Companies have several means through which they share their prosperity with shareholders. Dividends are the portion of corporate profits paid out to stockholders in the form of cash. Share buybacks on the other hand represent cash distributed to existing shareholders in exchange for a fraction of the company’s outstanding equity. While both methods have their pros and cons, when used carefully, they could strongly add to the total returns of long-term shareholders.

Share Repurchases have gained popularity among companies because there's a total flexibility with them, whereas dividend payments require a commitment. With repurchases a company could spend billions buying back its stock in one year, and then spend nothing for the next few years. With dividends however a company that cuts, eliminates or suspends its payment would likely enrage shareholders.

Some investors believe that stock buybacks are the most tax efficient way for companies to return cash to shareholders. Currently, the highest tax on qualified dividend income is 15% for the top income tax bracket. When companies earn money, they pay taxes on it. When companies pay dividends, dividends are taxed again at the individual level.

When companies repurchase their own shares, they decrease the number of outstanding stock available, which theoretically increases the stock value. Some investors consider this to be the most tax efficient method of returning cash to shareholders, since there is no tax on repurchasing shares. These investors seem to forget however that the holders of stock who sold to the company end up paying a capital gains tax on their profit. While not all shareholders sell stocks to companies, which are repurchasing their own stock, the ones that do could end up with a higher tax bill at the end of the day, especially if they were long-term buy and hold investors.

One reason for the increased popularity of buybacks is that companies do not wish to commit to a certain dividend level, since their earnings are volatile.