EY global revenues hit $57bn as AI demand fuels Big Four giant’s growth

Big Four giant EY global revenues of $57bn (£43bn) rose nearly 5 per cent on the previous financial year.

EY-Parthenon’s strategy arm led the firm’s overall growth across all services lines, with a 7 per cent increase. Tax grew by 6 per cent, consulting by over 4 per cent, and assurance by 3 per cent.

The Big Four giant said sales from AI services skyrocketed over the financial year by nearly 50 per cent due to client demand.

This comes as EY said it invested $448bn over 2026 in training and development, with a focus on AI. 

Earlier this year, EY had to withdraw a study it had done on loyalty rewards programmes after a probe revealed it contained apparent AI hallucinations and fake footnotes.

Commenting on the result, Janet Truncale, EY global chair and chief executive, said: “Growth in demand for AI-related services reflects that shift, as organisations increasingly prioritise approaches that combine technology with deep industry knowledge, trusted relationships and human judgement.”

“This fiscal year’s results demonstrate the strength of bringing EY teams and alliance partners together to accelerate value creation and turn disruption into sustained growth,” she added.

EY’s gap with Deloitte

Last month, its competitor, Deloitte, reported a rise in its global revenue, hitting $74.5bn (£56.37bn).

This increase came despite its technology and transformation division slipping lower, as the consultancy sector comes under pressure from AI. 

Elsewhere in the UK, in the results we have so far, PwC’s UK revenue grew to £4.365bn, up two per cent on the previous year.

While Deloitte UK revenue for the year ended 31 May 2026 for the UK arm was up 2 per cent to £5.81bn, with growth across all businesses.