Readers hoping to buy Mercury NZ Limited (NZSE:MCY) for its dividend will need to make their move shortly, as the stock is about to trade ex-dividend. The ex-dividend date is one business day before the record date, which is the cut-off date for shareholders to be present on the company's books to be eligible for a dividend payment. 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 Mercury NZ's shares before the 11th of September in order to receive the dividend, which the company will pay on the 30th of September.

The company's upcoming dividend is NZ$0.1647058 a share, following on from the last 12 months, when the company distributed a total of NZ$0.24 per share to shareholders. Based on the last year's worth of payments, Mercury NZ has a trailing yield of 3.7% on the current stock price of NZ$6.48. 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 Mercury NZ can afford its dividend, and if the dividend could grow.

See our latest analysis for Mercury NZ

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. Mercury NZ distributed an unsustainably high 112% of its profit as dividends to shareholders last year. Without more sustainable payment behaviour, the dividend looks precarious. Yet cash flow is typically more important than profit for assessing dividend sustainability, so we should always check if the company generated enough cash to afford its dividend. The company paid out 96% of its free cash flow over the last year, which we think is outside the ideal range for most businesses. Cash flows are usually much more volatile than earnings, so this could be a temporary effect - but we'd generally want to look more closely here.

Cash is slightly more important than profit from a dividend perspective, but given Mercury NZ's payouts were not well covered by either earnings or cash flow, we would be concerned about the sustainability of this dividend.

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

Have Earnings And Dividends Been Growing?

Businesses with shrinking earnings are tricky from a dividend perspective. If earnings fall far enough, the company could be forced to cut its dividend. That's why it's not ideal to see Mercury NZ's earnings per share have been shrinking at 4.5% a year over the previous five years.

Another key way to measure a company's dividend prospects is by measuring its historical rate of dividend growth. Mercury NZ has delivered an average of 6.3% per year annual increase in its dividend, based on the past 10 years of dividend payments. That's intriguing, but the combination of growing dividends despite declining earnings can typically only be achieved by paying out a larger percentage of profits. Mercury NZ is already paying out a high percentage of its income, so without earnings growth, we're doubtful of whether this dividend will grow much in the future.

To Sum It Up

Has Mercury NZ got what it takes to maintain its dividend payments? It's looking like an unattractive opportunity, with its earnings per share declining, while, paying out an uncomfortably high percentage of both its profits (112%) and cash flow as dividends. Unless there are grounds to believe a turnaround is imminent, this is one of the least attractive dividend stocks under this analysis. It's not an attractive combination from a dividend perspective, and we're inclined to pass on this one for the time being.

Having said that, if you're looking at this stock without much concern for the dividend, you should still be familiar of the risks involved with Mercury NZ. Every company has risks, and we've spotted 1 warning sign for Mercury NZ you should know about.

Generally, we wouldn't recommend just buying the first dividend stock you see. Here's a curated list of interesting stocks that are strong dividend payers.

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.