Bonus Issue vs Stock Split: The Real Difference

A bonus issue hands existing holders extra shares at no cost and pays for them by moving an amount out of reserves into share capital, leaving face value alone. A stock split cuts each share into several smaller ones and moves nothing. From where a holder sits the two are the same event. The count rises, the price adjusts, and nothing of value has been made.

Picture two notices pinned to the same board. The first tells holders that every share they have will be matched by a second one, handed over at no cost. The second tells them each share is about to become five. Read the headlines and the first looks like a windfall while the second looks like housekeeping. Work through the arithmetic and the two land in almost exactly the same place, and neither of them is a windfall.

The confusion is unusually durable. It survives in newspapers, in dealer commentary and in perfectly competent conversations. The mistake survives because both actions really do leave a holder with more shares than they had the day before, and more of a thing normally means more. Here it does not. Both actions multiply the number of pieces the same claim is cut into, and neither of them adds anything to the claim. A corporate actionAnything a company does that changes the shares themselves rather than the business behind them: a change in the count, a change in face value, a payment made to holders because they are holders. can move value. These two do not, and every claim below is worked in numbers a reader can check.

Three things are assumed throughout. The first is the share itself, the short list of things a holder is entitled to, and a quoted price set against value and against the assumptions a market is carrying. The second is the outline of both actions as a listed company announces them. The third is the balance sheet, so the equity section, its two components and the idea of a total that has to hold are taken as read. The comparison itself is worked below in whole shares and whole rupees.

The company throughout is Sarvani Coatings Limited, invented for teaching, a maker of decorative paints and industrial coatings. Sarvani Coatings is a useful example for one specific reason: it has done both. A stock split at the start of its year one and a bonus issue at the end of the same year sit in its published history, and every per share figure it reports has already been put onto the count that survived them. So the two actions can be set beside each other on one company's own numbers instead of two hypothetical ones.

What is a bonus issue, taken on its own?

A bonus issue is the company creating new shares and giving them to the people who already hold shares, in proportion to what each of them holds, for nothing. A holder of four hundred shares before a one for one bonus holds eight hundred after it, and no money left that holder's bank account to get the second four hundred. Every other holder was treated the same way at the same ratio on the same day.

The obvious question is who paid for the new shares, and the answer is that the company paid, out of itself. A share has a nominal amount attached to it, and the total of those nominal amounts across every share in issue is the company's share capitalThe total of the nominal amounts attached to every share a company has issued. Share capital is one of the two parts of the equity section of a balance sheet, and how it is built up belongs to the accounting material.. Issue more shares and that total has to rise. The money to make it rise comes from the company's own reservesProfits held back over the years, together with certain other amounts a company has set aside. Reserves stand alongside share capital and make up the rest of the equity side. Accounting rules settle which reserve may be applied to what., which is the accumulated part of equity sitting beside share capital. An amount equal to the nominal value of the new shares is taken out of reserves and added to share capital, and the two lines change by exactly the same figure in opposite directions.

Both lines being adjusted are already inside the same equity total, so nothing enters the company and nothing leaves it. Think of a household that keeps its savings in two jars, one labelled for the house and one labelled for everything else, and one evening moves an amount from the second jar to the first. The household is not richer at bedtime. The household has relabelled part of what it already had. A bonus issue is that transfer, done inside the equity section of a balance sheet, with new share certificates issued against the amount that moved.

The last piece of the definition matters more than it looks. The nominal amount attached to each individual share does not change in a bonus issue. If it was Rs 2/- a share before, it is Rs 2/- a share afterwards, on every share including the new ones. The count went up, the nominal amount per share stayed put, and share capital therefore went up by the count times the unchanged nominal amount. Hold on to the unchanged nominal amount per share. It becomes the test that identifies the action.

What is a stock split, taken on its own?

A stock split takes each share that already exists and divides it into a larger number of shares, each carrying a proportionately smaller nominal amount. One share of Rs 10/- becomes five shares of Rs 2/- each. Nothing was created, so nobody is issued anything new in the sense a bonus issue issues something new. The same object was cut up.

Traced through the accounts, that does nothing. Share capital is the count multiplied by the nominal amount per share. A split multiplies the count by five and divides the nominal amount by five, so the product is arithmetically unmoved. Sarvani Coatings had 2,40,00,000 shares of Rs 10/- each, for Rs 24 crore of share capital. After the split it had 12,00,00,000 shares of Rs 2/- each, again for Rs 24 crore of share capital. The two figures are equal, and that equality is not a coincidence to be noted in passing but the actual proof that nothing moved.

Because share capital did not change, no reserve had to be drawn on. There was no amount to fund, so there was nothing to fund it with. A bonus issue has a bill. A split does not.

The everyday version is the one everybody already knows. A five hundred rupee note taken to a shopkeeper and swapped for five hundreds is the whole of a stock split. The note holder walks away with five pieces of paper instead of one, the shopkeeper is neither up nor down, and nothing was created anywhere in the transaction. Afterwards the note holder can spend a hundred rupees without breaking anything. Companies give roughly that reason for splitting, and how much weight the reason carries is taken up below.

What happens to the holder under each of them?

Now put the two side by side from the position most readers occupy: somebody holding shares and reading a statement. Take a holding of 12,000 shares in Sarvani Coatings when the company had 12,00,00,000 shares in issue. Those 12,000 shares are 0.01 per cent of the company, and at the illustrative price of Rs 486/- they are worth Rs 58,32,000/-.

Apply a one for one bonus. The holding becomes 24,000 shares. The company now has 24,00,00,000 shares in issue, so 24,000 of them is 0.01 per cent, exactly as before. The same claim is now cut into twice as many pieces, so the price adjusts to Rs 243/-. And 24,000 shares at Rs 243/- is Rs 58,32,000/-. Not approximately. Exactly.

Now apply a stock split at the same ratio instead, one share becoming two. The holding becomes 24,000 shares. The company has 24,00,00,000 shares in issue, so the holding is 0.01 per cent. The price adjusts to Rs 243/-, and the holding is worth Rs 58,32,000/-. Every single line is the same line as the paragraph above it.

From a holder's own position the two actions are not different, so a holder cannot tell them apart. The identity is exact rather than an approximation made for teaching. Shares held, proportion of the company, price a share and value of the holding are identical, figure for figure, under both. A statement showing a count that had doubled and a price that had halved gives no way to answer which of the two had happened, and that is precisely why the two get confused. The confusion is not carelessness. The confusion is a correct reading of the only evidence most people ever see.

Where does the whole of the difference actually sit?

If a holder cannot see any difference, it is fair to ask whether there is one. There is, and it lives in one place: the equity section of the balance sheet. The equity section is the axis the two actions were built to differ on, and it is the only axis on which they do.

Sarvani Coatings' equity totalled Rs 1,486 crore, its published net worthThe total of everything on the equity side of a balance sheet: share capital plus reserves. Net worth is what would be left for holders if every other claim on the company were settled at the amounts stated.. Hold that total and put each action through it. Before either, take share capital at Rs 24 crore and reserves of Rs 1,462 crore beside it. The two add to Rs 1,486 crore.

Under the split, share capital is Rs 24 crore afterwards and reserves are Rs 1,462 crore afterwards. Both lines are where they were. Under the bonus, share capital goes to Rs 48 crore and reserves go to Rs 1,438 crore. Two lines moved, by Rs 24 crore each, in opposite directions, and the total is Rs 1,486 crore either way.

The Rs 24 crore moved is the entire difference between the two actions, and it is a difference with a real consequence: after the bonus, Sarvani Coatings shows Rs 24 crore less in reserves than it did the day before. A split leaves the company with everything it had. A bonus leaves it with the same total but with less of that total sitting in the part of equity that can be put to other uses. Which uses, and how much of a reserve is available for what, is an accounting question with its own rules, settled in the accounting sequence. Reserves are smaller after a bonus, and a split leaves them alone entirely.

So the honest summary of the accounts axis is this. The split has no consequence in the accounts at all. The bonus has exactly one, and it is not a consequence for a holder's wealth. The consequence falls on what the company has left in a particular pocket.

Which single check tells which of the two happened?

Face value is the check, and it is unusually clean. The two actions treat face value in opposite ways by construction rather than by convention. A bonus issue leaves the nominal amount per share exactly where it was. A stock split reduces it in proportion to the split. The opposite treatment is what makes each action the thing it is. There is no version of either in which the treatment fails.

So: the face value before, and the face value after. If it fell, a split happened. If it held, a bonus happened. No other information is needed. Not the count, not the price, not the reason given in the announcement, not the reserves. One line, before and after.

Sarvani Coatings shows both cases in its own record. At the start of year one its face value went from Rs 10/- to Rs 2/- and the count went from 2,40,00,000 to 12,00,00,000. Face value fell, so that was a split. At the end of year one face value stayed at Rs 2/- while the count went from 12,00,00,000 to 24,00,00,000. Face value held, so that was a bonus. Two readings of one line separate two actions that are otherwise indistinguishable from anywhere else a reader could stand.

A second check agrees with the first. The second check earns its place when a disclosure states face value awkwardly or not at all. Look at share capital. If it is the same figure before and after, the count was multiplied and the nominal amount divided, so it was a split. If it rose in the same proportion as the count, the nominal amount held, so it was a bonus. The two checks are the same arithmetic read from either end, so they cannot disagree.

What did the two actions do to Sarvani Coatings, line by line?

Sarvani Coatings did both inside a single year, and that single year is a good place to watch the arithmetic run twice. Work it in whole shares and whole rupees. The equalities show up cleanly there, and a decimal would hide them.

The split came first, at the start of year one. Face value went from Rs 10/- to Rs 2/-, so one share became five, and the count went from 2,40,00,000 to 12,00,00,000. Multiply each count by its own face value. Before: 2,40,00,000 times Rs 10/- is Rs 24,00,00,000, or Rs 24 crore. After: 12,00,00,000 times Rs 2/- is Rs 24,00,00,000, or Rs 24 crore. A figure that is the same on both sides of an event did not move through the event. Write those two products next to each other and the case is closed.

Then the bonus, in the closing weeks of that same year one, at one new share for every share held. The count went from 12,00,00,000 to 24,00,00,000 and face value stayed at Rs 2/-. So share capital went from Rs 24 crore to 24,00,00,000 times Rs 2/-, or Rs 48 crore. The extra Rs 24 crore did not arrive from outside. It was taken out of reserves. So the company's reserves are Rs 24 crore lower after the bonus than before it, and its total equity is not.

Read the fourth column down. The column goes 24, 24, 24, 48. Three of those four figures are the same figure, and the one that changed is the one where face value refused to fall while the count rose. The share capital column is the whole comparison compressed into four numbers.

Now the price. The price is where a holder feels the event. Every price used below is assumed rather than read off a market, and a traded price would sit wherever buyers and sellers put it. The same claim is divided into twice as many pieces, so at an illustrative Rs 486/- a share a one for one bonus takes the price to Rs 243/-. A one into five split takes the same Rs 486/- to Rs 97.20/-. Drawn as rectangles whose width is the count and whose height is the price, the three have identical area. The geometry says what the arithmetic already said.

Why would a company do either, if nothing of value moves?

Two reasons are usually given. The first is that a smaller price a share makes a single share easier to buy, and an easier purchase is said to widen the group of people who can hold one. The second is that announcing either action signals that management is confident about what is coming, on the reasoning that a company would not multiply its share count if it expected the price to fall back.

Both reasons are real in the sense that companies genuinely give them, and boards genuinely discuss them. Whether either reason actually delivers what it claims is a different question, and it is a contested one. There is a serious body of work on both sides and it does not converge. The arithmetic stands, and so does the fact that companies give these reasons. Whether either reason delivers a benefit is left unsettled by the evidence rather than asserted.

One thing holds without any of that being resolved. Neither action changes the business. Sarvani Coatings sold the same paint on the day after its bonus as on the day before it, to the same customers, at the same margin, with the same factories and the same debts. The value of the company was not touched. Valuing a business is a separate question, settled under corporate finance and valuation rather than by share counts.

One false lesson is worth refusing explicitly. It is the most common one attached to splits. A share priced at Rs 97.20/- after a split is not cheaper than the same share priced at Rs 486/- before it. There is a fifth as much company attached to it. A holder buying a fixed rupee amount gets exactly the same proportion of Sarvani Coatings either way, and a smaller number on a screen is not a reason to hold something. An announcement of either action changes the arithmetic rather than the business, and arithmetic alone never decides whether a share is worth holding or what level it ought to reach. The rest of what is written about these two actions is worth testing against that.

Which figures stop being comparable the moment either happens?

The practical consequence follows from the count changing rather than from anything either action does to the accounts, so it applies identically to both.

Year one left Sarvani Coatings with Rs 143 crore of profit after tax. Divided by the 2,40,00,000 shares standing before the split, that is Rs 59.58/- a share. Divided by the 12,00,00,000 that stood between the split and the bonus, it is Rs 11.92/-. Divided by the 24,00,00,000 left once both were done, it is Rs 5.96/-. Same profit, same year, same company, three answers.

Just one of the three belongs in a series with Rs 8.21/- from year two and Rs 11.58/- from year three, and it is Rs 5.96/-. Only Rs 5.96/- sits on the count those later figures sit on. Reach for Rs 11.92/- instead and year one to year two reads as a fall of about 31 per cent, in a stretch where profit after tax climbed from Rs 143 crore to Rs 197 crore. An unrestated series is not awkward or imprecise. It is wrong. An unrestated series sets figures computed on different denominators beside each other and calls the difference a trend.

The requirement is broader than earnings per share. Earnings per share is the part most readers already half know. Book value per share is a per share figure and must be restated. Dividend per share is a per share figure and must be restated. Any historical price series must be restated. A chart that shows Sarvani Coatings' price dropping by half on one day in year one is showing an unadjusted series rather than a fall. The general treatment of what a corporate action does to every per share figure a reader might build is covered separately. The narrower point is that these two particular actions both trigger the restatement, and for the same reason.

Where does this reading most often go wrong?

Which neighbouring questions are settled elsewhere?