Understanding LMI: When It Applies and How to Avoid It
Lenders Mortgage Insurance (LMI) is one of the more misunderstood costs in a property purchase, partly because its name makes it sound like it protects the buyer. It doesn’t — it protects the lender if you default.
When it typically applies
As a general rule of thumb, lenders often require LMI when you’re borrowing a large proportion of the property’s value — commonly above 80% — though exact thresholds and premiums vary by lender and loan type, so always confirm the specific figure with your lender or broker.

Ways buyers reduce or avoid it
- Saving a larger deposit before applying
- Using a guarantor arrangement, where a family member’s equity supports the loan
- Some first-home buyer government schemes that waive or reduce LMI in certain circumstances
It’s a real cost, factor it into your numbers
LMI can be a meaningful amount added either upfront or to your loan, so it needs to sit alongside the other purchase costs in our guide to hidden buying costs, not be treated as a footnote.
Get advice specific to your situation
Whether LMI makes sense to pay versus waiting to save a larger deposit depends on your timeline and the market — worth a direct conversation with a broker like Chamberlains.
