limited Guarantee vs Full Guarantee — Always Insist on Limited

This is the single most important structural decision in a guarantor home loan — and one your parents' solicitor should lock in before anything is signed. There are two types of guarantee, and the difference between them is enormous.

Limited guarantee — the guarantee is capped at a specific dollar amount, usually the exact gap between your deposit and 20% of the purchase price. In our earlier worked example, that cap was $90,000. If you default and the lender sells your property, the guarantor's liability is limited to that capped figure, even if the shortfall after sale is larger.

Full (unlimited) guarantee — the guarantor effectively guarantees the entire loan. If you borrowed $570,000 and the property sells short by $150,000, the lender can pursue your parents for the full $150,000 — not just the $90,000 gap. In the worst case, the full loan amount is on the line.

What should be documented:

• The exact dollar amount of the guarantee (e.g., "$90,000")
• The specific property being used as security (address + title reference)
• Release conditions — typically once the loan hits 80% LVR
• Any fees for releasing the guarantee down the track

Your parent's independent solicitor should check every one of these points before signing. If any of them are vague or missing, the arrangement isn't ready to execute.

How to Release Your Guarantor

A guarantor arrangement isn't forever. Once you've built enough equity in your property, you can apply to have the guarantee removed. Here's how:

1. Pay down your loan to 80% LVR. LVR (Loan-to-Value Ratio) is your loan balance divided by your property's value. Once your LVR drops to 80% or below, you no longer need the guarantee — the lender has sufficient security from your property alone.

2. Property value increases help. You don't have to pay down the loan purely through repayments. If your property increases in value, your LVR drops automatically. For example, if you bought at $600,000 and the property is now worth $700,000, your $540,000 loan balance is now 77% LVR — below the 80% threshold.

3. Request a formal release. Contact your lender and request a guarantor release. They'll order a property valuation to confirm your LVR. Some lenders charge a small fee ($200–$500), others do it for free.

Typical timeline: Most first home buyers can release their guarantor within 2–5 years. If you bought in a growth area and made consistent repayments, it could be sooner.

Guarantor Loan vs First Home Guarantee — Which Is Better?

The Australian Government's First Home Guarantee (previously the First Home Loan Deposit Scheme) lets you buy with as little as 5% deposit without LMI — the government acts as your guarantor instead of a family member. So how does it compare?

Bottom line: Since the First Home Guarantee went uncapped in October 2025 (unlimited places, no income caps), it's the simpler option for most first home buyers — no family risk involved. But if you're buying above the property price caps in your area, a guarantor loan is the clear alternative: same LMI benefit, no government price ceiling.

Check the grants and schemes page to see the current First Home Guarantee price caps in your state.

Guarantor Home Loan with No Deposit

Yes — it's genuinely possible to buy a home in Australia with zero deposit using a guarantor arrangement. Not every lender will do it, but several will.

In a no-deposit guarantor loan, your guarantor covers the entire 20% security gap rather than just the portion above your deposit. On a $600,000 property, that means a guarantee of $120,000 (20% of purchase) instead of $90,000 (the gap above a 5% deposit).

What "no deposit" doesn't mean: it does not mean "no money needed". You still need cash for:

• Stamp duty — even with first home buyer concessions, most states still charge some stamp duty above certain thresholds (check the state-by-state concession thresholds)
• Conveyancing or settlement fees — typically $1,200–$2,500. A good conveyancer is worth every cent
• Building and pest inspection — $400–$900 (see our building & pest inspection guide)
• Lender application and valuation fees — $0–$800 depending on the lender
• Moving costs, basic furniture, utility connections — budget a few thousand extra

Total upfront cash requirement for a "no deposit" purchase is typically $5,000–$25,000 depending on your state and whether first home buyer stamp duty concessions apply. If saving a full 5% deposit plus costs feels out of reach, the no-deposit route via guarantor can still work — but it does require some savings.

Some lenders also allow a 105% LVR loan, which rolls stamp duty and fees into the loan itself. This pushes your total borrowing above the property value, which means higher repayments and a longer time to reach 80% LVR (and release your guarantor). Use it only if you have no realistic alternative.

A mortgage broker will know which lenders are currently offering 100% and 105% guarantor loans — the list changes regularly as lenders adjust their risk settings.

Is a Guarantor Home Loan Right for You?

A guarantor loan might be a good fit if:

• You have stable income and can comfortably afford repayments, but haven't saved a 20% deposit yet
• Your parents (or family member) own property with sufficient equity and are willing to help
• You want to buy sooner rather than spending years saving a full deposit while prices keep rising
• You want to avoid paying $10,000–$30,000 in LMI

It might not be the right fit if:

• Your income is unstable or you're not confident you can meet repayments long-term
• Your parent's property is heavily mortgaged with limited equity
• The family relationship could be strained by a financial arrangement
• You qualify for the First Home Guarantee and it suits your purchase price

The best first step is getting pre-approval — this tells you exactly how much you can borrow, with or without a guarantor, so you can make an informed decision.

Alternatives worth considering before committing to a guarantor loan:

• First Home Super Saver Scheme — save your deposit faster inside super with tax benefits
• Keystart home loans (WA only) — 2% deposit, no LMI, no guarantor needed
• Just paying LMI — if the guarantor route adds too much family stress, paying LMI (around $15,000–$22,000 on a $570,000 loan) may be the cleaner option

Frequently Asked Questions

Can my parents be guarantor for my home loan?

Yes, parents are the most common guarantors for home loans in Australia. They need to own property with sufficient equity to cover the guarantee amount (typically the gap between your deposit and 20% of the purchase price). Both parents will need to get independent legal advice before signing, and the lender will assess their financial position as part of the application. Some lenders also accept siblings or grandparents as guarantors.

How much deposit do I need with a guarantor?

As little as 0–5% depending on the lender. The guarantor covers the gap between your deposit and 20%, which means the lender has enough security to waive Lenders Mortgage Insurance. Most lenders prefer you to contribute at least 5% from genuine savings, but some will accept 0% deposit with a strong guarantor. A mortgage broker can identify which lenders offer the best terms for your deposit level.

How much can I borrow with a guarantor?

With a guarantor, you can typically borrow up to 100% of the property value, and with some lenders up to 105% — the extra 5% covers stamp duty and fees. However, how much you can borrow with a guarantor is based on your own income, expenses, and debts, not your guarantor's. The guarantee only changes your deposit requirement, not your borrowing capacity. Use our borrowing power calculator to get an accurate estimate based on your real financial position.

Can I get a home loan with no deposit using a guarantor?

Yes. A guarantor home loan with no deposit is possible with several Australian lenders — the guarantor covers the full 20% security gap instead of just the amount above your deposit. However, you'll still need cash for stamp duty, conveyancing, building and pest inspection, and moving costs — typically $5,000–$25,000 depending on your state. Some lenders also offer 105% LVR loans that roll stamp duty and fees into the loan itself, but this increases your repayments and extends the time until you can release your guarantor. A mortgage broker will know which lenders currently offer zero-deposit guarantor loans.

Is a guarantor home loan better than the First Home Guarantee?

For most first home buyers, the First Home Guarantee is the better option — you get the same benefit (avoiding LMI with just a 5% deposit) without putting your parents' property at risk. Since October 2025, the scheme has unlimited places and no income caps, so qualifying is much easier than it used to be. A guarantor loan is the better choice when you're buying above the First Home Guarantee's property price caps in your area, or when you want to buy with 0% deposit rather than 5%. Beyond those scenarios, the FHBG is almost always the cleaner path.

What happens if I can't pay my mortgage with a guarantor?

If you default on your home loan, the lender can make a claim on the guarantor's property for the guaranteed amount. In the worst-case scenario, this could force the sale of the guarantor's property. However, most guarantor arrangements use a limited guarantee — capped at a specific dollar amount rather than the full loan — which contains the guarantor's exposure. This is why it's critical that both you and your guarantor fully understand the risks, get independent legal advice, and ensure you can comfortably afford the repayments before proceeding.

How long does a guarantor stay on a home loan?

Typically 2–5 years. Once you've built enough equity in your property to reach 80% LVR (Loan-to-Value Ratio) on your own — through a combination of repayments and property value growth — you can apply to your lender for a formal guarantor release. The lender will order a valuation to confirm your LVR, and if you're at or below 80%, they'll remove the guarantee from your parent's property. Some lenders charge a small fee for this process, while others do it for free.

What's the difference between a limited guarantee and a full guarantee?

A limited guarantee is capped at a specific dollar amount — usually the gap between your deposit and 20% of the purchase price (e.g., $90,000). The guarantor's exposure stops there. A full (unlimited) guarantee exposes the guarantor to the entire loan amount. Always insist on a limited guarantee — every reputable Australian lender offers one. If a lender proposes an unlimited guarantee, walk away. Your parent's solicitor should confirm the exact dollar amount, the property used as security, and the release conditions are all documented in writing before signing.