LMI stands for lenders mortgage insurance. It is a one-off insurance premium that usually applies when a borrower has a smaller deposit or higher LVR.

Who does LMI protect?

It protects the lender, not the borrower. The borrower pays the premium, but the insurance is there to cover lender risk.

When do you usually have to pay LMI?

Often when borrowing above standard lower-risk deposit ranges, especially when no eligible alternative pathway applies.

Sometimes. A larger deposit, lower LVR or an eligible guarantee pathway may reduce or remove the need for LMI depending on the scenario.

Can I add LMI to the loan?

Often, yes. But capitalising the premium increases the loan size and can increase both repayments and total interest over time.

Is it better to pay LMI upfront or add it to the loan?

That depends on your cash position. Paying it upfront avoids turning the premium into long-term debt, but adding it to the loan can reduce upfront pressure if cash is tight. The cleaner answer usually depends on what the repayment impact looks like in real life.

Does a bigger deposit always reduce LMI?

Generally, yes. As the deposit improves and the LVR falls, the premium usually becomes less painful and may eventually disappear altogether.

Can first home buyers avoid LMI?

Some eligible first home buyers may be able to avoid LMI through guarantee pathways, but this depends on eligibility, lender participation and the rules applying at the time.

Can I pay LMI again when refinancing?

Potentially, yes. If the refinance pushes the loan into a higher-LVR position or the lender treats the structure differently, LMI may return to the conversation.

Is LMI refunded if I refinance or sell later?

Usually not in any meaningful way you should rely on. It is best treated as a sunk cost rather than something you will neatly recover.

Why is my LMI estimate different from the lender's?

Because actual LMI can vary by lender, insurer, borrower profile, property type and loan structure. This calculator gives a planning estimate, not the final number from a lender's or insurer's pricing system.

Does LMI mean I shouldn't buy yet?

Not necessarily. Sometimes paying LMI is still a rational way to enter the market sooner. The smarter question is whether paying it leaves you in a loan structure that still works for your budget, compared with saving longer or using another eligible path.

What should I do after using an LMI Calculator?

Usually the next steps are to test repayments with and without capitalised LMI, check your deposit strategy, look at LVR, and compare whether a different entry path would improve the whole structure.

What Does a Smaller Deposit Actually Cost?

LMI is one of the more irritating features of low-deposit buying: you pay it, the lender is protected, and your mortgage gets heavier even though the insurance is not really for you. Drag the cost into daylight and see what a smaller deposit may actually do to your loan.

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Upfront vs Capitalised LMI

FHB Scheme Pathway Modelled

No Credit Score Impact

Who this calculator is for

Buyers entering with less than a 20% deposit and wanting to understand the LMI trade-off.
First home buyers deciding whether to buy sooner with a smaller deposit or wait and save longer.
Borrowers comparing whether LMI should be paid upfront, added to the loan or avoided altogether.
Refinancers checking whether a higher-LVR refinance could drag LMI back into the conversation.

What it calculates

An estimated LMI premium based on property value, loan amount and LVR.
How deposit size and loan structure may affect that premium.
The difference between paying LMI upfront and adding it to the loan.

Why it matters

A smaller deposit can get you into the market sooner, but LMI can make that path materially more expensive. Even a modest improvement in deposit size can sometimes cut LMI sharply. "We only need a smaller deposit" is not the same as "this is the cheapest or smartest way in."

LMI Calculator

Property purchase price$750,000

Deposit$60,000 (8.0%)

First home buyer

Unlocks scheme option below

Investor

Investor LMI is typically higher

Use First Home Guarantee pathway

Eligibility-dependent — waives LMI for eligible FHBs at 80–95% LVR

How is LMI paid?

Loan term30 years

Interest rate6.10%

Estimated LMI premium

$26,358

3.82% of loan

LVR

92.0%

Deposit 8.0%

Total loan (incl. LMI)

$716,358

Upfront cash $60,000

Monthly repayment (no LMI)

$4,181

Monthly repayment (LMI added)

$4,341

Extra interest over term

$57,502

An extra $15,000 deposit could drop you to 90% LVR

A modest deposit increase can sharply reduce — or eliminate — the LMI premium. Worth modelling before you commit.

Capitalising LMI reduces upfront cash needed but increases the total loan, the monthly repayment and the interest paid over the loan's life.

LMI protects the lender, not the borrower. This is a guide only — actual premiums vary by lender, insurer, borrower profile, property type and loan structure.

Now you know what the low-deposit path might cost in the cold light of day.

The next step is to decide whether you are better off paying the premium, changing the deposit, or using a different path into the market entirely.

Check deposit options Or test home loan repayments →

How this LMI Calculator works

An LMI Calculator estimates lenders mortgage insurance by looking at the property value, the loan amount and the resulting LVR. In simple terms, the smaller your deposit and the higher the leverage, the more likely LMI becomes part of the deal and the larger the premium may be.

That is because LMI is tied closely to lender risk. As the gap between your deposit and the property value narrows, the lender is taking on more exposure, and the insurance cost tends to rise with it.

The point of this tool is not to scare people away from buying with a smaller deposit. Sometimes that path is still sensible. The point is to show what that shortcut really costs, and whether a slightly bigger deposit, a different loan structure or an eligible guarantee path would produce a better outcome.

Please remember this LMI Calculator is a guide, not a lender quote. It:

Uses the property value, deposit, loan amount and structure you enter.
Estimates LMI only and does not replicate every lender or insurer pricing table.
Assumes any repayment impact from capitalised LMI is based on the loan term and interest rate you enter.
Treats low-deposit schemes or guarantee pathways as eligibility-dependent, not automatic.
Does not replace lender policy, insurer approval or formal credit assessment.

Pay LMI, avoid LMI, or use a scheme?

This is the real decision hiding underneath the calculator. Most borrowers are not actually asking "what is the premium?" They are asking which path makes the most sense.

Pay LMI and buy sooner

Can be rational if entering the market earlier matters and the rest of the loan still behaves well. The premium may be annoying, but sometimes paying it is still better than waiting indefinitely.

Save a larger deposit and reduce or avoid LMI

Can improve the structure of the whole loan, not just remove one fee. A larger deposit can reduce LVR, reduce the premium or wipe it out altogether, and often leaves the borrower with a cleaner mortgage from day one.

Use an eligible scheme or guarantee pathway

The First Home Guarantee allows eligible first home buyers to purchase with a 5% deposit and no LMI. These pathways can be powerful, but they are not universal and should be treated like rule-based pathways, not free magic.

The right answer is not ideological. It depends on your time frame, budget strength, deposit trajectory and whether the low-deposit path still leaves the mortgage manageable after the adrenaline wears off.

Upfront LMI vs capitalised LMI

This choice matters more than people think.

Paying LMI upfront

Hurts cash now, but it avoids turning the premium into long-term debt.

Capitalising LMI

Adds the premium to the loan, which can make the upfront hurdle easier but increases the debt, the repayments and the total interest paid over time.

Neither option is morally superior. The smarter option is the one that makes the overall structure stronger rather than simply making settlement day easier.

What this calculator includes and doesn't include

Generally includes

Indicative LMI premium.
LVR estimate.
Deposit percentage.
Optional repayment impact where LMI is added to the loan.
Scenario testing based on deposit size and loan structure.

Generally does not fully include

Exact insurer pricing tables.
Full lender-specific policy rules.
Confirmed government-scheme eligibility.
Every fee associated with buying or refinancing.
Final approval outcomes or product-specific exceptions.

The tool is there to show the likely pressure, not to impersonate the final lender pack.

How to interpret your results

Read the result in layers, not just as one ugly fee.

Premium size. What the insurance may cost at your current deposit and LVR.
Structure impact. Whether the premium is being paid upfront or quietly turned into more debt.
Deposit trade-off. Whether waiting for a stronger deposit might materially improve the result.
Alternative-path question. Whether a scheme, guarantee or different borrowing setup might reduce or remove the LMI issue.

If the premium is high, that does not automatically mean "do not buy." It means you are paying for earlier entry with a higher-LVR loan. That can still be worth it in the right circumstances, but only if the cost is looked at honestly instead of being waved away because the purchase itself feels exciting.

How to find repayments that fit your budget

LMI is not just a one-off irritation. If you add it to the loan, it becomes part of the debt and can lift your repayments and the total interest paid over time. That means the next step after estimating LMI is to test the mortgage with the premium included, not to pretend it lives outside the loan. A smarter sequence looks like this:

Use the LMI Calculator to estimate the premium under your current deposit scenario.
Test the result again with a larger deposit to see whether the premium falls enough to justify waiting.
If relevant, compare the outcome with an eligible guarantee or low-deposit pathway.
Then run the loan amount through the Home Loan Repayment Calculator both with and without capitalised LMI.
Use the Deposit Calculator and LVR Calculator to see whether changing the deposit structure improves the entire deal, not just one line item.

The immature version of this process says "we can add the LMI to the loan and deal with it later." The better version says "show me what later actually costs." LoanGorilla has much more patience for the second one.

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Calculator assumptions

This calculator estimates LMI using simplified premium tiers based on LVR bands (80–85%, 85–90%, 90–95%, 95%+) with an indicative uplift for investor lending. Premiums are shown as a percentage of the base loan and capitalised by default unless the upfront option is selected. Scheme outcomes (e.g. First Home Guarantee) are modelled as eligibility-dependent and waive the modelled premium when toggled on for first home buyers between 80% and 95% LVR — actual eligibility, lender participation and scheme rules vary. Repayment impacts use the loan term and interest rate you enter on a principal-and-interest basis. The calculator does not replicate insurer pricing systems and does not replace lender policy or formal approval. Reviewed by the LoanGorilla editorial team — last updated May 2026.

LMI Calculator FAQs

Credit information: LoanGorilla is a credit assistance provider. Information on this page is general in nature and does not constitute financial or credit advice. Consider whether any home loan product is appropriate for your circumstances. We recommend seeking independent financial and legal advice before making borrowing decisions.

Comparison rate warning: Comparison rates are based on a secured loan of $150,000 over 25 years. WARNING: This comparison rate is true only for the example given and may not include all fees and charges. Different loan amounts, loan terms or fees may result in a different comparison rate. Rates are subject to change without notice.