The document discusses the assessment procedure in income tax. It explains that individuals and entities with incomes above certain thresholds must file an income tax return by July 31 or October 31, depending on the type of assessee. There are different types of returns including regular returns, loss returns, belated returns, and revised returns. The tax authority may conduct self-assessment, scrutiny assessment, best judgment assessment, or income escaping assessment. Self-assessment involves the taxpayer calculating their own tax liability while scrutiny involves deeper examination of select returns.