Building a Guaranteed Income Floor in Retirement (NZ, 2026): NZ Super, Term Deposits and Beyond

How to build a retirement income floor in NZ: use NZ Super, a term-deposit ladder and managed income to cover your essentials, and keep KiwiSaver for growth. A plain adviser guide.

The worry behind most retirement questions is simple: will the bills always be paid? An income floor is the part of a retirement plan that answers it. The idea is to cover your essential spending with income you can count on, so that when markets wobble, only the discretionary extras are affected. In New Zealand the floor starts with NZ Super and is topped up from there.

TL;DR: An income floor uses reliable income to cover your essentials, so market swings only touch the extras. NZ Super is the foundation: a single person living alone receives about $1,110.30 a fortnight (around $28,868 a year) after tax from 1 April 2026 ¹. A term-deposit ladder and managed income can fill the gap to your essentials, while KiwiSaver stays invested for growth.

What is an income floor and why build one?

An income floor is the layer of your retirement income that covers your essential, non-negotiable spending using money you can rely on. Rates, power, food, insurance and basic transport sit below the line. Holidays, meals out, a newer car and gifts sit above it.

The point of separating the two is behavioural as much as financial. If your essentials are covered by income that does not depend on the share market, a 20% fall in markets is uncomfortable but not frightening, because it only affects the spending you could pause anyway. You are far less likely to panic-sell investments at the bottom when the groceries are already paid for from somewhere safe.

The trade-off is that the most reliable income sources, NZ Super and term deposits, tend to grow slowly. Lean too heavily on them and inflation can quietly erode what your money buys over a 25 to 30 year retirement. So a floor is not meant to cover everything. It covers the essentials, and a growth layer above it does the long-term heavy lifting. Getting that balance right is the real task, and it depends on your own spending, income and comfort with risk.

How do you separate essential from discretionary spending?

Before you can size a floor, you need to know what it has to cover. The honest way to do this is to look at where your money actually goes, not a tidy budget you wish you had.

A simple sort is to split spending into two lists:

• Essentials: housing costs (rates, insurance, maintenance, or rent), power and water, food, basic transport, medical and prescription costs, phone and internet. These are the costs that keep showing up whether or not markets are calm.
• Discretionary: travel, hobbies, dining out, gifts, a vehicle upgrade, home improvements. These are the things you could trim for a year without real hardship.

The Retirement Commission's expenditure guidelines give a useful reference point. For a single person in a metropolitan area, a "No Frills" (essentials-only) budget is estimated at about $705.34 a week, while a more comfortable "Choices" budget is around $790.62 a week ³⁴. These are averages, not targets, and your own number could sit well either side of them depending on whether you own your home mortgage-free, where you live and your health. They are a sense-check, not a prescription.

The line between essential and discretionary is personal. The exercise is worth doing carefully, because everything that follows is built on the essentials figure.

Why is NZ Super the foundation of your floor?

NZ Super is the natural base of any income floor in New Zealand. It is paid from age 65 to almost everyone who meets the residency rules, it arrives every fortnight regardless of what markets do, and it is adjusted each year to keep pace with wages and prices. The Retirement Commission has described it as the country's de-facto guaranteed lifetime income.

The amount depends on your living situation. From 1 April 2026, the after-tax rates (tax code M) are:

NZ Super rates change every 1 April, and tax code and other income can affect what lands in your account. Because it is inflation-adjusted, NZ Super is the part of your floor you do not have to manage. Everything else in this article is about filling the gap between NZ Super and your essentials. Our guide to NZ Super rates and eligibility covers the qualifying rules in more detail.

How big is the gap between Super and your essentials?

Once you know your essentials and your NZ Super rate, the gap is just subtraction. For many people it is smaller than they fear, but it is rarely zero.

Take a single person living alone on a "No Frills" metro budget. Their essentials run to about $705.34 a week ³. NZ Super pays roughly $538.42 a week after tax for that person (the $1,110.30 fortnightly rate spread weekly) ¹. The gap is therefore around $167 a week ⁵, or close to $8,700 a year, that needs to come from somewhere reliable.

For a couple the maths works the same way but the numbers are larger if you want a more comfortable lifestyle. A two-person metro household on a "Choices" budget is estimated to spend about $1,780.32 a week ⁶. Combined NZ Super of about $854.08 each per fortnight covers a meaningful share, leaving a sizeable top-up for the couple to fund themselves.

The size of your gap drives everything else. A small gap might be filled entirely with a term-deposit ladder. A larger one usually calls for a blend of term deposits, managed income and a drawdown from KiwiSaver. The wider the gap, the more it matters to keep some money in growth assets so the floor can keep pace with rising costs. Our guide to the retirement income gap in NZ works through this calculation step by step.

How do you fill the gap with a term-deposit ladder?

For the near-term part of the gap, a term-deposit ladder is a common, low-fuss tool. The idea is to split your money across several term deposits that mature at staggered intervals, rather than locking it all into one.

A simple ladder might look like this: divide the money into five equal parts and place them in one-, two-, three-, four- and five-year term deposits. Each year one matures. You either spend it or reinvest it into a new five-year term at the back of the ladder. The effect is that some of your money matures every year, so you are not locked in, and you are not trying to guess interest-rate movements by betting everything on a single term.

Term deposits suit the floor because the interest for each term is known when you lock it in, and your capital is returned in full at maturity. The trade-offs are real, though. Rates move with the Reserve Bank's Official Cash Rate, which sits at 2.25% as at this review ⁷, so the rate you reinvest at in future is unknown and may be lower. Returns from term deposits also tend to track close to inflation rather than beating it, so a ladder is well suited to near-term, essential spending, but it is not a growth engine. Interest is taxable, which further reduces the real return.

Where do managed-income products fit on top of the floor?

If NZ Super plus a term-deposit ladder still leaves a gap, or if you would rather not manage a ladder yourself, a managed-income product can sit on top of the floor for part of the job.

The best-known NZ example is the Lifetime Retirement Income Fund, a managed fund designed to pay a regular income intended to last for life. It is not a traditional annuity. Your money stays invested in a managed fund, so the underlying returns and your remaining capital can still rise and fall, but the income payments are structured to continue for life. That longevity protection comes at a higher fee than a plain index fund, which is the trade-off. We cover how these work, and how they differ from a true annuity, in our guide to annuities and guaranteed income in NZ.

A managed-income layer can make sense for people who want more certainty than a term-deposit ladder offers and would rather not manage withdrawals themselves. It is less suitable for those who want the lowest possible fees, full flexibility, or to leave the largest possible inheritance. Returns are not guaranteed. The value of investments can go down as well as up and you may get back less than you invested. Past performance is not a reliable indicator of future performance. Whether a product like this belongs in your floor depends on your other income, your health and how much you value certainty over flexibility.

How do you keep growth money for the 'fun' and for inflation?

A floor covers essentials. The money above the floor does two jobs: it funds the enjoyable, discretionary side of retirement, and it protects your buying power as prices rise over a long retirement.

For most New Zealanders this growth layer is largely their KiwiSaver, often left in a balanced or growth fund after age 65. The logic is the same as during your working years. With a long time horizon, short-term ups and downs matter less than long-term growth. The difference in retirement is that your floor is already covering essentials, so you are not forced to sell growth assets at a bad time to pay the power bill. KiwiSaver also benefits from the government contribution while you are still contributing before retirement, worth up to $260.72 a year if you qualify ⁸.

Keeping a growth layer is not optional comfort; it is inflation defence. NZ Super adjusts each year, but a term-deposit ladder and a fixed managed income may slowly buy less over 25 to 30 years. Some money in growth assets gives the overall plan a chance to keep pace. The cost is volatility: this part of your money can fall sharply in value, which is exactly why it sits above the floor and funds the spending you could pause, not the spending you cannot.

KiwiSaver is a long-term savings scheme. Government contributions, contribution rates, withdrawal rules and tax (PIR) settings are set by the Government and can change. Figures are correct as at 26 May 2026. Check current rules at ird.govt.nz, kiwisaver.govt.nz and sorted.org.nz, and the relevant scheme's Product Disclosure Statement. Our guide to the bucket strategy for retirement income shows one way to organise the floor and growth layers together.

How do you review your floor as costs rise?

A floor built once and never revisited will slowly fall behind. Essentials rise with inflation, NZ Super rates change each April, term deposits mature and reinvest at new rates, and your own spending shifts as you age. A review keeps the floor doing its job.

A few practical things to check, at least once a year:

• Has the gap changed? Re-add your essentials and compare them with current NZ Super rates ¹². If essentials have risen faster than Super, the top-up your savings must provide has grown.
• Are reinvested term deposits keeping up? When a rung of the ladder matures, check the new rate against inflation, not just against the old rate.
• Is the growth layer still doing its job? Over time, growth assets are what give the plan a chance to keep pace with rising costs. Check your PIR (Prescribed Investor Rate, the tax rate on your KiwiSaver and PIE earnings) is correct, as many retirees move to a lower band.
• Have your circumstances changed? A health event, a move, or the loss of a partner can change both your essentials and your NZ Super rate.

None of this requires constant tinkering. The aim is a floor that stays a little ahead of your essentials, with a growth layer above it carrying the long-term load. Reviewing it deliberately, with figures that reflect your own situation, is what keeps the plan honest.

Frequently asked questions

What is a guaranteed income floor in retirement? It is the layer of your retirement income that covers your essential spending using income you can rely on, so market movements only affect discretionary extras. In New Zealand the floor starts with NZ Super, which pays about $1,110.30 a fortnight after tax for a single person living alone from 1 April 2026 ¹, and is topped up with tools like a term-deposit ladder and managed income.

How much of my retirement should the floor cover? Generally just your essentials, not your whole budget. The Retirement Commission's guidelines estimate a single metro retiree spends about $705.34 a week on a "No Frills" budget ³. The floor aims to cover that reliably, while a growth layer above it funds discretionary spending and helps the plan keep pace with inflation. Your own essentials figure will differ.

Is a term-deposit ladder better than one big term deposit? Neither is simply better, but a ladder spreads your money across several maturity dates and interest rates rather than locking it all in at once. That gives you regular access as each rung matures and avoids betting everything on one rate. The trade-off is slightly more to manage. Term-deposit rates move with the Official Cash Rate, which is 2.25% as at this review ⁷, so future reinvestment rates are unknown.

Should I keep my KiwiSaver in growth during retirement? That depends on your circumstances, and this is general information rather than advice. The reasoning many people follow is that, with essentials covered by the floor, money above it can stay in growth assets to keep pace with inflation over a 25 to 30 year retirement. The cost is that this money can fall sharply in value, so it suits spending you could pause rather than your essentials.

Can I just buy an annuity to guarantee my income? Traditional lifetime annuities are not generally sold in New Zealand. The closest option is a managed-income product such as the Lifetime Retirement Income Fund, where your money stays invested but the income is designed to last for life. NZ Super itself acts as a guaranteed, inflation-adjusted income for life. Our guide to annuities in NZ explains the options.

How often should I review my income floor? At least once a year is sensible, plus after any big change in your spending, health or living situation. NZ Super rates change each 1 April, term deposits mature and reinvest at new rates, and essentials rise with inflation, so the gap your savings must fill can shift. A regular review keeps the floor a little ahead of your essentials.

This article is general information only and is not personalised financial advice. It does not take into account your particular financial situation, goals or needs. Before acting, consider whether it's right for you and seek advice tailored to your circumstances. Craig Smith Business Services Ltd (FSP712931), trading as Smiths Financial, holds a Class 2 licence issued by the Financial Markets Authority and is a member of the Financial Dispute Resolution Service (FDRS). Written by Henry Smith, Financial Adviser; reviewed by Craig Smith, Principal Adviser. Last reviewed 26 May 2026.