Payment terms are the commercial rules that say when money is due after you issue an invoice or accept an order. They usually combine a timing rule (for example payment within fourteen calendar days of the invoice date, net thirty, or payment on the twentieth of the month following invoice) with how you will accept funds (bank transfer, card, or agreed finance). Put those rules in your quote or engagement letter first, then repeat the same due date logic on every invoice and statement. Match GST taxable supply information with Inland Revenue guidance when you are registered. If you negotiate changes, confirm them in writing before extra work ships. This guide is practical education only and is not legal advice.
Hon Andrew Bayly, Minister for Small Business and Manufacturing, said on the Beehive website that there is a major problem with large market players imposing long payment terms and routinely paying invoices late, which is why transparent habits at small suppliers still matter even while wider policy shifts (Beehive.govt.nz, Government to address business payment practices).
Strategy
Strong terms are clear before work begins, consistent on every tax document, and realistic for how your buyer actually pays. Pair written terms with reminders that stay factual once the due date passes.
Terms agreed up front set the reference date everyone uses when you later argue about lateness. Business.govt.nz recommends talking about cost estimates before you start work and keeping invoice details clear on what you supplied, when you supplied it, the cost, due date, and payment terms (Business.govt.nz, Getting paid on time).
Business.govt.nz lists invoice basics that include the invoice number, date sent, due date, description of goods or services, amount payable, payment details, and a buyer reference such as a purchase order number (Business.govt.nz, Getting paid on time). GST-registered sellers still layer Inland Revenue taxable supply rules on top of those habits.
Net labels count from the agreed starting point in your contract, often invoice date or end of month. When nothing else is written, courts look at conduct and prior dealings, which is why traders spell out the anchor date in plain words on both the quote and the invoice.
Ministry of Business, Innovation and Employment explains that the Business Payment Practices Act Repeal Act 2024 repealed the Business Payment Practices Act 2023 and revoked the Business Payment Practices Regulations 2023, so large entities are no longer required to collect and disclose payment-practice information as under that earlier regime (Ministry of Business, Innovation and Employment, The Business Payment Practices Act 2023 has been repealed, last updated 08 March 2024). Policy continues through other channels such as voluntary codes and faster government-agency payment initiatives referenced on Beehive.govt.nz.
From 1 April 2023 Inland Revenue expects taxable supply information that supports GST return figures, including timing concepts tied to when consideration is due or received on taxable supplies (Inland Revenue, How taxable supply information for GST works, last updated 31 Mar 2026). Keep commercial due dates on your invoice aligned with the accounting story you tell IRD.
Sources
These references come from Business.govt.nz, Inland Revenue, and MBIE. They anchor habits for SMEs rather than replacing tailored legal advice.
Business.govt.nz advises that if invoices are not paid on time you should follow up as soon as possible, keep early reminders short and polite, and use a defined sequence such as an email reminder two business days after the due date plus a follow-up phone call if there is no response after a week (Business.govt.nz, Getting paid on time).
Business.govt.nz, Getting paid on time (2026). View source
Ministry of Business, Innovation and Employment states that the Business Payment Practices Act Repeal Act 2024 repeals the Business Payment Practices Act 2023 and revokes the Business Payment Practices Regulations 2023 (Ministry of Business, Innovation and Employment, The Business Payment Practices Act 2023 has been repealed, last updated 08 March 2024).
Ministry of Business, Innovation and Employment, The Business Payment Practices Act 2023 has been repealed (2024). View source
Workflow
Negotiate and document first, mirror the same logic on invoices and reminders second, and align GST evidence third. Adjust for buyers who need purchase orders or eInvoicing.
Capture price, scope, currency in New Zealand dollars unless otherwise agreed, deposit expectations, and the payment timing anchor such as invoice date, delivery date, or twentieth of month following. Confirm contacts for accounts payable.
Shorter nets improve liquidity but can deter large corporates whose procurement rules still assume thirty-to-sixty-day cycles. Document exceptions for rush jobs or staged construction claims.
Follow Business.govt.nz guidance that invoices should include due dates, payment details, and PO references when buyers issue them. Offer electronic banking details that match your verified trading name.
Tip: Cross-check payment instructions whenever fraud-prevention alerts circulate in your sector.
When you must supply taxable supply information, ensure totals, GST lines, and timing references stay consistent with IRD tools for supplies above two hundred dollars and above one thousand dollars (Inland Revenue, How taxable supply information for GST works, last updated 31 Mar 2026).
Mirror Business.govt.nz advice: email roughly two business days after the due date, escalate politely, then phone if silence continues for about a week. Log promises and new payment dates.
Export ageing buckets from your accounting tool, prioritise material balances, and brief a solicitor before you send demands that threaten recovery costs you cannot substantiate.
Checklists
Use these lists before you issue the first invoice under a new engagement and whenever you renew annual contracts.
Pitfalls
Most pain comes from verbal-only agreements, mismatched metadata, or chasing debts without notes.
Problem
Buyers forget informal promises and accounts payable defaults to their master vendor terms.
Fix
Send a one-paragraph confirmation after each verbal change and attach the revised quote snapshot.
Problem
Procurement systems sometimes encode sixty-day terms even when your PDF says payment in fourteen days.
Fix
Resolve conflicts before delivery or explicitly note the variance with written sign-off.
Problem
Unilateral penalties may be contested under fair trading and contract rules depending on facts.
Fix
Only enforce charges already drafted with competent advice and consistent maths.
Problem
Incorrect taxable supply information can delay both payment and your buyer's GST claims.
Fix
Issue an adjustment or replacement document quickly, then restart the reminder cadence from the corrected baseline.
Plain-language answers for contractors, consultants, and office managers who set payment terms every week.
They are the agreed rules that say when payment falls due, how you calculate that date from invoice or statement anchors, and how buyers may pay. Write them into quotes, engagement letters, and invoices so everyone shares one timeline.
You must express when payment is due in a way accounts payable can programme. Many firms still describe thirty calendar days from invoice date, shorter nets for small suppliers, or twentieth-of-month schedules. Match whatever your signed paperwork promises.
Commercial due dates sit beside IRD taxable supply information such as seller GST numbers, correct dollar totals, and buyer identifiers above one thousand dollars. Keep narrative dates aligned with the GST story you report (Inland Revenue, How taxable supply information for GST works, last updated 31 Mar 2026).
Automatic statutory penalties like those overseas regimes advertise do not replace your contract. Only pursue fees or interest your agreement or competent advice supports, and document calculations transparently.
Business.govt.nz suggests email roughly two business days after the due date and a phone follow-up if there is still no response after about a week, keeping early reminders polite (Business.govt.nz, Getting paid on time).
Ministry of Business, Innovation and Employment confirms the repeal of the Business Payment Practices Act 2023 and its regulations, so the earlier mandatory disclosure cycle no longer applies (Ministry of Business, Innovation and Employment, The Business Payment Practices Act 2023 has been repealed, last updated 08 March 2024). Watch Beehive.govt.nz updates for voluntary benchmarks instead.
Business.govt.nz highlights faster, more accurate routing through eInvoicing networks. Buyers who accept Peppol-style delivery can shorten processing delays compared with PDFs sitting in generic inboxes.
Bring cash-flow impact data, reference standard procurement contacts, and propose staged invoices. Beehive.govt.nz releases from Hon Andrew Bayly describe pressures from long payment cycles, which helps explain why procurement teams sometimes respond to structured asks backed by documentation.
Invoice Mama publishes How to follow up on unpaid invoices in New Zealand at /guides/nz/how-to-follow-up-on-unpaid-invoice-nz with reminder scripts aligned to Business.govt.nz guidance. The general unpaid invoice follow-up guide at /guides/how-to-follow-up-on-unpaid-invoices targets United States conventions.
Construction Contracts Act 2002 payment schedules interact with general invoice terms. Speak with a construction lawyer before you borrow templates from other jurisdictions.
Keep learning
Layer IRD invoice rules with GST registration guidance and contractor workflows.
Tiered taxable supply fields, GST numbers, buyer identifiers, and twenty-eight day requests.
Read guideIRD-ready records, reminder cadence after due dates, and escalation patterns once balances age.
Read guideHow April 2023 rules combine invoices, contracts, and buyer-created records.
Read guideSixty thousand dollar turnover tests and obligations once GST begins.
Read guideCommercial invoices that blend IRD expectations with trade-specific billing habits.
Read guideFrom agreed terms to cleared funds
Invoice Mama helps you carry consistent net periods, due dates, and payment instructions from quotes through to branded invoices so buyers see the same story at every step.