Simplifying expense approvals at Microsoft with AI-powered risk assessment

Every manager has experienced it: The dread of approving a stack of expense reports while critical work stands idle. This tedious process has even garnered its own internal descriptor: “Approval fatigue.”

Here at Microsoft, we’re no different.

Complaints about the time and effort required to approve expense reports have been consistent from managers across our organization.

“We continuously heard feedback from our leaders that they were spending too much time approving expense reports,” says Michael He, a senior business program manager in the Greater China Region. “They didn’t know where the potential risk actually was, so they had to review everything in detail.”

At Microsoft Digital, the company’s IT organization, we’ve taken this challenge on by introducing an AI-powered Intelligent Risk Engine.

“The Intelligent Risk Engine cuts through complexity, pointing approvers straight to the expenses that warrant attention. This clears up the noise that has been driving review fatigue, especially at quarter’s end.”

Sangay Wangmo, Microsoft Digital experience director, Middle East and Africa

With this new tool, we shifted approvals from uniform, manual scrutiny to automated, risk-based decision making. This enables faster reviews, reduced cognitive load, and improved compliance outcomes.

“The Intelligent Risk Engine cuts through complexity, pointing approvers straight to the expenses that warrant attention,” says Sangay Wangmo, a Microsoft Digital experience director for our Middle East and Africa region. “This clears up the noise that has been driving review fatigue, especially at quarter’s end.”

Looking ahead, we plan to expand the tool to include automated approvals for low-risk cases, creating a more scalable, intelligent, and efficient process. This will ease the pain for our managers and allow them to focus on their strategic work.

Manual approvals in a complex compliance environment

Across our global enterprise, we handle nearly a million expense reports annually. In regions such as Central and Eastern Europe, the Middle East, and Africa (CEMA), our expense approval processes are shaped by diverse regulatory requirements in many different countries.

“As organizations scale, managers naturally have more direct reports, which means more approvals to process. At the same time, accountability for all compliance still sits with the manager, which adds pressure.”

Kethan Parbhoo, general manager, Central and Eastern Europe, Middle East, and Africa

To take one example, the Middle East and Africa—featuring multiple subregions, languages, and local policy nuances—presents a complex challenge for expense management. Applying a consistent risk lens to every case is difficult.

To ensure they stay compliant, leaders often review expense reports in detail, including verifying receipt accuracy, matching invoice data, and checking supporting information (like attendee lists). This level of review requires substantial time and attention, particularly for managers with large teams who receive a high volume of submissions. This becomes even more time-consuming as groups grow.

“As their organizations scale, managers naturally have more direct reports, which means more approvals to process,” says Kethan Parbhoo, a general manager in the Central and Eastern Europe, Middle East, and Africa region. “At the same time, accountability for all compliance still sits with the manager, which adds pressure.”  

The current tool, MS Expense, which was useful in a pre-AI environment, doesn’t provide an optimal user experience. The process was repetitive and depended heavily on manual validation. Existing tools provide limited support for prioritizing risk or simplifying these tasks, resulting in a similar effort being applied to both low- and high-risk expenses. 

As a result, leaders experience increased workload, slower approval timelines, and continued exposure to potential compliance gaps, despite careful review. 

The four top-level internal pain points of the old approval process can be summarized as: 

• Not knowing where the risk is 
• Approvals take too much time, especially at quarter’s end 
• Too much effort is spent on low-risk, routine reviews 
• Issues are found too late, triggering audits and resubmissions after the fact

The Intelligent Risk Engine is helping us address all of these in a unified, cohesive way.

“The system leverages a combination of AI-based risk checks and policy-driven risk checks. This produces a quantifiable baseline score that allows for easier comparison and risk assessment.”

Eric Carnrite, principal product manager, Travel and Expense

AI-assisted risk scoring embedded in MS Approvals 

The Intelligent Risk Engine that our team developed integrates with the existing MS Approvals system, shifting from volume-based checks to risk-based decisioning. We embed this analysis directly into the workflow.

The risk engine evaluates each expense report against multiple criteria, including receipt matching (which leverages AI and optical character recognition), spending patterns, and policy alignment. It assigns a risk score (1-100) and a risk level—1 at the low end and 5 at the high end—and then highlights specific areas that might require attention. 

“The system leverages a combination of AI-based risk checks and policy-driven risk checks,” says Eric Carnrite, a principal product manager for the Travel and Expense team. “This produces a quantifiable baseline score that allows for easier comparison and risk assessment.”

Expense risk score table

The tool also explains why something has been flagged. This allows approvers to quickly understand where to focus their review and to catch issues early, rather than after the fact. 

“AI is effectively doing the initial assessment that a human would otherwise have to do,” Parbhoo says. “It gives you a strong signal, so you can decide quickly where deeper review is needed.” 

With our new model, low-risk expenses can be reviewed and approved with minimal effort, while higher-risk items receive closer examination. It just makes sense to prioritize our work this way.

“Previously, a $10 coffee receipt required the same level of scrutiny as a $300 invoice, which doesn’t make sense at scale,” Wangmo says. “Leaders are forced to treat everything the same, even when the risk level is clearly different.”

Early returns indicate significant improvements. These include:

• Immediate productivity gains, as approvers stop reviewing all expenses manually
• Reduced rework and late‑stage audit findings 
• Stronger governance at scale, without adding headcount or introducing new manual processes

“It pulls the three parts together: Employees, approvers, and auditing and compliance. It will ultimately make it more proactive for all parties involved, rather than reactive—making sure the whole flow of the expense process is more meaningful.”

Michael He, senior business program manager, Greater China Region

Future direction: Expanded automation and standardization 

This kind of AI-powered technology will eventually allow us to pull everything together in one unified system, meeting the needs of all the major players in the expense management process.

“It pulls the three parts together: employees, approvers, and auditing and compliance,” He says. “This will ultimately make it more proactive for all parties involved, rather than reactive—making sure the whole flow of the expense process is more meaningful.”

And we’re not done innovating. The current risk engine implementation establishes a foundation for further automation, and that’s where we’re headed.

One planned enhancement is the automatic approval of low-risk expenses, subject to compliance approval. This could produce significant savings and greater efficiency across our organization.

“With auto-approvals, we’re not talking about a nominal amount,” Carnrite says. “At this point, we’re targeting up to 75 percent of expense reports being automatically reviewed and approved. This could save us around 150,000 to 200,000 person-hours a year—and that’s at the manager and director level.”

We’ve also added advanced optical character recognition (OCR) technology into our expense tools. This now allows for automatic categorization of expenses, so employees don’t have to enter the category manually for each item.

“The end goal is an AI agent that can proactively create an expense report for you and ask you to review it. You would just validate it and move it forward, instead of building it from scratch.”

Salvador Segura, director of business programs, Field Capability Services

Additional future improvements could include expanded use of AI for data validation, receipt processing, and identification of inconsistencies across submissions. Over time, the goal is to support a standardized approval framework that adapts to regional differences while maintaining consistent risk evaluation and reducing manual workload.

At the next level, we’re hoping to use AI to eventually fully automate the creation of expense reports as well. This would be essentially the Holy Grail for this function.

“The end goal is an AI agent that can proactively create an expense report for you and ask you to review it,” says Salvador Segura, a director of business programs in Field Capability Services. “You would just validate it and move it forward, instead of building it from scratch.” 

It’s this kind of AI-powered work environment that we’re pushing for at Microsoft Digital as we play a leading role in our company’s ongoing Frontier Firm journey.