Today we'll take a closer look at Aspo Oyj (HEL:ASPO) from a dividend investor's perspective. Owning a strong business and reinvesting the dividends is widely seen as an attractive way of growing your wealth. On the other hand, investors have been known to buy a stock because of its yield, and then lose money if the company's dividend doesn't live up to expectations.

A high yield and a long history of paying dividends is an appealing combination for Aspo Oyj. We'd guess that plenty of investors have purchased it for the income. Before you buy any stock for its dividend however, you should always remember Warren Buffett's two rules: 1) Don't lose money, and 2) Remember rule #1. We'll run through some checks below to help with this.

Explore this interactive chart for our latest analysis on Aspo Oyj!

Payout ratios

Companies (usually) pay dividends out of their earnings. If a company is paying more than it earns, the dividend might have to be cut. Comparing dividend payments to a company's net profit after tax is a simple way of reality-checking whether a dividend is sustainable. Looking at the data, we can see that 106% of Aspo Oyj's profits were paid out as dividends in the last 12 months. Unless there are extenuating circumstances, from the perspective of an investor who hopes to own the company for many years, a payout ratio of above 100% is definitely a concern.

In addition to comparing dividends against profits, we should inspect whether the company generated enough cash to pay its dividend. Last year, Aspo Oyj paid a dividend while reporting negative free cash flow. While there may be an explanation, we think this behaviour is generally not sustainable.

Is Aspo Oyj's Balance Sheet Risky?

As Aspo Oyj's dividend was not well covered by earnings, we need to check its balance sheet for signs of financial distress. A rough way to check this is with these two simple ratios: a) net debt divided by EBITDA (earnings before interest, tax, depreciation and amortisation), and b) net interest cover. Net debt to EBITDA is a measure of a company's total debt. Net interest cover measures the ability to meet interest payments. Essentially we check that a) the company does not have too much debt, and b) that it can afford to pay the interest. With net debt of 5.01 times its EBITDA, Aspo Oyj could be described as a highly leveraged company. While some companies can handle this level of leverage, we'd be concerned about the dividend sustainability if there was any risk of an earnings downturn.

We calculated its interest cover by measuring its earnings before interest and tax (EBIT), and dividing this by the company's net interest expense. Net interest cover of 11.43 times its interest expense appears reasonable for Aspo Oyj, although we're conscious that even high interest cover doesn't make a company bulletproof. Adequate interest cover may make the debt look safe, relative to companies with a lower interest cover ratio. However with such a large mountain of debt overall, we're cautious of what could happen if interest rates rise.

Consider getting our latest analysis on Aspo Oyj's financial position here.

Dividend Volatility

From the perspective of an income investor who wants to earn dividends for many years, there is not much point buying a stock if its dividend is regularly cut or is not reliable. Aspo Oyj has been paying dividends for a long time, but for the purpose of this analysis, we only examine the past 10 years of payments. Its dividend payments have fallen by 20% or more on at least one occasion over the past ten years. During the past ten-year period, the first annual payment was €0.42 in 2009, compared to €0.44 last year. Dividend payments have grown at less than 1% a year over this period.

It's good to see some dividend growth, but the dividend has been cut at least once, and the size of the cut would eliminate most of the growth, anyway. We're not that enthused by this.

Dividend Growth Potential

With a relatively unstable dividend, it's even more important to see if earnings per share (EPS) are growing. Why take the risk of a dividend getting cut, unless there's a good chance of bigger dividends in future? Earnings have grown at around 8.4% a year for the past five years, which is better than seeing them shrink! Although per-share earnings are growing at a credible rate, virtually all of the income is being paid out as dividends to shareholders. This is okay, but may limit growth in the company's future dividend payments.

Conclusion

When we look at a dividend stock, we need to form a judgement on whether the dividend will grow, if the company is able to maintain it in a wide range of economic circumstances, and if the dividend payout is sustainable. It's a concern to see that the company paid out such a high percentage of its earnings and cashflow as dividends. We were also glad to see it growing earnings, but it was concerning to see the dividend has been cut at least once in the past. With this information in mind, we think Aspo Oyj may not be an ideal dividend stock.

Companies that are growing earnings tend to be the best dividend stocks over the long term. See what the 3 analysts we track are forecasting for Aspo Oyj for free with public analyst estimates for the company.

We have also put together a list of global stocks with a market capitalisation above $1bn and yielding more 3%.

We aim to bring you long-term focused research analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material.

If you spot an error that warrants correction, please contact the editor at editorial-team@simplywallst.com. This article by Simply Wall St is general in nature. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. Simply Wall St has no position in the stocks mentioned. Thank you for reading.