The Income Tax Act 2025, which came into effect on April 1, 2026, aims to modernize India's taxation system by simplifying tax submission and enhancing compliance clarity. This new Act consists of over 536 sections and 23 chapters, introducing a uniform Tax Year and focusing on digital compliance. Key sections that taxpayers should monitor include Sections 11, 22, 126, 156, 202, and 263, which cover deductions for charitable donations, property income, health insurance, tax rebates, and filing requirements. For instance, Section 22 allows homeowners to claim deductions on property loans, while Section 126 encourages health insurance coverage with higher deduction limits. The new tax regime, defined under Section 202, is now the default for most taxpayers, although the old regime remains available for those who prefer it. Additionally, NRIs are required to report foreign assets strictly, with serious penalties for non-compliance. Enhanced basic exemption limits for senior citizens and a higher TDS threshold on interest to ₹1 lakh are also notable changes. Taxpayers are advised to seek guidance from tax professionals to navigate these complexities effectively.