Usable Equity Calculator
Find out the level of equity within your home, how much of your equity is usable, and how much you could borrow to buy an investment property.
In New Zealand, if you are looking at buying a new build property, banks allow you to borrow up to 80% of your owner-occupied home value minus your current mortgage balance.
Your Usable Equity Breakdown
Here is your estimated borrowing power calculated against an 80% bank LVR rule.
Important — this is not financial advice
This calculator is for general information only. Usable equity is calculated at 80% of your home value minus existing debt. Serviceability and lending approval depend on your full financial situation and income.
Want to Better Understand Your Usable Equity?
Schedule a personalised strategy call with our Director, Hamish Cowan, to review your usable equity results.
Book Your Free Clarity Call →How Banks Calculate Usable Equity
A common misconception is that banks allow you to take 80% of your remaining home equity. In reality, Reserve Bank (RBNZ) guidelines dictate that a bank can lend up to 80% of your home's total value, minus what you currently owe.
Example Calculation ($1,000,000 Home Value, $500,000 Mortgage):
- Maximum 80% Lending Cap: $1,000,000 × 80% = $800,000
- Minus Existing Mortgage: $800,000 - $500,000 = $300,000 Usable Equity
If a bank lent $400,000, your total debt would rise to $900,000 ($500k mortgage + $400k equity). That would equal a 90% LVR on your home, which exceeds standard bank limits for owner-occupied properties.
Just a heads-up
This calculation is based on equity only. This isn’t a bank pre-approval or a guarantee you can borrow this amount. Your ability to borrow and unlock this equity will also depend on your income and expenses. You may only be able to borrow approx. 7 times your income. You’ll need to complete a full mortgage application so the bank can confirm how much they’re willing to lend based on your full financial position.
Most Kiwi couples face a $1,000,000 retirement gap.
The equity in your home could help close it. Grab our free, plain-English guide and see exactly how.
We've kept this simple on purpose. Add your details and we'll send the guide straight to your inbox, then take you to your download in a click.
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What is home equity?
Home equity is the difference between what your property is worth and what you still owe on your mortgage. As your loan shrinks and property values grow, your equity builds. That equity grows and can become the launchpad for your next investment.
Simple example:
- Property value: $800,000
- Mortgage owing: $500,000
- Equity: $300,000
Usable equity vs. total equity
Not all your equity is available to use. Lenders usually let you access up to 80% of your property's value, minus what you still owe.
Here's how that works:
- Property value: $800,000
- 80% of value: $640,000
- Mortgage owing: $500,000
- Usable equity: $140,000
This $140,000 of usable equity can be used as a deposit for a new build investment property worth $700,000.
Why equity matters for investors
Equity lets you grow your portfolio without a cash deposit sitting in the bank. Many Kiwis use the equity in their home to buy their first, or next, investment property. It's one of the most common ways to build long-term wealth through property.
Your first investment property, and your path to $1,000,000, is closer than you think.
Book a free 15-minute Clarity Call and get a straight answer on whether property investment is right for you. No pressure, no jargon, no obligation, just clarity you can act on today.
Free and no obligation. If it's not the right fit, we'll tell you straight and point you to what is.
Disclaimer
The information in this guide and calculator is provided for general informational and educational purposes only. It does not constitute financial, mortgage, investment, tax, or legal advice, and should not be relied upon as such.