4 key ways AI changed the Big Four in 2025

Tech Insider : Business, Technology
Big Four logos
Deloitte, KPMG, PwC, and EY make up the Big Four professional services firms.

Emanuele Cremaschi//Getty Images, Craig T Fruchtman/Getty Images, Joan Cros/NurPhoto,, Joan Cros/NurPhoto via Getty Images.

Consulting had a year of huge change in 2025. Here's how the Big Four firms performed this year.

Tech Insider : Business, Technology
Deloitte logo
Deloitte recorded 4.8% annual revenue growth in its most recent financial year.

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The Big Four consulting firms are embedded in Big Tech. Here's who audits each of the Magnificent 7 companies.

Tech Insider : Business
EY logo
EY, Deloitte, KPMG, and PwC make up the Big Four professional services firms.

Joan Cros/NurPhoto via Getty Images

Big Four promotions depend more on politics and your boss having your back than your performance, researchers found

Tech Insider : Business, Politics
The EY offices in London in 2018.
A new study suggests that Big Four promotions are driven more by internal politics and the extent to which a manager is willing to advocate for their team members.

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EY staff are using AI to tell them how AI is going to change their jobs

Tech Insider : Business, Style
EY
EY's internal AI tool is guiding staff on how their jobs are going to change because of AI.

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KPMG wants junior consultants to ditch the grunt work and hand it over to teams of AI agents

Tech Insider : Business
KPMG

Craig T Fruchtman/Getty Images

Big Four giant EY is all in on AI — and it's paying off

Tech Insider : Business
EY office
EY's overall revenue was up 4%, while AI-related consulting revenues climbed 30%.

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Deloitte is giving the Australian government a partial refund after it used AI to deliver a report with errors

Tech Insider : Business, Technology
Deloitte

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Consulting firms face a talent 'exodus' as senior leaders seek more influence and a faster pace

Tech Insider : Business
Deloitte office worker

Photo by Daniel LEAL / AFP) (Photo by DANIEL LEAL/AFP via Getty Images

I quit my first job out of college at PwC after a year. Working at the Big Four has pros — but one con was a dealbreaker.

Tech Insider : Business, Environment
Left: Sofia Javier, Right: A PwC office building with the logo on the side of the building
Javier left PwC to join Comcast as a senior financial analyst.

Courtesy of Andrew Pham; NurPhoto/Getty Images.

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