AAT level 3 is an intermediate level in the AAT accountancy qualification because it extends on the knowledge you have studied at level 2, and sets you up for level 4. A lot of students are concerned that level 3 is going to be a step up from level 2 and therefore, a difficulty level to study. But, the knowledge built from your level 2 studies will give you a countless kick start towards the Advanced Diploma in accounting qualification.