Tax Invoice Template (New Zealand)

A Tax Invoice Template in New Zealand records the goods or services supplied, the amounts payable, and the payment terms between supplier and customer, consistent with the Goods and Services Tax Act 1985.

The Goods and Services Tax Act 1985 (NZ) sets out the mandatory elements that every valid tax invoice must contain: the words 'Tax Invoice' displayed prominently; the supplier's name and GST registration number issued by Inland Revenue; the date of issue; a description of the goods or services sufficient to identify them; the quantity or volume of the supply; the GST-exclusive amount; the amount of GST charged (15%); and the GST-inclusive total. A document that omits any of these elements — particularly the supplier's GST registration number — is not a valid tax invoice and the recipient cannot use it to support an input tax credit claim. Inland Revenue may disallow ITC claims supported only by invoices that lack the required elements, resulting in additional GST liability for the recipient.

New Zealand Business Numbers (NZBNs) — 13-digit identifiers issued by the New Zealand Business Register (administered by the Companies Office, a division of MBIE) — are not a mandatory GST Act requirement but are increasingly expected on New Zealand tax invoices as a secondary identifier alongside the GST number. The NZBN links to a supplier's registered business information and is used for automated supplier verification in accounting systems.

New Zealand bank account numbers follow a distinctive format unique among developed economies: bank code (2 digits) — branch code (4 digits) — account number (7 digits) — suffix (2–3 digits), for example 01-0102-0123456-000. This format must be included on the tax invoice in exactly this structure for internet banking payment systems to process the payment correctly. Australian bank accounts use BSB and account number formats that are incompatible with New Zealand internet banking — a frequent source of payment delays in trans-Tasman transactions. New Zealand businesses that accept payments from overseas customers may also include their SWIFT/BIC code and IBAN-equivalent for international wire transfers, though most domestic New Zealand payments are processed through the Real Time Gross Settlement (RTGS) system operated by the Reserve Bank of New Zealand.

Inland Revenue's e-invoicing initiative — based on the Peppol network adopted across New Zealand and Australia — enables GST-registered businesses to send and receive structured electronic invoices directly between accounting systems without PDF attachments. The New Zealand Government has mandated Peppol e-invoicing for eligible government agency procurement, and large private sector buyers are progressively adopting the standard. A New Zealand tax invoice template that conforms to the GST Act 1985 mandatory elements is the foundation for transition to Peppol-compliant e-invoicing, which uses the same core data fields (supplier NZBN, GST number, invoice date, line-item description, GST amount, and total) in a structured XML format recognised by Inland Revenue.

A New Zealand tax invoice must be issued every time a GST-registered business makes a taxable supply of goods or services in New Zealand, and a valid tax invoice is the essential document by which a GST-registered recipient claims an input tax credit on their periodic GST return filed with Inland Revenue.

Business-to-business supply chains: The most common use of the New Zealand tax invoice is in GST-registered business-to-business transactions — manufacturer to wholesaler, wholesaler to retailer, professional services firm to corporate client. The recipient requires a valid tax invoice to claim the input tax credit under the Goods and Services Tax Act 1985, reducing their net GST payment to Inland Revenue. Without a valid tax invoice containing the supplier's GST registration number, the recipient's ITC claim may be disallowed on IRD audit.

Construction progress claims under the Construction Contracts Act 2002: New Zealand construction contracts governed by the Construction Contracts Act 2002 require payment claims to be made in a prescribed form that also functions as a tax invoice for GST purposes. Head contractors, subcontractors, and specialist trade contractors must issue progress payment claims as valid tax invoices — including the GST registration number, the GST component at 15%, and the NZ bank account number in the standard format — to trigger the 20-business-day payment schedule response period under the Act.

Professional services and recurring retainers: New Zealand accountants, lawyers, engineers, IT consultants, and marketing agencies operating on monthly retainers must issue GST-compliant tax invoices for each billing period. Under the Goods and Services Tax Act 1985, a GST-registered supplier of services must file GST returns either monthly (for large businesses with turnover above NZD $24 million), two-monthly, or six-monthly, and must issue tax invoices that correctly attribute the GST to the correct return period.

Export invoices and zero-rated supplies: New Zealand exporters supplying goods or services to overseas customers invoice at 0% GST (zero-rated) under section 11 and 11A of the Goods and Services Tax Act 1985. The tax invoice for a zero-rated export supply must still be issued in full compliance with the GST Act requirements — including the supplier's GST number and a clear statement that the supply is zero-rated — so that the exporter can claim input tax credits on New Zealand inputs without charging GST to the overseas customer.

Freelancers and sole traders above the GST threshold: New Zealand freelancers, contractors, and sole traders whose taxable supplies exceed NZD $60,000 in any 12-month period must register for GST with Inland Revenue and begin issuing compliant tax invoices. The transition from non-registered invoicing to GST-registered invoicing requires updating invoice templates to include the GST registration number, the 15% GST component, and the GST-inclusive total — and updating the client about the GST position as of the registration date.

A valid New Zealand tax invoice must contain the following mandatory elements as required by the Goods and Services Tax Act 1985, plus additional commercial best-practice elements that support prompt payment and IRD compliance.

'Tax Invoice' heading: The document must display the words 'Tax Invoice' prominently — not 'Invoice', 'Statement', 'Proforma Invoice', or 'Receipt'. Only a document headed 'Tax Invoice' and containing the required GST elements qualifies for ITC purposes. This is the single most commonly corrected error on New Zealand invoices reviewed during IRD audit.

Supplier's GST registration number: The supplier's GST registration number — issued by Inland Revenue when the supplier registered for GST under the Goods and Services Tax Act 1985 — is the most critical mandatory field. Without this number, the document is not a valid tax invoice and the recipient cannot claim an input tax credit. The GST number is distinct from the IRD number and the NZBN — suppliers should confirm which number appears on their GST registration certificate from Inland Revenue.

Supplier's NZBN: The New Zealand Business Number (NZBN) issued by the New Zealand Business Register (Companies Office, MBIE) should appear on the invoice. While not a GST Act requirement, the NZBN is increasingly used by New Zealand businesses for automated supplier verification and is expected on government agency invoices under the New Zealand Government NZBN mandate.

Date of issue and tax period: The date the invoice is issued determines which GST return period the supply falls into — monthly, two-monthly, or six-monthly, depending on the supplier's filing frequency with Inland Revenue. Backdated or forward-dated invoices can create GST attribution errors that attract IRD scrutiny.

Description and quantity of supply: The description must be sufficient to identify what was supplied — a vague description such as 'professional services' without further detail may be questioned by IRD on audit. For goods, specify the type, quantity (with units), and unit price. For services, specify the nature of the service and the period covered.

GST calculation at 15%: The invoice must show the GST-exclusive amount, the GST amount (15% of the GST-exclusive price, or equivalently 3/23 of the GST-inclusive total), and the GST-inclusive total. Both calculation methods are accepted by Inland Revenue under the GST Act 1985.

NZ bank account in standard format: The supplier's New Zealand bank account number must appear in the format bank-branch-account-suffix (e.g., 01-0102-0123456-000) for internet banking compatibility. The forms-legal.com New Zealand Tax Invoice template includes all seven mandatory and best-practice elements above, pre-formatted for New Zealand Inland Revenue compliance and internet banking payment processing — including the NZ bank account format, NZBN field, and GST calculation methodology specific to the Goods and Services Tax Act 1985.

Late payment interest clause: While New Zealand has no statutory late payment interest regime equivalent to the United Kingdom's Late Payment of Commercial Debts (Interest) Act 1998, the Contract and Commercial Law Act 2017 permits parties to agree on a late payment interest rate in their contract or invoice terms. Including a late payment interest clause — specifying a rate such as 10% per annum, calculated daily on the overdue amount from the due date — provides a contractual remedy for overdue accounts without requiring a separate credit agreement. The interest rate must be specified before the supply is made; it cannot be applied retrospectively without the customer's written agreement.

Record retention: Inland Revenue requires GST-registered businesses to retain tax invoices and GST records for at least 7 years under the Tax Administration Act 1994. Digital copies of tax invoices stored in compliant accounting systems satisfy the retention requirement. Businesses using cloud accounting platforms such as Xero, MYOB, or Figured — widely used by New Zealand businesses — should confirm that their invoice records meet the IRD's electronic record-keeping standards.