InvestGraph
How dividend reinvestment affects long-term returns
Dividends can look small, a percent or two of a holding's value each year, yet whether you reinvest them can make a large difference over decades. This guide explains why, and what the trade-offs are.
What a dividend is
A dividend is a cash payment a company makes to its shareholders, usually out of profits. Many funds that hold dividend-paying companies pass those payments on to their own shareholders. Payments are typically made quarterly, though some pay monthly, semi-annually, or annually.
Two dates matter. The ex-dividend date is the cutoff: you must own the shares before that date to receive the upcoming dividend. The payment date, when the cash actually arrives, usually comes some days or weeks later. On the ex-dividend date, the share price tends to drop by roughly the dividend amount, because the cash is leaving the company. The dividend is not free money; it is part of the investment's value being paid out to you.
Two ways to receive dividends
- Take them as cash. The dividend lands in your account as cash, which you can spend, hold, or invest elsewhere.
- Reinvest them. The dividend is used to buy more shares of the same investment, often automatically through your broker's dividend reinvestment option.
Over a single year, the difference between these is just the size of the dividend. Over many years, the difference grows, because reinvested dividends buy shares that themselves pay dividends.
Why the difference compounds
Here is a simple, hypothetical illustration. Suppose you hold 10,000 worth of an investment whose price never changes, and which pays out 3% of its value in dividends each year.
- Taking dividends as cash: you receive 300 every year. After 20 years you have the original 10,000 in shares plus 6,000 in accumulated cash, for 16,000 in total.
- Reinvesting: each year's dividend buys more shares, so next year's dividend is a little larger. Your holding grows by 3% a year: 10,000 × 1.0320, or about 18,060 after 20 years.
The price never moved in this example, yet reinvesting produced about 2,060 more, purely from dividends earning dividends. With a rising price, the effect is larger still, because the extra shares also rise in value. The longer the horizon, the wider the gap becomes. This is ordinary compounding, applied to the income part of an investment's return.
Real dividends are not this tidy. Companies raise, cut, or suspend dividends, and prices move constantly, so reinvested dividends buy at different prices over time. But the principle holds: reinvesting keeps more of your money invested and compounding.
Price return versus total return
This is why it is important to know which kind of return you are looking at. A price return only measures the change in the share price. A total return also includes dividends, usually assuming they were reinvested. For investments with meaningful dividends, comparing price charts alone can significantly understate how investors actually fared over long periods, and comparing a high-dividend investment with a low-dividend one on price alone can be quite misleading.
Reasons you might not reinvest
Reinvesting is not automatically right for everyone.
- You need the income. Retirees and others living off their investments often take dividends as cash to pay expenses, which avoids selling shares.
- Rebalancing. Taking dividends as cash and directing them to whichever holding is underweight can be a low-cost way to keep a portfolio balanced.
- Concentration. Automatically reinvesting into a single stock steadily increases your exposure to that one company.
Taxes complicate the picture
In many countries, dividends are taxable in the year they are paid even if you reinvest them. Dividends from foreign securities may also have tax withheld at source before you receive them, so the amount available to reinvest is smaller than the headline dividend. Tax treatment depends heavily on where you live and the type of account you use, so check the rules that apply to you. Tax-advantaged retirement accounts, where available, can make reinvestment more efficient.
InvestGraph's simulations do not model taxes or withholding, so the dividend effect they show is a before-tax figure. Depending on your situation, real results could be noticeably smaller.
How InvestGraph handles dividends
The simulator uses closing prices that are not adjusted for dividends and applies each dividend as an explicit cash flow. On each ex-dividend date, it calculates the dividend as the shares you held before that day multiplied by the dividend per share. With Reinvest dividends on, that cash buys more shares at the same day's close. With it off, the cash is held and shown on the chart as a gold band on top of the shares' value. In real life, the cash usually arrives a little later than the ex-dividend date; the simulator simplifies this.
The Cumulative dividends figure counts all dividend cash earned, either way, while Total invested never includes dividends, so the total return reflects the full benefit of the income you received.
Try the comparison yourself
Pick a dividend-paying fund in the simulator and run the same plan twice over a long period, once with reinvestment on and once with it off. Compare the final values and share counts, and watch how the gap widens toward the end of the chart. Then try a shorter period, and notice how much smaller the difference is. That contrast is compounding at work.