Lenders Mortgage Insurance exists to protect the lender when you borrow more than 80% of a property's value.
It doesn't protect you as the borrower. It's a one-off premium added to your loan amount or paid upfront, and it can range from a few thousand dollars to over $30,000 depending on how much you're borrowing and the size of your deposit. For many people buying property in NSW, LMI is the single largest cost outside the deposit itself. Understanding how it works and when you can avoid it changes how you approach your home loan application.
What triggers Lenders Mortgage Insurance on a home loan
LMI applies when your loan to value ratio exceeds 80%.
If you're borrowing $450,000 to buy a property valued at $500,000, your LVR is 90%. That 10% gap between your deposit and the lender's 80% threshold triggers the insurance. The premium is calculated based on that LVR and the total loan amount. A 95% LVR costs more than a 90% LVR, and a $600,000 loan costs more than a $400,000 loan at the same LVR.
Some lenders include the LMI premium in the advertised home loan rates comparison, but most charge it separately. You'll typically see it listed as a line item when you receive your formal loan offer. The premium can be paid upfront at settlement or capitalised into the loan amount, which means you're borrowing the cost of the insurance and paying interest on it over the life of the loan.
The deposit structure that removes the need for LMI
A 20% deposit eliminates LMI entirely.
If you're buying an owner-occupied property, that means putting down $100,000 on a $500,000 purchase. For investors, some lenders will waive LMI at 80% LVR but require a larger deposit for properties in certain postcodes or for borrowers with less stable income. The deposit can include genuine savings, equity from another property, or a family guarantee in some cases.
Consider a buyer in Western Sydney purchasing an apartment. They have $60,000 saved and were initially looking at properties around $600,000, which would put them at a 90% LVR. Instead of proceeding with that LMI cost, they adjusted their search to properties around $500,000. At that price point, their $100,000 deposit (using $60,000 in savings and $40,000 from a first home owner grant and family contribution) brought them to 80% LVR. The LMI premium they avoided was approximately $18,000. That's $18,000 they didn't need to borrow or pay interest on, and it didn't extend their loan term or increase their repayments.
How a family guarantee can reduce or waive the premium
A family guarantee allows a parent or close relative to use equity in their own property as additional security for your loan.
This doesn't mean they're giving you money. It means the lender can use their property as backup security, which lowers your effective LVR and often removes the need for LMI. Some lenders will approve a loan at 100% LVR with no LMI if a parent guarantees 20% of the property value. Once you've paid down enough of the loan or the property has increased in value, the guarantee can be removed and your parents' property is no longer linked to your loan.
This approach is common for first home buyers in NSW who have stable income but haven't had time to build a full 20% deposit. It works particularly well when parents own their home outright or have significant equity and are comfortable with the arrangement. The guarantee is a legal document, so both parties need independent legal advice before proceeding.
Lender LMI waivers for certain professions
Some lenders waive LMI for borrowers in specific professions, even at higher LVRs.
Doctors, dentists, veterinarians, accountants, and solicitors with certain lenders can borrow up to 90% or even 95% of a property's value without paying LMI. The waiver usually applies only to owner occupied home loans, not investment properties, and the borrower typically needs to have completed their professional qualifications and be working in that field.
If you're in one of these professions and weren't aware of the waiver, it's worth reviewing your home loan options before settling on a standard loan product. The waiver can save tens of thousands of dollars and makes higher LVR borrowing viable without the usual cost penalty.
Using equity in another property to avoid LMI
If you already own property, you can use the equity in that property to increase your deposit and avoid LMI on your next purchase.
Equity is the difference between what your property is worth and what you owe on it. If your home is valued at $700,000 and you owe $300,000, you have $400,000 in equity. Lenders will typically let you borrow up to 80% of that equity, which in this case would be $320,000. You can use that amount as part of your deposit on the next property, bringing your overall LVR down below 80% and removing the need for LMI.
This is common in NSW where property values in areas like the Central Coast, Newcastle, and parts of Sydney have increased significantly over the past decade. Borrowers who bought years ago often have enough equity to fund a deposit on an investment property or help a family member into the market without needing to sell or access cash savings. The existing property becomes cross-collateralised with the new one, which means both properties secure both loans. That structure has implications for refinancing or selling down the track, so it's worth understanding the long-term flexibility before proceeding.
Increasing your deposit with a split loan structure
A split loan won't directly reduce LMI, but it can reduce how much you capitalise if you're paying the premium upfront.
Some borrowers split their loan into a portion at 80% LVR and a smaller portion that attracts LMI. They might pay the LMI premium in cash at settlement rather than adding it to the loan, which keeps the total amount borrowed lower and reduces the interest paid over time. This approach works if you have some savings available but not quite enough for a full 20% deposit.
Another variation is to structure the loan so that a portion is fixed rate and a portion is variable rate, with the variable portion linked to an offset account. Any extra savings or income can go into the offset, reducing interest on that portion of the loan and helping you pay down the balance faster. Once the loan balance drops below 80% of the property's original value, you can ask the lender to remove the LMI portion from the loan structure during a refinancing or loan variation.
When paying LMI makes sense for your situation
Avoiding LMI isn't always the right move.
If property values are rising quickly and waiting another year to save a larger deposit means you're priced out of the market, paying LMI to buy now can be the better financial outcome. If you're paying $15,000 in LMI but the property increases in value by $40,000 in the first year, you've still come out ahead compared to renting and saving.
The decision comes down to how long it would take you to save the extra deposit, what you're paying in rent during that time, and whether the property or location you want is likely to still be within reach. LMI is a cost, but it's not inherently a bad cost if it allows you to achieve home ownership sooner and start building equity in your own property rather than someone else's.
If you're weighing up whether to proceed with a loan that includes LMI or wait until you have a larger deposit, it's worth running the numbers on both scenarios. A broker can show you what the premium would be, how it affects your repayments if capitalised, and what your equity position would look like in one, three, and five years under different value growth assumptions. That gives you a clearer picture of the trade-off you're making.
Call one of our team or book an appointment at a time that works for you. We'll review your deposit, your borrowing capacity, and the LMI implications for the properties you're considering, and show you which lenders offer the most favourable terms for your situation.
Frequently Asked Questions
What is Lenders Mortgage Insurance and when do I have to pay it?
Lenders Mortgage Insurance is a one-off premium that protects the lender when you borrow more than 80% of a property's value. It applies when your loan to value ratio exceeds 80%, and the cost depends on how much you're borrowing and the size of your deposit.
Can I avoid LMI without a 20% deposit?
Yes, you can use a family guarantee where a parent or relative uses equity in their property as additional security, lowering your effective LVR. Some professions like doctors, dentists, and accountants also qualify for LMI waivers with certain lenders, even at higher LVRs.
Does paying LMI ever make financial sense?
Paying LMI can make sense if property values are rising quickly and waiting to save a larger deposit means being priced out of the market. If the cost of LMI is less than the equity gain from buying sooner, it can be the better financial outcome.
How much does Lenders Mortgage Insurance cost?
LMI can range from a few thousand dollars to over $30,000 depending on your loan amount and LVR. A 95% LVR costs more than a 90% LVR, and the premium is calculated based on both the LVR and the total amount you're borrowing.
Can I use equity from another property to avoid LMI?
Yes, if you own property with sufficient equity, you can use up to 80% of that equity as part of your deposit on your next purchase. This can bring your overall LVR below 80% and remove the need for LMI on the new loan.