LMI can add $5,000 to $35,000+ to the cost of buying your home — yet many buyers don't find out until settlement day. This guide explains exactly what LMI costs at different loan sizes, who pays it, and four legitimate ways to avoid it.
Lenders Mortgage Insurance is one of the most poorly understood costs in Australian property. The name suggests it is insurance for the mortgage — which most buyers assume means insurance for them. It is not. LMI is an insurance policy the lender takes out to protect themselves against the risk that you might default on your loan and the property sale might not cover the outstanding balance.
You pay for it. It protects the lender. This is not a small distinction: if you default and the lender claims on the LMI policy, the LMI insurer may then pursue you for the shortfall.
LMI is triggered whenever your Loan-to-Value Ratio (LVR) exceeds 80% — meaning your deposit is less than 20% of the property price. Australia has two main LMI providers: Helia (formerly Genworth) and QBE. Lenders choose which provider to use, and LMI is not portable between lenders — if you refinance, you may need to pay LMI again.
LMI is calculated as a percentage of the loan amount, with the rate increasing as your LVR (and therefore the lender's risk) increases. The following estimates are typical ranges — exact amounts vary by lender, property type, and LMI provider:
| Deposit Amount | Deposit % | Loan Amount | LVR | Estimated LMI |
|---|---|---|---|---|
| $35,000 | 5% | $665,000 | 95% | $25,000 – $31,000 |
| $70,000 | 10% | $630,000 | 90% | $15,000 – $19,000 |
| $105,000 | 15% | $595,000 | 85% | $8,000 – $12,000 |
| $140,000 | 20% | $560,000 | 80% | $0 — LMI not required |
| Deposit Amount | Deposit % | Loan Amount | LVR | Estimated LMI |
|---|---|---|---|---|
| $50,000 | 5% | $950,000 | 95% | $36,000 – $44,000 |
| $100,000 | 10% | $900,000 | 90% | $22,000 – $28,000 |
| $150,000 | 15% | $850,000 | 85% | $12,000 – $18,000 |
| $200,000 | 20% | $800,000 | 80% | $0 — LMI not required |
LMI is almost always capitalised — added to your home loan balance rather than paid as a cash upfront cost. This means you pay LMI gradually through your mortgage repayments, with interest, over the life of the loan.
The real cost of LMI is therefore higher than the quoted premium. A $20,000 LMI premium added to a 30-year loan at 6.5% interest actually costs approximately $43,000 in total repayments over the loan term — more than double the face value. This is an important consideration when deciding whether to pay LMI or wait to save a larger deposit.
The traditional route. Below 80% LVR, no LMI applies. The challenge in 2026 is that 20% of median property prices in major capital cities ($140,000–$200,000+) takes most households many years to accumulate. This approach makes sense for buyers with substantial savings capacity, time on their side, or who are targeting lower-priced markets.
The most commonly used LMI-avoidance strategy for first home buyers in 2026. Under the First Home Guarantee, the federal government guarantees 15% of the property price to the lender, meaning the lender treats the loan as if it has an 80% LVR — no LMI required, even though your actual deposit is only 5%. The scheme now has unlimited places and no income caps (from October 2025).
A guarantor arrangement allows a family member (usually parents) to use the equity in their own property as additional security for your loan. This reduces your effective LVR to below 80% without requiring you to have a 20% deposit yourself. The guarantor takes on legal risk — if you default, the lender can pursue the guaranteed portion from the family property. Guarantors are eventually released once your equity grows sufficiently (typically when your LVR reaches 80%).
Some lenders offer LMI waivers for specific professionals — typically doctors, dentists, veterinarians, lawyers, and accountants — who can borrow up to 90% or even 95% LVR without LMI. This reflects the statistical low default rates among these professions and their typically high incomes. If you work in one of these professions, ask your broker specifically about professional LMI waiver products.
LMI is framed as a cost to avoid, but there are genuine situations where paying it makes financial sense:
Whether LMI is worth paying in your specific situation is best worked through with a mortgage broker who can model the numbers with your specific purchase price, savings trajectory, and income.
Does LMI protect me if I lose my job?
No. LMI protects the lender against the risk that the property sale won't cover the outstanding loan if you default. It does not provide any protection, income replacement, or benefit to you as the borrower. If you want personal protection, income protection insurance or mortgage protection insurance are separate products worth considering.
Can I avoid paying LMI by getting a smaller loan?
Yes — LMI is only triggered when your LVR exceeds 80%. If you can reduce your loan amount to 80% of the property price or below (by increasing your deposit or purchasing a lower-priced property), no LMI applies. Even a small deposit top-up can make a significant difference — moving from 88% LVR to 80% eliminates LMI entirely.
Is LMI refundable if I refinance?
Generally no. LMI is a one-off premium that is not refundable if you refinance, sell the property, or pay off the loan early. When you refinance with a new lender, the new lender may require their own LMI policy if your LVR is still above 80% — meaning you could pay LMI twice if you refinance shortly after purchase. This is an important reason to choose your initial lender carefully.
Is LMI tax deductible on an investment property?
LMI paid on an investment property loan can be claimed as a tax deduction, but must be spread over the lesser of 5 years or the loan term — it cannot all be claimed in the year it is paid. LMI on an owner-occupier home loan is not tax deductible. Always confirm with your tax agent for your specific circumstances.