FIRE Calculator NZ

Why New Zealand is unusually good for FIRE

Most FIRE number calculators are written for Americans, and the American assumption is that the state gives you nothing you can count on. New Zealand is close to the opposite case. NZ Super is paid to everyone who meets the age and residence criteria, and it is not tested against your income or your assets, so you can hold a seven-figure portfolio and still receive it in full. That single fact makes a New Zealand FIRE number materially smaller than the same lifestyle would require in the United States.

The catch sits on the other side of the ledger. KiwiSaver, the account most New Zealanders actually save in, is locked until 65. So while your long-run target is lower, the years before 65 are harder to fund, and the shape of your plan matters more than the total. A New Zealand FIRE plan is really two plans: a bridge that has to live outside KiwiSaver, and a much smaller permanent portfolio topped up by NZ Super.

How the maths works

FIRE number = bridge years of full spending (discounted) + post-Super pot for (spending − NZ Super) ÷ withdrawal rate

The calculator splits retirement into two phases. From the day you stop working until NZ Super begins, your portfolio pays for everything, so those years are priced at your full spending and discounted back at your real return. From 65 onwards the portfolio only funds the gap above NZ Super, so that phase is priced at your spending minus the payment and capitalised at your withdrawal rate. Untick the NZ Super box to see the difference, which is usually startling.

NZ Super: the number most people leave out

You may qualify for NZ Super if you are 65 or older, you are a New Zealand citizen, permanent resident or hold a residence class visa, you are ordinarily resident here when you apply, and you have lived in New Zealand for a required number of years from age 20 including five years from age 50. That residence requirement has been rising: for anyone born on or after 1 July 1977, which is most people planning FIRE today, it is 20 years.

What makes it powerful is what is missing from that list. There is no income test and no asset test. You can keep working while you receive it, and having a large portfolio does not reduce it. The only thing your other income changes is your tax code, which changes the after-tax amount.

From 1 April 2026 the single living alone rate is NZ$1,110.30 a fortnight after tax on the M code, or NZ$1,294.74 before tax. Across 26 fortnightly payments that is roughly NZ$28,868 a year net, which is what the calculator uses by default. If you live with another adult the rate is lower, at NZ$1,024.90 a fortnight after tax on M, and if you have a partner who also qualifies you each receive NZ$854.08. Rates are reviewed every 1 April against average wage growth, so check the current figure before you commit to a plan.

KiwiSaver, and why the bridge sits outside it

KiwiSaver is a good accumulation vehicle and a poor early-retirement vehicle. From 1 April 2026 the default employee contribution rate and the matching employer rate both rose from 3% to 3.5% of before-tax pay, and both are scheduled to rise again to 4% from 1 April 2028. If you want to stay at 3% you can apply to Inland Revenue for a temporary rate reduction lasting between three and twelve months. On top of that, the government contributes 25 cents for each dollar you put in, to a maximum of NZ$260.72 a year, and that contribution is not available if you earn more than NZ$180,000 of taxable income.

The constraint is access. You can withdraw your KiwiSaver savings when you reach the age of eligibility, currently 65. Before that, withdrawals are limited to a first home, permanent emigration to a country other than Australia, serious illness or life-shortening congenital condition, and significant financial hardship. None of those is a retirement plan. So if you intend to stop working at 55 or 60, every dollar of those bridge years has to come from somewhere else.

That "somewhere else" is usually a mix of PIE funds, ordinary managed funds and directly held shares. Two tax points are worth knowing. Multi-rate PIE income is taxed at your prescribed investor rate, and those rates are 10.5%, 17.5% and 28%, capped at 28%, which is below the top personal rate, so a PIE can be efficient for higher earners. And if you hold overseas shares directly, the foreign investment fund rules start to apply once your offshore holdings cost more than NZ$50,000 in total, measured at cost rather than market value. Below that threshold you are outside the FIF regime. Get advice before you build a large offshore portfolio, because the FIF calculation is not intuitive.

A worked example in New Zealand dollars

Take the default settings. You are 35, you want to stop working at 60, and you expect to spend NZ$65,000 a year. Ignore NZ Super entirely and, at a 4% withdrawal rate, your FIRE number is NZ$1.63 million.

Now count NZ Super from 65. The five bridge years from 60 to 65 cost about NZ$289,000 of capital at full spending, discounted. After 65 the portfolio only has to produce NZ$36,132 a year, needing about NZ$903,000 at that point, which is worth roughly NZ$742,000 today. The total is about NZ$1.03 million. NZ Super has removed close to NZ$593,000, more than a third of the target, and the whole of that saving comes from a payment you do not have to qualify for on income grounds.

Shift the stop-work age to 50 and the picture changes character. The bridge stretches to fifteen years and swallows about NZ$723,000 on its own, all of which has to be outside KiwiSaver. That is the real New Zealand constraint: not the size of the number, but where it is allowed to sit. Check the date your own numbers imply with the early retirement calculator, and compare with other countries on the FIRE number by country page.

Risks and honest limitations

This calculator ignores tax on your portfolio, treating every account as equal, which is generous to a KiwiSaver-heavy plan. It assumes a steady real return when markets deliver a sequence, and a poor first decade is the standard way an early retirement unravels. It assumes flat real spending for life, when spending usually falls later. And it assumes you meet the NZ Super residence test, a real risk for anyone who spends years working overseas.

The 4% withdrawal rate deserves particular scepticism here. It comes from American market history over 30-year retirements, and a New Zealand investor stopping at 55 is funding a much longer window from a smaller, more concentrated home market. Drag the slider to 3.5% and watch the target move. Because NZ Super arrives regardless, a conservative withdrawal rate costs a New Zealander less than it costs an American, so it is a cheap margin of safety to buy. For the underlying concepts, read what Coast FIRE means, compare with Coast FIRE in Canada or the UK version, and browse the full guide library.

Frequently asked questions

Sources and further reading

Every New Zealand figure on this page comes from the primary sources below, so you can verify them directly rather than take our word for it.

• Work and Income, Who can get NZ Super (age 65, residence criteria, working while receiving it)
• Work and Income, How much you can get for NZ Super (fortnightly rates from 1 April 2026)
• Inland Revenue, KiwiSaver changes (3.5% from 1 April 2026, 4% from 1 April 2028, government contribution)
• Inland Revenue, Getting my KiwiSaver savings when I retire (age of eligibility, currently 65)
• Inland Revenue, Getting my KiwiSaver savings early (the limited early-withdrawal grounds)
• Inland Revenue, New Zealand resident individuals' PIE income (prescribed investor rates of 10.5%, 17.5% and 28%)
• Inland Revenue, Foreign investment fund rules exemptions (the NZ$50,000 de minimis)