Big Four giant EY’s global revenue has hit $57bn (£43bn), up 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 stalwart said sales from AI services skyrocketed over the financial year by nearly 50 per cent due to client demand.

The firm said it invested $448m over 2026 in training and development, with a focus on AI. 

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.

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

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

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.