# Why dividend yield differs from site to site

One dividend, several yields. Forward or trailing, which dates, special payouts, SEC yield for funds, which price and currency — and what each source uses.

*https://stockmarketstack.com/guides/why-dividend-yield-differs · background to Dividend Trackers & Research*

**Answer:** Because dividend yield is a ratio of two choices, and sites choose differently. The top can be the latest regular payment annualised, the last twelve months actually paid, an indicated rate or a forecast, with special dividends in or out. The bottom can be last close, a live price or a fund's NAV. Funds add the SEC's standardised 30-day yield, which measures income earned rather than paid. Same stock, same day, several correct numbers.

## How it works

A dividend yield is a fraction, and both halves are decisions.

The **top** is a dividend per share for a year. Nobody has next year's figure, so every source picks
a stand-in:

- **Forward, or indicated:** the latest regular payment, annualised — a quarterly dividend times
  four, a monthly one times twelve. Nasdaq's glossary defines the indicated dividend as what would
  be paid over the next 12 months "if each dividend were the same amount as the most recent
  dividend", and the indicated yield as that annual figure divided by the price.
- **Trailing twelve months:** the sum of the payments that went ex-dividend, or were paid, in the
  last twelve months.
- **Forecast:** an analyst's or the vendor's estimate of each coming payment, added up.

Then three sub-choices that are rarely printed: whether a special dividend counts, which of a
dividend's dates moves it into or out of the window, and in which currency it is counted.

The **bottom** is a price: yesterday's close, a live or delayed quote, or for a fund its NAV. A
yield computed this morning on yesterday's close and one computed at noon on the live price differ
by however far the stock has moved.

Funds add a third family. The 30-day **SEC yield** is not a dividend divided by a price at all; it is
a standardised measure of income earned by the portfolio, net of expenses, and it can differ from
what the fund actually paid out by a wide margin.

None of this is error. It is several definitions sharing a name.

## Forward and trailing: the same payments, different numbers

Take a company paying $0.50 a quarter that announces a raise to $0.55, on a $50 share.

| Moment | Forward (latest × 4) | Trailing (last 4 paid) |
|---|---|---|
| Before the raise | $2.00 → 4.00% | $2.00 → 4.00% |
| Raise declared, not yet paid | $2.20 → 4.40% if the source annualises the declared amount; $2.00 → 4.00% if it waits for the payment | $2.00 → 4.00% |
| First raised payment made | $2.20 → 4.40% | $2.05 → 4.10% |
| A year later | $2.20 → 4.40% | $2.20 → 4.40% |

For most of the year after a raise, forward is higher than trailing; after a cut, lower. The gap
closes only when four payments at the new rate have rolled through the trailing window. A company
that pays the same amount every quarter shows the same yield on both — which is why the
disagreement appears precisely when something has just changed, which is when people look.

Annualising has a second weakness: uneven schedules. A company that pays a small interim and a
large final dividend, the common pattern outside the US, produces a forward figure that swings with
whichever payment was last. Multiplying a semi-annual interim by two understates the year; doing
the same with the final overstates it. A trailing sum is the safer default for those payers, and
the [dividend trackers](https://stockmarketstack.com/categories/dividend-trackers) section notes which products forecast each
payment rather than extrapolating.

## Which date moves the number

Every dividend has a declaration date, an ex-dividend date, a record date and a payment date. The
[ex-dividend date](https://stockmarketstack.com/glossary/ex-dividend-date) is the one that decides entitlement and the day the
price drops by roughly the dividend; the payment date, often weeks later, is when cash arrives.

A trailing window keyed to ex-dates and one keyed to payment dates contain different payments for
the weeks between the two: from the ex-date until the cash arrives, the first already counts a
payment the second does not, and at the far end of the window it has already dropped one the
second still holds. A forward figure can move on the declaration, before either.
[Corporate actions](https://stockmarketstack.com/glossary/corporate-action) shift the same comparison again: a dividend history
stored per share has to be divided by every split since, or the yield on it is out by the split
ratio — the trap [how to get split and dividend history as data](https://stockmarketstack.com/how-to/get-split-and-dividend-history-as-data)
covers.

## Special dividends

A special dividend is a payment the company itself labels one-off. Costco's 10-Q for the quarter to
26 November 2023 records both kinds: a regular quarterly dividend of $1.02 per share, declared on 18
October 2023, and a special cash dividend of $15.00 per share declared on 13 December 2023 and
payable on 12 January 2024.

Annualised, the regular dividend was $4.08. The special alone was more than three and a half times
that. For twelve months, any trailing yield that counted it showed Costco as a different kind of
stock from a forward yield built on the $1.02, and a forward yield that annualised the last payment
of any kind — $15 times four — would have been absurd. Sources handle this three ways: exclude
payments flagged as special, include everything paid, or leave it to whoever reads the number. Which
one a source chose is usually visible only by finding a stock with a special in the last year and
looking.

## Funds: SEC yield, distribution yield and trailing yield

A fund can show three yields on one page, and they measure different things.

**30-day SEC yield.** Form N-1A, Item 26(b)(4), prescribes it: over a 30-day or one-month period,
net investment income per share divided by the maximum offering price per share on the last day,
annualised as `2[((a − b)/cd + 1)^6 − 1]`, where `a` is dividends and interest earned, `b` expenses
accrued net of reimbursements, `c` the average daily number of shares entitled to dividends and `d`
the maximum offering price. Bond interest is computed from each holding's yield to maturity rather
than its coupon, and equity dividends are accrued. It measures what the portfolio is earning now,
after costs, not what it paid. Rule 482 requires a current yield in an open-end fund's advertisement
to use this computation, to name the length and end date of its base period, and to appear with
quotations of total return and no more prominently than they do.

**Trailing or distribution yield.** What was actually paid. iShares defines its 12-month trailing
yield as the income distributions of the past twelve months divided by the sum of the most recent
NAV and any capital gain distributions over the same period. Other issuers and data sites
annualise the latest distribution instead, and divide by NAV or by market price.

**Why they part.** On 6 October 2026 the iShares Core U.S. Aggregate Bond ETF's page showed a 30-day
SEC yield of 5.10%, a 12-month trailing yield of 4.21% and an average yield to maturity of 5.52%. On
31 August 2026 the iShares Core S&P 500 ETF's showed 0.94% and 1.06%. When rates or dividends are
moving, the 30-day figure reflects the portfolio held now and the trailing figure the portfolio held
over the past year. iShares itself warns that its distribution and trailing yields may vary period
to period with tax treatment, exceptional corporate actions, seasonality of underlying dividends,
large changes in shares outstanding and capital gain distributions.

**What a distribution is made of.** A fund distribution is not necessarily income. Rule 19a-1 makes a
management company paying from anything other than net income send a written statement saying
what portion of each payment per share came from net income, from accumulated realised gains on
sales of securities, and from paid-in surplus or other capital. A distribution yield counts all
three; the SEC yield counts only the first. For a fund paying out capital, the distribution yield
is the larger number and the less informative one.

## Which price, which currency, whose tax

**The price.** A stock yield is divided by a share price taken at some moment, and sites rarely say
which. A fund yield may be divided by NAV or by market price, which differ by the fund's premium or
discount.

**The currency.** Shell declares its dividend in US dollars. For the second quarter of 2026 it
declared $0.3906 per ordinary share and $0.7812 per American Depositary Share, each ADS representing
two shares, announced on 30 July 2026. Holders could elect dollars, euros or sterling; by default,
shares held through Euroclear Nederland were paid in euros, and shares on the register or in
Shell's corporate nominee in sterling, with the sterling and euro amounts to be announced on 7 September — after the ordinary
shares' ex-dividend date of 13 August and the ADSs' of 14 August. A yield on the London line divides
a dollar dividend, converted at a rate not yet known on the ex-date, by a sterling price; a yield on
the New York ADS divides a dollar dividend by a dollar price. Both are correct, and they need not
match on any given day.

**The tax.** A published yield is gross. [Dividend withholding](https://stockmarketstack.com/glossary/dividend-withholding) is a
property of the holder, not the security — the IRS starts foreign holders of US-source dividends at
30%, reduced where a treaty or a Code provision allows — so no shared database can publish a net
yield that is right for everybody. A tracker that shows an after-tax yield is applying a rate you
set. [Tracking foreign dividends and the tax withheld from them](https://stockmarketstack.com/how-to/track-foreign-dividends-and-withholding)
covers recording the difference.

## What each source says it uses

Each vendor's own documentation, read on 8 October 2026. *Not documented* means the vendor's public
pages do not say, not that no choice was made.

| Source | The dividend | Special dividends | The price |
|---|---|---|---|
| [Koyfin](https://stockmarketstack.com/tools/koyfin) | Four labelled yields: indicated (latest payment annualised), trailing twelve months, last twelve months, and next twelve months (consensus mean forecast) | TTM includes them; LTM excludes them | Last price |
| [Stock Rover](https://stockmarketstack.com/tools/stock-rover) | Stocks: the announced forward annual rate, reflected as soon as a change is declared. Funds: cash actually distributed over the trailing 12 months | Stocks: regular dividends only. Funds: included where the fund pays them. A separate Distribution Yield counts all cash | Current price, updated live while markets are open |
| [StockAnalysis](https://stockmarketstack.com/tools/stockanalysis) | Calculated in-house from dividend history that mostly comes from S&P Global; forward or trailing not documented | No yield at all when a stock's only payment in the past year was a special (changelog, 14 October 2023) | Not documented |
| [EODHD](https://stockmarketstack.com/tools/eodhd) | `DividendYield`: dividends over the last year (TTM). `ForwardAnnualDividendYield`: "expected", method not documented | Not documented | Current price, for the TTM figure |
| [Twelve Data](https://stockmarketstack.com/tools/twelve-data) | `forward_annual_dividend_yield`: a forward estimate, method not documented. `trailing_annual_dividend_rate`: the last 12 months | Not documented | Stock price, timing not documented |
| [Intrinio](https://stockmarketstack.com/tools/intrinio) | `dividendyield` is cash dividends per share over close price, and that per-share figure is "usually derived using the dividend paid in the most recent quarter" | Not documented | Close price |
| [Massive](https://stockmarketstack.com/tools/massive) | Ratios: "annual dividends per share divided by stock price", with "annual" not defined further | Its dividends endpoint labels each payment recurring, special, supplemental or irregular, so you can exclude them yourself | "Typically the closing price" |
| Yahoo Finance | Forward rate and yield footnoted "Data provided by Morningstar, Inc."; trailing figures "derived from multiple sources or calculated by Yahoo Finance". Neither method documented | Not documented | Not documented |

The trackers apply the same choices to a portfolio, and are the only products here that say anything
about tax.

| Tracker | The dividend | Special dividends | Gross or net |
|---|---|---|---|
| [Stock Events](https://stockmarketstack.com/tools/stock-events) | Shows both: FWD, what the company is expected to pay, generally over 12 months, method not specified; and TTM, payments actually made over the previous 12 months. Divided by the price of the primary issue | Excluded, in its published formula | Not documented |
| [Snowball Analytics](https://stockmarketstack.com/tools/snowball-analytics) | A "passive income" ratio: the dividends for the next year from the first day of the current month, over the portfolio's value excluding cash | Excluded: "only regular payments are taken into account" | Net, after the tax rate set in the portfolio's settings |
| [The Dividend Tracker](https://stockmarketstack.com/tools/the-dividend-tracker) | Annual dividend income: the last non-special dividend extrapolated over twelve months, once a stock has at least six payments of history. No yield definition published | Excluded | Not documented |
| [DividendMax](https://stockmarketstack.com/tools/dividendmax) | "The annual dividend payment" over "the prevailing share price"; whether that payment is forward, trailing or forecast is not stated | Not documented | Not documented |
| [DivvyDiary](https://stockmarketstack.com/tools/divvy-diary) | FWD figures are its forecasts for the next 12 months | Not documented | Gross by default; net if you enter your own tax rate and allowance |
| [Simply Safe Dividends](https://stockmarketstack.com/tools/simply-safe-dividends) | Not publicly documented: its help centre is behind a login | Not publicly documented | Not publicly documented |

Of all of these, only Stock Rover says when a forward figure moves: on declaration. None of the data
APIs or screeners says whether its yield is gross or net of withholding. And Koyfin printing four
labelled yields for one stock is the plainest statement on this list that a single ticker has
several correct ones.

## What you can do about it

**Ask two questions of any yield before comparing it with another.** Is the top forward, trailing or
forecast — and are specials in it? Is the bottom a close, a live price or a NAV, and in which
currency? If the page cannot answer, the number is not comparable with anything.

**Use trailing for what a stock has done and forward for what it is paying now, and say which.**
Right after a raise or a cut, the two should disagree; the size of the gap is the change, not an
error.

**For uneven payers, use a trailing sum or a per-payment forecast,** never the last payment
multiplied up.

**Check one special dividend.** Look up a stock that paid one in the last twelve months on the source
you rely on. If its trailing yield jumped and stayed up for a year, the source counts specials; if
its forward yield jumped, it annualises them, and every forward figure it prints deserves a second
look.

**For a fund, read the SEC yield for income and the distribution history for cash,** and if the
distribution yield is well above the SEC yield, find the fund's Rule 19a-1 notices before treating
the gap as income.

**For your own portfolio, compute the yield from your own records.** The dividends your broker
actually paid, net or gross as you need, divided by a price you chose, is the one figure you can
reconcile; [tracking dividends across brokers](https://stockmarketstack.com/how-to/track-dividends-across-brokers) covers
collecting them.

## Tools this bears on

- [Simply Safe Dividends](https://stockmarketstack.com/tools/simply-safe-dividends.md) — Analyst-set 0–100 dividend safety scores on US stocks and CEFs, with a tracker attached.
- [Snowball Analytics](https://stockmarketstack.com/tools/snowball-analytics.md) — A dividend calendar and forward-income projection wrapped around a portfolio tracker.
- [DividendMax](https://stockmarketstack.com/tools/dividendmax.md) — Analyst dividend forecasts for UK, European and US shares, with an income planner on top.
- [The Dividend Tracker](https://stockmarketstack.com/tools/the-dividend-tracker.md) — A US, Canadian and UK dividend tracker with broker auto-import, an MCP server and an API.

## FAQ

### What is the difference between forward and trailing dividend yield?

Forward yield annualises the most recent regular dividend — a quarterly payment times four — and divides by the price. Trailing yield adds up what was actually paid over the past twelve months and divides by the same price. After a raise the forward figure is higher; after a cut it is lower; for a company that pays the same amount every quarter they agree.

### Why do Yahoo Finance and other sites show a different dividend yield for the same stock?

Usually because one shows a forward yield and the other a trailing one, or because they divide by prices taken at different times. After that, check whether a special dividend is counted, which date each uses to register a new payment, and for a foreign stock which currency the dividend and the price are in.

### What is the difference between SEC yield and distribution yield?

The 30-day SEC yield is a standardised formula from Form N-1A — income earned over 30 days, less expenses, annualised and divided by the share price on the last day. A distribution yield is what the fund actually paid out, annualised or summed over twelve months, divided by NAV or price, and it can include realised gains or return of capital. On 6 October 2026 the iShares Core U.S. Aggregate Bond ETF showed a 5.10% SEC yield and a 4.21% twelve-month trailing yield.

### Do special dividends count in dividend yield?

It depends on the source. A trailing twelve-month sum includes whatever was paid unless the source excludes specials on purpose; a forward yield built from the last regular payment usually leaves them out. When Costco paid a $15 special in January 2024, its regular quarterly dividend was $1.02, so the special alone was more than three and a half times the regular dividend annualised.

### Is the dividend yield on a foreign stock before or after withholding tax?

Before, on every site that publishes one figure for everybody. Withholding depends on where the holder lives and what paperwork the broker holds, so a public yield cannot include it. For a US dividend paid to a foreign person the IRS starting rate is 30%, reduced where a treaty or a Code provision applies.

## Sources

1. [Form N-1A, Item 26(b)(4), Yield Quotation](https://www.sec.gov/about/forms/formn-1a.pdf) — Securities and Exchange Commission, 2023-12-11. The reference copy the SEC publishes as the current form, effective 11 December 2023; the yield formula in Item 26(b)(4) is unchanged.
2. [17 CFR 230.482, Advertising by an investment company](https://www.law.cornell.edu/cfr/text/17/230.482) — Legal Information Institute, Cornell Law School, read 2026-10-08
3. [17 CFR 270.19a-1, Written statement to accompany dividend payments by management companies](https://www.law.cornell.edu/cfr/text/17/270.19a-1) — Legal Information Institute, Cornell Law School, read 2026-10-08
4. [iShares Core S&P 500 ETF (IVV), fund page](https://www.ishares.com/us/products/239726/ishares-core-sp-500-etf) — BlackRock (iShares), read 2026-10-08
5. [iShares Core U.S. Aggregate Bond ETF (AGG), fund page](https://www.ishares.com/us/products/239458/ishares-core-total-us-bond-market-etf) — BlackRock (iShares), read 2026-10-08
6. [Costco Wholesale Corporation, Form 10-Q for the quarter ended 26 November 2023](https://www.sec.gov/Archives/edgar/data/909832/000090983223000065/cost-20231126.htm) — U.S. Securities and Exchange Commission (EDGAR), 2023-12-20. A filed record of a dividend already paid; nothing can supersede it.
7. [Shell plc Second Quarter 2026 Interim Dividend, Form 6-K Exhibit 99.1](https://www.sec.gov/Archives/edgar/data/0001306965/000117184326005059/exh_991.htm) — U.S. Securities and Exchange Commission (EDGAR), 2026-07-30
8. [NRA withholding](https://www.irs.gov/individuals/international-taxpayers/nra-withholding) — Internal Revenue Service, 2026-03-14
9. [Indicated dividend, glossary](https://www.nasdaq.com/glossary/i/indicated-dividend) — Nasdaq, read 2026-10-08
10. [Indicated yield, glossary](https://www.nasdaq.com/glossary/i/indicated-yield) — Nasdaq, read 2026-10-08
11. [Koyfin data dictionary](https://www.koyfin.com/help/koyfin-data-dictionary/) — Koyfin, 2026-07-01
12. [Valuation metrics](https://www.stockrover.com/metrics/valuation/) — Stock Rover, 2026-08-22
13. [Data sources](https://stockanalysis.com/data-sources/) — Stock Analysis, 2026-06-14
14. [Changelog](https://stockanalysis.com/changelog/) — Stock Analysis, read 2026-10-08
15. [Fundamentals glossary, common stock](https://eodhd.com/financial-academy/financial-faq/fundamentals-glossary-common-stock) — EODHD, 2026-06-13
16. [API documentation, statistics endpoint](https://twelvedata.com/docs) — Twelve Data, read 2026-10-08
17. [Data tag dividendyield](https://data.intrinio.com/data-tag/dividendyield) — Intrinio, read 2026-10-08
18. [Data tag cashdividendspershare](https://data.intrinio.com/data-tag/cashdividendspershare) — Intrinio, read 2026-10-08
19. [Ratios, REST API documentation](https://massive.com/docs/rest/stocks/fundamentals/ratios.md) — Massive, read 2026-10-08
20. [Dividends, REST API documentation](https://massive.com/docs/rest/stocks/corporate-actions/dividends.md) — Massive, read 2026-10-08
21. [The Coca-Cola Company (KO), key statistics](https://finance.yahoo.com/quote/KO/key-statistics/) — Yahoo Finance, read 2026-10-08
22. [Dividend yield, help article](https://stockevents.app/en/help/dividend-yield) — Stock Events, 2025-01-02
23. [Review of key portfolio indicators](https://help.snowball-analytics.com/review-of-key-portfolio-indicators/) — Snowball Analytics, 2024-08-26
24. [Overview, help centre](https://help.snowball-analytics.com/overview/) — Snowball Analytics, read 2026-10-08
25. [FAQs](https://www.thedividendtracker.com/faqs) — The Dividend Tracker, read 2026-10-08
26. [Coca-Cola Co dividends](https://www.dividendmax.com/united-states/nyse/beverages/coca-cola-co/dividends) — DividendMax, read 2026-10-08
27. [Help](https://divvydiary.com/en/help) — DivvyDiary, read 2026-10-08

*Last updated 2026-10-08. A reference page, corrected in place — not a dated post.*