Today we'll take a closer look at Avi-Tech Electronics Limited (SGX:BKY) 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. If you are hoping to live on the income from dividends, it's important to be a lot more stringent with your investments than the average punter.

A high yield and a long history of paying dividends is an appealing combination for Avi-Tech Electronics. It would not be a surprise to discover that many investors buy it for the dividends. 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.

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Payout ratios

Dividends are usually paid out of company earnings. If a company is paying more than it earns, then the dividend might become unsustainable - hardly an ideal situation. So we need to form a view on if a company's dividend is sustainable, relative to its net profit after tax. In the last year, Avi-Tech Electronics paid out 56% of its profit as dividends. A payout ratio above 50% generally implies a business is reaching maturity, although it is still possible to reinvest in the business or increase the dividend over time.

We also measure dividends paid against a company's levered free cash flow, to see if enough cash was generated to cover the dividend. Avi-Tech Electronics paid out a conservative 40% of its free cash flow as dividends last 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.

While the above analysis focuses on dividends relative to a company's earnings, we do note Avi-Tech Electronics's strong net cash position, which will let it pay larger dividends for a time, should it choose.

We update our data on Avi-Tech Electronics every 24 hours, so you can always get our latest analysis of its financial health, here.

Dividend Volatility

One of the major risks of relying on dividend income, is the potential for a company to struggle financially and cut its dividend. Not only is your income cut, but the value of your investment declines as well - nasty. Avi-Tech Electronics has been paying dividends for a long time, but for the purpose of this analysis, we only examine the past 10 years of payments. This dividend has been unstable, which we define as having been cut one or more times over this time. During the past ten-year period, the first annual payment was S$0.02 in 2010, compared to S$0.023 last year. Dividends per share have grown at approximately 1.4% per year over this time. Avi-Tech Electronics's dividend payments have fluctuated, so it hasn't grown 1.4% every year, but the CAGR is a useful rule of thumb for approximating the historical growth.