Income at the big four consulting firms jumped 17 per cent to hit $9.91 billion last financial year, representing 70 per cent of the total revenue earned by Australia’s 100 biggest accounting firms and cementing their dominance in the local market.

They also increased headcounts across the board, bolstering staff numbers who were billed out to clients but not partners by about 26 per cent collectively, according to The Australian Financial Review Top 100 Accounting Firms list for 2022.