This document outlines various components used to calculate salary income for tax purposes in India. It discusses the tax treatment of basic salary, dearness allowance, bonuses, commissions, provident fund contributions, interest earned on provident funds, fully taxable allowances, partly taxable allowances, exempted perquisites, taxable perquisites, profit in lieu of salary components like leave travel concession and gratuity, and deductions that can be claimed to arrive at taxable salary. The document provides formulas and thresholds for determining the taxable and non-taxable portions for many of these components.