Qualified Dividends (U.S.) and Their Tax Treatment

U.S. tax law divides dividends into qualified dividends and ordinary (non-qualified) dividends.

Qualified dividends are taxed at the same preferential rates as long-term capital gains: 0%, 15%, or 20%. Ordinary dividends, by contrast, are taxed at ordinary income tax rates like earned income, rising up to 37%. On top of this, high earners face an additional 3.8% Net Investment Income Tax (NIIT), so even a qualified dividend can carry an effective rate of up to 23.8%.

To be recognized as a qualified dividend, you must meet a holding-period requirement. For common stock, you must hold the shares for more than 60 days during the 121-day window surrounding the ex-dividend date.

In other words, you cannot get the preferential rate by buying just before the ex-dividend date to capture the dividend and then selling right away; the ordinary income tax rate applies instead. In addition, the company paying the dividend must be a U.S. corporation or a qualified foreign corporation. This requirement is also the key reason the "dividend capture strategy" discussed later becomes tax-disadvantaged.

When a Korean resident receives dividends from U.S. stocks, the U.S. typically withholds 15% of the dividend first (the tax-treaty rate). The "qualified/ordinary" rate system of this concept applies mainly and directly to U.S. taxpayers.

A Korean resident reflects the tax withheld in the U.S. as a foreign tax credit and then follows Korea's dividend income tax (15.4%) and comprehensive financial income taxation system. So the U.S. concept of qualified dividends is worth knowing as background for understanding "why holding a dividend for a long time is tax-advantageous." It is also worth noting that REIT and certain fund dividends often fail to meet the qualification requirements and are taxed as ordinary dividends.