Payment Invoice Template - New Zealand

GST is only mandatory on invoices if you're registered with the IRD, which occurs once your turnover exceeds $60,000 per annum. If you're GST-registered, you must show GST separately on all invoices, unless the customer is an approved exempt supplier. For unregistered suppliers, you can include GST in your price but cannot claim it as input tax. Always check your current registration status and client requirements before sending invoices. Many small contractors choose templates that clearly separate GST, making tax compliance easier.

All New Zealand invoices should include your full business name and address, invoice date, unique invoice number, customer name and address, itemized description of goods or services, quantity and price of each item, payment terms, and your contact details. If you're GST-registered, GST must be shown separately with the total including GST clearly displayed. While not legally required for unregistered suppliers, including this information keeps your records professional and helps with the IRD if questions arise about your income and expenses.

A payment invoice is a formal request for payment for work already completed or goods already delivered. A quote or estimate is a proposal for potential work and doesn't constitute a demand for payment. Using a payment invoice template signals to clients that work is finished and payment is due. Sending a quote when you mean to invoice can create confusion about deliverables and payment expectations. For New Zealand contractors and freelancers, clear invoicing prevents disputes and helps maintain professional relationships with clients.

Common payment terms for New Zealand businesses include 'Net 14' (payment due within 14 days) or 'Net 30' (payment due within 30 days). Be explicit about your terms to avoid misunderstandings. If payment is overdue, most professional approaches include a friendly reminder before taking further action. Some invoices note early payment discounts (e.g., '2% discount if paid within 7 days') to encourage prompt payment. Including clear, reasonable payment terms on your invoice template reduces payment delays and maintains positive client relationships.

You can modify the template for international clients, but several factors change. GST doesn't apply to supplies to customers outside New Zealand if the services are consumed outside NZ (zero-rated or GST-free exports). You may need to remove GST from the invoice entirely or show it separately as not applicable. Currency may need to change from NZD to the client's local currency or USD. International invoices often require additional details like your IRD number for verification. Always verify cross-border invoicing rules with a tax professional if you invoice overseas regularly.

Sequential numbering is the best practice for payment invoices. Start with a logical number (e.g., 001, 0001, or the first number like 2025001) and increment by one with each invoice issued. This creates an audit trail the IRD expects to see if your records are reviewed. The numbering system helps prevent accidentally issuing duplicate invoice numbers and makes it easier to track which invoices have been issued and paid. Some businesses include the year in the invoice number (2025-001), which is especially useful for long-term record-keeping and tax compliance.

Never alter an invoice after it's been sent, as this creates an incomplete audit trail that the IRD scrutinizes. Instead, issue a credit note for the original amount and send a new corrected invoice. If you overcharged, the credit note reverses the error; if you undercharged, issue a new invoice for the difference. Document the reason for the adjustment. This approach maintains transparency, protects your business records, and ensures your books stay accurate for tax purposes. GST-registered businesses must handle corrections this way to satisfy IRD requirements.

Contractors should invoice promptly after completing work to maintain consistent cash flow. Include detailed descriptions of work completed and hours or deliverables to help clients understand what they're paying for. Many contractors include payment methods (bank transfer, cash, card) to give clients options and speed up payment. Consider offering different invoice formats for different clients (e.g., monthly retainer invoices vs. per-project invoices). Keep copies of all invoices issued for tax record purposes—the IRD expects contractors to maintain complete records for at least seven years.