Home Loans
Home Loan Deposit NZ: How Much Do You Actually Need?
Photo: Artful Homes / Pexels
Twenty percent used to be the rule for a home loan deposit. (These days it's more of a suggestion, ignored about as often as it's followed.) The short version: 10–20% for most owner-occupiers, as little as 5% for an eligible first home buyer, and 35% if you're buying to rent it out.
What actually sets your number is the property, the lender, and whether you qualify for a low-deposit scheme most people have heard of but nobody's explained properly. That's what the rest of this is for.
The Short Answer: How Much You Actually Need
For a standard owner-occupier home loan, most lenders want a 10–20% deposit — that's an 80–90% loan-to-value ratio (LVR). Some lenders will go as low as 5–10% in the right circumstances.
If you're an eligible first home buyer, the Kāinga Ora-backed First Home Loan can get you in with as little as 5%. If you're buying to rent it out, plan on 35% — a 65% LVR — under the Reserve Bank's current investment lending restrictions.
Building rather than buying existing? Construction loans typically need a 15–20% deposit for the land and build combined, though the First Home Loan scheme can allow as little as 5% on the land component for eligible buyers. Different question, different number — which is exactly why "how much deposit do I need" doesn't have one answer.
Why the 20% Rule Isn't Really a Rule
The 20% figure comes from the Reserve Bank's loan-to-value ratio restrictions, not from any single bank's house style. Each bank can only write a limited share of its lending to borrowers with less than 20% deposit each quarter — a "speed limit," not a hard ban.
That means a deposit under 20% isn't automatically declined. It gets more scrutiny, and sometimes a higher interest margin, because the bank is spending part of its low-deposit allowance on your file instead of someone else's. Whether that happens depends on the bank's current appetite that quarter — which changes, and which most borrowers never see from the outside. Nobody hands out a memo when the allowance resets, least of all to borrowers standing at the counter with a deposit and a dream.
This is the part that trips people up: two borrowers with the same 10% deposit can get two different answers from two different banks in the same week, for reasons that have nothing to do with either application. See the Reserve Bank's own explanation of current LVR restrictions for the mechanics, then talk to someone who knows which bank has room left this quarter.
Where Your Deposit Can Actually Come From
Genuine savings is the starting point every lender wants to see — money that's built up over time in your own accounts, not appeared the week before you applied. KiwiSaver withdrawal and First Home Grant support sit alongside that for eligible first home buyers, and can make up a meaningful chunk of the total.
A gifted deposit from family is common too. Most lenders will accept it, usually with a signed letter confirming it's a genuine gift and not a loan you're quietly expected to repay. Ask what your specific lender wants in writing before you assume the cash landing in your account is enough on its own.
Then there's a guarantor — someone using the equity in their own home to help you meet the deposit shortfall. It works, and it can get a deal across the line that wouldn't otherwise happen. I still treat it as a last resort, not the first thing on offer. It's the fastest way to turn one missed payment into two families at risk instead of one, and it only belongs in the conversation once the other options are genuinely exhausted.
The 5% Route: Kāinga Ora's First Home Loan
The First Home Loan is a Kāinga Ora-backed scheme that lets eligible first home buyers borrow with as little as a 5% deposit, well under the standard 10–20%. It's not a separate lender — it's a government guarantee sitting behind participating lenders, which is why the deposit bar can sit so much lower without breaching the usual LVR restrictions.
Income caps and regional house price caps apply, and both move over time, so I'm not going to print a number here that might be stale by the time you read it. Check current figures on kaingaora.govt.nz, or ask us — we check eligibility against the current caps as part of every first home buyer conversation, not as an afterthought.
A 5% deposit doesn't mean a smaller loan gets treated casually. Lenders still run full serviceability checks on the remaining 95% — the low deposit gets you in the door, it doesn't change what you need to prove once you're through it.
Investment Properties and New Builds: Different Numbers
Buying to live in and buying to rent out sit under different rules entirely. Standard investment lending needs a 35% deposit — a 65% LVR — under the Reserve Bank's current restrictions. Non-bank lenders on our panel can sometimes work with less, particularly where you've got strong existing equity or a higher income, but 35% is the number to plan a purchase around first.
A deposit request that outstrips what the numbers actually support is its own kind of ambitious — somewhere between a hole-in-one and my current golf handicap.
Building instead of buying changes the shape of it again. Construction loans generally need 15–20% deposit for the land and build combined, drawn down in stages as the build progresses — interest-only while it's underway, converting to principal and interest once it's finished. The First Home Loan scheme can allow as little as 5% on the land component for eligible buyers, which is worth asking about early if building is even a maybe. See our page on building a new home for how the drawdown stages actually work, or first time investors if the rental side is the plan.
When the Deposit Isn't Actually the Problem
A young couple came to me with a combined income around $110,000, a 10% deposit saved, and KiwiSaver ready to withdraw on top. On paper, that's a strong file. ANZ still declined — not over the deposit, but because one partner had been on a fixed-term employment contract for less than six months, and the bank wanted 12 months of continuous PAYE income before it would extend credit.
The deposit was never the issue. The policy checklist was. I placed them with a lender whose employment-contract policy was more flexible, used the KiwiSaver withdrawal to round out the deposit, and they settled on their first home in South Auckland.
That's the pattern I see more often than people expect: banks decline good applications on a policy checklist, not because the numbers don't work. A non-bank or second-tier lender can look at the same deposit, the same income, and say yes where a bank's checklist said no. See our guide to non-bank home loan lenders for when that's worth pursuing on its own.
Why This Is Easier With the Right Adviser
Knowing your deposit percentage is step one. Knowing which of our 20 banks and non-bank lenders — 7 banks, 13 non-bank — will actually work with that deposit, your income, and your specific property is the part that saves weeks. We compare your file across the whole panel before recommending anything, rather than assuming your first-choice bank is the only option.
We reply within 2 business hours, and we've settled 200+ home loans since 2017 — plenty of them exactly this kind of "the deposit's fine, the policy wasn't" situation. There's no fee for that initial conversation. In the typical case, the lender pays us once the loan settles, and we disclose exactly how before anything's lodged.
AML Financial Services Limited is a licensed Financial Advice Provider — FSP 714331. Kundan Singh, FSP 512966. Both on the public register, worth checking for any adviser you're talking to, not just us.
Know your deposit and your numbers before the first call — "I've got a 10% deposit, I'm PAYE, here's my income" gets taken seriously faster than a vague "we're thinking about it maybe next year." Sorted doesn't happen by accident. Give us a call before you spend another weekend guessing which percentage applies to you.