Invoice processing is one of the most common and most tedious tasks in any business. Invoices arrive by email, someone manually enters the details, routes them for approval, tracks the status, and logs everything in a spreadsheet or accounting system.
It’s slow, error-prone, and a poor use of your team’s time. Here’s how Power Automate can handle it instead.
The Typical Manual Process
Let’s look at what most companies do today:
An invoice arrives as an email attachment. Someone downloads it, opens the PDF, and manually types the vendor name, invoice number, amount, due date, and line items into a spreadsheet or ERP system. Then they forward it to a manager for approval, often via email. The manager might approve it immediately, or it sits in their inbox for days. Once approved, someone updates the status, schedules the payment, and files the document.
This process typically takes 15–30 minutes per invoice. Multiply that by dozens or hundreds of invoices per month, and you’re looking at a significant time drain.
The Automated Workflow
Here’s how this looks with Power Automate:
The flow monitors a shared mailbox or specific inbox folder. When an email with an attachment arrives (filtered by subject line, sender, or attachment type), the flow triggers automatically.
Power Automate's AI Builder includes a pre-built invoice processing model. It reads the PDF attachment and extracts key fields: vendor name, invoice number, date, total amount, line items, and more. No manual data entry required.
The extracted information is automatically written to a SharePoint list, Excel file, or Dataverse table, whatever your team uses for tracking.
Based on the invoice amount or department, the flow sends an approval request to the right manager via Teams, email, or the Approvals app. The approver can review the details and approve or reject with a single click.
Once approved, the flow updates the invoice status in your tracking system, sends a confirmation to the relevant parties, and optionally moves the file to an "Approved" folder in SharePoint.
If AI Builder can't extract certain fields with confidence, or if the invoice is rejected, the flow routes it to a human for review with all available data pre-filled.
What You Need to Get Started
To build this flow, you’ll need a Microsoft 365 subscription with Power Automate (included in most business plans), AI Builder credits (included in Power Automate Premium or available as an add-on), a shared mailbox or dedicated inbox for invoices, and a SharePoint list or Dataverse table for tracking.
Real-World Results
Companies that automate invoice processing typically see processing time drop by 70–80%, data entry errors virtually eliminated, approval cycle times cut from days to hours, and full audit trails with zero manual effort.
Beyond the Basics
The workflow above covers the fundamentals, but you can extend it further. You can connect the approved invoices directly to your accounting software via API. You can set up recurring reports that summarize monthly invoice volumes and amounts. You can build a Power BI dashboard that gives finance teams real-time visibility. The possibilities expand with each integration.
DIY or Done For You?
If you have someone on your team familiar with Power Automate, the basic version of this flow is achievable in-house. But if you want AI extraction, complex routing logic, error handling, and integration with your accounting system, that’s where a specialized partner makes the difference.
Want us to build this for you? Get in touch, we can have it running within a week.