How to buy NZX shares: a beginner's guide for New Zealanders

Buying shares on the NZX (New Zealand's Exchange) is simpler than most people expect. You don't deal with the exchange directly. You open an account with a broker or investing platform, put money in, and place an order. This guide walks through each step and explains the terms you'll see along the way.

What the NZX is

The NZX is New Zealand's stock exchange. Its Main Board lists the country's largest public companies, from power companies and airports to healthcare, retail and telecommunications businesses. The best-known index is the S&P/NZX 50, which tracks 50 of the largest companies on the market. When news reports say "the NZX 50 rose 0.4% today", that's the index they mean.

Owning a share makes you a part-owner of the company. You can benefit if the share price rises and from any dividends the company pays, and you can lose money if the price falls.

Step 1: Choose how you'll buy

There are two broad ways to buy NZX shares.

• Investing apps and online platforms. These let you open an account online in minutes, often with low minimums and the ability to buy part of a share. Examples New Zealanders commonly use include Sharesies and Hatch, alongside the online share-trading services run by banks such as ASB Securities.
• Full-service brokers. Firms such as Jarden and Craigs Investment Partners offer advice and research, usually for higher fees. They suit people who want guidance or are investing larger sums.

When comparing options, look at:

• Brokerage fees. The fee per trade, often a flat amount or a percentage of the trade value.
• Whether you own the shares in your own name. Some platforms hold shares through a custodian (a nominee company) on your behalf. Others register the shares to you with your own shareholder number. Both are common; the difference affects things like voting and moving shares between providers.
• Access to the ASX. If you'll want Australian shares later, it's easier if one account covers both markets. See how to buy ASX shares from New Zealand.

Fees and features change often, so check each provider's current pricing page before signing up.

Step 2: Open and verify your account

You'll need to prove your identity under anti-money-laundering rules, usually with a passport or driver licence, plus your IRD number and bank account. Giving your IRD number matters: it means tax on your dividends is deducted at the right rate rather than the highest default rate.

Step 3: Understand your shareholder numbers

You'll come across two identifiers:

• CSN (Common Shareholder Number). Your number on the NZX share registers, used when shares are held in your own name.
• FIN (FASTER Identification Number). A PIN-like code that lets a broker sell shares held under your CSN. Keep it private.

If your platform holds shares for you through a custodian, you may never need either. If you transfer shares between brokers, you'll need both.

Step 4: Research the company

Before buying, read what the company itself has published. Every NZX-listed company must announce price-sensitive information promptly through the exchange, so the announcements page is the primary source for results, guidance and major events. Our guide to reading NZX and ASX company announcements explains what to look for.

Also check:

• Recent results: revenue, profit and what management said about the outlook.
• Dividend history: whether the company pays dividends and how reliably. See ex-dividend dates explained.
• Debt: how much the company owes relative to its earnings.
• What moves the business: exchange rates, interest rates, commodity prices or tariffs. Our guide to how tariffs, oil and the NZ dollar move shares covers this.

Step 5: Place your order

When you buy, you choose an order type:

• Market order. Buy now at the best available price. Fast, but you don't control the exact price, which matters for thinly traded shares.
• Limit order. Buy only at your chosen price or better. If the market doesn't reach it, the order waits (often for a set number of days) and may not fill.

Many smaller NZX companies trade only a few hundred thousand dollars a day. In those, a limit order protects you from paying well above the last price.

Orders placed outside market hours queue up for the next opening auction. The NZX's normal trading session runs from 10:00am to 4:45pm New Zealand time on business days; see NZX and ASX trading hours for the full schedule.

Step 6: Settlement

NZX trades settle two business days after the trade (T+2). That's when the money leaves your account and the shares are formally transferred to you. If you sell, your cash arrives two business days later. Most platforms handle this behind the scenes, but it explains why sale proceeds aren't available instantly.

Step 7: Dividends and tax

If the company pays a dividend and you own the shares before the ex-dividend date, you'll receive it. NZ dividends usually come with imputation credits, which represent tax the company has already paid. Resident withholding tax is then deducted to top up to your rate. Our guide to imputation and franking credits explains how this works.

New Zealand has no general capital gains tax on shares. However, gains can be taxable if you buy shares with the main purpose of selling them, or if you're in the business of trading. If that might be you, talk to a tax adviser.

Common beginner mistakes

• Putting everything in one company. A single bad result can cut a share price by a third. Spreading money across companies, sectors or a fund reduces that risk.
• Chasing yesterday's big mover. By the time a jump is in the news, the price usually reflects it.
• Ignoring fees on small trades. A flat fee on a $100 purchase can be several percent of your investment.
• Not keeping records. Note the date, price, quantity and fees of every trade. You'll need them for tax and for knowing how you're actually doing.

Frequently asked questions

How much money do I need to start buying NZX shares?

There's no exchange minimum. Some platforms let you start with a few dollars by buying a fraction of a share. Traditional brokers may have a minimum trade size or a minimum fee that makes very small purchases uneconomic.

What time can I buy NZX shares?

Continuous trading on the NZX runs from 10:00am to 4:45pm New Zealand time on business days. You can usually place orders outside those hours, and they queue for the next opening.

Do I pay tax when I sell NZX shares?

New Zealand doesn't have a general capital gains tax, so most long-term investors don't pay tax on share gains. Gains can be taxable if you bought the shares mainly to sell them or you're trading as a business. Dividends are taxable income.

What is a CSN and do I need one?

A CSN (Common Shareholder Number) identifies you on NZX share registers when shares are held in your own name. If your platform holds shares through a custodian, you might not need one.

Can I buy Australian shares too?

Yes. Many New Zealand platforms offer ASX shares, and some large companies are listed on both exchanges. Read how to buy ASX shares from New Zealand for the differences.