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LMI Calculator: What Lenders Mortgage Insurance Costs

Enter a property price and a deposit to estimate the lenders mortgage insurance premium. LMI is priced off your loan-to-value ratio and your loan size together, so the same deposit percentage costs very different amounts on a $400,000 purchase and a $900,000 one. The comparison below shows where the pricing cliffs sit.

Priced by LVR and loan size85, 90 and 95% cliffsDeposit comparisonIndicative 2026 rates
Loan amount$675,000
LVR90.0%
Deposit10.0%
Card rate2.367%
Your estimated LMI premium
What a bigger deposit would save you
Scroll table sideways →
DepositLVRLoanPremium rateLMI
LMI protects the lender, not you. It covers the lender's shortfall if the property is sold for less than the outstanding loan. You pay the premium, and you carry the loss.
It is priced in bands, not on a smooth curve. Nudging your LVR from 90.1% down to 90.0% can move you across a cliff and cut the premium sharply. The comparison table above is where that shows up.
Most lenders let you capitalise it. The premium is added to the loan rather than paid at settlement, which preserves cash but means you pay interest on it for the life of the loan.
Several states charge duty on the premium. Insurance duty is added on top of the figures here, so budget a little above the estimate.
Some borrowers pay none of it. Doctors, lawyers, accountants and a few other professions get LMI waived to 90% LVR with many lenders, and a guarantor arrangement can remove it entirely.
Indicative only. LMI is priced by the insurer, not the lender, and Helia and QBE each hold rate cards that individual lenders negotiate. Published comparisons of the same scenario differ by close to double. This page's rate card puts a 90% LVR loan near 2.4% of the loan, while a Westpac-based comparison published by money.com.au in August 2026 lands nearer 4.2%. Industry guidance puts the whole span at roughly 1% to 5% of the loan. Treat the range above as a budgeting band, not a quote. Your actual premium depends on the lender, the insurer, the property type, your loan purpose and your profile. This is general information only and not financial, tax, or credit advice.

How lenders price LMI

Two numbers set your premium: your loan-to-value ratio, and the size of the loan. Most calculators only use the first, which is why they can be a long way out on larger loans. At 90% LVR the published rate runs from about 1.46% of the loan on a small loan to about 2.52% once the loan passes $750,000. On a $675,000 loan that difference is worth thousands.

The rate is applied to the loan amount, not the property price, and not the shortfall below 20%. That catches people out. A 5% deposit does not cost you a premium on the missing 15%, it costs you a percentage of the entire 95% loan.

The 85%, 90% and 95% LMI cliffs

Premiums step up hard at 85%, 90% and 95% LVR. Between 89.01% and 90% the rate is roughly 1.5% to 2.5% of the loan depending on size. Cross into 90.01% and it jumps to roughly 2% to 3.8%. Finding another few thousand dollars of deposit to stay under a threshold is often worth far more than the deposit itself.

When paying LMI is the right call

The standard line is to save 20% and avoid it. For an investor building a portfolio that is not always the better maths. Going in at 10% instead of 20% on a $750,000 purchase frees roughly $75,000 of cash for the cost of the premium. Whether that trade works depends on what the freed cash does next and what the market does in the meantime, which is a conversation for your broker and your accountant, not a rule of thumb.

Work out the rest of your settlement cash with the upfront cost calculator, check what you can borrow with the investment property calculators, or read how investors use equity instead of a cash deposit.

LMI questions investors ask us
How much is LMI on a 10% deposit?

It depends on the lender more than most people expect. On the rate card this page uses, a 90% LVR loan runs from about 1.463% of the loan up to $300,000 to about 2.516% between $750,000 and $1 million, so a $675,000 loan lands near $16,000. Other published comparisons put the same loan closer to $28,000, because insurers and lenders price the same LVR very differently. Budget a range and get a quote from your broker.

Do you pay LMI with a 20% deposit?

No. At 80% LVR or below there is no LMI. That is the whole reason 20% is the number everyone quotes. Some lenders also waive it above 80% for certain professions, and a guarantor can remove it without you reaching 20%.

Is LMI charged on the property price or the loan?

The loan. The premium rate is applied to the full loan amount, not to the property price and not to the gap below a 20% deposit. This is the single most common misunderstanding about how LMI is calculated.

Can LMI be added to the loan?

Most lenders allow it, which is called capitalising the premium. It keeps cash in your pocket at settlement, but you pay interest on the premium for as long as you hold the loan, so the true cost is higher than the premium itself.

Is LMI refundable if I sell or refinance early?

Partial refunds exist with some insurers if the loan is discharged within the first year or two, but they are limited and many lenders no longer offer them. Treat the premium as a sunk cost when you are deciding.

Is LMI tax deductible on an investment property?

LMI on an investment loan is generally treated as a borrowing expense and claimed over five years, or the loan term if shorter, rather than deducted in full in year one. Confirm the treatment for your circumstances with your accountant.