Guarantor Home Loans Explained: What Every Homebuyer Needs to Know

This article is by Kelly Brothers Finance, North Brisbane's Finance Brokers.
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Queensland’s property market has been climbing steadily, with Brisbane and the regions seeing surging house prices and fierce buyer competition. For many aspiring homeowners, raising a hefty deposit, grappling with lenders mortgage insurance and keeping up with shifting interest rates can feel like an uphill battle when applying for a mortgage. 


That’s where guarantor home loans can help. By allowing a family member to contribute their existing home equity or term deposit as security, these loans reduce the upfront funds required and may ease the path to home ownership in today’s market.


With property values rising, understanding how a guarantor home loan works could make all the difference. Let’s explore what these loans involve and whether they’re right for you.



Tap into family equity with confidence.
Our Brisbane mortgage brokers at Kelly Brothers Finance will tailor a guarantor home loan strategy that fits your goals and budget. Reach out on (07) 3847 9450 or visit www.kellybrothersfinance.com.au to get started.


What Is a Guarantor Home Loan?


A guarantor home loan is a type of mortgage where a family member, often a parent, agrees to back your loan by offering their existing home equity or a term deposit as extra security. This support reduces the amount of money you need to place upfront, since the lender can call on the guarantor’s assets if repayments fall behind.


In contrast, a standard home loan relies entirely on your own deposit (usually 20% of the purchase price) and your personal income and credit history. With no guarantor involved, you must meet the lender’s deposit requirement, and you’ll almost always pay lenders mortgage insurance (LMI) if your deposit is under the 20% threshold.


Guarantor home loans are particularly popular with first home buyers or those with a modest deposit. They provide access to the property market without the longer wait and higher costs often associated with a conventional mortgage.


Here’s a sample scenario.


  • Buyer: Emma wants to purchase a $500,000 home.

  • Deposit on hand: $25,000 (5% of purchase price).

  • Guarantor: Emma’s mother, Claire, agrees to guarantee up to 15% ($75,000) of the loan using her home equity.

  • Result: Lender treats Emma’s total deposit as $100,000 (Emma’s $25,000 + Claire’s $75,000), so her effective LVR is 80% instead of 95%.

Sample Calculation Breakdown


  1. Purchase price: $500,000

  2. Borrower’s cash deposit: $25,000 (5%)

  3. Loan before guarantee: $500,000 – $25,000 = $475,000 (95% LVR)

  4. Guarantor’s equity pledge: $75,000 (15%)

  5. Effective total deposit: $25,000 + $75,000 = $100,000 (20%)

  6. Net LVR after guarantee: ($500,000 – $100,000) ÷ $500,000 = 80%


By reducing the LVR to 80%, Emma avoids the LMI and may secure a better interest rate.



Trying to avoid hefty lenders mortgage insurance?
Our Brisbane mortgage brokers at Kelly Brothers Finance will structure your guarantor home loan to reduce LMI and secure the best interest rates. Book your free consultation now on (07) 3847 9450 or via www.kellybrothersfinance.com.au.


Guarantor Home Loan Eligibility Requirements


Both borrower and guarantor must meet specific criteria before approval. Lenders assess personal, financial and property details to ensure the loan is secure:


  • Who can act as guarantor: An immediate adult relative (parent, sibling or close family member) who owns property or holds a term deposit in Australia.

  • Home equity or term-deposit security: The guarantor’s asset must cover the shortfall deposit, typically enough equity to bring your loan-to-value ratio (LVR) down under the lender’s maximum.

  • Loan-to-value ratio (LVR): With a guarantor you may reach up to 95% LVR; without one, most lenders cap at 80% before LMI applies.

  • Credit history and score: Both borrower and guarantor need a solid credit report and meet the lender’s minimum credit-score requirements.

  • Income and serviceability: You’ll provide pay slips, tax returns or employment details; some lenders also check the guarantor’s ability to cover repayments if needed.

  • Property type and valuation: The chosen home must fit the lender’s criteria (e.g. no exotic builds) and pass a formal valuation to confirm its market value.

  • Documentation: Prepare photo ID, proof of address, payslips, valuation reports, Home Buyer Declaration, Statutory Declaration and Discharge/Refinance authority for the guarantor.

  • Independent advice: Most lenders insist on separate legal and financial advice for guarantors, ensuring they understand the risks and Terms and Conditions.

  • Participating-lender and scheme rules: If you’re using a government initiative (First Home Guarantee, Family Home Guarantee, Regional First Home Buyer Guarantee), confirm your lender is on the approved list and check any extra steps.


Check Your Eligibility Today.
Unsure if you qualify for a guarantor home loan? Our Brisbane mortgage brokers will review your deposit, LVR and family guarantee options in one quick chat. Call (07) 3847 9450 or visit www.kellybrothersfinance.com.au.


How to Apply for a Guarantor Home Loan


Ready to take the next step? Here’s a clear road map, with your broker and guarantor onboard, to turn your home ownership dream into reality:


1. Engage a mortgage broker


An expert broker, such as the team at Kelly Brothers Finance, matches you with lenders specialising in guarantor home loans and navigates family guarantee schemes. They handle both your and your guarantor’s requirements, saving you time and simplifying comparisons of interest rates, fees and government incentives.


2. Obtain pre-approval


Provide your income, credit history and deposit outline, including your guarantor’s equity or term deposit, to get a borrowing estimate. Pre-approval costs $200–$600 and takes 1–3 business days, giving you confidence when house hunting.


3. Gather documentation


Gather photo ID, payslips, bank statements, valuation reports and a Home Buyer Declaration, plus your guarantor’s ID, valuation or term deposit statements and proof of their legal advice to avoid delays.


4. Compare loan offers


Compare LVR-based interest tiers, ongoing fees, valuation and legal costs, and scheme eligibility with your broker; a side-by-side view reveals the cheapest Principal and Interest or Interest-only repayments and flags hidden charges.


5. Submit your formal application


Submit your completed application with all borrower and guarantor documents, including the guarantor’s Statutory Declaration and Discharge/Refinance authority if required. Lenders typically take 5–10 business days to review credit files, arrange a valuation and verify the guarantor’s independent advice.


6. From conditional to unconditional approval


You’ll get conditional approval after valuation and legal checks. Once you’ve paid stamp duty, arranged insurance and confirmed your guarantor’s legal advice, you’ll receive unconditional approval and a settlement date in 4–8 weeks.


By following these steps with a trusted broker and your guarantor fully informed, you’ll streamline the application process, control costs, and secure your loan more efficiently.



Benefits and Risks of Guarantor Home Loans


Before making a decision, it helps to see the upside and downside at a glance. Here are the key benefits and risks of guarantor home loans:


Benefits:


  • Lower deposit required

  • Reduced or no Lenders Mortgage Insurance

  • Access to better interest rates

  • Faster entry onto the property ladder

Risks:


  • Guarantor liable if repayments default

  • Potential loss of guarantor’s home equity

  • Impact on both borrower’s and guarantor’s credit scores

  • Possible legal fees and administrative costs



Ready to fast-track your first home purchase?
Our Brisbane mortgage brokers at Kelly Brothers Finance specialise in guarantor home loans and will match you with lenders who accept family guarantees. Call us on (07) 3847 9450 or visit www.kellybrothersfinance.com.au.


Frequently Asked Questions (FAQs)


What are the rules for loan guarantors?


Guarantors must meet the lender’s credit requirements and sign the loan contract, using their home equity or term deposit as security. They share liability for mortgage repayments if you default, so while they help you get a home loan faster with a smaller house deposit, they must weigh the risks and long-term financial commitments.


How much more can I borrow with a guarantor mortgage?


A guarantor can help you borrow up to 95% of the property value, slashing your house deposit and speeding up your loan approval. Just watch for rising property prices and larger repayments, and see if government schemes can lift your borrowing power further.


Can I borrow 100% of the purchase price of a home with a guarantor?


Most lenders cap LVR at 95%, so 100% borrowing is rare. Schemes like the Home Guarantee Scheme can cover the full price under strict conditions; just be sure to check your loan contract and consider the impact on your application and future ownership.


Can you get a guarantor for an investment property loan?


Generally, guarantors are restricted to owner-occupier loans, not investment properties, since lenders focus on primary residence security. If you explore investment lending, expect tougher credit requirements and fewer participating lenders under those government schemes.


How long does the guarantor stay on the loan?


The guarantor stays on until your LVR drops below the lender’s threshold—usually 80%—and you refinance. Then you can apply to remove them, restoring their full ownership and reducing their risk.



Final Thoughts


Almost everyone dreams of owning their own slice of Queensland, and a guarantor home loan could be just the boost you need to climb the property ladder sooner. Remember, leaning on a family member’s equity eases your upfront costs but comes with real responsibilities for both of you. 


Take a moment to weigh the benefits against the risks, then reach out for a free consultation. Our Brisbane mortgage brokers cover the wider region and are here to answer your questions, clarify your options and tailor a plan that fits your goals. 


Ready to chat? Call Kelly Brothers Finance on
(07) 3847 9450 or visit www.kellybrothersfinance.com.au to get started today.

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