A PwC firm must not provide tax planning or structuring advice to an audit client if the effectiveness of the tax advice depends on a particular accounting treatment or presentation in the financial statements and:
a)
The audit engagement team has reasonable doubt as to the appropriateness of the accounting treatment or presentation under the relevant financial reporting framework, and
b)
The outcome or consequences of the tax advice will have a material effect on the financial statements on which the firm will express an opinion.
A PwC firm must not act as an advocate for an audit client before a public tribunal or court in the resolution of a tax dispute if the amounts involved are material to the financial statements on which the firm will express an opinion. The firm is permitted, however, to continue to advise the client in relation to the matter under dispute.
Other restrictions apply – see GIP. Additional guidance on the above and other services can be found in the Statements of Permitted Services (SOPS).