Dividend yield measures what percentage of a stock's price you receive each year as dividends. It is the income investor's headline metric — and also the most dangerous one when read in isolation.
Dividend yield = (annual dividend per share / price) × 100A stock at €50 paying €2 a year yields 4%. Simple — with a trap hidden in the denominator: since the price sits below the line, yield rises when the stock falls. A company whose price collapses 40% will see its dividend yield soar without raising the payment by a cent.
There is no perfect number; there is a reasonable range per sector:
The right question is never "how much does it yield?" but "is it sustainable and will it grow?". A 3% that rises every year is worth more over a decade than a frozen or at-risk 8%.
Yield is calculated on today's price; yield on cost, on what you paid. A company bought at €38 that now pays €0.80 yields 2.1% on your cost even if the market sees 0.7%. Current yield helps you decide new purchases; yield on cost measures what dividend growth has done for your position.
The income investor's most expensive mistake is sorting the market by yield and buying at the top. Abnormally high yields are usually a symptom: a price crushed by real problems, an unsustainable payout, or a business without growth. Before buying a striking yield, always cross-check the payout ratio, cash flow and dividend growth history.
Between 2% and 5% is usually healthy ground, depending on the sector. Above 7–8% in developed markets, the statistics work against you: analyse before buying.
Only if the payment is sustainable. Collecting 8% from a position losing value year after year is receiving your own capital back — with a tax toll included.
Over a long horizon, growth usually wins: a moderate yield that rises every year ends up beating a static high yield in both annual income and capital. Over a short horizon, or with immediate income needs, the balance shifts.