The main function of AuSB is to review existing practices in Nepal and to develop Nepal Standards on Auditing (NSAs) so that these may be issued and regulated by ICAN. While formulating NSA(s), the AuSB considers the applicable laws, customs, usages, and business environments in Nepal. The NSAs are issued under the authority of the Chartered Accountants Act, 1997 (first amendment 2002). The AuSB issues guidance notes on the issues arising from the NSAs wherever necessary. AuSB reviews and revises the NSAs at periodical intervals or as per the need of the respective standards. The AuSB determines the broad areas in which the NSAs need to be formulated and the priority in regard to the selection thereof.
Auditing Standards Board (AuSB), Nepal, has so far formulated and issued the following standards & guidelines: