Understand India's income tax slabs for FY 2024 -25 (AY 2025-26). Compare Old and New Tax Regimes, including tax rates, deductions, rebates, and other key differences for individuals. Compare the new and old tax regimes for FY 2024 -25 and AY 2025-26, with revised slabs, deductions and exemptions. Learn how to calculate your income tax , surcharge and cess under the new tax regime . Compare the new default tax regime (Section 115BAC) and the old regime . Understand the differences in tax rates, surcharge, and a comprehensive list of allowed vs. disallowed deductions.