🛡️ LMI Calculator Australia (Lenders Mortgage Insurance)

Borrowing more than 80%? See roughly what LMI could cost.

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Formula at a glance

LMI Calculator: LVR — loan ÷ property value × 100. Example: $700,000 home, 10% deposit → Estimated LMI premium: $11,290 – $16,934
How the LMI Calculator works: LVR — loan ÷ property value × 100

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📘 About the LMI Calculator

Lenders mortgage insurance is a one-off premium most lenders charge when you borrow more than 80% of the property value. It protects the lender if you default, not you, and is usually added to the loan.

The premium rises steeply with the loan-to-value ratio and loan size. Eligible first home buyers can avoid it with the government's 5% deposit scheme, and some professionals get LMI waivers.

🧮 Formula

LVR
loan ÷ property value × 100
LMI
loan × premium rate for the LVR band

✏️ Worked examples

$700,000 home, 10% deposit

You enter
Property price700,000 $
Deposit70,000 $
First home buyer?No
You get
Estimated LMI premium$11,290 – $16,934
Loan-to-value ratio90%
Loan$630,000
Deposit for 20% (no LMI)$140,000

$11,290 – $16,934.

$500,000 home, 15% deposit

You enter
Property price500,000 $
Deposit75,000 $
First home buyer?No
You get
Estimated LMI premium$3,060 – $4,590
Loan-to-value ratio85%
Loan$425,000
Deposit for 20% (no LMI)$100,000

$3,060 – $4,590.

🧭 How to use this calculator

What you enter

  • Property price ($)
  • Deposit ($)
  • First home buyer?

What you get

  • Estimated LMI premium
  • Loan-to-value ratio
  • Loan
  • Deposit for 20% (no LMI)

❓ Frequently asked questions

How much is LMI on a 10% deposit?

Often about 1.5–2.5% of the loan — roughly $10,000–$16,000 on a $630,000 loan.

How can I avoid LMI?

Save a 20% deposit, use the 5% Deposit Scheme for first home buyers, a family guarantee, or an LMI waiver for eligible professions.

Is LMI refundable?

Sometimes partly, if you repay or refinance within the first year or two, but usually not.

Can LMI be added to the loan?

Yes, most lenders capitalise it, which increases the LVR slightly and the interest you pay.