Lenders Mortgage Insurance. Three words that make first-home buyers tense up, search “how to save faster” and put their property plans on hold for another two years. Somewhere along the way, LMI acquired a reputation it does not entirely deserve. It gets talked about like a punishment—something the bank charges you for not being disciplined enough to save a full 20% deposit. 

That framing is wrong. And it is costing people money. 

This article is not going to tell you LMI is wonderful. It is not. You are paying an insurance premium that protects the lender, not you. That is genuinely one-sided. But “one-sided” and “not worth paying” are two different things, and conflating them is where a lot of buyers go wrong. 

Here is what LMI actually is, what it actually costs and when paying it makes more financial sense than the alternative. 

What Is LMI? 

LMI stands for Lenders Mortgage Insurance. It is an insurance premium charged by lenders when a borrower’s deposit is less than 20% of the property value—in other words, when the loan-to-value ratio (LVR) exceeds 80%. 

The insurance covers the lender’s risk if the borrower defaults and the property sale does not recover the full loan amount. As a borrower, you pay the premium. As a borrower, you receive none of the benefit. The lender is the insured party. 

That is the part that feels unfair. And it is fair to feel that way. But understanding what LMI enables is more useful than being annoyed by its structure. 

What LMI enables is this: access to a mortgage with a deposit below 20%. Without LMI, most lenders would not approve loans above 80% LVR. With it, borrowers can access mortgages at 90% LVR (10% deposit) or 95% LVR (5% deposit). For buyers who are ready in every other way except for having a full 20% deposit, LMI is the mechanism that opens the door. 

The “Failure Tax” Framing—And Why It’s Wrong 

The idea that LMI is a penalty for insufficient savings is persistent and largely unfair. 

It treats 20% as a financial virtue rather than an arbitrary threshold. The 20% deposit requirement is not a measure of financial responsibility — it is a lender risk management benchmark. Plenty of financially responsible, employed, asset-building people do not have 20% of a property’s value sitting in a savings account. That does not make them bad candidates for homeownership. 

More importantly, the “save until you have 20%” strategy only makes sense if property prices wait for your savings account. They typically do not. 

In markets where annual price growth consistently outpaces savings rates, every month of additional saving changes the target. The 20% of today’s price is not the same number as 20% of next year’s price. Buyers who have been told to “just save more” sometimes find that two years of disciplined saving has left them further behind, not closer. 

LMI is not a tax on failure. It is a price of admission. And the question worth asking is not “how do I avoid this cost?” but “is this cost worth paying given what I gain by entering the market now?” 

A Story That Makes This Real 

A couple I worked with had saved $75,000. They were fixated on reaching a 20% deposit before they bought. Responsible, they said. Sensible. 

They delayed buying for almost two years. 

During that time, the properties they were watching increased in value by more than the LMI they were trying to avoid. 

By the time they reached their 20% target, the target had moved. They needed a larger deposit for the same property — and they had spent two years paying rent in the process. 

They bought eventually. But they bought a different property, in a different suburb, at a different price point. The properties they had originally wanted were no longer within reach. 

I am not telling this story to frighten anyone into buying before they are ready. I am telling it because the assumption that “waiting is safe and LMI is risky” deserves to be examined rather than accepted. The risk of waiting is real. It is just less visible than the line item on a loan document. 

What LMI Actually Costs 

LMI is calculated based on your loan size and LVR. The premium increases as your LVR rises. At 90% LVR, LMI is moderate. At 95% LVR, it is significantly higher.

Property Value	Deposit (10%)	LVR	Approximate LMI Cost
$500,000	$50,000	90%	approx. $8,000-$10,000
$600,000	$60,000	90%	approx. $9,800-$12,000
$750,000	$75,000	90%	approx. $12,000-$15,000
$600,000	$30,000	95%	approx. $18,000-$21,000
$750,000	$37,500	95%	approx. $22,000-$27,000

 

Jess has saved $65,000. She is looking at a property priced at $650,000. 

Option A: Buy now with a 10% deposit 

Property: $650,000 

Deposit: $65,000 (10%) 

LVR: 90% 

Approximate LMI: $12,000 (capitalised into loan) 

Monthly LMI impact on repayments: approximately $55/month 

She is in the market now, building equity from day one. 

 

Option B: Wait 2 years to save an additional $65,000 for a 20% deposit 

Additional saving required over 24 months: $65,000 (approximately $2,700/month — while still paying rent) 

Property price after 2 years at 5% annual growth: approximately $717,000 

20% deposit on new price: $143,400 — $13,400 more than originally planned 

LMI avoided: $12,000 

Equity missed during 2 years in market: approximately $67,000 in capital growth 

Net position: saved $12,000 in LMI, missed approximately $67,000 in equity growth 

Note: This scenario assumes 5% annual property growth, which is not guaranteed. In flat or declining markets, waiting may be the right call. The point is not that Option A is always correct — it is that the decision should be made on the numbers, not on the assumption that LMI is inherently bad. 

LMI and Investment Properties 

If you are buying an investment property rather than a home to live in, there is an additional consideration that does not apply to owner-occupiers: LMI is tax deductible. 

The ATO treats LMI as a borrowing expense for investment loans, which means it can be claimed as a tax deduction, amortised over five years (or the loan term, whichever is shorter). In practical terms, a $15,000 LMI premium on an investment property loan becomes a $3,000 deduction per year for five years. 

For an investor on a 37% marginal tax rate, that $3,000 annual deduction represents approximately $1,110 back per year — or $5,550 over the full five-year amortisation period. The net LMI cost after tax deductions is meaningfully lower than the headline figure. 

This does not apply to owner-occupiers. If you are buying a property to live in, LMI is not deductible. If you are buying an investment property, the tax position is worth discussing with your accountant before you decide LMI is too expensive. 

This is exactly the kind of conversation your mortgage broker and your accountant should be having in the same room — or at minimum, in the same decision-making process. The lending structure determines the deductibility. The deductibility changes the net cost. Both matter. 

If you do not yet have an accountant advising on your property decisions, that is worth addressing before settlement — not after. You can read more about when to bring an accountant into your property process in our article on working with property professionals. 

Who LMI Suits—and Who It Doesn’t 

LMI May Be Worth It If…	LMI May Not Be Worth It If…
You are buying in a market with consistent price growth	The market is flat or decliningand you have time to save
Property prices are rising faster than your savings rate	You can realistically save 20% within 12 months
You are ready in every other respect (income, job stability, credit)	You are stretching your borrowing capacity to maximum at 95% LVR
You are buying an investment property (LMI is tax deductible)	Your cash flow at 90-95% LVR leaves no buffer for unexpected costs
Waiting means paying rent instead of building equity	You are planning to sell within 2-3 years (growth may not cover LMI cost)

If the market is flat or declining, I would probably wait. LMI makes the most sense when market growth is outpacing your savings rate. In a flat market, that equation shifts. The urgency decreases. 

If paying LMI at 95% LVR leaves you with no financial buffer, I would definitely wait. Entering the market at maximum leverage with no contingency for a rate rise, a lost job, or a broken hot water system is not a strategy — it is a stress position. LMI is a tool for people who are genuinely ready except for the deposit size, not a shortcut around financial readiness. 

If you are planning to sell within two to three years, the numbers may not stack up. LMI works best as a long-term entry cost. In a short hold, the premium may not be recovered through growth. 

There is one version of a client I always encourage to enter the market with LMI: the person who is financially stable, employed, has a buffer, is buying with a clear plan, and is simply short of 20% because property prices have moved faster than their savings could. That person is not failing. They are making a rational decision about time in the market. 

Everyone else — we talk through it first. 

The Broker Conversation 

LMI premiums are not fixed across all lenders. Different lenders calculate LMI differently, use different insurers (primarily QBE and Helia in Australia), and have different pricing for different LVR bands. The premium for the exact same loan can vary between lenders. 

This is one of the genuinely useful things a mortgage broker does: shop your loan across multiple lenders and find both the best interest rate and the most competitive LMI premium for your situation. The broker conversation about LMI is not just “do I have to pay it?” It is “which lender gives me the best total cost picture, including LMI?” 

Some lenders also offer LMI waivers for specific borrower categories — certain professions (medical, legal, accounting in some cases), specific government schemes, or lender-specific promotions. A broker will know which of those apply to your situation. 

What a broker cannot do is make the “wait or pay” decision for you. That decision depends on your personal circumstances, your market, your financial position, and how you feel about the risk of each path. What they can do is give you the numbers clearly enough to make the decision with confidence. 

You can read more about what a mortgage broker does and when to use one in our full guide: What Is a Mortgage Broker? (thecontinuum.com.au/insights/what-is-a-mortgage-broker-australia) 

Not sure whether LMI makes sense for your situation?

That calculation depends on the market you’re buying in, your savings timeline, and whether you’re purchasing as an owner-occupier or investor. Let’s work through it together — no pressure, just clarity. Book a Free Discovery Call 

Frequently Asked Questions 

What is LMI in Australia? 

LMI stands for Lenders Mortgage Insurance. It is a premium paid by a borrower when their deposit is below 20% of the property value (LVR above 80%). It protects the lender — not the borrower — against the risk of default. It allows buyers to access a mortgage without a full 20% deposit. 

How much does LMI cost in Australia? 

LMI costs vary by lender, loan size, and LVR. At 90% LVR on a $600,000 property, LMI is approximately $9,800-$12,000. At 95% LVR, costs can exceed 3.5% of the loan amount. LMI is typically capitalised into the loan rather than paid upfront. A mortgage broker can obtain exact quotes from multiple lenders. 

Is LMI tax deductible in Australia? 

LMI is tax deductible for investment properties (not owner-occupiers) as a borrowing expense, amortised over five years. A $15,000 LMI premium on an investment loan could be claimed as approximately $3,000 per year for five years. Confirm with a qualified accountant for your specific situation. 

Is it worth paying LMI instead of waiting to save a 20% deposit? 

In many markets, yes — particularly where property prices are rising faster than your savings rate. The cost of LMI may be significantly less than the additional purchase cost from waiting for prices to rise. The decision depends on the market, your savings trajectory, and your investment horizon. A mortgage broker can model both scenarios for your specific numbers. 

Can I avoid LMI? 

You can avoid LMI by saving a 20% deposit, using a guarantor loan (where a family member’s equity guarantees the deposit gap), accessing specific government schemes such as the Home Guarantee Scheme, or borrowing from a lender that offers LMI waivers for certain professions. A mortgage broker will know which options apply to your situation. 

Do investment property loans have higher LMI than owner-occupier loans? 

Yes. LMI premiums for investment property loans are typically approximately 9-10% higher than for equivalent owner-occupier loans. However, investment LMI is tax deductible as a borrowing expense, which reduces the net cost meaningfully compared to the headline figure. 

Related Articles

What Is a Mortgage Broker?

Do You Need an Accountant for Property?

Questions First Home Buyers Don’t Know to Ask 

Sources & references 

The following sources are relevant to the content covered in this article.

Money.com.au — Lenders Mortgage Insurance Guide 2026

Savings.com.au — LMI Explained: How It Works, What It Costs

AusTax Tools — LMI Calculator Australia 2025-26

QBE Australia — Using LMI for an Investment Property

Property Builder — Claiming LMI as a Tax Deduction for Investment Properties 2025

InvestorKit — What Is LMI and How to Avoid It

Home Loan Experts — Lenders Mortgage Insurance

Dark Horse Financial — Understanding LMI

Original article inspiration: “LMI: Don’t Panic, It Isn’t That Big a Deal” by Rielle Berglund, Matilda Tree Finance

Disclaimer 

This article contains general information only and does not constitute financial, legal or tax advice. Please speak to a licensed financial advisor, solicitor or mortgage broker about your specific circumstances. Aimee Templeman is a licensed real estate agent however approaches property through the lens of learning and empowerment. She has decades of experience coaching and advising everyday Australians and executive decision makers. Book a conversation with Aimee at Contact.