Regular readers will know that we love our dividends at Simply Wall St, which is why it's exciting to see Rotork plc (LON:ROR) is about to trade ex-dividend in the next three days. Typically, the ex-dividend date is one business day before the record date which is the date on which a company determines the shareholders eligible to receive a dividend. The ex-dividend date is important because any transaction on a stock needs to have been settled before the record date in order to be eligible for a dividend. Thus, you can purchase Rotork's shares before the 15th of August in order to receive the dividend, which the company will pay on the 23rd of September.

The company's next dividend payment will be UK￡0.0275 per share, on the back of last year when the company paid a total of UK￡0.072 to shareholders. Looking at the last 12 months of distributions, Rotork has a trailing yield of approximately 2.2% on its current stock price of UK￡3.26. We love seeing companies pay a dividend, but it's also important to be sure that laying the golden eggs isn't going to kill our golden goose! So we need to investigate whether Rotork can afford its dividend, and if the dividend could grow.

See our latest analysis for Rotork

Dividends are usually paid out of company profits, so if a company pays out more than it earned then its dividend is usually at greater risk of being cut. Rotork paid out 53% of its earnings to investors last year, a normal payout level for most businesses. Yet cash flows are even more important than profits for assessing a dividend, so we need to see if the company generated enough cash to pay its distribution. Fortunately, it paid out only 49% of its free cash flow in the past year.

It's encouraging to see that the dividend is covered by both profit and cash flow. This generally suggests the dividend is sustainable, as long as earnings don't drop precipitously.

Click here to see the company's payout ratio, plus analyst estimates of its future dividends.

Have Earnings And Dividends Been Growing?

Companies with consistently growing earnings per share generally make the best dividend stocks, as they usually find it easier to grow dividends per share. If business enters a downturn and the dividend is cut, the company could see its value fall precipitously. This is why it's a relief to see Rotork earnings per share are up 5.8% per annum over the last five years. While earnings have been growing at a credible rate, the company is paying out a majority of its earnings to shareholders. If management lifts the payout ratio further, we'd take this as a tacit signal that the company's growth prospects are slowing.