What is a Share Buyback?

A share buyback (or share repurchase) is a corporate action where a company uses its own cash or borrowed funds to buy back its shares from the open market or directly from existing shareholders.

This article explains what a share buyback is, its benefits, and risks.

Key Takeaways

• A share buyback means a company buys its own shares from existing shareholders, reducing the number of shares available in the market.
• Buybacks can increase EPS because the company's profits are divided among fewer outstanding shares.
• Companies use buybacks to return excess cash to shareholders, especially when they do not have better investment opportunities.
• Buyback is not always a positive sign. If a company overpays for its shares, takes on too much debt, or has weak business growth, the buyback can hurt shareholders.
• Investors should check the company's cash flow, debt, share valuation, profit growth, and management's capital allocation decisions before participating.

What is a Share Buyback?

A share buyback is the process by which a company buys back some of its outstanding shares from shareholders.

This is the basic concept behind a share buyback:

Company has excess cash → Company buys its own shares → Number of shares held by the public may decrease → Remaining shareholders own a larger percentage of the company.

Example:

You have 100 shares of a company with 1,000 shares outstanding.

This means you have 10% ownership in the company.

If the company buys back 200 shares and cancels them, the total number of outstanding shares will be 800.

Your 100 shares will now account for 12.5% of the company.

Your total number of shares has not increased, but your ownership percentage has.

Types of Share Buyback

Open Market Buyback

In an open-market buyback, the company repurchases its own shares through the stock exchange at prevailing market prices, like any other market participant. The company announces the proposed buyback amount and the period within which it intends to complete the repurchase.

Under SEBI's revised framework, open-market buybacks through stock exchanges were reintroduced from August 1, 2026. The buyback must generally be completed within 66 working days, with at least 40% of the earmarked amount required to be utilized during the first half of the buyback period. Promoters are not allowed to participate, and their holdings remain frozen during the buyback period.

Tender Offer

A tender offer is an offer by a company to buy a specified number of shares from current shareholders at a specified price or under specified terms.

The shareholders have the option to accept or reject the offer and sell their shares.

If more shareholders wish to sell than the company wishes to buy, the company may accept some of the shares offered.

Read More About: Different buyback method

Why do Companies go for Share Buybacks?

There is no particular reason for buybacks. Various companies might have different reasons for adopting the strategy. The most popular objectives are discussed below.

To Return Excess Cash to Shareholders

A company earning high profits can have excess cash beyond what it requires for conducting its operations. It can retain excess cash, invest in profitable ventures, declare dividends, or conduct buybacks.

The strategy provides an additional avenue for returning the cash to the shareholders.

Example: If a company believes it does not have enough attractive projects to invest in, it may decide that buying back its own shares is a better use of excess cash.

To Decrease the Number of Outstanding Shares

Through share buyback, the number of outstanding shares decreases. This can increase shareholders' ownership stake, thereby maintaining their holding in the firm. It can also affect the company’s ratios, such as earnings per share (EPS).

Suppose there is a company earning ₹100 crore and having 10 crore shares.

Then its EPS would be:

₹100 crore ÷ 10 crore shares = ₹10 per share

Particulars	Before Buyback	After Buyback
Total Profit	₹100 crore	₹100 crore
Outstanding Shares	10 crore	8 crore
EPS Calculation	₹100 crore ÷ 10 crore	₹100 crore ÷ 8 crore
Earnings Per Share (EPS)	₹10	₹12.50

Note: The company’s total profit remains unchanged at ₹100 crore, but its EPS increases from ₹10 to ₹12.50 because the number of outstanding shares falls after the buyback. 

To Improve Earnings Per Share

As explained earlier, buying back shares can reduce the number of shares outstanding. If profits remain the same, fewer shares can mean higher EPS.

Higher EPS may make a company's financial performance appear stronger on a per-share basis.

However, investors should not look only at EPS. A company could increase EPS through buybacks even as its underlying business is growing slowly or facing problems.

Therefore, investors should examine revenue, profit, cash flow, debt, and business growth along with EPS.

Also Read About: What is Basic Earnings Per Share (EPS)?

To Offset Shares Issued to Employees

Many companies give employees stock options or shares as part of their compensation.

When new shares are issued, the ownership percentage of existing shareholders can be diluted. Some companies use buybacks to offset this dilution.

Example:

If a company issues 5 million new shares to employees, it may later buy back a similar number of shares from the market. This can help keep the overall share count more stable.

Also Read About: What Happens When a Company Buys Back Stocks?

How are Share Buybacks Taxed?

Share buyback proceeds are taxed under the capital gains regime (effective 1 April 2026), reversing the short-lived ‘deemed dividend at slab rate’ treatment that applied from October 2024 to March 2026.

Taxable base: Tax is calculated solely on actual profit (buyback price minus the original cost of acquisition), rather than taxing the entire gross proceeds.

Investor rates: For listed equities, qualifying long-term capital gains (LTCG) are taxed at 12.5% (above the ₹1.25 lakh annual exemption), while short-term gains (STCG) are taxed at 20%.

Promoter vs Retail distinction: While retail and non-promoter investors enjoy standard capital gains treatment, promoters face specialised anti-arbitrage measures (including effective tax rates of 22% for domestic corporate promoters and 30% for others).

This framework re-establishes buybacks as a tax-efficient mechanism for minority shareholders compared to traditional dividends, which remain fully taxable at individual income tax slab rates.

Also Read About: What is Short Term Capital Gains Tax?

Advantages of Share Buybacks

Share buybacks offer various benefits to the corporation. However, investors should not treat a buyback announcement as proof that the company is financially healthy.

• Higher ownership for remaining shareholders: As the number of shares outstanding decreases, shareholders who do not sell may have a larger ownership stake in the firm.
• Potential increase in EPS: With fewer shares outstanding, EPS can increase if profits remain unchanged.
• Flexible way to return capital: Unlike regular dividends, which investors may expect every year, buybacks give management greater flexibility in returning excess capital.
• Possible signal of management confidence: A buyback can sometimes indicate that management believes the company has enough financial strength or that its shares are attractively priced.

Also Read About: How to Apply for Buyback of Shares?

Risks of Share Buybacks

Share buybacks are not always good news. There are risks associated with them.

• Overpayments: The main risk is that a company buys its shares when they are overvalued. When management pays ₹1,000 per share that is actually worth ₹600, it has not invested its funds rationally. In such cases, the buyback destroys the value of the company rather than creates it.
• Less cash available: Money spent on buybacks cannot be used for other purposes at the same time. A company may have better opportunities to invest in new factories, technology, research, employees, acquisitions, or debt repayment. If it spends too much on buybacks, it may have less financial flexibility later.
• Buybacks can hide weak business growth: Higher EPS after buyback can sometimes give investors a misleading impression. Imagine a company has flat profits but significantly reduces its share count. EPS may rise even though the underlying business has not become stronger. This is why investors should look beyond EPS.
• Increased debt: Some companies borrow money to fund buybacks. This can be risky, especially if the business does not generate enough cash to comfortably manage its debt. A company should not take on excessive debt simply to purchase its own shares.

Conclusion

A stock buyback is nothing but the repurchase of stocks by the issuing company. Initially, the concept may seem odd, but in certain situations it can be justified if the company has surplus funds or there are no good investment opportunities. A successful share buyback reduces the number of shares outstanding, thereby increasing the proportionate holdings and earnings per share of the shareholders who retain their shares.

Also Read About: Impact of Buyback on Share Price