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Where to Put Your Next Dollar: The Order of Investing

💰 Where Your Next Dollar Should Go

When you have a spare dollar, the question is not just whether to save it, but where it should go first. Putting money into shares while a credit card charges you 22% is like bailing water into a boat that still has a hole in it. The good news is that there is a sensible order for a spare dollar in New Zealand, and each step sits where it does for a clear reason. Some steps give you a guaranteed, tax-free return that no share market can promise. Some hand you free money you can get nowhere else. Others simply stop a surprise bill from dragging you back into expensive debt. This guide sets out that order, from covering the essentials and clearing high-interest debt, through capturing the full KiwiSaver contributions on offer, building an emergency fund, and finally investing for the long term. You do not need a big income to follow it. You just need to know which dollar does the most work, and to send your next one there first.

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Key Point: The best first investment is usually not an investment at all. Clearing a high-interest debt and capturing your KiwiSaver match both beat the average share-market return, and they do it with no risk. Get those done, then invest.

The Order at a Glance

Here is the priority order for a spare dollar. Work down the list, and only move to the next step once the one above it is handled. A couple of steps overlap in real life, and we flag those as we go.

Step What to do Why it comes here
1 Cover the essentials and a small starter buffer (about $1,000) Stops a surprise bill forcing you straight back onto a credit card
2 Clear high-interest "bad" debt A guaranteed, tax-free return equal to the interest rate you avoid
3 Capture the full KiwiSaver contributions Employer and government money you can get nowhere else
4 Build an emergency fund (about three months of essentials) Lets you ride out a job loss or big bill without borrowing
5 Save for medium-term goals in the right vehicle Money you need in one to five years should not sit in shares
6 Weigh extra mortgage repayments against investing Paying down the mortgage is a risk-free, tax-free return to compare
7 Invest for the long term in diversified funds Once the sure things are done, time in the market does the work
💡 This is a guide, not a rule book

Everyone's situation is different. Someone with no debt and a full emergency fund can skip straight to investing. Someone drowning in card debt should stay on step 2 for a while. Steps 3 and 4 often run alongside each other, because you keep your KiwiSaver going while you top up your cash buffer. Use the order as a default, then adjust it to your own life.

What Counts as "Bad" Debt

The order treats debt in two buckets. High-interest or "bad" debt is anything charging you a rate you could not reliably beat by investing. In New Zealand that usually means:

  • Credit cards: many standard cards charge around 20% a year, and some purchase rates sit above 25%.
  • Buy Now Pay Later: free if you pay on time, but late fees and rolling balances make it expensive fast.
  • Payday and short-term loans: among the most expensive credit available, sometimes with very high fees on top of interest.
  • Personal and car loans: often 10% to 20% depending on whether the loan is secured.

Low-interest debt is different. A New Zealand student loan is interest-free while you live here, and a home loan is usually one of the cheapest ways to borrow. Those do not need to be cleared before you invest, which is why the mortgage question sits later at step 6.

🎯 Why the Order Works: Guaranteed Returns and Free Money

The order is not about willpower or feeling good. It is about return on each dollar. Two ideas do most of the heavy lifting: paying off high-interest debt is a guaranteed, tax-free return, and capturing your KiwiSaver match is free money. Both beat what a normal investment can promise, so they come first.

Paying Off Debt Is a Guaranteed, Tax-Free Return

When you clear a credit card charging 22%, you no longer pay that 22%. That saved interest is exactly like earning 22% on your money, except it is certain. A share fund might average 7% over the long run, but in any given year it could fall. Clearing the card cannot fall. The return is locked in the moment you make the payment.

There is a second advantage that people often miss: the return from paying off debt is not taxed. If you invest and earn income, that income is usually taxed. A managed fund set up as a portfolio investment entity (PIE) taxes your share of the income at your prescribed investor rate, which is capped at 28%. Interest from a term deposit is taxed at your income tax rate. But money you save by not paying interest is not income, so no tax is taken. That makes debt repayment worth even more than the headline rate suggests.

The maths that settles it: To beat paying off a 22% card by investing instead, a PIE fund taxed at 28% would need to earn about 30.6% before tax just to break even (22% divided by 0.72). No mainstream fund reliably does that. So the card wins every time.

The KiwiSaver Match Is Free Money

KiwiSaver is the only place most New Zealanders can get other people to add to their savings. There are two sources of this free money, and the order tells you to capture both before you invest on your own.

1. The employer contribution

If you are an employee contributing from your pay, your employer must also pay into your KiwiSaver. From the first pay date on or after 1 April 2026, the default rate for both you and your employer rose from 3% to 3.5%, on its way to 4% from 1 April 2028. That employer 3.5% is on top of your wages. If you opt out or take a savings suspension, you give it up. Staying in and contributing is the only way to get it.

2. The government contribution

Each KiwiSaver year, which runs from 1 July to 30 June, the government adds 25 cents for every dollar you put in, up to a maximum of $260.72. To get that full $260.72 you need to have contributed at least $1,042.86 of your own money during the year. You must be aged 16 to 65 and have a taxable income of $180,000 or less. Your provider claims it for you, so you do not need to apply, but you do need to have put in enough.

💡 The government contribution changed on 1 July 2025

Before 1 July 2025, the government paid 50 cents per dollar up to $521.43. From 1 July 2025 that halved to 25 cents per dollar up to $260.72, and a new income test removed it for people earning over $180,000. The amount you need to contribute for the maximum, $1,042.86, did not change.

Why "Sure Things" Come Before the Share Market

Notice the pattern. Steps 2 and 3 both give you a return that is either guaranteed (clearing debt) or free (the KiwiSaver match). Investing your own money in the share market, step 7, has a higher long-run expected return than cash, but it is not guaranteed and it is taxed. It would be strange to chase an uncertain, taxed 7% while ignoring a certain, tax-free 22% sitting on your credit card, or leaving your employer's 3.5% on the table. The order simply puts the surest, highest-value dollars first.

⚠ Do not skip the buffer

It is tempting to throw every spare dollar at debt or investments and keep no cash. But with nothing set aside, a single car repair or vet bill sends you straight back to the credit card, undoing your progress. That is why a small starter buffer of about $1,000 sits at step 1, before you attack the debt in earnest.

📊 The Priority Order, Step by Step

Now let's walk through each step, what it means in practice, and how to know when you have finished it and can move on.

Step 1: Essentials and a Small Starter Buffer

Before anything else, your income needs to cover your essential costs: rent or mortgage, food, power, transport, insurance and minimum debt repayments. Once those are covered, set aside a small starter buffer of about $1,000 in an on-call savings account. This is not your full emergency fund. It is a shock absorber that stops a minor surprise turning into new debt while you work on the steps below.

💡 Why start with a buffer, not the debt

Sorted, the government-backed money guidance service, suggests starting with about $1,000 saved before you throw everything at debt, for exactly this reason: if you pour all your cash into the card and then face a bill, you end up borrowing again. A small buffer breaks that cycle.

Step 2: Clear High-Interest "Bad" Debt

With a buffer in place, attack your expensive debt. List every high-interest debt with its balance and interest rate, then focus your spare money on the one with the highest rate while paying the minimum on the rest. This is the "avalanche" method, and it saves the most interest. Once the highest-rate debt is gone, roll that payment onto the next one. Keep the buffer topped up as you go.

You know you have finished this step when you have no debt charging more than you could reasonably earn after tax by investing. As a rough line, anything above about 8% to 10% is worth clearing first.

Step 3: Capture the Full KiwiSaver Contributions

Once the bad debt is under control, make sure you are not leaving free money behind. For an employee, that means contributing enough from your pay to receive the full employer contribution, and enough across the KiwiSaver year to receive the full $260.72 government contribution. If you are self-employed or not earning wages, you can still get the government contribution by paying at least $1,042.86 into your KiwiSaver by 30 June each year.

KiwiSaver free money (2026/27) What you get What you must do
Employer contribution 3.5% of your pay, on top of wages Be an employee and keep contributing (no savings suspension)
Government contribution Up to $260.72 a year Contribute at least $1,042.86 between 1 July and 30 June

Step 4: Build a Full Emergency Fund

Grow your starter buffer into a proper emergency fund of about three months of essential costs, held somewhere safe and easy to reach such as an on-call savings account. Three months is a common target; if your income is variable or your job is less secure, aim closer to six. This fund is what lets you handle a job loss, a health event or a big repair without selling investments at a bad time or reaching for a 20% credit card.

Steps 3 and 4 often run together: You do not have to fully finish your emergency fund before your KiwiSaver contributions count, because those come out of your pay automatically. In practice you keep KiwiSaver going while you build the cash buffer up to three months.

Step 5: Save for Medium-Term Goals in the Right Vehicle

Money you will need in roughly one to five years, such as a house deposit, a wedding or a car, should not sit in the share market, where a downturn could hit right when you need it. Match the vehicle to the timeframe:

  • Term deposits: lock in a fixed return for a set period, with your capital protected. Good for a known date.
  • Cash and bond PIE funds: a little more return than a bank account, with low volatility, for money you may need at short notice.
  • On-call savings: for anything you might spend within a year.

Step 6: Mortgage or Invest?

If you have a mortgage, extra repayments give you a guaranteed, tax-free return equal to your mortgage rate. Investing instead might earn more over time, but it is not guaranteed and it is taxed. The honest comparison is: to beat paying down the mortgage, your investment must earn the mortgage rate divided by your after-tax fraction. At a 5.99% mortgage and a 28% PIR, that is about 8.3% before tax, every year. Many people split the difference, putting some into the mortgage for the certainty and some into investments for growth and access.

Step 7: Invest for the Long Term

With the sure things handled, invest the rest for the long term in low-cost, diversified funds such as index funds or diversified PIE funds, at a risk level you can hold through a downturn. Diversification spreads your money across many companies and countries, so no single failure sinks you. The single biggest driver of your result is time in the market, so the aim is to start early, keep costs low, and leave it alone.

⚠ Match your risk to your timeframe

A growth or share fund can fall 20% or more in a bad year. That is fine for money you will not touch for a decade, and dangerous for money you need next year. Pick a fund whose ups and downs you can live with, and never invest your emergency fund.

🔢 Worked Examples

These four New Zealand examples show the order in action. Every figure is worked through by hand so you can follow the logic.

1
Aroha - Credit Card or Invest?

Situation: Aroha has $5,000 owing on a credit card charging 22.95% a year, and she has just received a $5,000 bonus. She wonders whether to invest the bonus in an index fund she expects to average about 7%, or use it to clear the card.

Option A: Pay off the card

Interest avoided in the first year: $5,000 × 22.95% = $1,147.50
This saving is guaranteed and is not taxed
Card cleared, $1,147.50 kept for certain

Option B: Invest the bonus, keep the card

Expected fund gain: $5,000 × 7% = $350 (not guaranteed)
Less PIE tax at 28%: $350 × 0.72 = $252 after tax
Card interest still charged: $5,000 × 22.95% = $1,147.50
Net position: $252 - $1,147.50 = about $895.50 worse off
Result: Paying the card leaves Aroha about $895.50 better off after one year, with no risk. For investing to win, the fund would need to earn about 31.9% before tax (22.95% divided by 0.72) just to match the card. Clearing the debt is the clear winner.
2
Mere - Leaving the KiwiSaver Match on the Table

Situation: Mere is a self-employed graphic designer, so no KiwiSaver comes out of a pay packet. By June she has paid $500 into her KiwiSaver for the year that runs 1 July to 30 June. She has $600 spare and is about to buy an index fund with it.

What she has captured so far

Government contribution earned: $500 × 25% = $125
Maximum available: $260.72 (needs $1,042.86 contributed)
Still on the table: $260.72 - $125 = $135.72

If she tops up her KiwiSaver first

Top-up needed: $1,042.86 - $500 = $542.86
Extra government money: $542.86 × 25% = $135.72
That is an instant 25% return before any market movement
💡 Free money first

Mere's $600 does far more inside KiwiSaver this year than in an index fund. Putting $542.86 in before 30 June earns a guaranteed $135.72 from the government. Only after capturing that full contribution does it make sense to invest the rest wherever she likes.

3
Wiremu and Hine - Mortgage or Invest?

Situation: Wiremu and Hine have no bad debt, capture their full KiwiSaver contributions, and hold a three-month emergency fund. They have $10,000 spare and a mortgage fixed at 5.99%. Should they pay down the mortgage or invest?

Paying down the mortgage

Guaranteed, tax-free saving: $10,000 × 5.99% = $599 in the first year
The saving is certain and shortens the loan

Investing instead

To beat the mortgage after 28% PIE tax, a fund must earn:
5.99% ÷ 0.72 = about 8.3% before tax, every year
A 7% fund after 28% tax is 7% × 0.72 = 5.04%, below 5.99%
On return alone, paying the 5.99% mortgage wins, with no risk
Result: Because their mortgage rate is higher than a typical fund's after-tax return, paying it down is the stronger risk-free move. Many couples still split the money, some to the mortgage for certainty and some invested for growth and access. There is no single right answer, but the 8.3% hurdle makes the trade-off clear.
4
Sione - Emergency Fund Before Shares

Situation: Sione earns $55,000, has no bad debt, and receives his full KiwiSaver match. He has $6,000 saved and is keen to put it all into a share fund. His essential monthly costs are $2,600.

How big his emergency fund should be

Three months of essentials: $2,600 × 3 = $7,800
Current savings: $6,000
Gap to fill first: $7,800 - $6,000 = $1,800

Why the fund comes first

If he invests all $6,000 and then loses hours or faces a big bill:
He may have to sell shares in a downturn, locking in a loss
Or reach for a credit card at 20% or more, undoing his progress
Top the fund to $7,800 first, then invest the surplus
⚠ The emergency fund is not "wasted" cash

It can feel dull to hold $7,800 in a savings account earning little while shares climb. But that cash is what lets Sione stay invested through a downturn instead of being forced to sell. It is the foundation that makes long-term investing possible.

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💡 Sources

Figures verified July 2026 against Inland Revenue (KiwiSaver government contribution of 25 cents per dollar to a maximum of $260.72, needing $1,042.86 contributed in the 1 July to 30 June year; the 1 April 2026 default rate of 3.5%; prescribed investor rates capped at 28%) and Sorted (starting emergency savings of about $1,000 then building to three to six months of expenses, and clearing highest-interest debt first). See ird.govt.nz and sorted.org.nz.

🎯 Test Your Knowledge

Complete this 10-question quiz to check your understanding of the order of investing

1. Once your essential bills are covered and you have a small starter buffer, what comes next in the order?
Buying shares in a single company
Clearing high-interest debt such as credit cards
Paying extra off a low-rate mortgage
Opening a five-year term deposit
2. Why is paying off a 22% credit card called a "guaranteed, tax-free return"?
You save the interest for certain, and the saving is not taxed
The bank refunds your interest at the end of the year
Credit card interest is tax deductible in New Zealand
The government matches every repayment you make
3. How much of your own money must you contribute in a KiwiSaver year to get the full government contribution?
$260.72
$521.43
$1,042.86
$2,085.72
4. What is the maximum annual KiwiSaver government contribution from 1 July 2025?
$521.43
$260.72
$1,042.86
$1,000.00
5. The KiwiSaver year for the government contribution runs from:
1 April to 31 March
1 July to 30 June
1 January to 31 December
1 October to 30 September
6. How big an emergency fund does this guide suggest aiming for?
One week of pay
About three months of essential costs
A full year of income
Ten years of savings
7. To beat paying down a 5.99% mortgage, roughly what must a PIE fund earn before tax at a 28% rate?
About 5.99% a year
About 8.3% a year
About 4.3% a year
About 2% a year
8. Which of these counts as high-interest "bad" debt to clear early?
A 5% home loan
A student loan, which is interest-free in New Zealand
Buy Now Pay Later fees and payday loans
An interest-free hire purchase paid on time
9. Why does capturing the full KiwiSaver match come before investing on your own?
The employer and government contributions are an immediate boost you cannot get elsewhere
KiwiSaver funds always beat every other investment
You are legally required to fill KiwiSaver before investing
KiwiSaver has no fees, unlike other funds
10. A diversified index or PIE fund is generally best suited to which goal?
Money you need next month
Clearing a payday loan
Long-term investing after the earlier steps are done
Your day-to-day bills

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Data sources: the rates and thresholds on this page are maintained against Inland Revenue. Figures are checked twice monthly.

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