This calculator compares retiring now against working a few more years in New Zealand, showing how that decision changes the size of your nest egg and how long it will last. Working longer is one of the most powerful levers in retirement planning because it pulls three at once. Every extra year you keep earning, you can add more to your savings, your existing balance keeps compounding, and you trim a year off the drawdown you need to fund, so the money does not have to stretch as far. The combined effect is often far larger than the extra working time would suggest, turning a savings pot that runs short into one that comfortably lasts. You enter your current savings, how much you would contribute each year while still working, the return you expect, the number of extra years you are weighing up, and your annual spending in retirement, and the calculator shows the pot you would retire on each way and roughly how many years it would last at your spending level. For a clearer picture, use an after-inflation return and today's spending so everything is in current dollars, and remember NZ Superannuation sits on top of this from 65, easing the load on your own savings.
Drawdown applies your return each year then your spending. Use an after-inflation return and today's spending. Excludes NZ Super. Estimate only, not advice.
For retiring now, the pot is your current savings. For working longer, it grows your savings by the return for the extra years and adds each year's contribution. The calculator then runs a drawdown on each pot, applying the return then subtracting spending each year, to estimate how many years the money lasts.
With 400,000 dollars now, the pot might fund about 13 years at 40,000 dollars a year. Working 5 more years at 20,000 dollars of contributions and 3 percent growth could lift the pot to around 570,000 dollars and fund several years more again, beyond the 5 years you worked.
If you've found a bug, or would like to contact us, or learn more about James Graham and Calculate.co.nz.
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.
Calculate.co.nz is hosted in Auckland via SiteHost new Zealand.
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.
© 2019 to 2026 Calculate.co.nz. All rights reserved.