The Cost Inflation Index (CII) for the tax year 2026-2027 has been released almost one month after the deadline for paying advance tax for the first quarter. Cost Inflation Index matters the most especially for individual who have sold a property acquired on or before July 23, 2024, and sold it between April 1, 2026, and June 15, 2026, and want to use indexation benefits to pay a lower net tax.
The due date for advance tax for Q1 of the tax year 2026-2027 was June 15, 2026, and the Central Board of Direct Taxes (CBDT) notified CII number for the tax tear on July 16, 2026.