Understanding how much equity you have in your home can be an important part of managing your mortgage and planning future borrowing. Whether you are considering refinancing, renovating your property, purchasing another investment property, consolidating debt, or simply reviewing your financial position, knowing the difference between your property’s current value and your outstanding home loan can provide useful information.
Westpac Equity Calculator
What Is Home Equity?
Home equity is the difference between the current market value of a property and the outstanding balance of the mortgage secured against it.
The basic formula is:
Home Equity = Current Property Value − Outstanding Home Loan Balance
For example, suppose your home is currently worth $750,000 and your outstanding mortgage is $450,000.
Your estimated equity would be:
$750,000 − $450,000 = $300,000
This means you have approximately $300,000 of equity in the property.
Equity can come from several sources. You may have built equity by making mortgage repayments, making additional repayments, receiving an increase in property value, or purchasing the property with a substantial initial deposit.
It is important to remember that equity is based on the property's current estimated value. If the property's market value changes, your equity can change even if your mortgage balance remains exactly the same.
What Does the Westpac Equity Calculator Calculate?
The calculator provides five key results:
- Current Home Equity
- Equity Percentage
- Current LVR
- Maximum Loan at Selected LVR
- Potential Usable Equity
Each result provides a different perspective on your property's financial position.
1. Current Home Equity
Current home equity represents the difference between the property value and outstanding mortgage balance.
Formula:
Current Equity = Property Value − Loan Balance
A higher property value and lower mortgage balance generally result in greater equity.
2. Equity Percentage
The equity percentage shows what proportion of your property value is represented by your equity.
Formula:
Equity Percentage = (Equity ÷ Property Value) × 100
For example, if your home is worth $600,000 and you owe $360,000:
- Equity = $240,000
- Equity percentage = $240,000 ÷ $600,000 × 100
- Equity percentage = 40%
This means approximately 40% of the property's current value represents equity.
3. Current LVR
LVR, or Loan-to-Value Ratio, compares the amount you owe on your mortgage with the current value of your property.
The formula is:
Current LVR = (Outstanding Loan Balance ÷ Property Value) × 100
For example:
- Property value = $600,000
- Loan balance = $360,000
Therefore:
($360,000 ÷ $600,000) × 100 = 60% LVR
A lower LVR means the mortgage represents a smaller proportion of the property's value.
4. Maximum Loan at Selected LVR
The calculator also estimates the total loan amount associated with the LVR percentage you enter.
The formula is:
Maximum Loan = Property Value × (Selected LVR ÷ 100)
For example, with a property value of $600,000 and an 80% LVR:
$600,000 × 0.80 = $480,000
The calculator therefore shows a maximum loan amount of $480,000 at an 80% LVR.
This is a mathematical estimate and should not be interpreted as an approval or guarantee of borrowing capacity.
5. Potential Usable Equity
Potential usable equity estimates the difference between the maximum loan at your selected LVR and your current outstanding loan balance.
The formula is:
Potential Usable Equity = Maximum Loan at Selected LVR − Current Loan Balance
For example:
- Property value = $600,000
- Selected LVR = 80%
- Maximum loan = $480,000
- Existing loan = $360,000
Potential usable equity:
$480,000 − $360,000 = $120,000
The calculator reports this as $120,000.
If the calculation produces a negative amount, the tool displays potential usable equity as zero.
How to Use the Westpac Equity Calculator
Using the calculator requires only three main inputs.
Step 1: Enter Your Current Property Value
Enter the estimated current market value of your property.
This should not necessarily be the price you originally paid for the home. Property values can change over time, so an estimate based on the property's current market value is more relevant when calculating current equity.
For example, if you purchased your home for $500,000 several years ago and believe it is now worth $650,000, you would enter approximately $650,000.
For more accurate planning, consider obtaining a reliable property valuation or researching comparable recent sales.
Step 2: Enter Your Outstanding Home Loan Balance
Enter the amount currently remaining on your mortgage.
Do not enter your original loan amount unless it is still the amount you owe.
For example, if you originally borrowed $450,000 but have reduced your mortgage to $380,000, enter $380,000.
Step 3: Enter the Maximum LVR
Enter the LVR percentage you want to use for the calculation.
The calculator uses 80% as the default value, but you can change it.
For example, you could enter:
- 60%
- 70%
- 75%
- 80%
- 85%
The appropriate LVR for a particular borrowing situation depends on the lender, loan type, property, borrower circumstances, and applicable lending requirements.
Step 4: Select Calculate
After entering the information, select Calculate.
The calculator will display the estimated:
- Current home equity
- Equity percentage
- Current LVR
- Maximum loan at the selected LVR
- Potential usable equity
Step 5: Review the Results
Use the results as a starting point for understanding your property's position.
If you want to perform another calculation, you can use the reset function and enter a new set of figures.
Westpac Equity Calculator Example
Consider a homeowner with the following figures:
| Input | Example |
|---|---|
| Current Property Value | $800,000 |
| Outstanding Home Loan | $500,000 |
| Maximum LVR | 80% |
Step 1: Calculate Home Equity
$800,000 − $500,000 = $300,000
The estimated current home equity is $300,000.
Step 2: Calculate Equity Percentage
($300,000 ÷ $800,000) × 100 = 37.50%
The estimated equity percentage is 37.50%.
Step 3: Calculate Current LVR
($500,000 ÷ $800,000) × 100 = 62.50%
The current LVR is 62.50%.
Step 4: Calculate Maximum Loan at 80% LVR
$800,000 × 80% = $640,000
The estimated maximum loan at an 80% LVR is $640,000.
Step 5: Calculate Potential Usable Equity
$640,000 − $500,000 = $140,000
The calculator therefore estimates potential usable equity of $140,000.
This example demonstrates an important distinction: the homeowner has $300,000 in total equity, but the calculated potential usable equity at an 80% LVR is $140,000.
The entire $300,000 of equity is therefore not automatically treated as available borrowing.
Home Equity vs Usable Equity
These two terms are sometimes confused.
Home equity is the amount of the property value that is not represented by the outstanding mortgage.
Usable equity is an estimate of the portion that could potentially support additional borrowing under a specified LVR assumption.
For example:
| Measure | Amount |
|---|---|
| Property Value | $800,000 |
| Mortgage Balance | $500,000 |
| Total Equity | $300,000 |
| 80% Maximum Loan | $640,000 |
| Potential Usable Equity | $140,000 |
The distinction is important when planning additional borrowing.
Even if your calculation shows substantial potential usable equity, a lender may assess your application using additional requirements.
Why LVR Matters
Loan-to-value ratio is one of the most important concepts when evaluating mortgage leverage.
A property worth $700,000 with a $350,000 mortgage has:
50% LVR
A property worth $700,000 with a $560,000 mortgage has:
80% LVR
The second homeowner owes a larger percentage of the property's value.
LVR can be affected by both sides of the equation. If the loan balance decreases, LVR may fall. If the property value increases while the loan stays unchanged, LVR can also fall.
Conversely, if property values decline, the LVR can increase even when the homeowner has continued making mortgage payments.
Factors That Can Increase Your Home Equity
Several factors can contribute to growing equity.
Mortgage Repayments
Every principal repayment reduces the amount owed on the mortgage. Assuming the property value remains unchanged, reducing the loan balance increases equity.
Property Value Growth
If the market value of your property increases, your equity can increase even without additional mortgage repayments.
For example:
- Original value: $500,000
- New estimated value: $600,000
- Mortgage balance: $350,000
Original equity:
$500,000 − $350,000 = $150,000
New equity:
$600,000 − $350,000 = $250,000
The increase in estimated property value has increased the calculated equity.
Additional Mortgage Payments
Making additional principal payments can reduce the outstanding balance faster, potentially increasing equity.
However, homeowners should consider their loan terms, cash-flow needs, fees, and other financial priorities before making additional payments.
Renovations and Improvements
Certain improvements may increase a property's market value, although the cost of a renovation does not necessarily translate dollar-for-dollar into increased property value.
The effect depends on the type of improvement, property condition, local market, quality of work, and buyer demand.
What Can You Potentially Use Home Equity For?
Depending on your circumstances and lender requirements, equity may be considered when financing various purposes.
Potential uses can include:
- Home renovations
- Property improvements
- Purchasing another property
- Investment property financing
- Refinancing
- Debt consolidation
- Major personal expenses
However, using home equity means increasing or restructuring debt secured against your property. Additional borrowing can increase repayments and total interest costs.
A calculator can estimate the mathematical amount, but it cannot determine whether borrowing is appropriate for your financial circumstances.
Important Things to Consider Before Using Equity
Before relying on an equity estimate, consider several factors.
Property Valuation
Your actual property value may differ from your estimate. A lender may use its own valuation method when assessing a loan application.
Interest Rates
Additional borrowing creates additional interest costs. If interest rates change, repayments can also change depending on the loan structure.
Borrowing Capacity
Having sufficient equity does not automatically mean you can borrow the calculated amount. Lenders can consider income, existing debts, living expenses, employment, credit history, loan terms, and other factors.
Fees and Costs
Refinancing, restructuring a mortgage, or obtaining additional lending can involve fees and other costs.
Market Changes
Property values are not guaranteed to rise. A decline in property value can reduce equity and increase LVR.
Loan Purpose
The purpose of additional borrowing can affect how a lender structures and assesses the loan.
Equity Calculation Table
The following table shows how property value and loan balance interact when calculating equity.
| Property Value | Loan Balance | Estimated Equity | Equity % | Current LVR |
|---|---|---|---|---|
| $400,000 | $300,000 | $100,000 | 25% | 75% |
| $500,000 | $350,000 | $150,000 | 30% | 70% |
| $600,000 | $360,000 | $240,000 | 40% | 60% |
| $700,000 | $420,000 | $280,000 | 40% | 60% |
| $800,000 | $500,000 | $300,000 | 37.5% | 62.5% |
| $1,000,000 | $600,000 | $400,000 | 40% | 60% |
These examples are mathematical illustrations rather than lending offers or guarantees.
How Property Value Affects Equity
Suppose your mortgage balance stays at $400,000.
If your property is worth $600,000:
Equity = $200,000
If the property's estimated value increases to $700,000:
Equity = $300,000
If it increases to $800,000:
Equity = $400,000
This illustrates why property valuation is so important when estimating equity.
However, market values can also move downward. If the same property falls from $800,000 to $700,000 while the loan remains $400,000, calculated equity falls from $400,000 to $300,000.
How Loan Repayments Affect Equity
Now assume a property remains worth $700,000.
If the mortgage balance is $500,000:
Equity = $200,000
After reducing the mortgage to $450,000:
Equity = $250,000
After reducing it to $400,000:
Equity = $300,000
The property's value has not changed, but equity has increased because the outstanding debt has decreased.
This is one reason regular principal mortgage repayments can gradually build home equity.
Is the Westpac Equity Calculator an Official Lending Assessment?
The calculator is an estimation tool based on the mathematical inputs entered by the user. It should not be treated as an official loan approval, valuation, or lending assessment.
The result does not account for every factor that a lender may consider.
For a real borrowing decision, borrowers should verify their property's value, mortgage balance, lending conditions, fees, and borrowing capacity with the relevant lender or a qualified financial professional.
Benefits of Using an Equity Calculator
An equity calculator can be useful because it allows you to quickly:
- Estimate your current home equity
- Understand your equity percentage
- Calculate your current LVR
- Explore different LVR assumptions
- Estimate a maximum loan amount at a selected LVR
- Estimate potential usable equity
- Compare different property-value scenarios
- Prepare for a mortgage discussion
- Understand how loan repayments affect your position
It can also help homeowners understand the difference between total equity and potential usable equity, which is particularly important when considering additional borrowing.
Frequently Asked Questions
1. What is a Westpac Equity Calculator?
A Westpac Equity Calculator is a tool for estimating home equity and related mortgage measures using a property's current value, outstanding loan balance, and selected LVR. The calculator can also estimate potential usable equity.
2. How do I calculate my home equity?
Subtract your outstanding home loan balance from the current value of your property.
Home Equity = Property Value − Loan Balance
For example, a $700,000 property with a $400,000 mortgage has approximately $300,000 of equity.
3. What is an 80% LVR?
An 80% LVR means the loan represents 80% of the property's value. For a $500,000 property, an 80% LVR corresponds to a loan amount of $400,000.
4. Is usable equity the same as total equity?
No. Total equity is the difference between property value and mortgage balance. Potential usable equity is an estimate based on a selected maximum LVR and the existing loan balance.
5. Why does the calculator use 80% as the default LVR?
The calculator uses 80% as its default input to provide a common example of an LVR threshold. Users can change the percentage to explore other scenarios.
6. Can I use equity to buy another property?
Home equity may potentially be considered when obtaining additional finance for another property, subject to the lender's assessment, loan structure, income, expenses, existing debt, property value, and other requirements.
7. Does increasing property value increase my equity?
Generally, if your mortgage balance stays unchanged and the property's market value increases, the calculated equity increases. However, the actual market value needs to be established appropriately.
8. Does paying off my mortgage increase equity?
Yes. If the property's value stays the same, reducing your outstanding mortgage balance increases the difference between the property value and the loan balance.
9. What happens if my property value falls?
A decrease in property value can reduce your calculated equity. If the mortgage balance remains unchanged, a lower property value also results in a higher LVR.
10. Can I borrow all of my home equity?
Not necessarily. Total equity and borrowing capacity are different concepts. A lender may apply an LVR limit and assess income, expenses, existing debts, credit history, and other requirements before determining how much additional borrowing may be available.
11. What information do I need to use this calculator?
You need three primary figures: your current estimated property value, outstanding home loan balance, and the maximum LVR percentage you want to use.
12. What does current LVR mean?
Current LVR is the outstanding home loan expressed as a percentage of the property's current value.
Current LVR = Loan Balance ÷ Property Value × 100
13. Why is my potential usable equity lower than my total equity?
Potential usable equity is calculated using the selected LVR limit. A portion of your total equity may therefore remain outside the amount calculated as potentially available for additional borrowing.
14. Is the calculator result guaranteed by a lender?
No. The result is an estimate based on the numbers entered. A lender's actual assessment can include many additional factors and may produce a different result.
15. Should I use an estimated or professional property valuation?
For a basic calculation, an estimated current market value can be useful. For an actual lending decision, however, the lender may require or obtain its own valuation or assessment of the property.
Final Thoughts
Understanding home equity can make mortgage planning easier. The Westpac Equity Calculator provides a simple way to estimate the relationship between your property's value, mortgage balance, equity, and LVR.
The key calculations are straightforward:
Home Equity = Property Value − Loan Balance
Equity Percentage = Equity ÷ Property Value × 100
Current LVR = Loan Balance ÷ Property Value × 100
Maximum Loan = Property Value × Selected LVR
Potential Usable Equity = Maximum Loan − Existing Loan Balance
These calculations can help you understand your current position and explore different scenarios. For example, you can see how your potential usable equity changes when the property value increases, the mortgage balance decreases, or a different LVR assumption is used.
At the same time, an equity estimate should be viewed as a planning figure rather than a promise of available finance. Actual lending decisions can depend on property valuation, income, expenses, existing debts, credit history, loan purpose, interest rates, lender policies, and other applicable requirements.
By entering accurate figures into the calculator and understanding what each result represents, you can get a clearer picture of your property's estimated equity and use that information as a starting point for further mortgage planning.