After Budget 2024, is indexation still worth it on your property?

What Budget 2024 Did to Indexation

In short: From 23 July 2024, indexation was removed for almost all assets, and long-term capital gains are now taxed at a flat 12.5 percent without indexation. The one important exception is land or building bought before 23 July 2024 by a resident individual or HUF: for that, you can choose the lower of 12.5 percent without indexation or 20 percent with indexation using the Cost Inflation Index.

For everything else, and for non-residents, indexation is gone and only the flat 12.5 percent applies. The CII for FY 2025-26 is 376.

For years, indexation was a central feature of capital gains tax. It let you inflate your purchase price using a government index, so you paid tax only on your real gain after accounting for inflation, not the full nominal gain.

The Finance Act of 2024 changed this fundamentally, lowering the headline long-term rate to 12.5 percent but removing the indexation benefit that had made the old 20 percent rate manageable for long-held assets. After a public backlash, the government softened the blow for property with a grandfathering choice, but only for that one asset class and only for resident owners who bought before the cut-off.

The calculator above reflects this new reality precisely. If you sell an eligible property, it computes your tax both ways, at 12.5 percent on the full gain and at 20 percent on the indexation-reduced gain, and tells you which is lower, because you are entitled to pay the smaller amount. If your case does not qualify, whether because the asset is not property, you bought after the cut-off, or you are a non-resident, it applies the flat 12.5 percent and explains why indexation does not apply, so you are not misled by outdated calculators that still assume the old rules.

When indexation still wins

For an eligible property, whether the indexation option beats the flat rate depends on how long you held it and how much prices rose. For a property held a long time, twenty years or more, inflation has pushed the indexed cost up substantially, shrinking the taxable gain so much that 20 percent of it is less than 12.5 percent of the full nominal gain.

For a property held only five to ten years, the indexed cost has not risen enough to overcome the higher rate, so the flat 12.5 percent usually wins. The calculator settles this for your exact numbers rather than leaving you to guess.

The crossover point, the holding period at which indexation begins to win, is not fixed; it moves with how fast your particular property appreciated relative to the index. A property in a high-growth area that far outpaced inflation may favour the flat rate even after fifteen years, while one that merely kept pace with inflation may favour indexation after ten. This is why a general rule is only a starting point and the actual computation is what decides your case.

How This Indexation Calculator Works

The tool applies the post-Budget-2024 rules in the correct order, so the result matches what you can legally claim. Understanding each step lets you check the figures.

Step one: the eligibility gate

The calculator first checks whether you qualify for the indexation choice at all. It requires three things together: the asset must be land or building, you must be a resident individual or HUF rather than a non-resident, and you must have acquired the property before 23 July 2024.

If any one of these is missing, indexation is off the table and only the flat 12.5 percent applies. This gate matters because many people assume indexation still applies broadly, when in fact Budget 2024 narrowed it to this single combination of conditions.

It is worth being deliberate about each condition. Asset type is usually clear, but residency is determined by your status for the relevant year under the tax rules, not merely by where you live, and the acquisition date is the date you actually acquired the property, which for an under-construction purchase or an inheritance may not be obvious. Getting each of these right is what determines whether the indexation column even appears in your result.

Step two: the two computations

For an eligible property, the calculator runs both options. Option A takes your full gain, sale price minus cost, and applies 12.5 percent plus 4 percent cess.

Option B computes the indexed cost by multiplying your purchase price by the ratio of the CII of the sale year to the CII of the purchase year, subtracts that from the sale price to get a smaller gain, and applies 20 percent plus cess. If you entered improvement costs, it indexes those separately using the improvement year’s CII. It then compares the two final figures and reports the lower one as your tax, along with the saving.

Cost Inflation Index Table for Key Years

The CII values below are notified by the CBDT and used in the indexation formula. The base year is 2001-02 with a value of 100. Confirm the current figures against the official Income Tax Department before filing.

The CII of 376 for FY 2025-26 was notified by the CBDT in July 2025 and means that, by the index, prices have risen 3.76 times since the base year. The full year-by-year table is built into the calculator’s dropdowns, so you simply pick your purchase and sale years and the correct values are applied. To work out the tax on the gain across your whole return, pair this with the income tax calculator.

Why the Rules Changed

Understanding why Budget 2024 changed indexation helps make sense of the rules you now navigate, and of why property alone kept a partial reprieve. The change was part of a broader effort to simplify capital gains taxation, which had grown complex with different rates, holding periods, and indexation treatments across asset classes. The government’s stated aim was a cleaner structure: fewer rates, uniform holding periods, and the removal of the indexation adjustment that made computation intricate.

In exchange for removing indexation, the headline long-term rate was cut from 20 percent to 12.5 percent. On paper this looks like a fair trade, and for many assets and shorter holding periods it genuinely reduces tax.

The problem arose for long-held assets, especially property and gold, where decades of inflation meant the old indexation benefit was substantial. Removing it while only cutting the rate to 12.5 percent could increase the tax on a long-held property, because 12.5 percent of a large nominal gain can exceed 20 percent of the small inflation-adjusted gain that indexation would have produced.

This is what triggered the public backlash. Property owners who had held for decades faced a sudden increase in their tax on sale, undermining the expectation they had built their plans around.

The response was the grandfathering choice: for land and building acquired before the 23 July 2024 cut-off, a resident could compute tax both ways and pay the lower. This protected existing property owners from being penalised on gains that had accrued under the old regime, while still moving new purchases and other assets to the simpler flat structure. It was a targeted compromise rather than a full reversal.

The result is the somewhat uneven landscape the calculator navigates. New property purchases, all non-property assets, and non-resident sellers live under the simple flat 12.5 percent.

Only the specific combination of pre-cut-off property held by a resident retains the old choice. This is why getting the eligibility exactly right matters so much: the rules are no longer uniform, and a tool that assumes indexation still applies broadly, as many older calculators do, will mislead most users. The value of computing your specific case correctly has arguably never been higher.

Making the Most of the Transition

For anyone holding property bought before the cut-off, the grandfathering choice is a genuine, time-limited advantage worth planning around. Because it applies to property acquired before 23 July 2024, the pool of eligible property only shrinks over time as those holdings are sold, and no new property will ever join it. That makes the choice a feature of the current generation of long-held property, and understanding how to use it well can save a substantial sum on an eventual sale.

The first planning point is simply to run the numbers before selling, rather than assuming. Because whether indexation wins depends on holding period and price appreciation, two owners selling similar properties can reach opposite conclusions, and the only way to know is to compute both options for your specific figures.

A seller who assumes the flat rate is always better, because the rate is lower, can overpay significantly on a long-held property where indexation would have won. The calculator exists precisely to remove this guesswork, and running it should be a routine step before any eligible property sale.

The second point is to combine the rate choice with the reinvestment exemptions where a further property purchase or bond investment is realistic. Because these exemptions reduce the gain itself, they interact with the rate choice: a partial reinvestment reduces the gain, and you then apply the lower of the two rates to whatever gain remains.

For a seller planning to buy another home anyway, sequencing the sale and purchase to qualify for the exemption, and then applying the better rate to any residual gain, can reduce the tax to a fraction of the headline figure. This is where a conversation with a tax adviser pays for itself.

The third point concerns record-keeping for the indexed cost. If you intend to use the indexation option, you must be able to substantiate the purchase price, the purchase date, and any improvement costs and their dates, because these feed directly into the formula and the department can ask for proof.

For older properties, gathering the purchase deed, any improvement bills, and, for pre-2001 acquisitions, a valuation as on 1 April 2001, well before the sale, avoids a scramble later. Good records turn the indexation option from a theoretical benefit into one you can actually claim and defend, which is the difference that matters when the return is filed and the department cross-checks your claimed cost against the documents you can produce.

Three Sales Where the Choice Mattered

Numbers make the choice concrete. Each scenario below shows a different holding period and outcome, so you can see when indexation wins and when it does not. Read the one closest to yours, then run your own figures above.

Exemptions That Can Cut the Gain Further

Choosing the lower of the two tax options is one lever, but it is not the only way to reduce your capital gains tax on property. The Income Tax Act offers reinvestment exemptions that can reduce or even eliminate the taxable gain, and they work alongside whichever tax option you choose. Knowing them can save far more than the difference between 12.5 and 20 percent.

The most widely used is the exemption for reinvesting in another residential house. If you sell a residential property and use the gain to buy or construct another residential house within the specified periods, the gain invested is exempt from tax, subject to conditions and an overall ceiling on very large gains.

There is a companion exemption for reinvesting the gain in specified bonds, such as those issued by certain infrastructure entities, within six months of the sale, up to an annual limit, with the bonds locked in for five years. These routes let you defer or avoid the tax entirely by putting the gain back into an approved asset rather than paying tax on it.

These exemptions are especially valuable because they apply to the gain itself, before the tax rate is even considered. So a seller who reinvests the whole gain in a new house may pay no capital gains tax at all, regardless of whether indexation would have helped.

The calculator focuses on the tax computation under the two options, which tells you the liability if you do not reinvest, but if a house sale is in prospect, it is worth exploring these exemptions with an adviser, because they can dwarf the saving from the rate choice. The right combination of reinvestment and the lower tax option can reduce a large liability to very little.

One more point concerns holding period, which determines whether your gain is long-term at all. Property is a long-term capital asset only if held for more than 24 months; sold within that period, the gain is short-term and taxed at your ordinary slab rate, which can be as high as 30 percent, with no indexation choice and no 12.5 percent rate.

So a quick sale is taxed far more harshly than a long-term one. This calculator addresses long-term gains, where the two options and indexation come into play, so make sure your holding period qualifies before applying its results.

Six Tips for Capital Gains on Property

Capital Gains Indexation at a Glance

Frequently Asked Questions

Related Calculators You May Find Useful