The document provides an overview of tax deductions as defined by the Income Tax Act, detailing various sections that allow individuals and businesses to claim deductions on expenses, thereby reducing their taxable income. It contrasts tax exemptions and deductions, illustrating their impacts, eligibility criteria, and examples, while also highlighting the advantages of tax deductions, such as lowering overall tax liabilities. Case law examples are included to emphasize legal interpretations related to deductible expenses.