NZ New Company GST Registration: Complete Guide for 2026

When Must a New NZ Company Register for GST?

Goods and Services Tax (GST) in New Zealand is administered by Inland Revenue (IRD). A new company must register for GST if its taxable turnover exceeds NZ$60,000 in any 12-month period, or if you reasonably expect it to in the next 12 months.

The NZ$60,000 threshold is based on turnover (revenue before expenses), not profit. Most business-to-business service companies will hit this within their first year. If you have one decent client, you are likely over the threshold within months.

Voluntary GST Registration: Should You Register Early?

Even below NZ$60,000 turnover, many new NZ companies benefit from voluntary GST registration. The main reason: you can claim GST back on all your startup expenses.

If you spent NZ$5,000 setting up (laptop, software, office equipment, professional fees), registering for GST lets you claim NZ$652 back from IRD (the 15% GST component). That is free cash your competitors who are not registered cannot access.

You should consider voluntary registration if:

• Your startup costs are significant (equipment, fit-out, professional fees)
• Most of your customers are GST-registered businesses (they can reclaim the GST you charge)
• You expect to exceed NZ$60,000 within 12 months anyway

Voluntary registration is less useful if: your customers are mostly non-GST-registered individuals (you are making your prices 15% more expensive), or if your startup costs are minimal.

How to Register for GST in NZ

GST registration is free and done through myIR (IRD's online portal). The process takes 10-20 minutes if you have your details ready:

1. Log in to myIR at ird.govt.nz using your company's IRD number (issued when you incorporated)
2. Select "Register for a new tax type" → "GST"
3. Enter your expected annual taxable supplies (turnover)
4. Choose your GST filing frequency (see below)
5. Choose your accounting basis (invoice or payments — see below)
6. Confirm your bank account for refunds

IRD typically processes registrations within 1-3 business days. You will receive a GST registration number (usually the same as your IRD number for companies). You must start charging GST from the date your registration is effective.

GST Filing Frequencies: Which Should You Choose?

IRD offers three main options:

• Two-monthly (bi-monthly): File and pay GST every two months. The most common choice for new businesses. Manageable frequency, and you pay before you forget the details.
• Six-monthly: Available only if your annual taxable supplies are under NZ$500,000. Good for businesses with very steady, predictable cash flows. Risk: a large lump sum payment twice a year can be a shock.
• Monthly: Available if your supplies exceed NZ$24 million/year, or if you regularly receive GST refunds (e.g. exporting businesses). Not typical for new companies.

Most new NZ companies choose two-monthly. It keeps cash flow predictable and gives you regular reconciliation practice before you build up a large liability.

Invoice Basis vs Payments Basis: The Critical Choice

This is the accounting basis you report GST on, and it matters enormously for cash flow.

Invoice basis: You account for GST when you issue or receive an invoice — regardless of whether cash has actually changed hands. If you invoice a client NZ$11,500 (incl. NZ$1,500 GST) on 30 June, you owe IRD NZ$1,500 in your June return, even if the client pays in August.

Payments basis: You account for GST only when cash actually moves. Available only if your annual taxable supplies are NZ$2 million or less. Many new companies choose this because it matches cash reality — you only pay IRD GST you have actually collected.

For most new NZ companies, the payments basis is safer in year one. It eliminates the risk of paying GST on invoices that later go unpaid.

Zero-Rated and Exempt Supplies: What Is and Is Not GST-Taxable

Not all goods and services attract 15% GST. Key categories relevant to new NZ companies:

• Zero-rated (0% GST): Exports of goods and certain services to overseas customers; land transactions; financial services (subject to specific rules). Zero-rated means you still charge GST, but at 0% — you can still claim input tax credits.
• Exempt (no GST at all): Residential rental income; financial services (interest, lending). Exempt supplies cannot have their GST reclaimed.
• Standard-rated (15% GST): Almost all New Zealand B2B and B2C sales of goods and services.

If your company exports services or sells to overseas customers, confirm with an accountant whether those sales are zero-rated — this can create a regular GST refund position where IRD pays you back GST on your NZ business costs.

The Cash Flow Trap: GST Is Not Your Money

The most common mistake new company directors make: spending the GST portion of customer payments on business expenses, then scrambling to pay IRD at filing time.

The 15% GST collected from customers is IRD's money, held in trust by your company. The cleanest habit: open a separate GST holding account and transfer 15/115ths of every payment you receive into it immediately. When your GST return is due, the money is already sitting there.

Example: you receive NZ$11,500 from a client. Transfer NZ$1,500 (the GST portion) to your holding account. Your operating cash is NZ$10,000. No surprise at return time.

Claiming GST on Business Expenses (Input Tax Credits)

One of the main benefits of being GST-registered is claiming back the GST paid on business purchases. To claim, you need a valid tax invoice from the supplier showing their GST number and the GST amount.

Common deductible GST items for new companies:

• Laptops, phones, office equipment
• Software subscriptions (Xero, Office 365, Slack, etc.)
• Professional fees (accountant, lawyer, IT setup)
• Marketing and advertising spend
• Vehicle costs (if used for business — subject to private use adjustment)
• Rent for commercial premises
• Stationery and office supplies

Keep all tax invoices — digitally or physically. The NZ Companies Act requires you to retain financial records for 7 years.

Common GST Mistakes New NZ Companies Make

• Not registering on time: If you hit NZ$60,000 and have not registered, you are liable for the GST on all sales since the threshold was crossed — even if you did not charge your clients GST.
• Charging GST before you are registered: You cannot charge GST until your registration is effective. Charging before that date is illegal.
• Missing return deadlines: GST returns are due the 28th of the month following the end of your GST period (except November, which is due 15 January). Late payment incurs a 1% late payment penalty immediately, then 4% if unpaid after 7 days, then 1% monthly.
• Using the wrong GST rate for overseas services: If you buy digital services (Google Ads, software subscriptions) from overseas providers, you may not receive a NZ GST invoice — the import GST rules are complex and often overlooked.

Getting Help: When to Use an Accountant for GST

GST registration and initial setup is straightforward enough to do yourself through myIR. However, engaging a NZ accountant is worth it if:

• Your business has both GST-taxable and exempt supplies
• You have significant startup costs you want to claim
• You sell to overseas customers and need to confirm zero-rating
• You are restructuring or buying an existing business (complex GST rules apply)

A GST setup consultation with a NZ accountant typically costs NZ$200-500 and can save multiples of that in avoided mistakes.