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LMI Calculator

Estimate your Lenders Mortgage Insurance (LMI) cost based on property value and deposit size. See how different deposit amounts affect your LMI premium.

Last verified: 1 July 2025

How is Lenders Mortgage Insurance calculated in Australia?

LMI kicks in when your deposit is below 20% of the property value (Loan-to-Value Ratio above 80%). The premium is a one-off cost calculated on the loan amount and LVR — typically 1% to 5% of the loan. Paid at settlement or capitalised into the loan. Source: ASIC MoneySmart; Helia (formerly Genworth) LMI rate tables.

Worked example. Buying a $700,000 home with a 10% deposit ($70,000), the $630,000 loan sits at 90% LVR. Typical LMI premium is roughly $12,000 to $14,000 (about 2% of the loan). A 5% deposit pushes LMI closer to $25,000 on the same property. Saving a 20% deposit avoids LMI entirely.
$

The purchase price or estimated value of the property.

$

Your total deposit or down payment amount.

General information and estimates only — not financial, tax, or legal advice. Always verify with a licensed adviser or the ATO.