How to Become Self-Employed in New Zealand: What to Set Up

Short answer: How to become self-employed in New Zealand involves no registration at all — you are a sole trader the moment you start trading. You use your own personal IRD number, the same nine-digit number you already have, and declare your net profit on an IR3 after the 31 March balance date. GST registration is compulsory only once turnover reaches $60,000 in any 12-month period, and the rate is 15%. Keep every record for at least seven tax years.

New Zealand has one of the lightest set-up regimes anywhere: you become self-employed by starting to work for yourself, and Inland Revenue says as much — a sole trader can start in business without any formal set-up tasks. What follows is the short list of things that genuinely apply, and the ones that only apply later. Once you are trading, self-employed taxes in New Zealand covers the numbers in depth.

Do I need to register to become self-employed in New Zealand?

No. There is no sole trader register, no licence, and no application to fill in. You are self-employed the moment you start working on your own account with an expectation of profit.

What does trigger a registration is a specific event, not the decision itself.

Situation	Do you have to register?
Trading under your own name as a sole trader	No
Trading under a business name (“Kāpiti Joinery”)	No — there is no sole trader name register in NZ
Turnover reaches $60,000 in any 12 months	Yes — register for GST with Inland Revenue
You add GST to your prices	Yes — regardless of turnover
Taking on staff	Yes — register as an employer
Incorporating a company	Yes — with the Companies Office; a different structure entirely
Wanting an identifier suppliers recognise	Optional — an NZBN, free

The absence of a name register surprises people arriving from Australia or the UK. If you want to protect a trading name in New Zealand you are looking at trade mark law or company incorporation, not a business name registration.

Which identifiers do I actually need?

Fewer than you think. The single most common misconception is that a sole trader gets a second, separate tax number for the business.

Identifier	Do you need it?	Cost
IRD number	Yes — your existing personal one	Free
NZBN	Optional	Free
GST number	Only once you register for GST	Free
Company number	Only if you incorporate	Companies Office fee

A sole trader uses their personal IRD number for the business. You do not apply for a second one. Your business income and your personal income sit under the same nine-digit number, which is why the IR3 handles both.

If you do not have an IRD number yet — you have recently arrived, or you have never earned taxable income here — you can apply through Inland Revenue using form IR595 if you are in New Zealand, or IR742 if you are offshore. Inland Revenue is explicit that “you do not need to pay us when you apply for an IRD number.” Allow 10 working days if you apply online and 12 if you use the paper form; from overseas IRD aims to process within 20 days. Do this before your first invoice, not after. If your number is an older 8-digit one, add a leading zero when entering it into IRD systems.

An NZBN is free and optional. It is not a tax number and grants nothing; it is an identifier that speeds up dealing with government, suppliers and larger clients who ask for one on their onboarding forms. Apply at nzbn.govt.nz using the IRD number the business trades under.

When do I have to register for GST?

Inland Revenue’s test is precise. You must register if you carry out a taxable activity and your turnover was at least $60,000 in the last 12 months, or you expect it will be at least $60,000 in the next 12 months.

Two things about that sentence catch people out.

• It is turnover, not profit. A courier billing $75,000 with $30,000 of running costs is over the threshold, not under it.
• It is any rolling 12 months, not a tax year. A run of good months mid-year can push you over.

You must also register regardless of turnover if you carry out a taxable activity and add GST to your prices. Charging GST without being registered is the one version of this that goes badly.

GST is 15%. Once registered you charge it, claim it back on business purchases, and file returns on a frequency you choose within the limits IRD sets: six-monthly is open to anyone with sales under $500,000 in any 12-month period, two-monthly to anyone under $24 million, and monthly filing becomes compulsory above $24 million. Most new sole traders sit in the six-monthly or two-monthly band. Voluntary registration below $60,000 is allowed and sometimes worth it, though it commits you to filing returns from then on. Register as soon as you meet the test rather than at year end, and check the current rules on the GST registration page.

One terminology change worth absorbing: since 1 April 2023 the legal requirement is to provide taxable supply information, not a “tax invoice”. For supplies over $200 you must give the buyer prescribed details, and over $1,000 those must identify the buyer. At $200 or less you need not provide it, but you must still keep the record. Practicalities are in how to invoice as a contractor in New Zealand.

What tax do I pay as a sole trader, and at what rates?

You pay income tax on your net profit — income minus allowable expenses — at ordinary personal rates. There is no separate business tax and no separate business return.

Rates from 1 April 2025 — still the current bands for the year to 31 March 2027, and worth re-checking on Inland Revenue’s tax rates for individuals page each April:

Taxable income	Rate
$0 – $15,600	10.5%
$15,601 – $53,500	17.5%
$53,501 – $78,100	30%
$78,101 – $180,000	33%
$180,001 and over	39%

On top of that sit ACC levies. The earners’ levy is $1.75 per $100 of liable earnings (1.75%) for the year 1 April 2026 to 31 March 2027, on earnings up to $156,641 — a maximum of $2,741.22. The legislated rate rises to 1.83% for the year to 31 March 2028, on earnings up to $160,244. Self-employed people also pay a work levy set by your ACC classification unit, so your total is calculated by ACC rather than IRD. The invoice arrives after you file, because Inland Revenue passes a summary of your IR3 earnings to ACC, which combines it with your classification unit to work out the bill — CoverPlus invoices go out around September. Budget for it: a first ACC bill landing unexpectedly is a common cashflow shock. Current levy rates and cover options are on acc.co.nz.

If you do contract work in certain industries, your payer may deduct schedular payments at source. You give them a form IR330C with your chosen rate — the form says an elected rate “cannot be lower than 10%” for most resident contractors, or 15% if you are a non-resident or hold a temporary entry class visa. Fail to complete the form and your payer must deduct at the no-notification rate of 45%. Tax withheld this way is a credit against your final bill; you still file an IR3.

What is the tax year, and when is my first return due?

The New Zealand tax year runs 1 April to 31 March. Inland Revenue names a year by the date it ends, so “the 2027 tax year” means 1 April 2026 to 31 March 2027. Non-standard balance dates exist but need IRD approval, and everything below assumes the standard one.

What	When
Tax year ends	31 March
IR3 due — no tax agent	7 July
IR3 due — client of a tax agent with a valid extension of time	31 March the following year
End-of-year (terminal) tax due — no tax agent	7 February the following year
End-of-year (terminal) tax due — tax agent with an extension of time	7 April the following year
Provisional tax instalments — standard or estimation option, 31 March balance date	28 August, 15 January, 7 May

So if you start trading now, your first return covers the year to 31 March 2027 and is due 7 July 2027 unless you engage a tax agent. If a due date falls on a weekend or public holiday, the next business day is fine without penalty.

Two practical notes. IRD suggests waiting until June to file, because employers and financial institutions report their information first and an April filing can pull through an incomplete pre-populated return. And you file an IR3 if you received more than $200 (before tax) of income IRD has not been told about — which means a sole trader files even in a loss-making year. The mechanics are covered in the IR3 explained.

Do I have to pay provisional tax in my first year?

Generally no, and that is exactly why year two hurts.

Provisional tax is not a separate tax; it is income tax paid in instalments during the year. IRD’s test is whether you “had to pay more than $5,000 tax at the end of the year from your last return” — residual income tax over $5,000. In year one there is usually no prior return showing that, so nothing is payable during the year and the whole bill lands at terminal tax — after which provisional instalments for year two begin while you are still settling year one.

The result is that year two can require close to two years of tax inside twelve months. No rule is broken; the timing is simply brutal for anyone who spent year one’s tax. As Inland Revenue puts it, “your first year in business is not tax free” — and voluntary payments made before the tax is due can earn an early payment discount. Setting aside a fixed percentage of every payment from your first week is the only reliable defence.

If you already file an IR3 for other income and your last return showed residual income tax over $5,000, you can be a provisional taxpayer from the start, so check your own position rather than assuming year one is clear.

What should I set up in week one?

None of this needs an accountant, and all of it is easier before there is a backlog.

1. Confirm you have your IRD number, or apply with IR595 now.
2. Open a separate bank account for the business. Not legally required for a sole trader, but it turns seven tax years of records from a forensic exercise into a readable one.
3. Decide your invoice numbering and never break the sequence.
4. Set the taxable supply information you will put on every invoice: your name, GST number if registered, date, description, amount.
5. Start a receipt habit on day one, not in June.
6. Start a kilometre log the first time you drive for work. For the 2025-26 income year — the year ended 31 March 2026 — the tier one rate was $1.20 a kilometre for a petrol vehicle, applied to the business portion of the first 14,000 kilometres the vehicle travelled (business and private combined), with a tier two rate of 37 cents a kilometre once total travel passes 14,000 kilometres. Rates for the current year are not published until after 31 March, which is normal; details are in kilometre rates and vehicle expenses.
7. Open a second account for tax and move a set percentage across on every payment received.
8. Diarise 31 March, 7 July and 7 February.
9. Decide whether you want a tax agent. The extension of time is theirs, not yours, and it is the difference between a July and a following-March filing deadline.

How do I keep the records without handing them to a cloud service?

Inland Revenue’s requirement is blunt: “keep all your records (including those in electronic form) for at least 7 tax years”, and they “must be in English or Māori, unless you get approval from us to use another language.” That applies even if you stop trading. If you store records offshore — and most cloud storage is offshore — either you or your provider must have IRD approval. That single line is why some sole traders would rather the records simply stayed on their own device.

Keel: Invoice Maker & Receipts is built that way. Invoices you send as PDFs with your own numbering and logo, receipts photographed and read on device by Apple Intelligence, trips logged with date, distance and purpose, and the year exported as one file for your accountant. There is no account, no sign-in and no bank connection; the App Store privacy label reads “Data Not Collected.”

The honest tradeoff: nothing imports itself. With no bank feed, every receipt is a photograph you take and every trip is a log you start — more discipline in the moment, a smaller pile at year end, and what counts as a receipt becomes a question you answer as you go rather than in June.

Keel is free with unlimited invoices, receipts and mileage; Keel Pro is a one-time $249.99 Lifetime purchase, not a subscription. Keel on the App Store.

Frequently asked questions

How do I become self-employed in New Zealand? You start working on your own account — there is no registration, licence or form to become a sole trader. Use your existing personal IRD number, keep records of income and expenses from day one, and declare your net profit on an IR3 after 31 March. Register for GST only once turnover reaches $60,000 in any 12 months.

Do I need to register as a sole trader in NZ? No. New Zealand has no sole trader register and no business name register, so trading under your own name or a trading name requires nothing. Registration is triggered by events instead: GST at $60,000 of turnover, becoming an employer, or incorporating a company with the Companies Office. An NZBN is free but entirely optional.

Do I need a separate IRD number for my business? No. A sole trader uses their personal IRD number for the business — you do not get a second one. Companies, trusts and partnerships are separate entities and do have their own numbers. If you have no IRD number yet, there is no fee to apply — use form IR595 in New Zealand or IR742 from overseas, and allow about 10 working days for an online application (12 for the paper form).

When do I have to register for GST in New Zealand? When your turnover was at least $60,000 in the last 12 months, or you expect it will be at least $60,000 in the next 12 months. It is turnover, not profit, and it runs on any rolling 12 months rather than the tax year. You must also register at any turnover if you add GST to your prices. The rate is 15%.

When is my first tax return due as a sole trader in NZ? The tax year ends 31 March and the IR3 is due 7 July if you do not have a tax agent. Clients of a tax agent with a valid extension of time have until 31 March the following year. IRD suggests waiting until June to file so employer and bank information has been reported first.

How long do I need to keep records as a sole trader in New Zealand? At least 7 tax years, including electronic records, and the obligation continues even if you stop trading. Records must be in English or Māori unless IRD approves another language. If you store them offshore, including in cloud services, either you or your provider needs Inland Revenue’s approval.

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This article is general information, not tax advice. Consult a qualified New Zealand accountant or tax professional.