The deposit is the biggest hurdle for most first home buyers. How much you need, how to get there, and what help exists can feel overwhelming. The good news is there are clear levers: a standard deposit is large, but KiwiSaver and low-deposit options can bring the goal closer. This guide explains how deposits work, how KiwiSaver and the First Home Loan help, and how to build a realistic savings timeline. It focuses on the concepts and strategy, not on specific prices or rates.
Lenders generally favour a 20% deposit because it avoids the extra costs and tighter rules that apply to low-equity (high loan-to-value) lending. But you do not always need 20%: low-deposit lending exists, and schemes like the First Home Loan allow much smaller deposits for eligible buyers. The size you aim for is a trade-off between getting in sooner and the cost of low-equity lending.
KiwiSaver is the main deposit-building tool for most first home buyers. After a qualifying membership period, you can withdraw most of your balance (a small minimum must stay) toward a first home you will live in. Because your contributions, your employer's contributions, the government contribution and returns have all built up, the withdrawal can be a substantial chunk of a deposit. Choosing a sensible fund for your time horizon matters, money you will need soon is usually better in a lower-risk fund.
The Kainga Ora First Home Loan lets eligible first home buyers borrow with as little as a 5% deposit at standard bank interest rates, subject to income caps and other criteria. It can dramatically shorten the time to buy, since you need far less saved. The trade-off is a larger loan and the criteria you must meet. It is one of the most useful supports for getting in sooner.
How fast you reach your deposit depends on three things: the target amount, how much you save each month, and the return on your savings. Increasing your monthly saving usually has the biggest effect, followed by a sensible (not reckless) return. Lowering the target, via a low-deposit option or a cheaper home, also brings the goal closer.
A deposit goal becomes achievable when you turn it into a monthly savings plan: target deposit, minus what you have (including KiwiSaver), divided by what you can save each month, adjusted for any return. Saving automatically, keeping the money where it grows but is safe for the timeframe, and avoiding lifestyle creep all help. Be wary of stretching to the most expensive house you can technically buy; a smaller deposit gap and a sensible price are safer.
Reality: 20% is preferred and avoids low-equity costs, but low-deposit lending and the First Home Loan allow much smaller deposits for eligible buyers.
Reality: After a qualifying membership period you can withdraw most of your KiwiSaver toward a first home you will live in.
Reality: For money you need within a couple of years, a lower-risk fund reduces the chance of a fall just before you buy. Match the fund to your time horizon.
Reality: It is a low-deposit loan, not free money. You still borrow the rest and repay it; it just lowers the deposit needed.
Reality: How much you save each month usually has a bigger effect than the return, especially over a few years. Saving more is the strongest lever.
Reality: Stretching to the maximum leaves no buffer for rate rises or surprises. A sensible price and deposit are safer than the biggest mortgage you can get.
Set your target deposit, count what you have including KiwiSaver, automate a monthly amount into the right place, and check whether the First Home Loan suits you. A clear monthly plan turns a daunting deposit into a series of achievable steps.
Quiz on Saving for a House Deposit
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