5 Best Small Business Invoice Software in New Zealand (2026)

Key takeaways:

• The best invoicing software for NZ businesses should offer automated reminders, GST tracking, and professional templates.

• Top-rated platforms in 2026 include Xero for full accounting, Solo for sole traders, and Airwallex for global payment flexibility.

• Airwallex solves the "high fee" pain point by allowing you to embed multi-currency payment links directly into your invoices, saving on FX and processing costs.

New Zealand is a nation of business builders, but that doesn’t make it easy to grow a business. In Q4 2025 there were over 744,000 total registered businesses in New Zealand, but in the same period, there were 889 liquidator appointments (a 34% YoY increase)¹. Whether you are a freelance designer in Ponsonby or a growing eCommerce brand in Christchurch, your ability to get your business on sound financial foundations is paramount. And this includes being paid on time.

In this guide we’ll take you through the top small business invoice software in New Zealand so you can do just that.

What is small business invoice software and why do you need it?

At its core, small business invoice software automates the billing process, tracks overdue payments, and integrates with bank feeds to simplify reconciliation. Gone are the days of manually typing out Word documents and saving as PDFs.

We are currently seeing a massive shift toward AI-powered automation in the NZ SME sector. Modern software now reads your previous billing patterns, predicts when a client might be late, and sends a nudge before you even have to think about it. This technology doesn't just save time; it reduces the psychological burden of being a debt collector for your own business.

By centralising your billing, you ensure that every invoice sent is IRD-ready, meaning your year-end tax season becomes a breeze rather than a breakdown.

The best small business invoice software in NZ

Here are the top 5 platforms currently helping New Zealand businesses manage their billing and get paid on time.

In-depth: Features of the best invoice software in NZ

Airwallex

While many know Airwallex for global accounts, its invoicing capabilities make it a powerhouse for businesses with international clients. Airwallex offers New Zealand businesses a flexible invoicing feature through its all-in-one platform. You can create and manage invoices for different entities and currencies, track and manage overdue invoices, and let customers pay in 160+ payment methods.  

The funds settle into your Airwallex wallet and can be paid out locally, skipping the slow, expensive traditional banking network to get your money there faster.

Fees: Invoicing and billing available via our Grow account for NZ$99/month. This also gives you a multi-currency Global Account, Corporate Cards, FX and transfers, payment gateways, a Yield account to grow your funds, and more.

Pros

• Native multi-currency support with like-for-like settlement 

• Integrates seamlessly with Xero and QuickBooks

• 160+ local payment methods

• Part of an all-in-one financial platform with a range of financial products and tools for your business.

Cons

• Not a full "accounting" platform

• Requires integration for direct GST filing

Xero NZ

A household name, Xero was founded right here in New Zealand and remains a dominant force. It provides professional invoices and local bank feeds that are directly integrated with the IRD and major NZ banks.

Fees: Plans start around NZ$35/month, but the Grow plan, recommended for self-employed and growing businesses, starts at NZ$83/month.

Pros

• Generates IRD-ready invoices with eInvoicing capabilities

• Expansive app marketplace including NZ-specific payroll

• Accountant-approved and widely used across the country

Cons 

• Can become expensive for very small businesses as you add more features and people

• Multi-currency only available on higher tier plans

Solo NZ

Designed specifically for sole traders, freelancers, and contractors, Solo strips away the complex accounting jargon that usually requires a degree to understand. It assumes you are a one-person band and focuses on what matters most to you: visibility.

Fees: The Basic plan is available from NZ$15/month and Premium is NZ$27/month.

Pros: 

• Simple user interface

• Handles income tax and ACC estimates automatically

• Includes NZ bank feeds and expense receipt capture

• Premium option is competitive on price compared to other competitors

Cons

• Limited functionality for businesses that plan to hire employees

• Fewer third-party integrations than larger competitors

MYOB Business

MYOB can be a choice for businesses with complex payroll needs or those who prefer a more traditional, robust accounting structure. It offers excellent local support and direct IRD filing, making it a reliable partner for established SMEs.

Fees: MYOB Business Lite plans start at NZ$35/month, but the Pro plan is suggested for SMEs, and this is available for NZ$56/month. 

Pros

• Effective payroll integration and business insights

• Offers offline access and dedicated local support

• Reliable direct filing with the IRD

• Built-in AI features

Cons

• Steeper learning curve compared to other modern platforms

• Fewer integrations compared to the Xero ecosystem

Conta

For those just starting a side-hustle or a small freelance gig, Conta is an invoicing-first option. It is designed for those who need to look professional and track their billables without the overhead of complex bookkeeping.

Fees: NZ$0 for Basic plan, NZ$16.49/month to unlock more features with Premium.

Pros

• Completely free for basic users with simple templates

• Includes a GST calculator and payment tracking

• High speed and simplicity for quick billing

Cons

• Limited features compared to full-suite competitors

• No direct IRD integration for automated filing

Features to look for in NZ invoicing software

When choosing your tool, don't just look at the price tag. Consider how the software will affect your daily operations:

Tax readiness

Staying compliant with Inland Revenue requirements doesn't have to be a headache. The right invoicing software should automatically calculate GST at the correct rate (15% in New Zealand⁶) and generate reports that align with IRD filing requirements. Look for platforms that keep up with tax regulations, so you're always operating with the latest compliance standards.

Payment options

Modern invoicing software should let customers pay instantly via their preferred payment method. Solutions like Airwallex payment links make it easy for customers to settle invoices in just a few clicks – no need for manual bank transfers or cheque processing. The faster your customers can pay, the faster money lands in your account, improving your working capital and reducing the time spent chasing payments.

Automation

Time is money, especially for small business owners juggling multiple responsibilities. Your invoicing software should work for you in the background, handling recurring invoices for retainer clients or subscription services without manual intervention. Automated payment reminders are equally important – late payments can cripple cash flow, but chasing clients manually is time-consuming and awkward. Look for software that can send friendly, professional reminders at scheduled intervals (say, 3 days before due, on the due date, and 7 days after), freeing you to focus on growing your business rather than administrative tasks.

eInvoicing

Electronic invoicing (eInvoicing) is rapidly becoming the standard for business-to-business transactions. Unlike traditional PDF or email invoices, eInvoices are structured data files that can be sent directly between accounting systems, eliminating manual data entry and reducing errors. By choosing software with eInvoicing capability now, you're future-proofing your business and positioning yourself to work seamlessly with future partners, customers and clients.

Support and security

Your invoicing software holds some of your most sensitive business data – client information, payment details, and financial records. This makes security non-negotiable. Look for platforms that use bank-level encryption (at least 256-bit SSL), offer two-factor authentication, and comply with international security standards like PCI DSS for payment processing. Equally important is access to reliable customer support, especially if you're not technically savvy. 

Why businesses choose Airwallex

While traditional platforms focus on the "record-keeping" of an invoice, Airwallex focuses on the payment. We act as your global financial infrastructure, helping you scale without the traditional hurdles of cross-border commerce.

• Get paid faster in NZD (and beyond): Send invoices in NZD or other major currencies and let customers pay in a few clicks, reducing friction and time-to-cash.

• Boost conversion with preferred ways to pay: Offer your customers the methods they trust: major cards, Apple Pay, Google Pay, PayPal, and leading BNPL options like Afterpay/Clearpay, all from a single invoice link.

• Offer a local experience to global customers: Combine NZD invoices with global cards and wallets so international customers can pay in familiar methods without you needing multiple providers.

• Improve cash management with NZD settlement: Receive funds into your Airwallex multi-currency wallet, hold them, or convert them at FX margins you control (starting at 0.5% above interbank rates).

• Reduce operational overhead: Plug Airwallex into tools like Xero so your invoicing, payment collection, and reconciliation all sit in one connected flow.

Frequently asked questions

Is invoicing software compulsory in NZ? 

No, it is not compulsory, but it can help you with collecting customer payments and for meeting IRD record-keeping requirements to ensure your GST is calculated accurately.

Can I use free invoicing software for GST? 

Yes, you can, but you must ensure it correctly generates the taxable supply information IRD requires for GST.

How do I get paid by overseas clients? 

Using a Global Business Account allows you to provide local bank details to clients in the US, UK, EU, and beyond, making it as easy for them to pay you as it is to pay a local.

Sources

1. https://www.companiesoffice.govt.nz/insights-and-articles/latest-company-statistics/ 

2. https://www.xero.com/nz/pricing-plans/ 

3. https://www.soloapp.nz/pricing/ 

4. https://www.myob.com/nz/pricing 

5. https://conta.com/nz/pricing/ 

6. https://www.ird.govt.nz/gst

The information in this article is based on our own online research. Airwallex was not able to manually test each tool or provider. The information is provided for educational purposes only and a reader should consider the specific requirements of their business when evaluating providers. This research is reviewed annually. If you would like to request an update, feel free to contact us at [[email protected]]. Airwallex (New Zealand) Limited is registered with the New Zealand Financial Service Provider Register (FSP No. 1001602) to provide a range of financial services in New Zealand.