Invoice automation with Power Automate and AI Builder

A company’s finance department is one of the areas that concentrates the most repetitive, error-prone, and time-consuming tasks. Examples include manual data entry, invoice classification, accounting reconciliations, and report generation. When carried out manually or with disconnected tools, all of these operations create inefficiencies that directly impact decision-making.

The good news is that Microsoft 365 and Power Platform offer a set of complementary solutions. SharePoint Online, Power Automate, AI Builder, Azure Document Intelligence, and Power BI automate the entire invoice lifecycle and provide a consolidated financial view in real time. In this article, we explain all the benefits. Keep reading.

Eliminating Manual Processing and Significantly Reducing Errors

Every invoice that arrives — whether on paper, by email, or in various formats — must be read and processed manually. Someone has to extract the relevant data (vendor, amount, cost centre, due date) and enter it into an ERP or spreadsheet.

This process is slow, monotonous, and above all, highly susceptible to human error. An extra zero, a wrong cost centre, or a misread date can generate accounting discrepancies that take hours to locate and correct.

By combining Power Automate, AI Builder, and Azure Document Intelligence, the process is automated end to end. The system reads the invoice and extracts key data using custom-trained AI models. It then validates it against the defined accounting rules and sends it directly to the recording system — with no manual intervention or transcription errors.

Intelligent, Centralised Document Management with SharePoint Online

Any invoice automation process needs a solid document repository as its foundation. SharePoint Online is the piece that ensures all invoices, regardless of their origin or type, are stored in an organised, accessible, and secure way.

With SharePoint you can:

Create document libraries structured by invoice type, vendor, fiscal year, or any other criterion relevant to your business.
Apply automatic metadata at the point of upload, so each document is tagged and easily retrievable.
Set retention and deletion policies that ensure regulatory compliance without manual management.
Control access at a granular level — who can view, edit, and approve each type of document.

As a cloud platform within the Microsoft 365 ecosystem, documents are available from any device at any time, always with the highest security guarantees.

Automating the Approval Workflow with Power Automate

Beyond data extraction, an invoice must go through an internal journey before it is recorded and paid — verification, approval by the responsible party, sending to the accounting system, and more. In many companies, this flow relies on email chains and informal processes that create bottlenecks and make tracking difficult.

Power Automate allows you to design and implement automatic workflows that orchestrate this entire process. Here’s how:

When an invoice arrives in SharePoint, the system automatically notifies the person responsible for reviewing it.
If the amount exceeds a defined threshold, the flow escalates the approval to the appropriate hierarchical level.
Once approved, the data is sent directly to the ERP or accounting system without manual intervention.
If the invoice has an issue (unexpected amount, unrecognised vendor, incomplete data), the flow generates an alert and places it in a review queue.

The result is a fully traceable invoicing process. At any point, you know the status of each invoice and who has performed each action.

Artificial Intelligence Applied to Document Classification with AI Builder

The variety of invoice formats is one of the main challenges when automating invoice processing. Every vendor presents their invoices differently — layouts vary, data structures change, and information appears in different positions from one document to another.

AI Builder, Microsoft’s artificial intelligence platform integrated into Power Platform, solves this problem through document processing models custom-trained on your company’s real invoices. These models learn to identify and extract the relevant fields regardless of the invoice format.

AI Builder can also automatically apply accounting classification rules — for example, assigning the correct cost centre, determining the type of expense, or identifying whether the invoice corresponds to an existing purchase order. Tasks that previously required hours of manual work are now executed in seconds, with far greater accuracy.

Real-Time Financial Visibility with Power BI

Automating invoice processing is essential. However, it is not enough if it is not accompanied by a clear and up-to-date view of the company’s financial position. This is where Power BI comes in.

Thanks to native integration with SharePoint Online, the ERP, and other corporate data sources, Power BI makes it possible to build financial dashboards that offer:

A consolidated view of expenses by vendor, department, cost centre, or period, updated automatically.
Key financial KPIs available in real time, such as approval-pending balance, overdue invoices, and budget variance.
Automatic alerts when an indicator exceeds defined thresholds, enabling immediate action.
Executive reports generated automatically, eliminating the need to manually consolidate data from multiple sources.

The finance director no longer depends on manual processes to access the information they need, and can focus their time on analysis and strategic decision-making.

Scalability and Adaptation to Each Company’s Specific Needs

One of the great strengths of solutions built on Microsoft 365 and Power Platform is their scalability. These are not closed products, but platforms on which solutions can be built and tailored to the specific circumstances of each organisation.

Whether a company manages tens or thousands of invoices per month, the system adapts to the volume and evolves with the business. Whether new vendors are added or activity expands to new regions or billing types, there is no need to change tools or architecture.

Furthermore, as part of the Microsoft 365 ecosystem that many companies already use, team adoption is fast and does not require learning entirely new tools.

Success Story: Dunas Capital Transforms Its Financial Efficiency with Microsoft 365 and Power Platform

With all the benefits described above in mind, here is a real-world case that illustrates the impact of this transformation. Dunas Capital is one of Spain’s leading independent asset management and fixed income funds. With a team of 60 professionals and more than €1.8 billion in assets under management, they trusted Itequia to transform their financial efficiency.

The challenge: Despite already working with Microsoft 365, teams had not received specific training and the platform was underutilised. Invoices were processed manually — data extraction in Excel, manual application of accounting classifiers, entry into systems — a slow, repetitive process with a high risk of errors. Additionally, generating consolidated financial reports required considerable manual effort, preventing agile decision-making.

The solution: Itequia designed and implemented two complementary solutions based on Microsoft 365 and Power Platform.

Intelligent invoice process automation. A document repository was structured in SharePoint Online, automatic workflows were implemented with Power Automate, and AI models were developed with AI Builder to extract and classify data from multiple invoice types and regions.
Financial dashboards with Power BI for a clear, consolidated, and up-to-date view of Dunas Capital’s operations. KPIs are updated automatically and support strategic decision-making.

The results: a significant reduction in manual work, improved accuracy of accounting data, and financial visibility that previously required hours of manual consolidation and is now available in real time.

→ Read the full Dunas Capital success story here.

Hire Your Financial Automation Service with Itequia

At Itequia, we have more than 15 years of experience in the technology sector and are experts in implementing Microsoft 365 and Power Platform solutions. Our team will design a personalised, scalable solution tailored to the needs of your finance department.

We will help you achieve:

Invoice process automation. From receipt to accounting entry, with no manual intervention.
Intelligent document repository. All your invoices organised, tagged, and accessible with SharePoint Online.
Automatic approval workflows. Eliminating bottlenecks and providing complete tracking of every invoice with Power Automate.
AI-powered classification. Custom-trained models for your documents with AI Builder.
Real-time financial visibility. Executive dashboards with Power BI connected to your data sources.
Error and processing time reduction. Less manual work, fewer errors, and more time for high-value tasks.

Automating the Complete Invoice Cycle with Power Automate and AI Builder