LMI. When paying it makes you richer.

Lenders Mortgage Insurance is one of the most disliked transaction costs in Australian property. The buyer pays it. The insurance protects the lender. The buyer never sees a claim. The premium can run $15,000-30,000 on a typical first home purchase.

Conventional wisdom says save the 20% deposit and avoid LMI. The conventional wisdom is sometimes wrong. In rising markets, the opportunity cost of waiting can exceed the LMI itself, often by a factor of 4-8x.

This post explains when LMI is worth paying, when it is not, and the maths to decide.

What LMI is

Lenders Mortgage Insurance is an insurance product that protects the lender (not the borrower) against the risk that the borrower defaults and the property sells for less than the loan balance.

LMI is typically required when the loan-to-value ratio (LVR) exceeds 80%. The premium is calculated based on:

• The loan amount
• The LVR (higher LVR means higher premium)
• The borrower's profile (credit history, employment, income stability)
• The property type and location

LMI premium can be paid upfront or capitalised into the loan (added to the loan balance and repaid over the loan life).

Typical LMI premiums in 2026

For a typical first home buyer purchasing at $1.0M:

• 80% LVR (no LMI): standard
• 85% LVR (5% deposit beyond 80%): approximately $8,000-12,000 LMI
• 90% LVR: approximately $20,000-25,000 LMI
• 95% LVR: approximately $35,000-45,000 LMI
• 98% LVR (some lenders): approximately $50,000-65,000 LMI

The premium scales non-linearly. The jump from 90% to 95% is much larger than the jump from 85% to 90%, because the marginal risk to the lender increases sharply at higher LVRs.

The "wait and save" alternative

The conventional alternative to paying LMI is to wait and save the additional deposit, reaching 20% LVR before purchase.

For a $1.0M purchase:

• 80% LVR deposit: $200,000
• 90% LVR deposit: $100,000
• Additional savings needed to go from 90% LVR to 80% LVR: $100,000

For a household saving $40,000-60,000 per year toward a deposit, the additional savings take 18-30 months.

The opportunity cost

During those 18-30 months of additional saving:

• The property market continues to move
• The buyer is not in the market

If the property market rises 5-8% per year during the saving period, the same $1.0M property is worth $1.1M-1.16M after 24 months. The new purchase price is $100,000-160,000 higher.

The buyer who saved $100,000 of additional deposit now needs to find another $100,000-160,000 of additional purchase price plus the original deposit. The "saving" disappeared.

The honest comparison

For a buyer choosing between:

Option A: buy now at 90% LVR with LMI

• Purchase price today: $1,000,000
• Deposit: $100,000
• LMI premium: $22,000 (capitalised into loan)
• Loan balance: $922,000
• Immediate position: own the property

Option B: wait 24 months, buy at 80% LVR, no LMI

• Property price in 24 months at 6% growth: $1,124,000
• Deposit required (20%): $225,000
• Additional savings needed beyond today's $100k: $125,000 saved over 24 months
• Loan balance: $899,000
• Position: owned the property for 0 months

Option A has the buyer 24 months ahead, having captured 24 months of capital growth ($60k-90k) plus accumulated equity through loan repayment ($20-30k in principal repayments).

The cost is the $22,000 LMI. The benefit is $80-120k of capital growth and equity accumulation that Option B forgoes.

In a rising market, Option A is the better financial outcome.

When LMI is NOT worth paying

The maths reverses in a flat or declining market.

If property prices are flat or declining:

• Option A buyer pays LMI but gets no capital growth
• Option B buyer waits, saves more, and may even buy at a lower price
• LMI is a real cost with no offsetting benefit

If the buyer's income is uncertain:

• A 90% LVR loan is more vulnerable to financial stress than an 80% LVR loan
• The serviceability buffer is thinner
• Job loss or income reduction has bigger consequences

If the buyer is buying in a soft suburb:

• Some suburbs flat-line for 3-5 years between cycles
• The opportunity cost of waiting is small in those areas
• LMI remains a real cost

The market signal check

Before deciding whether to pay LMI:

Check 1: what is the suburb's price trend?

Use CoreLogic or Domain data to identify the suburb's 12-month and 3-year price growth. If growth is positive 5%+ and the broader market is supportive, LMI may be worth paying. If growth is flat or negative, the case is weaker.

Check 2: what is your saving rate?

If you save $80k+ per year, reaching 20% LVR is faster than market growth. Worth waiting.

If you save $30k per year, market growth almost certainly outpaces your saving. LMI worth paying.

Check 3: how stable is your income?

Stable employment, no dependents, large emergency fund: 90% LVR with LMI is tolerable.

Variable income, recent job change, no emergency fund: lower LVR is safer.

The LMI alternatives

Three pathways that can reduce or avoid LMI:

Alternative 1: FHBG (First Home Buyer Guarantee)

Federal scheme that allows first home buyers to purchase with 5% deposit without LMI. Limited places per year. Eligible first home buyers should always consider this first.

Alternative 2: parental guarantor

A parent or family member can provide a guarantee secured against their own property. The guarantee lifts your effective LVR above 80% without triggering LMI.

Risk to the guarantor: their property is at risk if you default. The arrangement requires careful family discussion and legal advice.

Alternative 3: professional package LMI waiver

Some professions (medical, legal, dental) have access to specific lender packages that waive LMI at higher LVRs (typically up to 90%). Available through specialised lenders.

The capitalising trap

LMI is typically capitalised into the loan balance rather than paid upfront. This is convenient but expensive over the loan life.

A $22,000 LMI capitalised into a 30-year loan at 6.5%:

• Monthly addition: approximately $140
• Total interest paid on the capitalised LMI: approximately $28,000 over 30 years
• Effective cost: $50,000 over the loan life

The capitalisation option is fine for cash flow but doubles the effective LMI cost over the long term.

Some buyers refinance after 3-5 years once LVR has dropped below 80%, removing the LMI from the loan structure. This is the cleanest exit if you can't pay LMI upfront.

LMI is one of the most defensively priced products in Australian property. It is also one of the most strategically deployed. Paying it sometimes accelerates your financial position by years. Refusing it sometimes costs you more than the premium would have. Knowing which case applies to you is the difference between the conventional wisdom and the right wisdom.