TL;DR — Key takeaways
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You’re ready to buy a home. You’ve saved a deposit. Then your lender mentions LMI and quotes you a number that makes your stomach drop.
Lender’s Mortgage Insurance is one of the most misunderstood costs in the home-buying process. Most people assume it protects them. It doesn’t. Here’s exactly what it is, what it costs, and how to avoid it. If you’re still figuring out the basics, our First Home Buyer’s Guide to Home Loans is a good place to start.
What is Lender’s Mortgage Insurance?
Lender’s Mortgage Insurance (LMI) is an insurance policy that protects the bank or lender — not you — if you default on your home loan and the property is sold for less than the outstanding loan balance.
Despite paying for it yourself, LMI offers you zero coverage. If you can’t meet your repayments, the lender makes a claim on the policy. You’re still liable for any shortfall. MoneySmart explains it the same way — it’s the lender’s protection, funded by you.
In plain terms: LMI is the lender’s safety net. You pay for it. They benefit from it. It exists because lending you more than 80% of the property value is considered higher risk — and lenders don’t absorb that risk for free.
When does LMI apply?
LMI applies whenever your Loan-to-Value Ratio (LVR) exceeds 80%. LVR is simply the percentage of the property’s value you’re borrowing. Use our borrowing power calculator to understand how your deposit size affects how much you can borrow.
LVR is calculated on the lender’s valuation of the property — not necessarily the price you paid. If the lender values the property lower than your purchase price, your effective LVR is higher and LMI may still apply even if your deposit looks sufficient on paper.
How much does LMI cost?
LMI cost depends on three things: your loan amount, your LVR, and your lender. Most LMI in Australia is underwritten by two providers — Genworth and QBE — but lenders set their own rates based on risk. The MoneySmart deposit guide also covers how LMI factors into your overall savings target.
As a rough guide for a property purchase in 2026:
These are indicative estimates only. Actual LMI costs vary by lender and are calculated on the insured loan amount. Your broker can run an exact quote before you commit to any application. Use our loan repayment calculator to see how adding LMI to your loan affects your monthly repayments.
How is LMI paid?
LMI is a one-off premium, not an ongoing monthly fee. Most borrowers have it capitalised into the loan — meaning it’s added to the loan balance and you pay interest on it over the life of the loan. Some lenders allow you to pay it upfront at settlement.
Option 1 Added to your loan Most common. LMI is capitalised into the loan balance. You don’t pay it upfront but you pay interest on it for the full loan term. Total cost is higher over time. |
Option 2 Paid upfront at settlement Some lenders allow an upfront cash payment at settlement. Total cost is lower (no interest) but it increases the cash you need on the day. |
Should you pay LMI or wait until you have 20%?
This is the question most first home buyers wrestle with. And the honest answer is: it depends on the market.
If property values are rising faster than you can save, waiting for a 20% deposit can cost you more than the LMI itself. If values are flat or falling, waiting and avoiding LMI makes more sense. Don’t forget to factor in the hidden costs of buying a home — stamp duty, conveyancing, and building inspections all add up on top of LMI.
Example: A property worth $700,000 today could be worth $770,000 in 18 months if values grow at 5% per year. If you spent that time saving to avoid $20,000 in LMI, you may have lost $70,000 in equity. Your broker can model both scenarios with real numbers for your situation. Book a free 15-minute chat to run the numbers.
How to avoid LMI
There are four legitimate ways to avoid paying LMI without waiting years to save a full 20% deposit.
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Is LMI tax deductible?
For owner-occupiers buying a home to live in, LMI is not tax deductible.
For investment properties, LMI may be deductible as a borrowing expense — but it must be claimed over five years or the loan term (whichever is shorter), not all at once. The ATO lists LMI as a borrowing expense for investment properties. If you’re buying an investment property, see our investment loan guide for how LMI and tax treatment factor into your overall structure.
This is general information only and not tax advice. Speak to a registered tax agent about your specific circumstances before lodging any claims.
Frequently asked questions
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