How to automate accounts payable

If your accounts payable (AP) process involves chasing paper invoices, manually keying data and wrangling email chains for approvals, you’re not alone. For many New Zealand businesses, AP is still a surprisingly manual affair. 

The good news? Automating accounts payable is no longer just for large corporates. Digital tools have made it genuinely accessible for Kiwi SMEs and the results speak for themselves: faster payments, fewer errors and a much clearer picture of your financial position at any given moment.

Here’s what you need to know.

What is accounts payable automation?

Accounts payable automation means using digital tools to handle the end-to-end process of receiving, processing, approving and paying supplier invoices, without relying on manual effort at every step.

Think of it as a system that captures invoices automatically, routes them to the right approvers, matches them to purchase orders and triggers payment. And all with minimal human intervention.

Manual AP is slow by design. Someone has to open the invoice, enter the data, find the right person to sign it off, file the paperwork and then remember to actually pay it on time. When things go wrong, your business is at risk. You might end up making duplicate payments, owing late fees, straining supplier relationships or even get into legal hot water.

Automation removes those friction points and gives your team time back for work that actually matters.

Why invoice data accuracy is everything

At the heart of any AP automation system is invoice data. If that data is messy, the whole process breaks down.

This is why modern AP tools use AI to extract information from invoices automatically, whether they arrive by email, supplier portal or scanned document. The system reads the header details (supplier name, date, invoice number, total) and the line items, validates them against your records. It may also flag anything that looks off.

Getting that data right from the start is what allows the rest of the process to run smoothly.

The main pain points of manual accounts payable

Before we dive into solutions, it’s worth naming the problems clearly. Manual AP typically comes with:

Slow processing times

Invoices can sit in inboxes for days before anyone even looks at them. Chasing approvals manually adds more delays and when payment terms are missed, supplier relationships suffer.

High error rates

Manual data entry is prone to mistakes or typos. These errors are costly to catch and even more costly when they slip through.

Limited visibility

Without a centralised system, it’s hard to know at any moment what you owe, what’s been approved, or what’s overdue. That makes cash flow forecasting complicated.

Compliance and fraud risks

Manual processes make it harder to maintain audit trails or catch suspicious patterns, like duplicate invoices or payments to unfamiliar vendors.

How an automated AP workflow actually works

A well-designed AP automation system handles the full invoice lifecycle. Here’s what that looks like in practice:

Invoice capture

Invoices arrive through multiple channels: email, supplier portals, scanned documents or electronic formats like EDI and XML. Your automation system captures all of them and feeds them into a single workflow.

Data extraction and validation

AI extracts the key data from each invoice and validates it against your supplier records, purchase orders and contracts. Any discrepancies trigger an exception flag, rather than passing through unchecked.

Matching

For PO-based invoices, the system performs two-way matching (invoice against PO) or three-way matching (invoice against PO and goods receipt). Non-PO invoices are routed for manual coding and approval..

Approval routing

Instead of forwarding PDFs by email, the system routes invoices to approvers based on defined rules: amount thresholds, department, cost centre or supplier type. Approvers get notified and can accept or query with one click. Reminders are sent automatically if someone hasn’t acted within a set timeframe.

Payment and reconciliation

Approved invoices are scheduled for payment based on due dates and your cash flow position. Digital payment options including batch EFT, virtual cards and integrated banking keep the process streamlined. Payments are automatically matched back to invoices in your accounting system, so reconciliation happens in the background.

Reporting and dashboards

AP automation gives you real-time visibility into invoice volumes, approval cycle times, outstanding liabilities and payment performance. You can track key metrics like cost per invoice, touchless processing rates and average approval time.

Where Employment Hero fits in

Employment Hero‘s payroll and HR platform integrates directly with leading accounting software used by New Zealand businesses, including Xero. This means your employee-related payables, such as payroll, expense reimbursements and contractor payments, flow seamlessly between systems.

When your HR, payroll, and financial data all live in connected systems, you eliminate the double-handling that slows teams down. Employment Hero helps you build that connected foundation, so your finance team spends less time reconciling and more time on strategic work.

The processes worth automating first

Not every AP task needs to be automated at once. If you’re just getting started, focus here:

• PO and non-PO invoice matching tends to deliver the fastest ROI, since it removes the most manual effort and is where errors are most costly.
• GL coding and tax classification can be automated using AI that learns your coding patterns over time, reducing the burden on your finance team.
• Approval routing and reminder nudges are a great opportunity. Automating these alone can cut your average approval cycle from days to hours.
• Duplicate detection and fraud checks run quietly in the background but provide significant protection, especially as transaction volumes grow.

How to get started: a practical roadmap

You don’t need to overhaul everything at once. A phased approach works well for most businesses.

Start by auditing your current process. Document how invoices arrive, how they’re processed, who approves what and how long each step takes. Collect baseline metrics that measure the process. You’ll need these numbers to make the business case and recognise success.

Next, clean up your data. Before connecting any new system, ensure your supplier master data is accurate, your GL codes are consistent and your approval hierarchies are documented. This groundwork makes implementation far smoother.

Then, shortlist solutions that integrate with your existing accounting software and ERP, with particular attention to AI-driven invoice capture, approval workflow flexibility and out-of-the-box reporting. Run a controlled pilot with a subset of suppliers and invoice types before rolling out more broadly.

Train your team before go-live, not after. Approvers especially need to understand the new workflow and feel confident using it. Gather feedback during the pilot and adjust before scaling.

Finally, monitor your KPIs consistently. Touchless rate, cycle time, cost per invoice and exception rate are your core measures of success. Review targets regularly and keep iterating.

What AP automation is actually worth

The numbers vary by organisation but the direction is consistent. Automated invoice processing typically costs a fraction of what manual processing costs per invoice. Cycle times that once took weeks can compress to days or even hours. And finance teams that once spent most of their time on data entry can redirect that effort toward analysis and planning.

Beyond cost savings, the real value is in control. You know what’s owed, to whom and when. You can make better decisions about payment timing to protect cash flow. And your audit trail is clean and always accessible.

Start small, but start now

If you’re waiting for the perfect moment to automate your accounts payable process, that moment is now. You don’t need a big team or a big budget to see meaningful results. Start with an audit, pick a couple of high-volume pain points and get a pilot running with a handful of suppliers.

Employment Hero can help you build the connected HR and payroll foundation that sits beneath a healthy financial operation. When your employee data, payroll and finance systems talk to each other, everything runs smoother. Your team gets to focus on the work that actually moves your business forward.

Ready to see how Employment Hero can support your operations? Book a free demo today.

The information in this article is current as at 28 May 2026 and has been prepared by Employment Hero Pty Ltd (ABN 11 160 047 709) and its affiliates (Employment Hero). The views expressed in this article are general information only, are provided in good faith to assist employers and their employees, and should not be relied on as professional advice. Some information is based on data supplied by third parties. While such data is believed to be accurate, it has not been independently verified and no warranties are given that it is complete, accurate, up to date or fit for the purpose for which it is required. Employment Hero does not accept responsibility for any inaccuracy in such data and is not liable for any loss or damages arising directly or indirectly as a result of reliance on, use of or inability to use any information provided in this article. You should undertake your own research and seek professional advice before making any decisions or relying on the information in this article.