LMI is usually relevant when your deposit is below 20 per cent and your loan-to-value ratio (LVR) is above 80 per cent, although lender rules vary. The premium is not a standard flat fee: it is shaped by the loan amount, property value, deposit, LVR band, borrower type and sometimes whether the property is owner-occupied or an investment. An Australian LMI calculator helps you estimate the extra cost before you apply, so you can compare buying with a high-LVR loan against saving a larger deposit.

Lenders mortgage insurance protects the lender, not the borrower, if the borrower defaults and the property sale does not fully cover the debt. According to ASIC MoneySmart, borrowers with a smaller deposit may need to pay LMI, and the cost may be paid upfront or added to the loan depending on the lender and product (MoneySmart, 2026).

The starting point is the LVR. Divide the proposed loan amount by the property value, then multiply by 100. A A$720,000 loan on a A$800,000 property has a 90 per cent LVR. That is a high-LVR loan because the borrower is contributing a 10 per cent deposit before purchase costs.

The LMI estimate then usually moves in bands. A loan at 82 per cent LVR may attract a much smaller premium than a loan at 90 per cent or 95 per cent LVR. Loan size also matters because the premium is commonly linked to the borrowed amount. Two buyers can have the same LVR but pay different dollar premiums if one property is more expensive.

Capitalising LMI can reduce the cash needed at settlement, but it increases the mortgage balance. For example, if a A$14,000 LMI premium is added to the loan, interest is charged on that extra amount over time. The comparison rate helps compare loans because it includes most fees and charges, but LMI treatment can still differ by lender. Rate and fee examples are current as of June 2026; rates change frequently, verify current terms with a licensed lender or broker before deciding.

Read also: What Is Lenders Mortgage Insurance in Australia

First-home buyers should also check whether a government guarantee could change the result. Housing Australia describes the First Home Loan Deposit Scheme as helping eligible first-home buyers purchase with a smaller deposit without paying LMI, subject to scheme rules, places, property price caps and participating lenders (Housing Australia, 2026).

Use the LMI calculator to test several deposit levels, not just one. Compare 5 per cent, 10 per cent and 15 per cent deposits, then look at whether the estimated premium falls enough to justify waiting. Also test paying the premium upfront versus adding it to the loan.

Finder’s home loan comparison material can be useful for checking how advertised rates, comparison rates, fees and features differ across Australian lenders, but it should not replace a lender assessment or personal advice (Finder, 2026).

General advice warning: this information is general in nature only and does not consider your objectives, financial situation or needs. It is not personalised financial, lending, legal or tax advice. Eligibility, LMI, fees and availability vary by lender, product and your circumstances, and stamp duty differs by state and territory. Consider speaking with a licensed lender, mortgage broker or qualified professional before acting.