Home equity calculator

Unlock your home's value instantly - See how much equity you have available at 80%, 90%, and 95% LVR.

Home Equity Calculator - Buyvest

Home Equity Calculator

Skip to main content
The basics

What is home equity?

Home equity is the difference between your property's current market value and the amount you still owe on your mortgage. It is the share of your home you genuinely own and one of the most valuable financial assets an Australian homeowner can hold. Whether you want to use a home equity calculator to plan your next move, calculate home equity loan options, or simply answer how much equity do I have in my home, this figure is the starting point for every conversation.

Your equity grows in two ways: through your regular mortgage repayments reducing your loan balance, and through capital growth pushing your property value higher. The equity calculation itself is simple, but the implications of your result can open up significant financial opportunities.

Every time someone asks how much equity do I have in my home, the answer comes down to one straightforward subtraction: current market value minus outstanding loan balance. From there, an equity calculator shows how much of that total you can actually access through a lender, after accounting for the minimum security buffer they require.

The core formula
Property value minus outstanding loan balance = home equity
Usable equity: (property value × maximum LVR) minus outstanding loan balance

Understanding LVR

How equity works

When you first purchase a property, your equity equals your deposit. From that day forward it grows passively. Most Australian lenders set their security buffer at 20%, meaning they will lend up to 80% of your property's value before Lenders Mortgage Insurance applies.

Consider an example. If your property is worth $900,000 and your outstanding loan is $500,000, your total equity is $400,000. But at 80% LVR, the calculation is ($900,000 × 0.80) minus $500,000, giving you $220,000 in usable equity. That is the figure that matters when you want to calculate home equity loan amounts.

Worked example
Property value$900,000
Outstanding loan$500,000
Total equity$400,000
Usable equity at 80% LVR$220,000
Calculation($900,000 × 0.80) minus $500,000

Step by step

How to calculate equity in your home

The equity calculation involves two inputs: your current property value and your outstanding loan balance. Our equity calculator goes further by including LMI estimates at 90% and 95% LVR, so the figure you see is net of insurance costs, not just gross equity.

Find your current property value. Use recent comparable sales in your suburb, an online estimate, or a formal valuation.

Check your outstanding loan balance. Log into your lender's app or check your latest statement.

Enter both figures into the equity calculator above. It instantly runs the equity calculation across 80%, 90%, and 95% LVR.

Review the LMI estimates. For the 90% and 95% results, LMI costs are factored in so the figure reflects the true net amount available.

Use your equity calculation to plan. Decide whether to explore equity release, calculate home equity loan options, or simply hold and build further.


The maths explained

Equity calculation: how the numbers work

Total equity calculation

Subtract your outstanding loan balance from your property's current market value. This tells you the total equity locked in your property, though not all of it will be accessible for borrowing.

Usable equity calculation

Apply your chosen LVR to your property value and subtract your existing loan. The result is the equity you can release through refinancing or an additional loan — the figure your lender will use when you calculate home equity loan amounts.

Net equity calculation including LMI

At 90% and 95% LVR, Lenders Mortgage Insurance applies. Our calculator deducts this automatically, so the figure displayed is what you would actually receive, not a pre-insurance estimate.

80% LVR

No LMI applies. Your equity calculation is simply (property value × 0.80) minus your loan balance. This is the baseline scenario most homeowners start with.

90% and 95% LVR

LMI is factored in. The insurance premium is deducted from your gross equity to show the true net result at higher LVR tiers.


Loan options

How to calculate home equity loan amounts

When you want to calculate home equity loan figures, the starting point is always your usable equity at the LVR your lender will approve. Our equity loan calculator makes it easy to see exactly what that figure looks like across three LVR tiers before you speak to anyone.

To calculate home equity loan eligibility, lenders also assess your income, existing debts, and serviceability. But the equity calculation tells you the maximum amount the property itself supports.

Always compare the 80% and 90% LVR scenarios side by side. The additional equity available at 90% LVR may be worth the LMI cost if it allows you to act on a time-sensitive opportunity.


Your position

How much equity do I have in my home?

How much equity do I have in my home is the most common question homeowners ask when they start thinking about their property's financial potential. The answer changes over time as your loan reduces and your property value moves.

Many homeowners who ask how much equity do I have in my home are surprised by the answer, particularly if they purchased in a growth suburb several years ago. If you bought for $650,000 with a $520,000 loan and the property is now worth $950,000 with a $460,000 balance, your equity calculation shows $490,000 in total equity.

Signs your equity has grown

Recent comparable sales in your suburb are higher than your purchase price. Significant time has passed since your purchase. You have made extra repayments.

How to get an accurate figure

Use our home equity calculator with your best estimate of current value. For lending purposes, commission a formal valuation to confirm your true usable equity.


Lender perspective

How do lenders calculate home equity?

Lenders focus on your usable equity above their required security buffer. Most Australian lenders will advance funds up to 80% LVR without LMI, preserving a 20% buffer in the property. At 90% or 95% LVR, LMI reduces the net funds you receive even though the gross equity appears higher.

Beyond the equity calculation itself, lenders weigh your income, existing debts, credit profile, employment type, and property type. The equity calculation sets the ceiling; your financial profile determines whether you can reach it.


Growing your position

How to build equity in your home

01

Extra repayments

Every additional dollar you repay reduces your loan balance and improves every future equity calculation. Switching to fortnightly repayments adds one full extra repayment per year.

02

Capital growth

Rising values in your suburb push every equity calculation higher without any effort on your part. Choosing a high-demand suburb with strong fundamentals maximises passive equity accumulation.

03

Strategic renovation

The right improvements add value above their cost. Value-adding renovations show up directly in your next equity calculation result.


Common questions

Frequently asked questions

Subtract your outstanding mortgage balance from your property's current market value. For example, if your home is worth $800,000 and you owe $350,000, your total equity is $450,000. To find your usable equity, apply your chosen LVR: ($800,000 × 0.80) minus $350,000 = $290,000 at 80% LVR.
Enter your current property value and outstanding loan balance into the home equity calculator above. The equity calculation runs instantly across 80%, 90%, and 95% LVR. If you are unsure of your property's current value, use a conservative estimate or contact Buyvest for a current market assessment.
Total equity: property value minus outstanding loan balance. Usable equity: (property value × maximum LVR%) minus outstanding loan balance. At 90% and 95% LVR, LMI costs are also deducted to give you a true net equity figure.
When you borrow above 80% LVR, LMI applies and reduces your net equity result. Our calculator factors LMI in automatically at 90% and 95% LVR so you see the true net figure rather than a gross pre-insurance estimate.
Yes. The equity calculation works the same way — enter the current value and outstanding loan balance and the calculation runs as normal. Note that lenders may apply different LVR caps for investment properties, so confirm the applicable LVR with your lender before using the figures for final planning.
Running a new equity calculation quarterly is a reasonable habit. Use the calculator each time with an updated estimate of your property's current value. If you are planning to borrow against your equity, run a fresh calculation immediately before any lender conversation.
Run a separate equity calculation for each property. Each calculation uses that property's individual value and loan balance. Lenders may also consider cross-collateralisation, which affects how much equity you can practically access, so speak to Buyvest after running your individual calculations.

Ready to use your equity?

Speak with the Buyvest team for a personalised assessment of your borrowing position and property strategy.

Book a free consultation