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Case law › Concepts › After a demerger you hold two shares, and the old cost has to be cut in two

After a demerger you hold two shares, and the old cost has to be cut in two

I received shares in the resulting company on a demerger. Is that taxable, and what is my cost in each holding?

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I received shares in the resulting company on a demerger. Is that taxable, and what is my cost in each holding?

The issue of shares by the resulting company is not a transfer at all, because s.47(vid) takes it out. Your original cost is then split: s.49(2C) gives the resulting company's shares a share of the old cost in the proportion that the net book value of the assets transferred bears to the net worth of the demerged company, and s.49(2D) reduces the cost of the original shares by the same amount. Nothing is taxed until you sell.

This is an explainer, not a judgment. It states the law in our own words, which is exactly why it needs checking. Everything below was written from the sources listed at the foot of this page, and no chartered accountant has yet signed it off. Read the source before you rely on it in a reply or an appeal.

A demerger produces a shareholder-level event that looks like a windfall and is not one. Section 47(vid) provides that nothing in s.45 applies to "any transfer or issue of shares by the resulting company, in a scheme of demerger to the shareholders of the demerged company if the transfer or issue is made in consideration of demerger of the undertaking". So the shares that appear in the demat account on the record date are not taxable receipts, and the shareholder has no capital gain to declare.

What happens instead is that a single cost base becomes two. Section 49(2C) fixes the cost of the new holding: "The cost of acquisition of the shares in the resulting company shall be the amount which bears to the cost of acquisition of shares held by the assessee in the demerged company the same proportion as the net book value of the assets transferred in a demerger bears to the net worth of the demerged company immediately before such demerger." Section 49(2D) then takes that amount out of the old holding: "The cost of acquisition of the original shares held by the shareholder in the demerged company shall be deemed to have been reduced by the amount as so arrived at under sub-section (2C)." The two costs add back to the original cost, so nothing is created and nothing is lost.

The denominator is defined and it is not what an analyst would use. The Explanation provides that "For the purposes of this section, 'net worth' shall mean the aggregate of the paid up share capital and general reserves as appearing in the books of account of the demerged company immediately before the demerger." That is paid-up capital plus general reserves out of the books, taken immediately before the demerger. It is not market capitalisation, it is not the price ratio at which the two shares open for trading, and it is not the swap ratio.

That last point is where most computations go wrong. The ratio in s.49(2C) is an accounting ratio - net book value of the assets transferred over net worth as defined - and the company is the only source for it. Listed companies that demerge normally publish the percentage in a shareholder communication or an exchange filing precisely because shareholders need it for this computation. Use that figure and keep the filing on the file; do not derive a ratio from the first day's closing prices.

A worked shape. If the original holding cost 1,00,000 and the company states that the net book value of the transferred undertaking is 30% of net worth as defined, the resulting company's shares carry a cost of 30,000 and the original shares are left with 70,000. On a later sale of either holding, that is the cost that goes into s.48.

On the holding period, the shareholder does not start again. Explanation 1, clause (i), item (g) to s.2(42A) provides that "in the case of a capital asset, being a share or shares in an Indian company, which becomes the property of the assessee in consideration of a demerger, there shall be included the period for which the share or shares held in the demerged company were held by the assessee". So the resulting company's shares carry the period for which the original holding was held, and the classification consequences are at period-of-holding-after-the-finance-no-2-act-2024.

The corpus already has the amalgamation counterpart. CIT v. Grace Collis, at cit-v-grace-collis-extinguishment-of-rights, deals with the shareholder's position on a merger, where the rights in the old shares are extinguished, s.47(vii) applies and the cost moves across under s.49(2). The demerger case is structurally different because the old shares survive - they are not extinguished, they are merely worth less - which is why the statute needed a proportionate split rather than a straight substitution.

Why it matters

Shareholders in demerged listed companies sell one leg and keep the other, and the broker's capital gains statement will usually show the resulting company's shares at nil cost or at the first traded price. Both are wrong, and both produce a return that the department can contradict from the company's own filing. Getting the ratio right also matters on the other side: understating the cost of the new shares overstates the gain now, and overstating it stores up a dispute for whenever the original holding is sold.

What to do

Where people go wrong

Unsettled, or not pinned down. It names no decision, because I found none on the mechanics. It does not deal with the conditions a scheme must satisfy to be a demerger within s.2(19AA), with the company-level exemption in s.47(vib), or with what happens where the scheme is later modified by the court. It also does not identify the corresponding provisions of the Income-tax Act, 2025.

Authorities on these sections

Judgments in this library that turn on the same provisions.

Where this came from

Every page in this library links to what it was written from, so you can check it rather than take our word for it.