If you’ve owned your home for a few years, there’s a good chance you’ve built up equity . However, using that equity is not the same as saving a traditional cash deposit.
Many New Zealand property owners use equity as a way to support an investment property purchase, restructure lending, or access additional borrowing power. However, lenders assess usable equity differently from cash savings.
Understanding how equity works, how much may actually be usable, and how lenders assess it is important before deciding whether this approach suits your situation.
Equity is the gap between what your property is worth and what you still owe.
Say your home is valued at $900,000 and your remaining mortgage is $400,000, then you have $500,000 in equity. Over time, as your loan reduces and your property value grows, that gap tends to widen.
However, not all of the full $500,000 can necessarily be accessed. Lenders usually only allow you to borrow against a portion of your equity, based on their criteria and your overall financial position.
Having equity is a good starting point — but lenders don’t just look at your property value in isolation.
When you apply to use equity for an investment purchase, they’ll consider:
Equity gives you something to work with. However, it’s your income and ability to service the loan that ultimately determines how much a lender will allow you to borrow. Lenders typically assess this using debt-to-income ratios and other serviceability measures.
When using equity to support an investment property purchase, lending is often structured differently from a standard home loan.
In many cases, lenders may:
The exact structure depends on your equity position, income, and overall financial situation. The key point is that equity-based lending is assessed as part of a broader financial strategy, rather than a standalone deposit decision.
Because of this, structuring matters, and getting it right early can make a significant difference in flexibility and future options.
These are just a few of the common ways lending can be structured, and the right option often depends on your overall financial position and long-term plans. If you want to understand the wider mortgage approval process, loan structure and lender assessment, read our guide to investment property mortgage options in New Zealand.
Using equity is different from contributing cash savings. A cash deposit is money you have saved and can contribute directly toward a purchase. Equity is based on the value of your existing property compared with what you still owe.
While equity may reduce the amount of cash needed to complete an investment property purchase, not all equity is automatically usable. Lenders still assess your overall financial position, including income, existing lending, servicing, property type, risk policy and how much usable equity is available.
This distinction matters because it affects how the application is structured, how much you may be able to borrow, and which lending options may be available. Using equity can support an investment purchase, but it is not a way around normal lending requirements.
If your main question is how much deposit you need, or whether a 10% or 20% investment property deposit may be possible, read our dedicated guide to minimum deposit options for investment property in New Zealand.
Using equity to invest increases your total debt and with that comes more exposure. A few things worth considering carefully:
We sometimes talk to clients who have strong equity but are already stretched on income — two jobs, a young family, existing commitments. In that situation, adding another mortgage can work, but the margin for error is smaller than people expect. It’s not about whether the strategy is good or bad. It’s about whether the timing and the numbers are right for where you are now.
Interest-only loans: You pay only the interest for a set period, which keeps repayments lower and can help with cash flow early on. The loan balance stays the same during this time.
Principal and interest loans: Repayments cover both interest and part of the loan. It builds equity over time, though your short-term repayments will be higher.
Split loans: Part of the loan is fixed, part is floating. It’s a way of balancing rate certainty with flexibility, and it’s a common structure for property investors.
How you structure your investment lending can have tax implications, specifically around what interest costs you can deduct. The rules in New Zealand have changed in recent years, so understanding how interest deductibility works for investment properties in New Zealand is an important part of structuring lending correctly.
A few things for investors to be mindful of:
Investors who run into difficulty are rarely the ones who were too cautious. Getting clear on the financing before you’re under contract matters. If the deal doesn’t stack up on the lending side, you can find yourself in a difficult position with a vendor expecting settlement
We have found using equity works well when someone has a clear picture of what they’re trying to achieve, their income has room to absorb more lending, and they’re not relying on everything going to plan.
Where it gets harder is when someone is already managing tight repayments, counting on rental income to cover most of the mortgage, or hasn’t factored in what a one or two percent rate increase would actually mean for their monthly outgoings. Those aren’t reasons to rule it out, however, they are questions worth considering before you commit.
The lending structure on an investment property matters more than most people realise when they first start looking. How it’s set up affects your cash flow, how you’re treated at tax time, and how much flexibility you have if your circumstances change. Using equity can be a powerful way to move forward, but it works best when it’s part of a clearly planned strategy rather than a solution. So, using equity to buy an investment property can open up opportunities, but it also needs to be structured correctly from the start.
Every situation is different, and small differences in how lending is set up can have a big impact over time.
If you’re seriously considering this approach, it’s worth talking it through with someone who understands both the lending side and the strategy behind it.
Angela is an accredited Financial Adviser, licensed under FSP742251 and has been in the Financial Industry since 2006. Our 5-star Google reviews reflect the excellent customer experience we promise — making your home loan journey positive, stress-free, and rewarding. At Platinum Mortgages, our clients are the reason we exist — so you can be confident every step is guided by genuine care and expertise.
