The bill for the income tax will come into force from April 1, 2026, when it will be the start of Tax Year 2026-27. Until March 31, 2026, the existing Income Tax Act, 1961 will remain in force. From April 1, 2027, professional exams like CA, CS, and CMA will be based only on the new law provisions. Evidently, knowledge of the new income tax bill 2025 highlights is important for all those impacted by the change, especially those who are engaged in financial planning or academic preparation.