PwC has posted flat results of $2.6 billion revenue for financial 2020, retaining its place as Australia's largest consultancy despite the COVID-19 pandemic hitting business in its financial advisory and consulting business.

Chief executive Tom Seymour said the current business environment was "unpredictable and impacted by a health pandemic" but that he was confident PwC was resilient enough to emerge in a stronger position once the pandemic had passed.