Return Calculation5 分で読めます

Total Return vs. Price Return — The Difference Dividends Make

The news says 'the S&P 500 rose 7x over 30 years,' but some sources say '13x.' Both can be right. The identity of that difference is exactly 'dividends.'

What's the difference between price return and total return?

There are broadly two ways to compute a stock index.

Price Return looks only at 'price.' It reflects only how much the stock's value rose and fell, and does not include the dividends the company pays out.

Total Return adds 'dividends' to the price change. It assumes you use the dividends received to buy that stock again (reinvest) and keep rolling it, and calculates accordingly.

Simply put, price return is a 'report card looking only at the stock's value,' and total return is the 'real state of your wallet, dividends included.' What's closer to the money we actually end up with is the total return side.

The KOSPI and S&P 500 'indexes' that often appear in the news are mostly price indexes that exclude dividends. So they can look lower than the actual long-term investment performance.

Looking at just one year, there seems to be little difference, but...

Over a single year, the two numbers are almost stuck together. For example, if some index rose 5% in price over a year and its dividend yield was 2%, the price return is +5% and the total return is about +7%. Just a 2-percentage-point difference, so it seems trivial.

But this small difference widens frighteningly as time accumulates. Because of 'compounding': reinvested dividends produce more dividends the next year, and those dividends produce still more dividends.

So as the period lengthens to 5, 10, or 30 years, the total-return curve pulls increasingly further above the price-return curve. It shows why dividend reinvestment matters so much in long-term investing.

The power of dividends in numbers (the S&P 500 case)

Looking at long-run data for the U.S. S&P 500, the presence of dividends is clear.

According to S&P Dow Jones Indices data, from 1926 to early 2025, dividends (including reinvestment) accounted for about 31% of the S&P 500's total return. Some sources, depending on data and period, put it at roughly 30–40%. Either way, the big picture is the same: 'around a third of the total return came from dividends.'

On an annual average basis, the S&P 500's total return was historically roughly 9–10% a year, while the price return excluding dividends was roughly 6–7% a year. When a gap of about 3 percentage points a year compounds over decades, the final amounts diverge severalfold.

The contribution of dividends differed by era. In the 1940s and 1970s, more than half of the total return was dividends, but in the 1990s it was about 14%. Recently, the S&P 500 dividend yield is about 1.3%, lower than the past average (3–4%), so the future contribution of dividends may be smaller than in the past. (Source: S&P DJI, Hartford Funds)

Is what I actually receive the total return?

The total-return index is calculated on the ideal assumption that 'all dividends are reinvested immediately, with no taxes or fees.' Reality is a bit different.

First, there are taxes. In Korea, receiving dividends incurs dividend income tax, so the money that reaches your hand is less than the amount the index assumes.

Second, automatic reinvestment may not happen. Individual stocks and 'distributing' ETFs pay dividends/distributions in cash, so unless you buy again yourself, the compounding effect is interrupted. Conversely, 'accumulating' products roll it over for you automatically.

Third, trading fees also nibble away little by little. So actual performance usually lands somewhere in between—higher than the price return but slightly below the theoretical total return.

So when comparing returns...

The key is 'comparing like with like.'

If you compare one asset on a total-return basis and another on a price-return basis, the one paying more dividends unfairly looks like it's at a disadvantage. Be especially careful when comparing stocks with interest-bearing assets like deposits and bonds.

The calculators of 'The Return of Almost Everything' make it a principle to show the effects of dividends, exchange rates, and fees together without hiding them. Use the lump-sum or recurring-investment simulations to directly check 'how much your money actually became with dividends included.'

よくある質問

Q. Is the KOSPI index a total return or a price return?

The headline KOSPI index in the news is a 'price index' that excludes dividends. The Korea Exchange (KRX) also separately computes a total-return index (TRI) that reflects dividends, but it rarely appears in general news. So looking only at the KOSPI can make the actual long-term investment performance look underestimated.

Q. So for a stock with a low dividend yield, the gap between total and price return is small?

Right. If it's mostly growth stocks that pay almost no dividends, the difference between the two returns is small. Conversely, for a stock or index that steadily pays large dividends, the gap is large. So the size of the 'disadvantage of excluding dividends' varies depending on which asset you're comparing.

Q. Isn't it always better to look only at the total-return index?

The total-return index assumes zero taxes, zero fees, and immediate reinvestment, so it comes out slightly more generous than reality. In practice, dividend income tax and trading fees are shaved off little by little. Still, total return is far closer to your actual wallet than a price return that ignores dividends entirely.