Work out how long it will take to save a house deposit in New Zealand. Enter your target property price, current savings, KiwiSaver balance, and monthly savings amount. The calculator shows your timeline to 10%, 20%, and 25% deposit thresholds, whether house price growth is outrunning your savings, and your eligibility for the First Home Grant.
| Year | Cash savings | KiwiSaver | Combined | Property price | 10% needed | 20% needed | % of 20% |
|---|
The minimum deposit for most NZ owner-occupier home loans is 10% of the purchase price. However, borrowing more than 80% of a property's value typically attracts a low equity premium or margin on your interest rate, adding approximately 0.5-1.0% to your rate. Over a 30-year loan this can cost tens of thousands of dollars more in interest. The Reserve Bank's LVR restrictions also limit how many high-LVR loans banks can issue. Most buyers aim for a 20% deposit to access the full range of products and the most competitive rates.
If you have been a KiwiSaver member for at least three years and have never previously owned a home, you can withdraw almost your entire balance (you must leave $1,000 behind) to use as a house deposit. All contributions are included: your own, your employer's, and any member tax credits from IRD. For many first home buyers this is their single largest source of deposit funds, often $20,000-$60,000 depending on age and years contributing. The withdrawal cannot be reversed, so once it is withdrawn it does not return to your KiwiSaver account.
The First Home Grant is administered by Kainga Ora and provides up to $10,000 per applicant toward a first home. The amount is $1,000 per year of KiwiSaver membership for an existing home (up to $5,000 per person) or $2,000 per year for a new build (up to $10,000 per person), capped at five years of membership. For two buyers purchasing together, the maximum combined grant is $10,000 for an existing home or $20,000 for a new build. Income caps apply ($95,000 for a single buyer, $150,000 combined). Property price caps apply to existing homes in some regions. Check the current details at kaingaora.govt.nz as these figures are reviewed periodically.
If house prices grow at 3-5% per year, your deposit target keeps moving upward as you save toward it. At 3% growth on a $750,000 property, the house costs approximately $869,000 in five years, requiring $174,000 as a 20% deposit rather than $150,000. The calculator accounts for this moving target and shows the year in which your savings will actually be enough to meet the deposit requirement on that property, not just when you hit the dollar figure based on today's price. If house price growth is outrunning your savings rate, the calculator will flag this.
The most effective moves for NZ first home buyers: increase your monthly savings rate even by small amounts (compounding means earlier savings are worth more); pool savings with a partner or buying partner to combine KiwiSaver balances and grants; consider a new build to access the higher First Home Grant and potentially a lower deposit requirement; look at the Kainga Ora First Home Loan scheme which allows eligible buyers to purchase with as little as 5% deposit; and consider targeting a lower-priced suburb or property type to shorten your timeline rather than waiting for a high-value property. A $100 extra per month on a 5-year savings plan shortens your timeline by more than you might expect because of interest compounding.
If you've found a bug, or would like to contact us please click here.
Calculate.co.nz is partnered with Interest.co.nz for New Zealand's highest quality calculators and financial analysis.
All calculators and tools are provided for educational and indicative purposes only and do not constitute financial advice.
Calculate.co.nz is proudly part of the Realtor.co.nz group, New Zealand's leading property transaction literacy platform, helping Kiwis understand the home buying and selling process from start to finish. Whether you're a first home buyer navigating your first property purchase, an investor evaluating your next acquisition, or a homeowner planning to sell, Realtor.co.nz provides clear, independent, and trustworthy guidance on every step of the New Zealand property transaction journey.
Calculate.co.nz is also partnered with Health Based Building and Premium Homes to promote informed choices that lead to better long-term outcomes for Kiwi households.
All content on this website, including calculators, tools, source code, and design, is protected under the Copyright Act 1994 (New Zealand). No part of this site may be reproduced, copied, distributed, stored, or used in any form without prior written permission from the owner.