The Finance Algorithm

LMI Calculator

Work out Lenders Mortgage Insurance from a quoted premium, and what it costs to pay upfront or add to the loan

Updated October 2026Built and checked by MaverickHow it's calculatedReport an error

Your numbers

Updates as you type
$
$750k

The purchase price of the property

$
$675k

LMI applies when the loan is more than 80% of the property value

%
2%

The premium a lender or broker quotes, as a % of the loan, including any taxes on it. The default is an example, not a market rate

Government schemes can let eligible first home buyers borrow above 80% without LMI

The button asks our AI to explain these figures in words.

Your LMI results

LMI at your quote

$13,500

LVR

90.0%

Premium rate

2.00%

of loan amount, as entered

The 30-year cost of adding LMI to your loan

Capitalising means you borrow the LMI too, and pay interest on it: here at 6.80%, the RBA's average variable rate, for 30 years.

  • Upfront
  • Capitalised
$13,500Pay upfronttoday, in cash$31,684Capitalised (30yr)incl. $18,184 interest
$75,000 more deposit would bring the LVR to 80%, where LMI no longer applies. The Australian Government's 5% Deposit Scheme and Family Home Guarantee, or a family guarantee, are other ways eligible buyers borrow above 80% without paying LMI.

How it works

Lenders Mortgage Insurance (LMI) protects the lender, not you, if a loan above 80% of the property's value isn't repaid, and the borrower pays the premium. Premiums are set by the insurer for each loan, so this calculator works from the premium in your quote: it shows the dollar cost, what adding it to the loan costs over 30 years, and the extra deposit that would bring the LVR to 80%.

  1. 1Enter the property value
  2. 2Enter the loan amount
  3. 3Enter the LMI premium from a lender's or broker's quote, as a % of the loan
  4. 4Tick First Home Buyer if it applies
  5. 5See the premium in dollars, the cost of capitalising it and the deposit that would avoid it

The figures today

As of 7 November 2026, the lowest variable home loan rate is 5.93%, from SCCU's BROKER HOME LOAN, while the typical best across 104 institutions is 6.38%. The lowest 3-year fixed home loan rate is 6.24%, from Credit Union SA's 3-Year Fixed 40 Year Home Loan Package, while the typical best across 80 institutions is 6.69%. The RBA cash rate is 4.85%. Those are for an owner-occupier paying principal and interest at an 80% LVR.

Worked examples

First Home Buyer at 90% LVR

Emma is buying a $700,000 apartment with a 10% deposit ($70,000), borrowing $630,000. Her quote is 2% of the loan.

Property value
$700,000
Loan amount
$630,000
LMI premium (% of loan, from a quote)
2%
First home buyer
Yes

LMI at that quote: $12,600. Adding it to a 30-year loan at the RBA's average variable rate makes it $29,571 in total repayments. If Emma is eligible for the 5% Deposit Scheme and the property is under its price cap, she pays no LMI.

Borrowing 88% of the Value

Sam is buying an $850,000 house, borrowing $748,000 (88% LVR), with a quote of 2% of the loan.

Property value
$850,000
Loan amount
$748,000
LMI premium (% of loan, from a quote)
2%

LMI at that quote: $14,960. Another $68,000 of deposit would bring the LVR to 80%, where LMI no longer applies.

Questions people ask

Can LMI be avoided?
LMI doesn't apply with a deposit of at least 20% of the property value. Below that, eligible buyers can use government schemes such as the 5% Deposit Scheme, a family guarantee, or a lender's LMI waiver where one is offered.
Is LMI refundable if I sell or refinance?
Refund rules are set by the insurer and the policy. Ask the lender for the policy's terms before relying on any refund.
Is it cheaper to capitalise LMI or pay it upfront?
Paying upfront costs less in total because no interest is charged on the premium; capitalising keeps cash in hand at settlement. The calculator shows the difference over 30 years at the RBA's average variable rate.

The terms, in plain English

LMI (Lenders Mortgage Insurance)
Insurance that protects the lender (not you) if a home loan isn't repaid. It applies when the loan is more than 80% of the property value.
Capitalise
Adding LMI to the loan amount rather than paying it upfront. Interest is then charged on it for the life of the loan.
5% Deposit Scheme
An Australian Government scheme, formerly the First Home Guarantee, under which eligible first home buyers can buy with a 5% deposit without paying LMI. The government guarantees the part of the loan above 80% of the value.
Family Guarantee
An arrangement where a family member offers equity in their property as extra security for part of your loan.

Official sources