Cancelling treasury shares and paying a cash dividend cost a company the same money, but they leave shareholders with different things. A dividend is taxed at 15.4% the moment it lands. A cancellation hands over no cash at all — it retires shares so that each remaining share owns a bigger slice. According to Wolyo Shinmun, SK Hynix will cancel 24.07 million shares, or 3.3% of shares outstanding, by 19 November 2026 — a move that lifts remaining holders' earnings per share by roughly 3.4%. Shareholders pay nothing in tax for that gain.
Samsung Electronics, over the same stretch, built its plan around roughly 30 trillion won in cash dividends. Which route serves an investor better is not decided by the company; it is decided by that investor's marginal tax rate and holding horizon. Since the amended Commercial Act took effect on 6 March 2026, making cancellation the default treatment for treasury stock, this is no longer an exotic choice made by a handful of firms.
Why a 3.3% cancellation lifts EPS by 3.4%
The arithmetic is one line. Retire x% of shares outstanding and each surviving share's claim on earnings multiplies by 1÷(1−x). For 3.3%, that is 1÷0.967 = 1.0341, a 3.41% gain. Because the denominator shrinks faster as the ratio climbs, the EPS lift pulls steadily ahead of the cancellation percentage itself.
| Shares cancelled (%) | Shares remaining (%) | EPS increase (%) |
|---|---|---|
| 1.0 | 99.0 | 1.01 |
| 2.0 | 98.0 | 2.04 |
| 3.3 | 96.7 | 3.41 |
| 3.8 | 96.2 | 3.95 |
| 5.0 | 95.0 | 5.26 |
| 10.0 | 90.0 | 11.11 |
Money Today reports that KB Financial Group retired 14.26 million treasury shares — about 3.8% of shares outstanding, worth 2.3 trillion won. Run that through the same formula and it pushes EPS up by roughly 3.95%. Shinhan Financial hit a 50.2% total shareholder return ratio last year, while Hana Financial paired a 200 billion won buyback-and-cancellation with a dividend raise from 906 won to 1,145 won per share, up 26.4%.
One caveat matters more than the headline. This EPS gain does not come from earning more. The numerator, net income, is unchanged; only the denominator moved. And the cash used for the buyback left the company, so equity falls by the same amount. Shrinking equity mechanically lifts return on equity — but if that capital could have funded a higher-returning business, the cancellation carried a real opportunity cost. Judging a company on its payout ratio alone hides that entirely.
How far apart are dividends and buybacks after tax?
To compare them you have to freeze the variables. Take a company with 100 million shares outstanding, a 100,000 won share price (10 trillion won market cap) and 500 billion won of annual net income, giving EPS of 5,000 won. It commits 500 billion won to shareholder returns. As a dividend that is 5,000 won per share. As a cancellation it buys 5 million shares at 100,000 won — 5% of the float.
| Item | Dividend of 5,000 won/share | 5% share cancellation |
|---|---|---|
| Capital returned (bn KRW) | 500 | 500 |
| Cash received (KRW/share) | 5,000 | 0 |
| Dividend tax at 15.4% (KRW/share) | 770 | 0 |
| After-tax cash (KRW/share) | 4,230 | 0 |
| Shares outstanding after (m) | 100.0 | 95.0 |
| Theoretical share price (KRW) | 95,000 | 100,000 |
| Price + after-tax cash (KRW) | 99,230 | 100,000 |
| EPS (KRW) | 5,000 | 5,263 |
The dividend column assumes the price drops by the full dividend on the ex-date. The cancellation column assumes 500 billion won of cash leaves, taking market cap to 9.5 trillion won across 95 million shares — a price of exactly 100,000 won. The 770 won gap between the two columns is the dividend tax and nothing else. So the table does not say cancellations are better; it says they differ by exactly the tax.
A cancellation does not erase tax. It defers it until the day the shareholder sells.
The gap widens for investors with large financial income. Once interest and dividends together clear 20 million won a year, the income rolls into comprehensive taxation, where the top rate reaches 49.5% including local surtax. A price gain from a cancellation, by contrast, is not a capital-gains event for a retail holder of Korean listed stock — so the character of the return shifts from taxable to untaxed. There is an offset from 2026: dividends from qualifying high-payout listed companies can elect separate taxation. Per KB Kookmin Bank's tax briefing, the special rates are 14% up to 20 million won, 20% from 20 million to 300 million, 25% from 300 million to 5 billion, and 30% above that, running through dividends for fiscal 2028. The payout-ratio conditions are covered separately in our breakdown of the 40% payout threshold and the four tax brackets.
Holding period is the other lever. A dividend crystallises tax every year; a cancellation defers it. An investor who reinvests dividends is effectively paying 15.4% and buying back in each year, so the longer the compounding runs, the wider the cumulative gap in favour of cancellations. For someone living off dividend income, though, a cancellation is a return that only becomes cash if you sell — a fundamentally different instrument.
Effective March 2026: cancel within one year of purchase
The rules themselves changed. As explained in Lawtimes, the amended Commercial Act (Act No. 21448), promulgated and effective on 6 March 2026, makes it the default that treasury shares be cancelled within one year of acquisition. Shares already held before the effective date get 18 months — until 5 September 2027. Sectors under foreign-ownership caps, such as broadcasting, telecoms and aviation, receive a longer separate grace period.
As Kim & Chang notes, the exemptions are not automatic. A company with a genuine purpose — employee compensation, new-technology investment, balance-sheet repair — must draw up a treasury-share holding and disposal plan and win shareholder approval at the annual general meeting. Approval does not carry over; it must be renewed every fiscal year, which puts continued holding to a vote annually.
Two things change for investors. First, a buyback announcement now sits much closer to a cancellation announcement. Companies used to park repurchased shares and dispose of them later, returning the share count to where it started; now a one-year clock is attached. Second, because the holding plan comes up at every AGM, shareholders get a documented reason for why the company still holds its own stock.
Some companies cannot cancel freely
Not every firm can retire as much stock as it likes. Cancellation shrinks the share count, which automatically raises the ownership percentage held by the controlling shareholder and affiliated parties. Where that percentage is legally capped, the increase itself becomes the constraint. Wolyo Shinmun reports that Samsung Life and Samsung Fire & Marine together hold roughly 9.99% of Samsung Electronics' common stock — close enough to the ceiling under the Act on the Structural Improvement of the Financial Industry that a cancellation would push against it. That structure sits behind Samsung's dividend-heavy plan.
In holding-company structures, foreign-ownership-capped industries, and groups with financial affiliates in the ownership chain, "has room to return capital" and "can cancel shares" are not the same statement. Expecting a cancellation on the strength of total payout capacity alone can end in a dividend announcement instead — and the after-tax result differs by exactly what the table above shows.
What to watch
- The gap between the buyback filing and the cancellation filing — does the board resolve to cancel before the one-year mark from acquisition?
- Whether a treasury-share holding and disposal plan appears on the AGM agenda, and whether the stated reason is employee compensation or a business purpose
- 5 September 2027 — the deadline for shares acquired before the amendment. Firms with large legacy treasury holdings may cluster decisions around that date
- Whether the cancellation is expressed as a percentage of shares outstanding — a headline figure in trillions of won tells you nothing about the EPS effect
- Whether your own annual financial income is approaching 20 million won — past that line, the after-tax gap between dividends and cancellations widens sharply
- Whether the company sits under an ownership ceiling (financial-industry rules, foreign-ownership caps) — payout capacity and cancellation capacity are separate questions
Sources
- The 2026 amended Commercial Act's mandatory treasury share cancellation and changes in corporate governance (Lawtimes)
- Third Commercial Act amendment on mandatory treasury share cancellation (Kim & Chang)
- 2.3 trillion won in buybacks, 50% payout ratio: financial holding companies reshape value-up (Money Today)
- Samsung chose dividends, Hynix chose cancellation: how the shareholder's share differs (Wolyo Shinmun)
- A look at the 2026 tax law changes (KB Kookmin Bank)