Britain's beancounters are facing tighter controls after a series of auditing scandals.
The Financial Reporting Council (FRC) said UK auditors will need to follow "significantly stronger requirements" than current international standards.
The UK's big four auditing firms - PwC, KPMG, Deloitte and EY - have all faced questions after the collapse of firms such as Carillion and Patisserie Valerie.
Auditors must now show greater work to "robustly challenge management's assessment of going concern, thoroughly test the adequacy of the supporting evidence, evaluate the risk of management bias and make greater use of the viability statement", the FRC said.
The revised standard also requires improved transparency with "a new reporting requirement for the auditor of public interest entities, listed and large private companies to provide a clear, positive conclusion on whether management's assessment is appropriate".