How to automate your invoice approval workflows

As your company scales, invoice approvals become harder to control across teams, entities, and systems. Automation helps finance teams reduce manual AP work, keep approvals moving, and maintain real-time visibility without adding headcount.

To get you started, we've broken down the key parts of the process, the benefits, and what to expect from a good solution.

What is an invoice workflow?

An invoice workflow is the full journey a vendor invoice takes from receipt to payment. It covers capture, data extraction, validation, PO matching, approval routing, payment scheduling, ERP reconciliation and archiving. Invoice approval is one stage within this wider workflow, and usually the slowest.

What is an invoice approval process?

Every invoice needs an approval process to confirm it is accurate and legitimate before it is paid. A typical invoice approval process involves receiving an invoice from a vendor, reviewing it, approving it, processing it and paying it.

An effective process uses clear, automated approval workflows to maintain financial control and visibility. It also captures data automatically, which gives finance a more strategic view of spend.

The ten steps of a manual invoice approval process

1. Receive the invoice
2. Enter the invoice data manually
3. Check the invoice is accurate
4. Match the invoice to the goods receipt and purchase order
5. Correct any discrepancies
6. Email the invoice to the approver
7. Resolve the approver's comments or concerns
8. Send it back for approval
9. Pay the invoice
10. Update records to "paid"

The automated invoice approval process

1. Receive the invoice
2. Let OCR extract the data and code it to the right cost center, category and custom fields
3. Flag discrepancies automatically with two- or three-way matching
4. Keep all comments and questions on the invoice, in one platform
5. Pay the approved invoice
6. Update records automatically, with reconciliation through your ERP integration

Common invoice approval challenges

Manual approvals create three problems: slow sign-off, errors that slip through, and weak controls. The last one is the costliest. The ACFE's 2026 study covered 2,402 fraud cases in 143 countries. More than half involved either a lack of internal controls or an override of existing ones. The median scheme ran for 12 months before it was found. Organizations using proactive, automated monitoring saw median losses 53% lower (ACFE 2026; PBMares summary).

Lucy Payne, Head of Financial Control and Reporting at Astrid & Miyu, says: "Since moving to Payhawk, we've been able to close our accounts payable ledgers two days earlier than with our previous platform!"

What is accounts payable approval software?

Accounts payable approval software automates one part of the AP process: routing, reviewing and authorizing vendor invoices before they are paid. It replaces email chains and spreadsheets with rules. Each invoice goes to the right approver based on its amount, team, cost center or entity. The software chases approvers who don't respond and records who approved what and when.

AP approval software vs accounts payable automation software

AP approval software covers the sign-off step. Full accounts payable software covers the whole invoice workflow: capture, matching, approval, payment and reconciliation. Many finance teams start by automating approvals because that is where invoices stall. They later find that approval works best when it sits in the same platform as capture and payment, with no handover between tools.

What an approval matrix looks like

An approval matrix sets who signs off which invoices. A simple version:

AP approval software turns this matrix into rules that run on every invoice, so nobody needs to check the policy by hand.

Manual vs automated invoice approval workflows

How to automate your invoice approval workflow in 6 steps

1. Map your current process. List every step from receipt to payment, who does it, and where invoices wait longest.
2. Define your approval rules. Set rules by amount, department, cost center, entity or project. Start from your approval matrix.
3. Connect invoices to POs, receipts and budgets. Matching an invoice against its PO and goods receipt catches errors before an approver sees it.
4. Add fallback approvers. Name a backup for every step so invoices don't stall when someone is away or leaves.
5. Sync approved invoices with your ERP. Approved and paid invoices should post to your accounting system without rekeying.
6. Track approval times and exceptions. Measure how long each step takes and where exceptions come from, then adjust the rules.

Key features of an automated invoice approval workflow

OCR: Optical Character Recognition

Optical Character Recognition (OCR) makes capturing invoice data easy. Once an invoice is uploaded, OCR captures vendor details, dates, amounts and tax IDs automatically.

Payhawk's OCR reads documents in more than 60 languages and multiple alphabets. It extracts the data, fills in the relevant fields and matches invoices to purchase orders. This removes manual entry and the errors that come with it.

Nadia Vanuytrecht, HR and Operations Manager at Explose Agency, says: "Payhawk makes accounting activities easier; the OCR does part of my job by identifying duplicate invoices and populating the fields."

Automated two- or three-way matching

Two-way matching checks the vendor's invoice against the purchase order: vendor, quantities and prices. Three-way matching also checks the goods receipt (or receiving report), which confirms the items arrived as ordered. Both protect against errors, fraud and disputes. In Payhawk, you set discrepancy thresholds, and an invoice above the threshold triggers its own review workflow.

Customizable approval workflows

Customizable workflows let you sign off invoices in a way that fits your structure and policies. Payhawk's workflow designer supports:

• Amount thresholds: invoices under $500 go to the team manager; anything above goes to a senior approver.
• Team, cost center and custom field approvers: route invoices to whoever owns the budget.
• Entity-level workflows: each entity in a group can have its own approval rules.
• Fallback approvers: if an approver leaves or misses an invoice, it moves to a named backup.

Daniel Tang, Finance Manager at PinPoint Media, says: "Payhawk's workflow designer has improved the overall ease of use by being very intuitive. It has also improved the customisation functionality."

Sequential and parallel approvals

Some invoices need more than one approver. Sequential steps send an invoice to a team manager, then a department head, then finance. Parallel steps send it to several approvers at once, for example Legal and IT on a software contract. This shortens the time a multi-approver invoice takes.

Segregation of duties

The person who submits an invoice should not be the one who approves it. With segregation of duties switched on in Payhawk, sensitive actions wait for the required number of approvals. The person who started the action can't approve it. This is one of the simplest controls against the internal fraud the ACFE describes.

Real-time reconciliation

Look for a solution with strong ERP and accounting integrations. MDM Props used to spend 32 hours, or four working days, reconciling accounts manually. With Payhawk, it takes minutes. Once an invoice is approved and paid, your ERP updates in real time.

Automated notifications and reminders

Delays happen when you rely on manually notifying approvers. Automated notifications keep the requester updated on their invoice and remind approvers when an invoice is waiting.

In-app communication

When approval conversations happen in email or chat, they get lost. In Payhawk, you tag colleagues in comments on the invoice and get replies in your inbox, so the full history stays with the invoice.

Budget visibility

Real-time visibility of budget spend helps you make better allocation decisions. You can see what has been spent on invoices and what is committed for the coming months, by department or project.

Four benefits of automated invoice approval

Stronger controls and less fraud risk

Every invoice follows a predefined workflow, with segregation of duties and matching built in. That closes the gaps behind more than half of the fraud cases in the ACFE's 2026 study: missing internal controls and overridden ones.

Less manual work

Manual approval takes more time as invoice volumes grow. Automation gives your team that time back for forecasting, planning and analysis.

Better vendor relationships

With automated approvals, invoices don't sit in inboxes, so vendors get paid on time. OCR and matching catch data-entry mistakes before they turn into disputes.

More financial control and transparency

All spend is signed off by the right person, however complex your structure. You decide who can spend, how much, and how it gets approved, and changes to an invoice are logged.

What to look for in an automated invoice management software

Choosing invoice management software is a big deal because finding the best fit means you can unlock better spend visibility, improved control, and increased efficiency and productivity when processing invoices and other business expense types.

But how do you sort the wheat from the chaff? Here are a handful of things you should consider when researching your options.

Consider whether it integrates with your existing systems

Finding a solution that integrates with the rest of your tech stack will further cut down manual data entry and boost process efficiency. Why? Imagine accessing just one dashboard to view financial data instead of having to log into multiple systems, ERP, accounting, and spend management, to manually sync data.

Check if your software option integrates with market-leading software or allows you to set easy-to-use and modify templates. This way, you can take advantage of real-time reconciliations.

Make sure it supports you as you scale

As your organization scales, so does your staff pool, which means more employees to educate on your processes, more departments, and more supplier invoices to process. Waiting to automate your invoice approval process until it’s already too late will cause major problems and potentially stall your invoice management processes.

Robbie Hadfield, (ACCA-qualified accountant) and Senior Director of Product Engineering at Payhawk, says:

As your scaleup grows, CFOs face new challenges in expense management. Initially, formal processes may seem unnecessary in small teams where trust is high. However, as the company scales, managing expenses becomes more complex. With more people and more projects, the CFO often has to support the founder in shaking off 10 million approval threads and instead give accountability to the budget holders (without losing transparency and oversight). That’s where Payhawk comes in.

Make sure you choose a system that can grow and change with you. From customizable workflows to automatic policy compliance, it's time to future-proof and save yourself the hassle of changing to yet another platform in the future.

All-in-one spend management platform

Managing all your spend under one roof means no more juggling disconnected tools; instead, you can manage spend across all entities from the same platform. This gives finance managers and CFOs complete control and visibility over all types of spend, as well as access to accurate financial data means better budgeting, forecasting, and planning for future growth.

Nick Yanev, Marketing Manager at Eleven Ventures, says:

Payhawk saves me a surprising amount of time. All of our marketing tools, subscriptions, and platforms are connected to my Payhawk card, which makes it very easy to not think about the next payment or where and how I should pay.

The ability to schedule payments

It may seem like a small thing, but scheduling payments can improve financial planning, help you stay on top of upcoming expenses, and pay suppliers on time. You can also use the built-in amortization scheduler to defer transactions and spread out costs more effectively.

Exceptional supplier management features

Effective supplier management will help you keep your finances organized and improve oversight. With our solution, you can sync supplier data with your ERP, access a central database, track changes with audit logs, and categorize expenses — all in one place to streamline processes and stay in control.

Before you go

Automation helps streamline every stage of your invoice process, from data capture to approvals to reconciliation. But when it comes to invoice approvals, automation can help you build better supplier relationships, ensuring timely invoice payments, clearer financial visibility, and easier budget
planning.

Without automation, errors are harder to spot, duplicate payments are more likely, and manual corrections continue to drain time and resources.

Want to see all the components of our automated invoice approval workflow in action? Request a demo to learn more.