When a company has more cash than it needs, it has a handful of broad options: reinvest it in the business, acquire another business, repay debt, hold it as a reserve, pay it out as dividends, or use it to buy back its own shares. Buybacks have become one of the most common uses of surplus cash among large listed companies, and one of the most debated.
Warren Buffett and the Interpretation of Financial Statements treats a history of buybacks as one of the signs of a business with a durable competitive advantage, with some important conditions. This article explains how buybacks work, how they appear in the accounts, why they can signal strength, when they help owners and when they quietly harm them, and what the underlying idea means for founders and owners of private businesses.
What a buyback does
When a company buys its own shares, fewer shares remain in the hands of investors. Each remaining share now represents a slightly larger slice of the same business and the same earnings. Earnings per share rise even if total earnings do not change.
Consider an illustrative company that earns $100 million a year and has 100 million shares on issue. Earnings per share are $1.00. If it buys back 5 million shares, 95 million remain, and earnings per share rise to about $1.053, an increase of more than 5%, without the business earning a single extra dollar.
Treasury stock and cancelled shares
Shares bought back may be cancelled or, in some countries, held by the company as treasury stock. Treasury shares carry no votes and receive no dividends, and they can later be reissued, for example to employees. On the balance sheet they appear as a deduction from shareholders’ equity.
The book is written from a United States perspective, where treasury stock is common. Under Australian company law, shares a company buys back are generally cancelled rather than held, so the effect shows up as a reduction in share capital rather than as a separate treasury stock line. The economics are the same: fewer shares, less equity, the same business.
Ways a buyback can be made
Companies typically buy back shares in one of a few ways:
- On-market: buying shares gradually through the stock exchange at prevailing prices.
- Off-market or tender: inviting shareholders to offer their shares at a set price or within a price range.
- Selective: buying from particular shareholders, usually requiring shareholder approval.
In Australia, buybacks are governed by the Corporations Act and, for listed companies, by stock exchange rules, and the tax treatment of different types of buyback has differed and changed over time. The details matter to individual shareholders, who should seek advice for their own situation.
Why buybacks can signal strength
A company can only buy back shares consistently if it generates more cash than it needs to run and grow the business. Businesses with heavy capital needs, high debt or erratic earnings rarely have that luxury.
That is why the book treats the presence of treasury stock and a history of buybacks as a positive sign: it suggests the business throws off surplus cash year after year. It fits with the other signals in this series, including high margins, low capital spending, low debt and consistent earnings. A company that has steadily reduced its share count over a decade, funded from operations, is usually a company with economics most competitors would envy.
The tax angle
The book also notes a reason Buffett has favoured buybacks over dividends in some circumstances. A dividend is generally taxed as income when it is received. A buyback raises the value of the remaining shares, and owners who do not sell are not taxed on that gain until they eventually do. For long-term owners, that deferral lets more of the return keep compounding.
Tax rules differ between countries and change over time. In Australia, the dividend imputation system means dividends paid from taxed company profits can carry franking credits, which changes the comparison considerably for many shareholders. The principle the book describes is about deferral, not a universal rule that buybacks are better than dividends.
When buybacks help, and when they do not
A buyback is an investment decision like any other. The company is spending its owners’ money to buy a stake in a business, which happens to be itself. Like any purchase, it helps the remaining owners only if the shares are bought for less than they are really worth. The same purchase at an inflated price transfers value from the owners who stay to the owners who sell.
An illustration of price
Suppose our illustrative company is genuinely worth $2 billion, or $20 per share on its 100 million shares, and it spends money buying back 5 million shares.
| Buyback at $15 | Buyback at $30 | |
|---|---|---|
| Cash spent | $75m | $150m |
| Business value after buyback | $1,925m | $1,850m |
| Shares remaining | 95m | 95m |
| Value per remaining share | about $20.26 | about $19.47 |
Buying at $15, below the true value, makes each remaining share worth more. Buying at $30, above it, makes each remaining share worth less. In both cases earnings per share rise by the same amount, which is why earnings per share alone cannot tell you whether a buyback was a good decision.
Of course, nobody knows a company’s true value precisely. But the principle holds: buybacks at modest prices create value for continuing owners, and buybacks at high prices destroy it.
Common misuses
Buybacks can also be misused:
- To flatter earnings per share when total earnings are flat or falling. If executive pay is tied to earnings per share, the incentive is obvious.
- To offset shares issued to executives, so the share count never actually falls. The company spends cash simply to stand still.
- Funded by borrowing, which adds risk to make a short-term figure look better.
- Instead of necessary investment, starving the business of what it needs to stay competitive.
- At market peaks, when the company’s cash and confidence are highest and its share price often is too, rather than in downturns when shares are cheaper.
Buybacks also reduce shareholders’ equity, which inflates return on equity. As another article in this series explains, adding repurchased shares back to equity shows the return without that effect.
Buybacks compared with the alternatives
The right use of surplus cash depends on what each option is likely to earn:
| Option | Return it produces | Best when |
|---|---|---|
| Reinvest in the business | The return on new projects | Good opportunities exist at high returns |
| Acquire another business | The acquired earnings, less the price paid | A sensible purchase at a fair price is available |
| Repay debt | The interest saved | Debt is expensive or risky |
| Hold a reserve | Interest plus resilience | Conditions are uncertain |
| Pay dividends | Cash in owners’ hands | Owners can use it better, or prefer income |
| Buy back shares | The business’s own return, at the price paid | Shares are priced below their value |
A disciplined company compares these options rather than defaulting to any one of them. The book’s admiration for buybacks applies to companies that buy back shares because it is the best available use of surplus cash, not because it is fashionable or flattering.
Reading buybacks well
When a company reports buybacks, a few questions help separate signal from noise:
- Is the share count actually falling over time? Compare shares on issue across several years, including the effect of employee share issues.
- Are buybacks funded from operating cash flow rather than debt? The cash flow statement shows both.
- Does the company still invest adequately in the business? Check capital spending and research against competitors.
- Were shares bought at sensible prices, or mainly at market peaks? Annual reports usually disclose the amount spent and number of shares bought.
- What reasons does management give? A clear explanation linking the buyback to value is more reassuring than vague references to “returning capital”.
Buybacks in private businesses
Buybacks are not only for listed companies. Private businesses often face the same decision when a shareholder wants to leave: a co-founder moving on, an early investor seeking to exit, or a retiring partner.
The company buying back that person’s shares, or the remaining owners buying them personally, raises exactly the same question the book raises for listed companies: is the price fair? Pay too much and the remaining owners lose value; pay too little and the departing owner is treated unfairly, which can lead to disputes.
Several practices help:
- Agree a valuation method in advance, in a shareholders’ agreement, before anyone wants to leave. Disputes are far easier to avoid than to settle.
- Consider how the purchase will be funded. A buyback that drains cash or requires heavy borrowing can weaken the business for those who remain.
- Allow staged payments where cash is tight, so the business is not put at risk.
- Take professional advice. Company law, tax and valuation all matter, and the rules for private company buybacks are specific.
A worked example
A small engineering services company has three equal shareholders. This is an illustration.
One shareholder decides to retire. The shareholders’ agreement, drafted when the company was founded, sets the price at a multiple of average profit over the previous three years, determined by an independent valuer. Because the method was agreed long before, there is no argument about the price.
The company has surplus cash from several strong years, but not enough to fund the whole purchase without weakening its working capital. The remaining shareholders agree that the company will buy back half the retiring shareholder’s stake immediately, funded from surplus cash, and the rest over three years from future profits.
Each remaining shareholder now owns half the business. Because the price reflected genuine earnings and the purchase was funded without heavy borrowing, both continue to benefit from the company’s future profits without having put the business at risk.
What this means for founders
Most young businesses will not buy back shares for many years. But the underlying idea matters early.
Ask what to do with cash you do not need. The disciplined answer is to compare every option, whether reinvesting, holding a reserve, repaying debt or returning money to owners, on the return it will genuinely produce.
Think about ownership changes before they happen. A shareholders’ agreement that covers exits, valuation and funding prevents disputes when circumstances change.
Be careful with dilution. Issuing shares to raise capital or reward staff is sometimes necessary, but every new share reduces each existing owner’s slice. Buybacks later are an expensive way to undo dilution that could have been avoided.
Remember that price decides value. A company investing in itself is only a good investment if the price is right.
Common mistakes
Judging a buyback by its effect on earnings per share. Price relative to value is what matters.
Assuming buybacks always return value. At high prices, they transfer it away from continuing owners.
Ignoring share issues. A buyback that only offsets new shares does not reduce the share count.
Borrowing to buy back shares. It adds risk for a cosmetic improvement.
Leaving private-company exits unplanned. Valuation disputes are costly and damaging.
Questions to ask
- Has the share count fallen over the past decade?
- How were buybacks funded, and at what prices?
- Did buybacks come at the expense of necessary investment?
- What alternatives did management consider?
- For your own business: if a co-owner wanted to leave tomorrow, how would the price be set and how would it be paid?
Bringing it together
A consistent history of buybacks, funded from operations, is one of the signs of a business that generates more cash than it needs. That is why the book treats it as evidence of a durable advantage. But a buyback is only as good as the price paid. At sensible prices it rewards continuing owners; at inflated prices it quietly transfers value to those who sell.
For founders and private business owners, the same discipline applies to every use of surplus cash and every change in ownership: compare the options honestly, agree fair methods in advance, and remember that a business investing in itself is only a good investment when the price is right.
Source: Mary Buffett and David Clark, Warren Buffett and the Interpretation of Financial Statements (2008). Figures in this article are illustrations, not data. Company law and tax treatment are summarised generally and vary by country and over time; seek professional advice. This article is general information, not financial or investment advice.
