The Bucket Strategy for Retirement in NZ (2026): Cash, Income and Growth Buckets Explained

How to split your KiwiSaver, savings and term deposits into cash, income and growth buckets so a market drop never forces you to sell at the wrong time. A plain NZ adviser guide.

Once you stop earning a wage, your KiwiSaver and savings have to pay you a regular income, often for 25 to 30 years. The hard part is not the maths. It is sitting tight through a market drop without selling investments at a loss to cover the groceries. The bucket strategy is a simple way to organise your money so that day-to-day spending and long-term growth do not fight each other.

TL;DR: The bucket strategy splits your retirement savings into three pots by time horizon: a cash bucket (1–2 years of spending, held in cash and term deposits), an income/middle bucket (roughly 3–10 years, in balanced funds), and a growth bucket (10+ years, in growth funds and KiwiSaver). NZ Super provides a guaranteed income base of about $27,998 a year after tax for a single person ¹, and the buckets top it up.

What is the bucket strategy and why do retirees use it?

The bucket strategy is a way of dividing your retirement savings into separate pots, each matched to when you will spend the money. The closer the spending, the safer and more accessible the money; the further away, the more it can be invested for growth.

The problem it solves is timing. If all your money sits in a single growth fund and markets fall 20% in your first year of retirement, every dollar you withdraw to live on is a dollar sold at a loss, and it is no longer there to recover when markets rebound. This is sequencing-of-returns risk: a poor run of returns early in retirement does far more damage than the same run later on. The bucket approach gives you a cash reserve to spend from during a downturn, so your growth investments have time to recover before you touch them.

Many people find the real benefit is behavioural. Knowing the next year or two of spending is already set aside in cash makes it far easier to leave the rest invested when headlines turn grim. That, more than any clever rebalancing rule, is what keeps people from panic-selling.

The trade-off is that holding cash has a cost. Money parked in a term deposit usually grows more slowly than money in a growth fund over the long run, so holding too large a cash bucket can quietly hold back your overall returns. The skill is in sizing each bucket sensibly, not in maximising any single one.

How many buckets do you actually need in NZ?

The classic model uses three buckets, split by time horizon. You can run two, or four, but three is a sensible default for most New Zealanders because it maps neatly onto the products we actually have here: bank term deposits, balanced funds and growth funds, including KiwiSaver.

Figure (described): a tiered diagram of three stacked buckets. Bucket 1 (Cash, 1–2 years, cash and term deposits) sits at the top for easy access; Bucket 2 (Income/middle, 3–10 years, balanced and income assets) in the middle; Bucket 3 (Growth, 10+ years, growth funds and KiwiSaver) at the base doing the long-term heavy lifting. Each bucket shows its purpose, asset type and typical size. Framework mapped to Sorted fund profiles ¹⁰.

The number of buckets matters less than the principle behind them: never hold money you need soon in something that can fall sharply in value, and never hold money you will not touch for 15 years somewhere it cannot grow.

What goes in the cash bucket and how big should it be?

The cash bucket is the money you will spend in the next year or two. Its job is not to grow; its job to be there, in full, whatever markets are doing. That means bank savings accounts, on-call accounts and short term deposits, not funds.

To size it, start with the gap you have to fund yourself. NZ Super is your guaranteed, inflation-indexed base. For a single person living alone it pays about $538.42 a week, roughly $27,998 a year after tax ¹. A couple where both qualify receive about $828.34 a week combined ². The cash bucket only needs to cover spending above what NZ Super already pays.

A worked example: suppose a single retiree wants a metro "choices" lifestyle costing about $790.62 a week ⁶. NZ Super covers $538.42 of that ¹, leaving a self-funded gap of roughly $252 a week, or about $13,100 a year. A one- to two-year cash bucket for that person is therefore in the region of $13,000 to $26,000, not their whole nest egg.

How many years to hold is a judgement call. One year is leaner and keeps more money working; two years gives more comfort through a longer downturn. Holding much more than two years' spending in cash is usually a drag, because that money could be earning more in the income or growth buckets. The right size depends on your spending, your other income and how much market movement you can stomach.

What sits in the income/middle bucket?

The middle bucket is the shock absorber. Its job is to refill the cash bucket as you spend it down, while taking less risk than a pure growth fund. It typically holds money you expect to spend in roughly years three to ten of retirement.

In New Zealand this bucket often maps to a balanced fund. A typical balanced KiwiSaver or managed fund holds around 50–60% in growth assets (shares and property), with the rest in income assets such as bonds and cash ¹⁰. That mix aims for steadier returns than a growth fund, with smaller falls when markets drop, at the cost of lower expected long-run growth. Some people also use longer-dated term deposits or bond funds here.

You can compare the growth-asset allocation and risk profile of specific funds on Sorted's Smart Investor ¹⁰, which lets you see how a fund described as "balanced" actually splits between growth and income assets, since the label alone does not tell you everything.

The income bucket is the link between safety and growth. When markets are calm, it tops up the cash bucket. When markets fall, you can leave it alone and spend from cash instead, giving both the middle and growth buckets room to recover. Returns here are not guaranteed and the value can still fall, which is exactly why this money is not spending money for the next year or two.

How does the growth bucket keep you ahead of inflation?

Over a 25 to 30 year retirement, the quiet risk is not a single market crash; it is inflation slowly eroding what your money buys. The growth bucket exists to outpace it. It holds money you do not expect to touch for at least a decade, invested for higher long-run returns, accepting that its value will rise and fall sharply along the way.

For most New Zealanders the growth bucket is largely their KiwiSaver, often left in a growth fund. The logic is the same as during your working years: with a long time horizon, short-term volatility matters less than long-term growth. The difference in retirement is that you now have the cash and income buckets shielding you, so you are not forced to sell growth assets at a bad time.

How much belongs here depends on the size of your gap above NZ Super. A more comfortable lifestyle needs a bigger growth engine. For a couple wanting a metro "choices" lifestyle costing about $1,780.32 a week ⁷, the top-up needed above NZ Super is roughly $952 a week, which the 2025 guidelines estimate requires a lump sum a little over $1 million saved over about 25 years ⁸. That scale of saving is only realistic if a meaningful share stays in growth assets for decades rather than sitting in cash.

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. The growth bucket is where you accept that volatility in exchange for a fighting chance against inflation over a long retirement.

How do you refill the buckets each year without panic-selling?

A bucket structure is not "set and forget". Once a year, or after a big market move, you decide whether to top the cash bucket back up, and from where.

A simple, common approach works like this:

• In a normal or strong year, sell a slice of the growth bucket (which has done well) to refill the income bucket, and move income-bucket money up into cash. You are taking profit from the bucket that grew.
• In a poor year, leave the growth bucket alone. Refill cash from the income bucket, or simply spend down the cash you have, and give growth time to recover before you sell anything.

The point is to avoid selling growth assets when they are down. Because your cash bucket already holds one to two years of spending, you can comfortably skip a refill from growth in a bad year and wait for a better one.

A few practical guardrails:

• Decide your refill rules in advance, while markets are calm, so you are not making big decisions under stress.
• Keep an eye on how fast you are drawing down. Pairing buckets with a sustainable withdrawal rate stops the structure from masking the fact that you are spending too quickly.
• Review at least annually, and adjust if your spending, health or goals change.

This is where the bucket idea connects to the wider question of how much you can safely spend. Our guides on the safe withdrawal rate in NZ and sequencing-of-returns risk go deeper on both.

How does the bucket strategy map onto KiwiSaver and NZ Super?

For most New Zealanders, the three buckets are not separate accounts so much as a way of organising what you already have. NZ Super sits underneath the whole structure as a guaranteed, inflation-indexed income floor of about $27,998 a year after tax for a single person ¹. The buckets only have to fund the gap above it.

Here is a rough mapping:

KiwiSaver itself can straddle the income and growth buckets. After 65 you can withdraw from KiwiSaver, leave it invested, or set up a regular drawdown, and you can hold different parts of it in different fund types. One practical move is to keep the bulk of KiwiSaver in a growth or balanced fund while drawing a regular amount into your cash bucket. Our guide to KiwiSaver decumulation and drawdown covers the mechanics.

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 22 December 2025. Check current rules at ird.govt.nz, kiwisaver.govt.nz and sorted.org.nz, and the relevant scheme's Product Disclosure Statement.

What are the common mistakes with buckets in NZ?

The bucket strategy is simple, which is its strength, but a few things commonly trip people up:

• A cash bucket that is too big. Holding five or ten years of spending in cash "to be safe" feels prudent but can badly lag inflation over a long retirement. Holding too little, on the other hand, can force a sale at the wrong time. Sizing it to one to two years of your self-funded gap is the balance most advisers aim for.
• Forgetting NZ Super in the maths. The buckets only fund the gap above NZ Super, not your entire spending. Sizing them off total spending overstates how much cash you need to hold.
• Treating the income or growth buckets as guaranteed. Balanced and growth funds can fall in value. They belong to money you will not need for years precisely because of that.
• Never refilling, or refilling at the worst time. Selling growth assets in a downturn to top up cash defeats the purpose. The structure only works if you protect the growth bucket through bad years.
• Ignoring tax and fees. Your PIR (Prescribed Investor Rate, the tax rate on your KiwiSaver and PIE earnings) and fund fees both affect what you actually keep. Many retirees move into a lower PIR band and should check they are on the right one.
• Mixing up investments and a savings account. KiwiSaver and managed funds are investments whose value can fall; they are not the same as money in the bank. The cash bucket is the only part designed to hold its value day to day.

None of these are reasons to avoid the strategy. They are reasons to set it up deliberately, with figures that reflect your own spending, other income and comfort with risk.

Frequently asked questions

How many buckets do I need for retirement in NZ? Three is a sensible default: a cash bucket for the next one to two years of spending, an income/middle bucket for roughly years three to ten, and a growth bucket for money you will not touch for a decade or more. Some people use two or four buckets, but three maps neatly onto term deposits, balanced funds and growth funds, including KiwiSaver. The right structure depends on your circumstances.

How big should my cash bucket be? Most approaches hold one to two years of the spending you fund yourself, above NZ Super, in cash and short term deposits. For a single person wanting a metro "choices" lifestyle, that self-funded gap is around $252 a week, or about $13,100 a year ¹⁶, so the cash bucket might be roughly $13,000 to $26,000. Holding much more than two years tends to drag on returns; holding much less can force a sale at a bad time.

Does the bucket strategy work with KiwiSaver? Yes. After 65 you can leave KiwiSaver invested, withdraw lump sums, or set up a regular drawdown, and hold different parts in different fund types. Many people keep the bulk of KiwiSaver in a growth or balanced fund as part of their income and growth buckets, while drawing a regular amount into cash. KiwiSaver withdrawal rules and tax settings are set by the Government and can change ¹⁰.

Will the bucket strategy stop me running out of money? No strategy can guarantee that. Buckets help you avoid selling growth assets at a loss during a downturn, which protects against sequencing-of-returns risk, but how long your money lasts also depends on how much you spend each year. Pairing buckets with a sustainable withdrawal rate is what keeps the plan on track. Returns are not guaranteed and can go down as well as up.

How much do I need above NZ Super for a comfortable retirement? The 2025 Retirement Expenditure Guidelines estimate that a couple wanting a metro "choices" lifestyle of about $1,780.32 a week needs to top up NZ Super by roughly $952 a week, which works out to a lump sum a little over $1 million over about 25 years ⁷⁸. A more modest lifestyle needs far less. These are illustrations based on stated assumptions, not predictions, and your own figure will differ.

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 22 December 2025.