What is CII For FY 2025-26: Why we need it for Income Tax Calculation

Cost Inflation Index (CII) is yet to be announced for the Financial Year 2025-26, capital gains taxpayers await for the index.

Cost Inflation Index For FY 2025-26

Saloni Kumari | Jun 5, 2025 |

What is CII For FY 2025-26: Why we need it for Income Tax Calculation

What is CII For FY 2025-26: Why we need it for Income Tax Calculation

CII or Cost Inflation Index is considered to estimate the annual rise in an asset’s price due to inflation.

The process of Indexation determines that the cost of acquisition is adjusted against inflationary rise in the value of asset.

Table of Content
  1. Why we need it CII for Income Tax Calculation
  2. Sort of Assets Eligible for CII Adjustment
  3. Cost Inflation Index Table Upto FY 2024-25
  4. How is Indexation Applied for Long-Term Capital Assets?
  5. Calculation of Capital Gain using CII
  6. The Base Year Concept

Why we need it CII for Income Tax Calculation

Although after 23th July 2024, all the Long Term Capital Gains will be taxed at flat rate of 12.5% without any indexation benefit. But we still need Indexation Rates for calculation of Income Tax Because:

  • Capital gains taxpayers who have sold long-term assets prior to 23rd July need CII for Tax Calculation for FY 2025-26.
  • Due date for the first advance tax is 15th June 2025 which is nearing fast.
  • Also Long Term capital gain on immovable property sold after 22nd July 2024, but bought before 23rd July 24 to be taxed at more beneficial rate i.e. 20% with indexation or 12.5% without indexation, whichever is beneficial.

There will be no clarity on long-term capital gain consumption if no Cost Inflation Index is available.

Normally, CBDT notifies about the CII around April-May each year. Last year it was notified on May 24, 2024 for FY 2024-25. However, this year it is still pending.

Sort of Assets Eligible for CII Adjustment

CII can be applied upon certain items, such as:

  • Property
  • Land and Building
  • Unlisted Shares (Sold upto 22nd July 2024)
  • Debt Mutual Funds (Sold upto 22nd July 2024)

Cost Inflation Indexation cannot be applied to:

  • Listed Equity Shares
  • Equity Mutual Funds

Cost Inflation Index Table Upto FY 2024-25

Financial YearCost Inflation Indexation (CII)
2001-02100
2002-03105
2003-04109
2004-05113
2005-06117
2006-07122
2007-08129
2008-09137
2009-10148
2010-11167
2011-12184
2012-13200
2013-14220
2014-15240
2015-16254
2016-17264
2017-18272
2018-19280
2019-20289
2020-21301
2021-22317
2022-23331
2023-24348
2024-25363

How is Indexation Applied for Long-Term Capital Assets?

Indexation for long-term capital assets helps in adjustment of the purchase price of the asset with the use of CII to account for inflation, hence giving reduced taxable capital gain. The formulas are listed below:

Indexed Cost of Asset Acquisition = (CII for the year of asset transfer x Cost of asset acquisition) / CII for the year of asset Purchase or year 2001-02, whichever comes later

Indexed Cost of Asset Improvement = (CII for the year of asset transfer x Cost of asset improvement) / CII for the year of asset improvement.

Calculation of Capital Gain using CII

Reena purchased a house in FY 2001-02 for Rs 10 Lakh. She sells the same in FY 2023-24 on 25.07.2024 for Rs 40 Lakh. What will be the indexed cost of acquisition?

Solution:

Here, CII for year 2001-02 is 100; CII for year 2024-25 is 363. The indexed cost of acquisition = 10,00,000 * 363/100 = 36,30,000

Tax on Capital Gain @ 12.5% = Rs. 3,75,000

Tax on Capital Gain @ 20%

Capital Gain is 3,70,000 (40,00,000 – 36,30,000)

Tax = 74,000

Thus, the Maximum Capital gain tax will be limited to Rs. 74,000.

The Base Year Concept

In the relation of CII, the “Base Year Concept” is used to calculate inflation adjusted values of assets to fulfill taxation objectives.
The index value is set to 100 for the base year, for calculation purposes( 2001-2002).

If an asset is aquired before 2001-2002, for tax purposes its aquisition cost is determined as the higher of two values:

  • The actual cost of aquisition.
  • The Fair Market Value of the asset as of April 1, 2001.

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