Cost Inflation Index (CII) Calculator for Property
Index the cost of a property with the CII and work out the long-term capital gain and 20% tax.
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How to do it
- 1Step 1: Open Cost Inflation Index (CII) Calculator for Property and add your input
Type your numbers or text, add your file, or pick the options you need. Nothing is uploaded: everything stays in your browser.
- 2Step 2: What Cost Inflation Index (CII) Calculator for Property does
Index the cost of a property with the CII and work out the long-term capital gain and 20% tax.
- 3Step 3: Read the result and compare
The result appears at once. Change one value to see how the answer moves, then keep the figure that fits your case.
- 4Step 4: Copy or save it
Copy the result or download it. For an important decision, confirm it with the official source or an adviser.
About this tool
Choose the financial year you bought and the year you sold, and enter the purchase cost, improvement cost, sale price and selling expenses. The calculator indexes your cost with the CII, shows the indexed gain and the tax at 20% plus cess.
The formula
Indexed cost = cost × CII of the year of sale ÷ CII of the year of purchase. The CII values are notified by the government: for example 254 for FY 2015-16, 348 for FY 2023-24, 363 for FY 2024-25 and 376 for FY 2025-26.
Where to use it
Indexation applies to long-term gains on property bought before 23 July 2024 if you choose the 20% option; for other cases the 12.5% rate without indexation applies. Compare the two with the capital gains calculator.
Not included
Section 54 and 54EC exemptions, the base year of 1 April 2001 for older assets, and surcharge.
Worked example
A property bought for ₹30 lakh in FY 2015-16 (index 254) and sold in FY 2023-24 (index 348) for ₹70 lakh with ₹70,000 of expenses: indexed cost is ₹41.10 lakh, the gain ₹28.20 lakh and tax at 20% with cess about ₹5.87 lakh.
Tips for best results
Check every box before you rely on a result, because one wrong digit changes the whole answer. Use the exact figures from your payslip, bill, certificate or contract, and keep a note of the date you calculated. Rates, thresholds and rules change from time to time, so for tax, fees and legal matters treat the output as an estimate and confirm with the official source named on this page. You can run as many scenarios as you like; nothing is saved or sent, and refreshing the page clears the boxes.
Quick facts
- Category: UK & US
- Works in your browser, no sign-up, no upload.
- Your input stays on your device.
- Available in English.
- Content last reviewed:
- Official source: Income Tax Department India
Frequently asked questions
Which year counts for the purchase?
The financial year in which you bought, written as the year it starts.
Is the CII fixed?
It is notified every year. The table here goes up to FY 2025-26.
What if I bought before 2001?
Use the fair market value on 1 April 2001 as the cost, and index from 2001-02.
Is indexation still available?
Only for resident individuals and HUFs for property bought before 23 July 2024.