Have You Left It Too Late to Start Investing?

Plenty of capable, well-paid New Zealanders reach their late forties or fifties with a KiwiSaver balance and very little else invested. The reasons are usually good ones. A mortgage took priority for two decades, a health event, a focus on children, a business absorbed every spare dollar, a separation reset the clock, or perhaps something else. Whatever the path, the question that brings people to this page is the same: have I left it too late to invest for retirement, and is there enough time for it to make a difference?

You have started later than ideal, and there is still enough time for investing to change how you retire. Take someone who turns 50 and starts putting $300 a week into a diversified growth portfolio. At a 6 percent annual return, before fees, tax and inflation, that builds to roughly $378,000 by 65. The return is an illustration rather than a forecast. Most of that $378,000 is money the investor put in, which is the shape of every late start: contributions do the heavy lifting and compounding assists.

If $300 a week is out of reach, the approach is the same: start with what is sustainable now, note when the mortgage or family costs fall away, and lift contributions on those dates. Many people reach their highest-earning years in their late forties and fifties. The average KiwiSaver balance for the same ages was $55,010 for members aged 46 to 50 and $65,873 for those aged 51 to 55, with wide variation around both figures. The useful comparison is with your own needs rather than the age-group average: whether your balance and the contributions you can make from here will fund the retirement you want.

Figure out your retirement income gap

The answer comes from how much you want to spend each week in retirement, how much of it NZ Super will cover, and the gap your own investments must fund. A round number like $1 million tells you nothing about any of those three.

From 1 April 2026, NZ Super pays $555.15 a week after tax at the M code to a single person living alone, or $854.08 combined to a couple who both qualify. Net payments are lower where a secondary tax code applies, as they often do for someone still working. For anyone who qualifies, it is paid from 65, adjusted every April and paid in full whether or not you are still earning, although your tax code may change. That is an indexed floor no private portfolio has to replicate.

What retirees spend above that floor is measured each year by Massey University's Retirement Expenditure Guidelines, which report what selected groups of retired households spend rather than what anyone should spend. On the 2025 guidelines, measured against the Super rates in force at the time, a couple in Auckland, Wellington or Christchurch spent about $109 a week more than Super on Massey's "No Frills" budget. That budget covers basic needs with little left over. The same couple on Massey's "Choices" budget, which allows for some travel, eating out and gifts, spent about $952 a week more. Your own figure depends on housing, location, health, travel, dependants and what you intend to leave behind, and determining it properly turns a vague worry into a target you can act on.

First stop: your KiwiSaver settings

If you are employed, the quickest gains sit inside your KiwiSaver account and take minutes to adjust. The default employee rate and the compulsory employer minimum are both 3.5 percent of gross pay, rising to 4 percent on 1 April 2028. You can choose 4, 6, 8 or 10 percent for your own contribution instead. On a peak income the higher rates are the simplest way to lift your contributions, because the money leaves your pay before you can spend it. Raising your own rate does not oblige your employer to match it; the employer minimum stays at 3.5 percent unless your employment agreement provides more. If 3.5 percent becomes unaffordable for a period, you can apply to reduce to 3 percent for three to 12 months rather than stopping altogether.

Employer contributions are taxed before they reach your account, and some total-remuneration packages treat them differently again, so the employer's 3.5 percent lands as somewhat less.

The government contribution of up to $260.72 a year is worth collecting if your taxable income is under $180,000, though it is small beside your own and your employer's contributions.

If you are self-employed or run a business, there is no employer contribution to lean on and your KiwiSaver contributions are set by arrangement with your provider. The equivalent move is to treat retirement saving as a fixed overhead of the business, transferred monthly, rather than funded from whatever is left at year end. Either way, keep an emergency reserve separate from money invested for retirement, so a setback never forces you to sell at a bad time.

Then check which fund your KiwiSaver savings sit in. KiwiSaver funds are labelled by how much of the money is in shares and property, as against cash and bonds. Shares and property tend to grow more over long periods but swing in value; cash and bonds are steadier but grow slowly. A conservative fund holds mostly cash and bonds and suits money that will be spent within a few years or an investor who could not tolerate a large fall. A growth fund holds a high proportion of shares, though the proportion varies between providers, and suits money that will stay invested for a decade or more. Plenty of pre-retirees have sat in conservative funds for years with money they will not touch until their seventies. Three questions settle whether a growth fund is the better fit. When will each portion of the money be withdrawn? Could other resources absorb a market fall in the meantime? And would you stay invested through a decline of 30 to 50 percent rather than switching at the bottom? Where the answers point to growth, compare funds on areas like investment approach, fees and their exact holdings. Two funds labelled "growth" can carry different share weightings, costs and approaches to hedging the currency risk on overseas shares.

Mortgage first, or invest alongside it?

Whether to repay the mortgage faster or invest alongside it is a decision in its own right, and for many late starters it involves the largest sum they control. The repay-or-invest trade-off works like this. Every dollar of extra repayment earns a certain, tax-free return equal to the interest rate on your own loan. Use the rate your loan is likely to reset to at the next refix, rather than an advertised market average. Every dollar invested in a diversified growth portfolio instead must earn more than that rate after fees and tax to come out ahead. Over 15 years it is expected to, along a path that will vary.

The choice is rarely all or nothing. Where the mortgage will be repaid within a few years regardless, the stronger approach is often to keep repaying at the current pace and commit the repayments to investment the month the loan ends. The household never adjusts to the extra income. Where the mortgage still has 15 years to run at age 50, carrying some of it into the sixties while investing alongside it can be reasonable. The condition is that the repayments would still be affordable if your income fell, for example after a move to part-time work.

The levers that get stronger in your fifties

Several of the most useful levers in retirement saving reach full strength in the fifties and early sixties, and most of them sit in your hands. Vinessa Orsbourn, financial adviser at Become Wealth, sees the pattern often: "People in their fifties often tell me they feel behind. However, once the children have left home, the mortgage is repaid, and they are earning more than ever before, retirement savings can accumulate surprisingly quickly. When a family home is eventually downsized, the financial boost can be even more significant." The levers:

• Peak earnings: directing the surplus of your highest-earning years into investments rather than a larger lifestyle, with each pay rise, bonus or redundancy payment treated as a contribution before it becomes spending
• A longer working life: each extra year adds a year of saving, removes a year of drawdown and shortens the period the portfolio funds alone, while NZ Super keeps arriving from 65 for anyone who qualifies
• A phased exit: part-time or consulting work between 65 and 70 reduces the early withdrawals a portfolio feels most
• Housing equity: downsizing can release more capital in one decision than a decade of contributions, though selling and buying costs can absorb a share of it, and it works best when you want to move anyway
• Family support: add up any continuing support for adult children, including housing, regular transfers and any help with a deposit you intend to give, decide what is affordable alongside your own retirement, and put major help on a defined footing such as a documented loan or a structured deposit. The sums are often larger than they feel: a third of New Zealand families with children had an adult child living at home the last time data was compiled, and parents helping with a first home contributed about $108,000 on average
• Insurance: with the mortgage shrinking and dependants leaving, some cover can be trimmed and the premiums redirected. Review income protection carefully before reducing it, because the ability to rebuild after lost earnings shrinks as retirement approaches, and whether it is worth keeping depends on the policy terms, the premium and the assets you already hold
• Spending design: retirement spending is rarely flat, and allowing for higher spending early with a gentler glide later changes how much you need across the full retirement duration

You may also receive an inheritance at some point. If one comes, it can strengthen your position, but its timing and size are outside your control, so build the retirement you want without it.

Keep long-term money invested for growth

Stopping paid work ends a salary, while an investment horizon runs from the day you invest to the day you spend any given invested dollar. Stats NZ's life tables give a 65-year-old today around two more decades on average, and one member of a couple will often live well past the average. Money you invest at 50 may be spent at 80.

So the money you will draw in the first few years of retirement belongs in cash and good-quality bonds, where its value is steady. Money needed later can take progressively more share-market risk according to when it will be spent. A common guide for the near-term portion is two to five years of the spending your investments must fund on top of NZ Super. That is a far smaller sum than two to five years of total household spending. A household whose essentials are largely covered by Super may be able to hold a smaller near-term portion, while one relying heavily on its investments for everyday spending may need more. The point of holding it is to avoid selling shares after a market fall to pay for groceries, so the shares are left alone to recover. A blanket move to conservative funds at 60 can be especially costly for a late starter, because most of that money will stay invested for decades and loses its chance to grow.

Cash is the right home for that near-term portion and a poor home for the rest. At a 4 percent deposit rate, the return after 33 percent tax is about 2.68 percent. If inflation over the same period were 3.7 percent, as it was for the year to September 2026, purchasing power would decline. At the other end, trying to compress 30 missing years into five years of concentrated bets is the error with the least room for repair. A position that fails at 55 has few earning years left to recover, which is why the line between trading and investing matters most at this age. The answer for a late starter is a diversified portfolio, added to as the money becomes available rather than held back for a better moment. The long-run evidence on investing at all-time highs favours being in the market over waiting. For most people beginning with limited investments, contribution rate and the split between shares and steadier assets have a larger immediate effect than tax structure. Tax, including whether a PIE structured fund suits you, becomes more consequential as the portfolio grows.

Start this month

A late start comes good when the moves are made promptly: higher contributions to investments, clear thinking about spending, and sometimes a few more working years than you first pictured. In return you get a set of numbers which might ease any worry, and a sequence of decisions each within your control. Deciding your contribution rate and your fund choice are matters which can be settled this week.

Gather the weekly spending you want in retirement, the NZ Super you expect, your KiwiSaver balance, your mortgage balance and the monthly surplus you can sustain. With those in front of you, most of your own answer is already visible. A complimentary initial retirement planning conversation with a Become Wealth adviser can establish whether your gap is material and which levers are realistic for you. It can also settle whether personalised advice would be worth its cost. That advice covers the capital you need at 65, a sustainable contribution rate, your investment mix, the mortgage-versus-investing split and your retirement date, and tests how all of it holds up if returns are weaker or an income stops earlier than expected.