Open Source Invoice Template for New Zealand

The Open Source Invoice template is a standardized billing document designed to meet New Zealand's specific legal and tax requirements. This comprehensive template ensures your business invoices comply with the Goods and Services Tax Act 1985, Tax Administration Act 1994, and other relevant commercial legislation while providing the flexibility to adapt to your business needs.

When do you need this document?

You need this invoice template whenever your business provides goods or services and requires payment from customers. It's essential for GST-registered businesses that must issue tax invoices for transactions over $50, freelancers and contractors billing clients, service providers documenting their work, and any business wanting to maintain professional financial records. The template is particularly valuable for small to medium enterprises establishing formal billing processes, businesses transitioning to electronic invoicing systems, and companies ensuring compliance with New Zealand's tax and commercial requirements.

Key legal considerations

Your invoice must include specific mandatory information to comply with New Zealand law. For GST-registered businesses, invoices over $50 must contain your GST number, the words "Tax Invoice," a detailed description of goods or services, the GST amount charged, and the total amount including GST. Under the Contract and Commercial Law Act 2017, invoices form part of your contractual relationship with customers, so payment terms must be clearly stated and reasonable. The Privacy Act 2020 requires you to protect customer information included on invoices, while the Fair Trading Act 1986 ensures all pricing and service descriptions are accurate and not misleading. Electronic invoices are legally valid under the Electronic Transactions Act 2002, provided they meet the same requirements as paper invoices.

Legal requirements in New Zealand

New Zealand law mandates specific invoice requirements depending on your business registration status. GST-registered businesses must comply with the Goods and Services Tax Act 1985 by including their GST number, clearly marking invoices as "Tax Invoices" for amounts over $50, and separately showing GST amounts. The Tax Administration Act 1994 requires you to maintain invoice records for at least seven years and ensure all information is accurate for tax purposes. Your invoice must include your business name and contact details, a unique invoice number, the invoice date, customer details, and a clear description of goods or services provided. Payment terms should specify due dates and any applicable interest on overdue payments. For electronic invoices, ensure your system meets the Electronic Transactions Act 2002 requirements for digital document validity and customer consent for electronic delivery.