Combined Graduate level Examination is conducted for the post of Senior Assistant/Income Tax office/defense officer and Inspector of Income Tax. The recruitment process is conducted by SSC in two tier. The 1st Tier process of recruitment is a written examination paper which contains questions on Numerical Ability, reasoning, general knowledge (modern and ancient) and English. After qualifying the 1st Tier, you then attend the 2nd Tier which has questions on higher Mathematics level and English. The 3rd Tier is documents verification or a personal interview.