Low deposit home loans and lenders mortgage insurance in Australia

The information on this website is general in nature and does not take into account your objectives, financial situation, or needs. Consider seeking personal advice from a licensed adviser before acting on any information.

Saving a full 20% property deposit can be difficult, especially for first home buyers trying to enter an Australian housing market where prices, rent and living costs may all be competing for the same savings. Low deposit home loans can offer a pathway into the market sooner, but they usually involve extra assessment, tighter lender criteria and, in many cases, lenders mortgage insurance.

This guide explains how low deposit home loans work in Australia, what loan to value ratio means, when lenders mortgage insurance may apply, and the questions to consider before deciding whether a smaller deposit is the right approach for your circumstances.

What is a low deposit home loan?

A low deposit home loan is generally a mortgage where the borrower contributes less than the traditional 20% deposit. Instead of waiting until you have a larger deposit, you may apply to borrow a higher proportion of the property value.

For example, a borrower with a smaller deposit may need a loan that covers most of the property purchase price. Some lenders may consider these applications, but approval is not automatic. The lender will still assess your income, expenses, savings history, credit conduct, existing debts, employment situation, property type and overall ability to repay the loan.

If you are still working out whether you may be ready to apply, you can explore general home loan eligibility pathways through Home Loan Finance Online before speaking with a broker or lender.

How loan to value ratio affects low deposit home loans

Loan to value ratio, often shortened to LVR, is one of the key concepts in low deposit borrowing. It compares the amount you want to borrow with the lender's valuation of the property.

The basic formula is:

LVR = loan amount ÷ property value, expressed as a percentage

A lower LVR usually means the borrower has more equity or a larger deposit. A higher LVR means the lender is being asked to fund a larger share of the property value. This can increase the lender's risk, which is why low deposit home loans often face additional conditions.

The lender's valuation may not be the same as the price you agree to pay. If the valuation comes in lower than expected, your effective LVR may be higher, and you may need to contribute more funds, renegotiate or reconsider the purchase.

What is lenders mortgage insurance?

Lenders mortgage insurance, or LMI, is insurance that protects the lender if a borrower defaults and the property sale does not fully repay the loan. It is important to understand that LMI protects the lender, not the borrower.

In Australia, LMI is commonly considered when the loan is above 80% of the property value, although the exact treatment can vary by lender, borrower type, loan purpose and insurer criteria. Some lenders may have different policies for owner-occupiers, investors, first home buyers, guarantor loans or particular property types.

LMI may be charged as an upfront cost, or the lender may allow it to be added to the loan amount. Adding LMI to the loan can reduce the cash needed at settlement, but it also means you may pay interest on that amount over time.

When might lenders mortgage insurance apply?

LMI may apply when the lender considers the loan to carry a higher level of risk because the borrower has a smaller deposit. The key trigger is often the LVR, but it is not the only factor.

A lender or mortgage insurer may look at:

• The size of your deposit: A smaller deposit generally increases the LVR.
• Your savings history: Some lenders may want evidence of genuine savings or consistent financial behaviour.
• Your income and employment: Stable, verifiable income may support the application, but each lender has its own requirements.
• Your existing debts: Credit cards, personal loans, car loans and buy now pay later commitments may affect borrowing capacity.
• Your credit history: Missed payments, defaults or recent credit applications may affect lender appetite.
• The property: Some property types, locations or valuations may attract tighter lending rules.
• The loan purpose: Owner-occupied and investment loans may be assessed differently.

Because LMI is connected to both the borrower and the property, two borrowers with the same deposit amount may receive different outcomes depending on their broader circumstances.

How much does LMI cost?

LMI cost varies and should not be assumed from a single rule of thumb. It can depend on the loan amount, LVR, property value, borrower profile, loan purpose and the lender's arrangements with its mortgage insurer.

As a general principle, LMI tends to increase as the LVR rises because the lender is taking on more exposure relative to the property value. A borrower with a very high LVR may face a higher LMI cost than a borrower who is only slightly below a 20% deposit.

Before committing to a purchase, it can be useful to model repayments under different loan sizes. A home loan calculator can help you estimate how different deposit and loan amount scenarios may affect repayments, although it will not replace a lender's formal assessment or quote.

Other upfront costs can still apply

A deposit is only one part of the cash needed to buy a property. Even if a lender allows a low deposit, you may still need funds for upfront costs such as conveyancing, inspections, government charges, lender fees and moving costs. Some first home buyer concessions or schemes may reduce certain costs for eligible buyers, but rules vary and can change.

LMI should be considered alongside these other costs. If you want a broader overview, see our guide to hidden costs of home loans.

Low deposit home loan options borrowers may consider

There is no single low deposit pathway that suits every borrower. The options available depend on your financial position, the property, lender criteria and any relevant government or family support arrangements.

Saving a larger deposit before applying

The simplest way to reduce LVR is to save a larger deposit. This may reduce or avoid LMI and can give you a stronger buffer for unexpected costs. The trade-off is that waiting longer may delay your purchase and property prices may move during that time.

Applying with a smaller deposit and paying LMI

Some borrowers choose to proceed with a smaller deposit and accept the cost of LMI if it helps them buy earlier. This may be reasonable for some circumstances, but it increases the total cost of borrowing and should be weighed against your budget, stability of income and tolerance for risk.

Using a family guarantor or family security support

Some lenders offer family guarantee or family security arrangements where an eligible family member provides limited security support using equity in their own property. This may reduce the need for LMI in some cases, but it creates serious obligations for the guarantor. If the borrower cannot meet repayments, the guarantor's property may be at risk. Independent legal and financial advice is commonly recommended before entering this type of arrangement.

Exploring first home buyer schemes and concessions

Australian federal, state and territory governments may offer first home buyer grants, stamp duty concessions or guarantee-style schemes for eligible buyers. These programs can have strict criteria, including property price caps, income limits, residency requirements or occupancy rules. Availability and rules can change, so borrowers should check current official information before relying on any scheme.

Comparing lenders with different low deposit policies

Not all lenders assess low deposit applications in the same way. Some may have more flexible policies for particular borrower profiles, while others may restrict higher LVR lending. A mortgage broker may be able to help you understand which lender criteria may be relevant to your situation, but a broker cannot guarantee approval or a particular outcome.

Benefits of a low deposit home loan

A low deposit home loan may help some borrowers access the property market sooner than if they waited to save a full 20% deposit. This can be particularly relevant for first home buyers who have steady income but are finding it difficult to save while paying rent.

Potential benefits may include:

• entering the market sooner if you meet lender criteria;
• keeping some savings available for moving costs or emergencies, where the lender allows this;
• using eligible first home buyer support where available;
• avoiding a longer delay if your personal circumstances support buying now.

These benefits are not guaranteed. They depend on property prices, your borrowing capacity, lender policy, interest rates, upfront costs and your ability to manage repayments over time.

Risks and trade-offs to understand

Borrowing with a smaller deposit can increase risk. Because you start with less equity, there is less buffer if property values fall or if you need to sell earlier than expected. You may also have a larger loan balance, higher repayments and additional costs from LMI.

Key risks include:

• Higher total borrowing cost: LMI and a larger loan balance can increase the overall cost of the loan.
• Less equity at the start: A small deposit means your ownership buffer is thinner in the early years.
• Greater sensitivity to rate changes: If repayments are already stretched, an interest rate rise may create pressure.
• Potential difficulty refinancing: If your LVR remains high, refinancing options may be more limited.
• Property valuation risk: A lower-than-expected valuation can affect approval or require extra funds.

A low deposit home loan should be considered as part of a realistic household budget, not just as a way to get approved for a purchase.

Questions to ask before applying for a low deposit home loan

Before you apply, it may help to work through the following questions:

• What deposit can I contribute after allowing for upfront costs and an emergency buffer?
• What will my LVR be based on the lender's valuation, not just the purchase price?
• Is LMI likely to apply, and will it be paid upfront or added to the loan?
• How would repayments change if interest rates increased?
• Do I have genuine savings or other evidence the lender may require?
• Am I relying on any first home buyer scheme, and have I checked the current rules?
• If using a guarantor, does the guarantor understand the risks and obligations?
• Would waiting and saving a larger deposit put me in a stronger position?

The bottom line

Low deposit home loans can help eligible Australian borrowers buy with less than a 20% deposit, but they are not a shortcut around lender assessment. Lenders will still consider your income, expenses, credit history, savings behaviour, property type and ability to repay.

Lenders mortgage insurance may apply when your LVR is high, and it protects the lender rather than you. Before proceeding, compare the cost of buying sooner with the benefit of saving a larger deposit, and consider whether your budget can handle repayments, upfront costs and future changes in interest rates.

Published: Wednesday, 26th Aug 2026
Author: Paige Estritori