There are four different parts of the CPA exam. They  are: Audit and Attestation (AUD) Financial Accounting and Reporting (FAR) Regulation (REG) Business Environment and Concepts (BEC) Each part of the exam lasts for four hours. You must complete the four parts to qualify for the CPA licensure.  The four skill levels tested in the CPA exam sections are: 1. Remembering and understanding 2. Application 3. Analysis 4. Evaluation