Isha Purohit

Expert

Published on: Jun 24, 2026

Cost Inflation Index (CII) for FY 2023-24

The Cost Inflation Index (CII) is vital in calculating long-term capital gains tax in India. It is designed to account for the impact of inflation on the cost of acquiring an asset, allowing for an adjusted purchase price for tax purposes. Each year, the Central Board of Direct Taxes (CBDT) releases the CII values, and for the fiscal year 2023-24, a specific value of 348 has been set. This article discusses the Cost Inflation Index (CII) for FY 2023-24 and various concepts relating to the same.

Cost Inflation Index 

The Cost Inflation Index acts as a benchmark for determining the indexed cost of acquisition and improvement, which are critical in calculating the taxable capital gains from the sale of various assets, including real estate, bonds, and equity-oriented mutual funds. By indexing the purchase price, the CII helps to adjust for the effects of inflation on the asset's value over time, resulting in a more accurate representation of the actual gains realized. CII plays a crucial role in alleviating the tax burden on individuals and entities by adjusting the purchase price of an asset to account for inflation. This adjustment leads to a reduction in taxable capital gains and subsequently lowers the tax liability. This benefit is particularly advantageous for assets held over an extended period, as inflation can significantly impact the actual gains realized upon sale. For the fiscal year 2023-24, the CBDT has set the CII at 348. This means that for assets acquired before the financial year 2001-02, the purchase price should be multiplied by the CII of 348 to arrive at the indexed cost of acquisition. Similarly, CII is also used to calculate the indexed cost of improvement if significant renovations or enhancements were made to the asset during its ownership period. Cost Inflation Index Table from FY 2001-02 to FY 2024-25

Calculating Indexed Cost of Acquisition

To calculate the indexed cost of acquisition, one must multiply the original purchase price of an asset by the CII of the year in which it was acquired and the CII of the year of sale. The resulting indexed cost of acquisition reflects the inflation-adjusted purchase price. It forms the basis for determining taxable 1

Calculating Indexed Cost of Improvement

In cases where significant renovations or improvements were made to an asset during its ownership period, the indexed cost of improvement must also be determined. Similar to calculating the indexed cost of acquisition, the CII is applied to the cost of improvements made to arrive at the indexed cost of improvement. This ensures that the gains attributed to the enhancements are adjusted for inflation.

Significance of CII in Long-Term Capital Gains

The Cost Inflation Index (CII) plays a crucial role in calculating India's long-term capital gains tax. It allows for the adjustment of the purchase price of an asset to account for inflation, ensuring that the taxable gains accurately reflect the real gains made. By indexing the cost of acquisition and improvement, the CII reduces the tax liability by considering the erosion in the asset's value over time due to inflation. This indexation benefit encourages long-term investments, promotes fairness in tax assessments, simplifies tax calculations, and supports economic growth. The CII is a valuable tool for ensuring more equitable and accurate taxation of long-term capital gains, benefiting taxpayers and the overall economy. 

Concept of Base Year in Cost Inflation Index

In the context of the CII, the base year is a reference point against which the inflationary changes in the cost of assets are measured. It serves as a benchmark for indexing the purchase price of an asset and determining its adjusted value for tax purposes. The government typically fixes the base year or the tax authorities and remains unchanged for a certain period of time. The base year for the CII in India is 2001-02. The CII value for the base year is defined as 100. All subsequent CII values are calculated relative to this base year value. Using the base year as a starting point, the CII captures the changes in the cost of assets due to inflation over time. Each year, the CII value is revised and updated to reflect the inflationary impact on asset prices. The CII values for the subsequent financial years are derived by considering the inflation rates and economic factors prevalent during those periods. The base year concept in the CII allows for the adjustment of the purchase price of an asset to account for inflation since the base year. This enables taxpayers to calculate the indexed cost of acquisition and improvement by multiplying the original purchase price by the CII values of the year of acquisition and the year of sale or improvement.

CII for various financial years

CII for various financial years is available for reference from the table below.

Financial Year Cost Inflation Index (CII)
2001-02 100
2002-03 105
2003-04 109
2004-05 113
2005-06 117
2006-07 122
2007-08 129
2008-09 137
2009-10 148
2010-11 167
2011-12 184
2012-13 200
2013-14 220
2014-15 240
2015-16 254
2016-17 264
2017-18 272
2018-19 280
2019-20 289
2020-21 301
2021-22 317
2022-23 331
2023-24 348
In conclusion, the Cost Inflation Index (CII) for FY 2023-24 serves as a valuable tool for calculating long-term capital gains tax. By adjusting the purchase price of an asset for inflation, it provides a more accurate reflection of the actual gains made. The CII's impact on tax calculations can significantly reduce the tax burden for individuals and entities, especially for assets held over a longer duration. Familiarizing oneself with the CII and its implications is essential for effective tax planning and compliance.
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Frequently Asked Questions

Common questions about Cost Inflation Index FY 2023.

The Cost Inflation Index (CII) is a crucial factor in calculating long-term capital gains tax in India. It helps adjust the purchase price of an asset to account for the impact of inflation over time. This ensures that the taxable gains accurately reflect the real gains made by the investor, providing a more equitable taxation system.
To calculate the indexed cost of acquisition, you need to multiply the original purchase price of an asset by the CII of the year in which it was acquired and the CII of the year of sale. The resulting figure represents the inflation-adjusted purchase price, which is used to determine the taxable capital gains.
The CII plays a vital role in promoting long-term investments by reducing the tax burden on assets held for an extended period. By indexing the cost of acquisition and improvement, the CII ensures that investors are not penalized for the erosion in the asset's value due to inflation over time.
The base year for the CII in India is 2001-02, with a CII value of 100. All subsequent CII values are calculated relative to this base year. The base year serves as a reference point for measuring inflationary changes in the cost of assets, enabling accurate indexation of purchase prices.
If significant renovations or improvements were made to an asset during its ownership period, the CII is used to calculate the indexed cost of improvement. This ensures that the gains attributed to the enhancements are also adjusted for inflation, providing a fair assessment of the taxable gains.
The CII is primarily used for calculating long-term capital gains tax on assets such as real estate, bonds, and equity-oriented mutual funds. However, it may not be applicable to certain asset types or investment vehicles, and it's essential to consult with a tax professional for specific guidance.
The Central Board of Direct Taxes (CBDT) releases the CII values annually. For the fiscal year 2023-24, the CII has been set at 348, reflecting the impact of inflation on asset prices during that period.
No, the CII is specifically designed for calculating long-term capital gains tax. Short-term capital gains are taxed at the applicable income tax rates without any indexation benefits.
By providing indexation benefits and reducing the tax burden on long-term investments, the CII encourages individuals and entities to hold assets for longer periods. This promotes capital formation, economic stability, and overall growth by incentivizing long-term investment strategies.
The article provides a table listing the CII values for various financial years, starting from 2001-02. This table can be used as a reference for calculating indexed costs of acquisition and improvement for assets purchased or improved in different years.