The PayWren Blog

Practical advice on GST, invoicing, and tax for NZ freelancers and contractors.

InvoicingGSTNZ Tax14 April 2026 · 7 min read

How to create an IRD-compliant invoice in NZ (free template)

Everything your NZ tax invoice must legally include: GST number, invoice number, correct date fields. Includes a free invoice template you can use today.

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ToolsInvoicing
8 min

Xero vs PayWren: which is better for NZ contractors?

An honest comparison of Xero and PayWren for New Zealand freelancers and sole traders: price, features, and what actually matters when you're contracting.

10 April 2026Read →
GSTNZ Tax
9 min

GST invoicing requirements NZ 2026: the complete guide

Updated for 2026: every GST invoicing rule NZ businesses need to follow, including thresholds, record-keeping requirements, and common compliance pitfalls.

7 April 2026Read →
Getting PaidNZ Business
8 min

How to chase late-paying clients in NZ (without damaging the relationship)

A step-by-step escalation process for NZ freelancers, from polite reminder to Disputes Tribunal, with email templates for each stage.

3 April 2026Read →
NZ TaxContractors
7 min

IR330C vs IR330: understanding contractor tax forms in NZ

What the IR330C and IR330 forms are, who needs which one, how schedular payment rates work, and what happens if you get it wrong.

28 March 2026Read →
GSTNZ Tax
5 min

How to calculate GST in NZ: adding, removing, and common mistakes

The exact formulas for adding GST to a price and removing it from a GST-inclusive total, plus the situations where getting it wrong creates real problems.

8 June 2026Read →
Getting PaidNZ Business
6 min

How to calculate late payment interest in NZ (and when you can charge it)

When NZ freelancers and contractors can charge interest on overdue invoices, how to calculate the amount, and what your contract needs to say before you can enforce it.

8 June 2026Read →
ContractorsNZ Business
7 min

How to set your contractor day rate in NZ (and actually make enough)

A step-by-step method for calculating your contractor day rate in NZ: target income, billable days, taxes, ACC, overhead, and a free calculator to check your numbers.

8 June 2026Read →
ExpensesNZ Tax
6 min

NZ vehicle logbook: what IRD requires and how to claim correctly

How to keep a vehicle logbook that satisfies IRD, calculate your business use percentage, and avoid the most common mistakes when claiming vehicle expenses.

8 June 2026Read →
GSTNZ Tax
8 min

Which GST rules apply to me? A plain-English guide for NZ freelancers

Work out whether you need to register for GST, what rate applies to your services, and how the rules change depending on who your clients are and where they're based.

8 June 2026Read →

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