A high yield is not always a good sign. How dividends work structurally.
A dividend distributes part of what a company earned to its shareholders. Cash that was inside the company moves out, so the company's assets fall by that amount. That is why the share price generally drops by roughly the dividend on the day the entitlement disappears. Receiving a dividend is not purely additional gain.
Dividend yield is the dividend divided by the share price. It rises when the numerator grows, and equally when the denominator falls. A stock whose price has collapsed on bad news suddenly showing a high yield is the classic case. Looking at yield alone cannot distinguish the two.
Receiving a dividend requires being on the shareholder register on a set record date. Since settlement takes days after a trade, buying on the record date itself is too late. The day the entitlement disappears is the ex-dividend date, and the price opens adjusted by the dividend. Buying for a dividend and missing it through a date mix-up is common.
To judge whether a dividend is stable, look at how much of earnings goes out as dividends. When that share is very high, even a small fall in earnings makes the payment hard to maintain. Measuring against cash flow rather than earnings is often more accurate. A dividend maintained by borrowing is unlikely to last.
Dividends are decided by the company and can be reduced or suspended at any time. Even companies that raised them for years cut when conditions worsen. Treating dividends as living expenses needs to account for that. This explains the structure and does not address which stocks are appropriate.
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