What dividend yield measures and what it does not
Dividend yield is the cash a share pays over a year expressed as a percentage of what that share costs. It is the income return on a stock, and it is directly comparable across companies, across sectors and against a bond's coupon yield — which is precisely why income investors screen on it first.
What it does not measure is total return. A stock yielding 6% that loses 10% of its price has lost you money. Yield is one of two components of an equity's return, the other being price change, and the two are linked: yield is a ratio with price in the denominator, so a falling price mechanically raises the yield. The highest-yielding names in any screen are usually there because the market marked them down, not because the board was generous.
The yield also moves for a second, entirely different reason: the board changing the dividend. Distinguishing a yield that rose because the price fell from a yield that rose because the payment increased is the whole job, and it is why this calculator gives you both a forward and a trailing figure rather than one number.
Forward yield takes the most recent declared payment and annualises it — a $0.55 quarterly dividend becomes $2.20 a year. It answers "what will this pay me from here, if nothing changes?" Trailing yield adds up the dividends actually paid over the previous twelve months. It answers "what did this pay?" They diverge whenever the dividend has moved in the past year, and the sign of the divergence tells you which way.
The formula and the three conventions that trip people up
The arithmetic is a single division: annual dividend per share divided by price per share, times 100 to express it as a percentage. Everything difficult about dividend yield is in deciding what goes in the numerator.
Convention one: which dividend. A quarterly payer that has just raised its dividend from $0.50 to $0.55 has a trailing twelve-month total of, say, $2.05 (three old payments and one new) but a forward run rate of $2.20. Screening sites differ on which they publish, so at a price of $51.25 the same share shows a 4.00% yield on one site ($2.05 ÷ $51.25) and a 4.29% yield on another ($2.20 ÷ $51.25), with no disagreement about any fact. Always check which basis you are reading before comparing two names.
Convention two: special dividends. A one-off special payment belongs in the trailing figure — it was paid — but not in the forward run rate, because it will not repeat. A company that paid a $3.00 special last year can show a spectacular trailing yield and an ordinary forward yield. If your trailing figure is far above your forward figure and you know of no cut, look for a special.
Convention three: which price. Use the current market price for a yield you could buy at today. Use your own purchase price and you get yield on cost, which measures how a position you already own has developed. The two answer different questions, and yield on cost is higher than the current yield exactly when you paid less than today's price — no more, no less.
For funds rather than individual shares there is a further wrinkle. A distribution yield on an ETF simply annualises recent distributions, and for bond funds the SEC prescribes a separate standardised calculation, the 30-day SEC yield defined in Form N-1A, which is based on income earned net of expenses rather than cash distributed. The two can differ substantially for the same fund, so compare like with like.
Worked example: 200 shares of a $52 stock paying $0.55 a quarter
You own 200 shares bought at an average cost of $40. The company declared a $0.55 quarterly dividend, and over the past twelve months it actually paid $2.08 per share. The stock trades at $52.
- Annualise the latest payment. $0.55 × 4 = $2.20 per share per year. This is the forward dividend.
- Forward yield. $2.20 ÷ $52 = 0.0423077, so 4.231%.
- Trailing yield. $2.08 ÷ $52 = 0.04 exactly, so 4.000%. The forward yield sits above the trailing yield, which is what a recent raise looks like.
- How big was the raise? $2.20 ÷ $2.08 − 1 = 0.0577, so the run rate is 5.77% above the past twelve months. Because only some of the trailing quarters were at the old rate, the actual per-quarter increase was larger than 5.77%.
- Your annual income. $2.20 × 200 shares = $440.00 a year.
- Per payment and per month. Each quarterly cheque is $0.55 × 200 = $110.00. Averaged across the year that is $440 ÷ 12 = $36.67 a month — an average, not a schedule, since the cash arrives four times a year.
- Yield on cost. $2.20 ÷ $40 = 5.500%. You collect 5.5% on the money you actually committed while a new buyer collects 4.231%, because you paid $40 and they pay $52.
Notice that if the price fell to $44 tomorrow, your income would not change by a cent — you would still receive $440 — but the forward yield a new buyer sees would jump to $2.20 ÷ $44 = 5.000%. Yield is a statement about price, not about your cash flow.
How to read the yield you get
Compare against the right benchmark. A yield only means something next to something else: the broad market's yield, the sector's yield, the company's own historical yield range, and the yield on a comparable-maturity government bond. A utility at 4% and a software company at 4% are not telling you the same thing, because the utility's payout ratio is probably twice the software company's.
As a rule of thumb, once an ordinary operating company yields into double digits, treat the yield as a question rather than an answer. The calculator flags yields over 10% for this reason. Such a yield is only sustainable if the market is wrong about the payout, and the market is usually pricing an expected cut. Structurally high-yield vehicles — REITs, business development companies, mortgage trusts and covered-call funds — are the legitimate exceptions, and each has its own reason.
Check cover before you trust the income. Two ratios settle most cases. The earnings payout ratio is dividend per share divided by earnings per share; work the denominator out with the earnings per share calculator. Better still is cash cover, because dividends are paid from cash rather than accounting profit — the free cash flow calculator gives you the figure a board actually looks at. As a rule of thumb, a payout ratio comfortably under about two thirds of earnings and fully covered by free cash flow is the profile of a dividend that survives a bad year.
A forward yield below the trailing yield deserves an explanation. Either the dividend was cut, or a special payment in the trailing window is not repeating. Both are legitimate; only one is bad news. The calculator states which direction the gap runs, but only you can find the cause in the dividend history.
Yield without growth is a bond in disguise. A 5% yield that never rises loses purchasing power to inflation every year. A 3% yield growing 7% a year overtakes it on income in the eighth year — 1.07 raised to the eighth power is 1.72, and 3% × 1.72 clears 5% — and keeps going — which is what the dividend reinvestment calculator projects over a full holding period.
Forward yield for a quarterly dividend at common prices
| Quarterly dividend | $25 share | $50 share | $75 share | $100 share |
|---|---|---|---|---|
| $0.25 | 4.00% | 2.00% | 1.33% | 1.00% |
| $0.50 | 8.00% | 4.00% | 2.67% | 2.00% |
| $0.75 | 12.00% | 6.00% | 4.00% | 3.00% |
| $1.00 | 16.00% | 8.00% | 5.33% | 4.00% |
The diagonal of 4.00% entries shows the same yield reached four different ways. Yield alone cannot tell you whether a company pays generously or is priced cheaply — only the pair of numbers can.
Mistakes that produce a wrong yield
- Multiplying an annual dividend by four. If a screening site quotes $2.20 as the dividend, that is already the annual figure. Multiplying it by the frequency again gives 16.9% instead of 4.2%. Enter the per-payment amount here, not the annual one.
- Mixing currencies. A dividend declared in pence against a price in pounds, or a US-dollar ADR dividend against a local-currency price, is off by a factor of 100 or by the exchange rate. Both figures must be in the same unit.
- Using the ex-dividend price with the pre-ex dividend. On the ex-date the price typically drops by roughly the dividend. Take both numbers from the same moment.
- Counting a special dividend in the forward run rate. Specials belong in the trailing figure only. Including one inflates the forward yield and the income projection that follows from it.
- Ignoring withholding tax on foreign shares. Many countries withhold tax at source on dividends paid to non-residents, at a rate set by domestic law and often reduced by a tax treaty. The gross yield is not what lands in your account; look up the treaty rate that applies to you.
- Reading yield as a ranking of quality. The highest yield in a sector screen is frequently the company the market trusts least. Cover and growth, not the headline percentage, separate the two cases.
Key terms
- Declaration date
- The day the board formally announces a dividend, its amount and its pay date. Until then there is no dividend to annualise.
- Ex-dividend date
- The first day a share trades without entitlement to the next dividend. Buy on or after this date and the seller keeps the payment.
- Payout ratio
- Dividend per share divided by earnings per share. Above 100% the company is paying out more than it earned, funding the gap from cash reserves or borrowing.
- Yield on cost
- Annual dividend divided by the price you originally paid. It rises for any position whose dividend grows, and it is only meaningful for a holding you already own.
- Distribution yield
- The fund equivalent of dividend yield: recent distributions annualised over the fund's price or net asset value. It includes any return of capital, which a stock dividend yield does not.
Where yield fits among the other income measures
Dividend yield is the entry point to a family of measures, each answering a narrower question. Payout ratio asks whether the dividend is affordable. Dividend growth rate asks whether it will keep pace with inflation. Yield on cost asks how a holding has developed. Total return asks what you actually earned, and is the only one that nets price change against income.
For valuation rather than screening, the dividend discount model inverts the yield relationship: instead of dividing the dividend by the price you observe, you divide the expected dividend by the return you require, less the growth you expect, to get the price you should pay. That required return usually comes from the capital asset pricing model, which the CAPM cost of equity calculator handles. The model is exquisitely sensitive to the growth assumption, which is why practitioners use it as a cross-check rather than an answer.
One structural point worth keeping in mind: a dividend is only one of two ways a company returns cash. Buybacks return cash by reducing the share count instead of paying you directly, and they do not appear in any yield figure. Two companies returning identical cash to shareholders can show a 4% yield and a 0% yield depending purely on which route the board chose. Analysts fold both into a shareholder yield precisely to avoid mistaking a policy choice for a difference in generosity. If you want to know how much cash the business is generating to fund either route, start from operating cash flow and capital expenditure rather than from the dividend itself.
Finally, remember what a dividend is under company law: a discretionary distribution of profits that a board may reduce or suspend at any time. Contractual coupons on debt are not discretionary; dividends are. Yield is the compensation the market demands for accepting that discretion, and reading it as a guaranteed rate is the error that unites most income-investing disappointments.