When Lenders Mortgage Insurance Applies and How It Is Priced
Lenders Mortgage Insurance (LMI) is a one-off premium paid by the borrower that protects the lender — not the borrower — against loss if the loan defaults and the property sells for less than the outstanding debt. Despite the name, it is not insurance for you.
LMI is triggered when the loan-to-value ratio (LVR) exceeds 80%. Below that, the bank is satisfied that a forced sale will recover the debt with margin to spare. Above it, the bank requires either a third-party insurer (Helia or QBE LMI dominate the Australian market) or a self-insured equivalent.
LVR is the loan amount divided by the property value used by the lender. The LVR calculation guide shows 80%, 90% and valuation-shortfall examples and explains why the lender's value can differ from the contract price.
How the Premium Is Priced
LMI premiums scale on two axes: LVR and loan size. They are non-linear — a small move from 89% to 91% LVR can double the premium because the insurer's expected loss on default rises sharply once the equity cushion disappears.
This site's illustrative rate grid produces the following owner-occupier house assumptions. It is a coarse site proxy, not a Helia, QBE or lender quote:
- Above 80% to 85% LVR: 0.31% of loan amount
- Above 85% to 90% LVR: 1.04%
- Above 90% to 95% LVR: 2.15%
- Above 95% to below 100% LVR: 3.85%
The grid changes by borrower and property type inside the tool, but it cannot reproduce insurer or lender pricing. A very small LVR movement across one of these bands can cause a large step in the estimate. Obtain a current lender quote before relying on the premium or changing a deposit.
The premium may be capitalised, which means adding it to the loan rather than paying it upfront. This increases the amount borrowed and the interest charged if the loan runs for longer. The lender decides whether capitalisation is available and whether the resulting LVR fits its policy. ASIC's Moneysmart LMI glossary explains who the insurance protects. The capitalised LMI guide works through the repayment effect.
This calculator also adds an indicative insurance-duty allowance by property state or territory where applicable. NSW is treated as 0% because Revenue NSW says LMI policies over NSW property are exempt from insurance duty for premiums paid on or after 1 July 2017. ACT is also treated as 0% because insurance duty has been abolished. Tasmania uses 2% for mortgage insurance policies based on the State Revenue Office guideline, rather than the general insurance rate. Other states use their published general insurance duty rates unless a lender-specific LMI quote says otherwise.
Some lenders waive LMI for specific professions (doctors, lawyers, accountants) up to 90% LVR. Others run "family pledge" or guarantor structures where a parent's equity covers the gap above 80%.
The First Home Guarantee Alternative
The Australian Government 5% Deposit Scheme, formerly the Home Guarantee Scheme, can let an eligible buyer use a participating lender with a deposit from 5% and avoid LMI because Housing Australia guarantees part of the loan. Current eligibility, property limits and lender requirements must be checked with Housing Australia and a participating lender. The trade-offs are explained in more detail in the government guarantee versus LMI guide.
An eligible buyer may avoid an LMI premium under the scheme, but a smaller deposit still means a larger loan, more interest over time and greater exposure to negative equity if prices fall. Scheme access is not loan approval.
Worked Example: $800,000 Purchase, $720,000 Loan, 90% LVR
- Purchase price: $800,000
- Deposit: $80,000 (10%)
- Loan: $720,000 before LMI
- LVR: 90%
At exactly 90% LVR, the site's current owner-occupier house proxy uses 1.04% and returns $7,488 before any state insurance duty. This is the calculator's coarse planning result, not an insurer or lender quote. The final quote can differ materially because insurer pricing, application data, GST treatment, duty settings and capitalisation rules vary.
Capitalised, the illustrative loan becomes $727,488 at an LVR of about 90.94%. A lender can use a different premium and may apply a capitalised-LMI limit or reassess the resulting LVR.
Repayment impact at 6.35% over 30 years: the $7,488 proxy premium adds about $47 per month. If the rate stayed unchanged and no extra repayments were made, it would add about $9,285 in interest, for about $16,773 in total repayments attributable to that added amount.
An eligible buyer using a government guarantee with a 5% deposit may avoid LMI, but the loan balance is larger. At 6.35%, an extra $40,000 of principal adds about $249 a month over 30 years. Avoiding LMI does not determine whether buying earlier is suitable; price movement, rent, savings, repayment capacity and scheme eligibility all matter.
Common Mistakes
- Assuming LMI is refundable. It is not automatic, except in narrow circumstances within the first 1–2 years on some policies. Refinancing to a new lender at high LVR usually triggers a fresh premium. The LMI refund guide explains what to ask before switching.
- Treating LMI as a tax deduction for owner-occupiers. It is not deductible. For investors, capitalised LMI is deductible over five years or the loan term, whichever is shorter.
- Capitalising LMI without checking the new LVR. Capitalisation can tip the loan into a higher band and increase the premium retrospectively.
- Assuming scheme access means loan approval. A participating lender still applies its credit, serviceability, property and documentation requirements.
- Comparing LMI quotes from different lenders by headline rate alone. The same insurer (Helia or QBE) can quote different premiums to different banks because of volume discounts. Always get the specific quote in writing.
