Testing Windows
The CPA Examination is offered two out of every three months of each quarter. The months when testing is available are called "testing windows." The testing schedule is as follows:

Candidates can sit for one or more parts of the exam during a test period but may not take a specific part of the exam more than once during that same test period. Each State Board can establish its own policy on the time frame in which a candidate must pass all four parts of the exam. The AICPA has recommended that the period be 18 months.