Best accounts payable software for NZ businesses in 2026

Key takeaways

• Accounts payable (AP) software automates how you receive, approve, and pay supplier invoices – replacing manual processes that slow down your finance team and create errors.

• If you're paying overseas suppliers, you need an AP tool that handles multi-currency payments and foreign exchange (FX), not just invoice approvals.

• Platforms like Airwallex combine Bill Pay, global payments, and multi-currency accounts in one place – a practical fit if you need more than basic invoice automation.

If you're managing supplier payments across a spreadsheet, a shared inbox, and your bank's online portal, you're probably not the only one piecing together a manual process that takes far longer than it should. The right AP software can bring all of that into one place – so your invoices can get approved faster, payments go out on time, and your books can stay accurate without the manual clean-up at month-end.

What is accounts payable software?

Accounts payable software is a tool built around accounts payable automation – handling how your business receives, approves, and pays supplier invoices without manual effort. Think of it like a digital postroom for your bills – instead of invoices landing in someone's inbox and getting manually keyed into a spreadsheet, the software captures the details automatically, routes the invoice to the right person for approval, and then processes the payment.

Most AP platforms handle four core steps:

• Invoice capture: The software reads incoming supplier invoices using optical character recognition (OCR) – a technology that converts scanned documents into readable data – and pulls out key details like amounts, due dates, and supplier names automatically.

• Approval workflows: Invoices are routed to the right person or team for sign-off based on rules you set, so nothing gets paid without the correct authorisation.

• Payment processing: Once approved, the software either pays the invoice directly or syncs with your payment tool – covering local NZD payments and overseas transfers.

• Reconciliation: Payments are automatically matched back to the original invoice and synced with your accounting software, so your books stay accurate without manual data entry.

The benefits of AP software for New Zealand businesses

If you're running a business in New Zealand, there's a specific set of AP challenges that manual processes just can't keep up with. If you're paying suppliers in Australia, the US, or the UK, doing that manually means standard FX mark-ups apply – quietly eating into your margins across dozens of invoices each month.

Here's where the cracks tend to show:

• Approval bottlenecks: Without a structured workflow, invoices sit in someone's inbox for days – delaying payments and making it hard to track what's outstanding.

• Cash flow blind spots: Managing invoices across spreadsheets means you can't see in real time what's been approved, what's overdue, and what's coming due next.

• Audit gaps: If an invoice gets paid twice or to the wrong supplier, a manual process makes it difficult to trace who approved it and when.

The right AP software can tackle all of these – and for NZ businesses paying international suppliers, the ones that also handle the payment step, not just the approval, tend to make the biggest difference.

What is the best accounts payable software for NZ businesses?

The best AP software for your NZ business depends on what you need it to do. If you're mainly tightening up approvals and reconciliation within Xero, a purpose-built approval tool may be enough. But if you're also paying overseas suppliers regularly, you'll want a platform that handles the payment itself – including multi-currency transfers – without routing everything through your bank separately.

Here's how the leading options compare:

Airwallex

Airwallex goes beyond invoice approvals – it handles the actual payment too, including international transfers at rates close to the interbank rate. That makes our platform a strong fit you want to consolidate your AP process and your cross-border payments into one platform – rather than running a separate set-up just for paying overseas suppliers.

Here's what that looks like in practice:

• Bill Pay: Upload invoices, set approval rules, and pay local or international suppliers directly from your Airwallex account – without logging into your bank separately.

• Global Accounts: Open local banking details in 21 countries, accept payments from 70+ countries, and pay suppliers in their local currency, cutting out repeated conversions.

• FX & Transfers: Pay overseas suppliers at rates close to the interbank rate, with a transparent FX margin of around 0.5–1% above the interbank rate on most major currencies, avoiding the high costs that typically apply to international transfers. 

• Xero integration: Sync invoices and payments directly with Xero for real-time reconciliation – no manual exports or duplicate data entry.

• Approval workflows: Set multi-level approval rules so invoices above certain thresholds go through the right sign-off chain before payment.

ApprovalMax

ApprovalMax is purpose-built for approval workflow automation and integrates deeply with Xero, QuickBooks, and NetSuite. It doesn't handle the payment itself – ApprovalMax Pay is currently exclusive to UK businesses – so you'd typically pair it with a separate payment tool. For complex, multi-level approval requirements, it's one of the most configurable options available.

Features:

• Multi-level approval workflows: Build complex approval rules based on supplier, amount, department, or entity – without needing to code anything.

• Purchase order matching: Match approved purchase orders (POs) to incoming invoices before payment is authorised.

• Audit trail: Every approval, rejection, and delegation is logged with a timestamp, giving finance teams a clear record for compliance.

Tipalti

Tipalti is built for teams managing high volumes of international supplier payments each month. Its supplier self-service portal and tax compliance tools are well suited if you're managing a large, global supplier base – though the complexity may be more than you need if you're a smaller NZ business.

Here are the main features:

• Supplier self-service portal: Suppliers onboard themselves, submit invoices, and update their payment details without involving your AP team.

• Global payments: Pay suppliers in over 120 currencies across more than 200 countries and territories via multiple payment methods.

• Tax compliance tools: Collect and validate tax forms (including W-9, W-8BEN, W-8BEN-E, W-8EXP, W-8IMY, W-8ECI, and Form 8233 for US suppliers) automatically.

Lightyear

Lightyear focuses on invoice capture, coding, and approval workflows, and it's built with Xero and MYOB users in mind, which makes it a natural fit if you're already on either of those platforms. Like ApprovalMax, it handles the approval side of AP well but relies on a connected bank or payment platform for the actual payment step.

Key things it covers:

• Invoice capture and coding: Capture supplier invoices and code them to the right accounts and tracking categories to cut manual data entry.

• Approval routing: Set configurable approval workflows so invoices are reviewed and signed off before they're pushed through for payment.

• Xero and MYOB integration: Sync bills and approvals into your accounting system to keep payables up to date without rekeying.

Medius

Medius uses AI to automate invoice processing and flag potential fraud before payments go out. It's built for mid-sized to large enterprises, so the feature depth and pricing may be more than you need if you're a smaller NZ business.

Key features include:

• AI invoice capture: The system reads invoices in multiple formats and auto-codes them based on historical patterns.

• Fraud detection: AI flags suspicious invoices, duplicate payments, and unusual vendor activity before payment goes out.

• ERP integrations: Connects with SAP, Microsoft Dynamics, NetSuite, and other enterprise systems.

Coupa

Coupa covers the full purchase-to-pay cycle – from purchase requests through to invoice payment – and is built for large organisations with dedicated procurement and finance teams. Its compliance tools and spend analytics go well beyond basic AP automation, though that depth does come with more complexity – and a bigger price tag.

What it covers at the enterprise level:

• Invoice automation: Capture, code, and route invoices with AI-assisted matching against purchase orders and contracts.

• Compliance tools: Built-in controls including audit trails, role-based access, and segregation of duties.

• Spend analytics: Real-time dashboards show committed and approved spend across entities, categories, and suppliers.

Xero

Xero is an accounting platform with built-in AP features – it's not a dedicated AP automation tool, but it's a practical starting point if you have a relatively straightforward supplier payment process. Its AP capability extends significantly when paired with tools like ApprovalMax for approvals or Airwallex for global payments and FX.

Out of the box, here's what its built-in AP features cover:

• Bill management: Enter supplier invoices manually or forward them via email – Xero tracks what's due and when.

• Payment scheduling: Schedule single or batch payments directly from Xero using your connected bank account.

• Third-party integrations: Xero's AP functionality extends when paired with tools like ApprovalMax (approvals) or Airwallex (global payments and FX).

How to choose accounts payable software for your business

There's no single right answer – the best AP tool depends on your team size, how many suppliers you pay, whether you're paying internationally, and what accounting software you're already using. These are the questions worth working through before you commit.

Does it fit your accounting stack?

Many Kiwi businesses run Xero, so check whether the AP tool syncs directly and in real time, not just via a manual export. A live integration means your bills, approvals, and payments flow into Xero automatically, keeping your reconciliation current without anyone manually updating records. If you're on MYOB or NetSuite, check integration depth carefully, since not every AP tool supports those platforms equally well.

Can it pay overseas suppliers without high FX fees?

Some tools manage approvals only and hand off to your bank for the actual payment, which means standard FX rates apply. If you're regularly paying suppliers in Australia, the US, or the UK, look for a platform that handles both the approval and the international payment in one place. Airwallex does this through Bill Pay and FX & Transfers, so you don't have to absorb a mark-up every time you pay a foreign supplier.

Does it automate approvals and purchase order matching?

Approval workflows route invoices to the right person for sign-off based on rules you define – for example, any invoice over NZ$5,000 goes to the CFO before payment. Purchase order (PO) matching takes this further. Two-way matching checks that the invoice amount matches the original PO, while three-way matching also confirms that the goods or services were actually received. The more complex your approval requirements, the more important it is to choose a tool that can handle them without workarounds.

How strong are its controls and audit trails?

Role-based access controls determine who can enter invoices, who can approve them, and who can release payments – keeping those functions separate cuts the risk of fraud. Every action gets logged with a timestamp, so if a payment goes wrong, you can trace exactly what happened and who authorised it. If you're dealing with external auditors or have compliance obligations, this audit trail isn't optional.

What will pricing and implementation look like?

AP tools typically charge in one of three ways: a flat monthly subscription, a per-user fee, or a per-transaction fee. Enterprise platforms like Coupa usually require a custom quote and a longer implementation timeline – sometimes several weeks or months. Cloud-based tools built for Xero, like ApprovalMax or Lightyear, can typically be connected within a few days. Airwallex is free to get started, with fees based on transactions rather than a monthly subscription.

Why Airwallex is the right fit for your AP process

Most AP tools solve one part of the problem – approvals, or invoice capture, or reconciliation. What makes Airwallex different is that it also handles the payment, including international transfers, from the same platform. If you're paying overseas suppliers regularly, that means one less tool to manage and one less set of FX fees to worry about.

What makes Airwallex different

If you're paying suppliers in Australia, the US, or Europe, you're probably converting NZD multiple times a month – and potentially absorbing an FX mark-up every single time. Airwallex's Bill Pay lets you approve and pay those invoices directly from your account – in the supplier's local currency – without routing the payment through your bank separately.

Here's what you get on one platform:

• Bill Pay: Review, approve, and pay supplier invoices – domestic and international – directly from one platform.

• Global Accounts: Open local foreign currency accounts in 20+ countries so you're not converting money back and forth every time you pay a foreign supplier.

• FX & Transfers: Pay overseas suppliers at rates close to the interbank rate, rather than the marked-up rates that typically apply to international bank transfers, and in many cases save up to 80% in FX fees compared to traditional banks. 

• Corporate Cards and Expense Management: Issue cards to team members with spending limits and approval rules, with expenses flowing back into the same reconciliation workflow as your invoices.

• Xero integration: Payments and invoice data sync automatically, so your Xero records stay current without manual reconciliation.

Frequently asked questions

Is accounts payable software worth it for a small NZ business?

Yes – even if you're a small business, you can benefit from automating invoice approvals and payment tracking once you're managing more than a handful of suppliers each month. Entry-level options like Xero's built-in AP features or Airwallex Bill Pay don't require a large upfront investment to get started.

Can accounts payable software replace Xero?

No – AP software sits alongside your accounting tool, not in place of it. Most AP platforms sync with Xero to keep records accurate, but Xero is still where your general ledger, GST reporting, and financial statements live.

Can accounts payable software pay overseas suppliers in their local currency?

It depends on the tool. Some AP platforms handle approvals but hand the payment off to your bank, which means standard FX rates apply. Platforms like Airwallex handle both the approval workflow and the international payment in one place, at rates closer to the interbank rate.

How much does accounts payable software cost for a NZ business?

Pricing varies widely – subscription tools charge a flat monthly fee, while some platforms charge per user or per transaction, and enterprise platforms typically require a custom quote. Airwallex has no monthly fee on its Explore plan in New Zealand, with most costs tied to FX margins and transaction fees when you use the platform, rather than a separate AP subscription.

How long does it take to set up AP software with Xero?

Cloud-based tools built for Xero can typically be connected within a few days. Enterprise platforms with complex ERP integrations and custom approval workflows take longer – sometimes several weeks or months.

Does AI in accounts payable software replace finance teams?

No – AI automates repetitive tasks like data extraction, invoice coding, and PO matching, but your team still reviews exceptions, manages supplier relationships, and makes payment decisions. The goal is to cut manual work, not replace the people doing it.

Sources 

1. https://www.approvalmax.com/pricing

2. https://www.lightyear.cloud/en-nz/pricing/ 

3. https://www.xero.com/nz/accounting-software/accounts-payable/

4. https://tipalti.com/en-uk/pricing/

5. https://www.medius.com/pricing/

6. https://www.coupa.com/platform/

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.