Which organization is NOT involved in setting accounting or auditing standards?

The Internal Revenue Service (IRS) is primarily responsible for tax administration and enforcement in the United States. Its focus is on ensuring compliance with tax laws and managing tax collection rather than establishing accounting or auditing standards. While other organizations listed—such as the Public Company Accounting Oversight Board (PCAOB), the American Institute of Certified Public Accountants (AICPA), and the Financial Accounting Standards Board (FASB)—are directly involved in creating and overseeing accounting and auditing standards, the IRS’s role does not extend to these areas. The PCAOB oversees the audits of public companies, the AICPA sets professional and ethical standards for CPAs, and the FASB establishes financial accounting and reporting standards, thereby emphasizing the distinct role of the IRS in the tax domain rather than in standard-setting for financial reporting or auditing.