IAA Online application 2022/2023– How to apply to Institute of Accountancy Arusha IAA [Step by step guide]. The much-awaited time has come, the 2022/2023 IAA admission season, and it is one of the most important times of the year for students who wish to pursue their undergraduate studies at the Institute of Accountancy in Arusha (IAA). IAA Online application 2022/2023– ...