Dividend reinvestment plans let you take advantage of the power of compounding. Instead of receiving cash dividends from the company, you may purchase more of a company's stock by having the dividends reinvested. You must sign an agreement with the company for this to be done. If you have a brokerage account or mutual fund, your firm may also have a dividend reinvestment plan. You should check with your firm or the company to see whether you will be charged for this service. Much of the above information is courtesy of the SEC.