Which of the following is not a function of public accounting firms?Transaction AdvisoryFinancial Planning & AnalysisAuditDue dilligence

To determine which option is not a function of public accounting firms, let's review each option briefly:

1. Transaction Advisory: This service typically involves providing consulting support during mergers and acquisitions, which is a function of public accounting firms.

2. Financial Planning & Analysis: This service focuses on budgeting, forecasting, and financial strategy. While some public accounting firms offer advisory services in this area, it is more commonly associated with in-house finance departments or financial consulting firms rather than traditional public accounting.

3. Audit: Auditing is one of the core functions of public accounting firms, where they provide an independent examination of financial statements to ensure accuracy and compliance with accounting standards.

4. Due Diligence: This process involves an investigation or audit of a potential investment or product to confirm all facts, which is also a service provided by public accounting firms, particularly in the context of transaction advisory.

Conclusion

Considering the roles and functions of public accounting firms, Financial Planning & Analysis is the choice that is least associated with public accounting firms compared to the others listed.