SEC Yield

Definition

The 30-day SEC yield is a standardized yield figure that the U.S. Securities and Exchange Commission requires a fund to calculate the same way as every other fund whenever it advertises its yield, so investors can compare one fund against another on a level field. It is sometimes called the "standardized yield" for exactly that reason. (This page covers bond and stock funds; money-market funds quote a different standardized figure, the 7-day yield.)

The calculation takes the interest and dividend income the fund actually earned over the most recent 30 days, subtracts the fund's expenses over that period, and then annualizes the result relative to the fund's price. In simplified form:

SEC Yield = ((Income earned − Expenses) / Shares) / NAV per share, annualized

Three features make it distinctive:

• It is net of expenses. The fund's management fee is already subtracted, so, all else equal, a cheaper fund tends to show a higher SEC yield than an otherwise-identical expensive one.
• It is based on a fixed 30-day window. It reflects the income the portfolio is currently generating, not what it paid out over the past year.
• It is calculated on net asset value (NAV). The yield is measured against the fund's per-share NAV, which keeps the figure comparable across funds regardless of share price.

Because every fund that quotes it must run the same formula, the SEC yield is the most comparable of the yield numbers when lining up two funds side by side — standardized and hard to game, though still a backward-looking statistic rather than a forecast. The full mechanics are in How It's Calculated below.

Why It Matters

The SEC yield exists to solve a real problem: the other yield numbers are easy to game. A fund company can advertise a "trailing 12-month yield" that reflects a big one-time payout, or a "distribution rate" that annualizes the most recent — possibly inflated — distribution. Neither has to reflect what the portfolio is truly earning right now. The SEC yield is harder to dress up because the SEC dictates the inputs and the math.

It is worth understanding how it differs from the two numbers investors see most:

• Distribution rate takes the most recent distribution, annualizes it, and divides by price. It reflects what the fund *pays out*, which can include return of capital and realized gains, not just earned income. See distribution rate for the full picture.
• Trailing 12-month (TTM) yield sums the actual distributions over the past year and divides by current price. It is backward-looking and can be skewed by special distributions.
• SEC yield looks only at income earned in the last 30 days, net of fees. It is the freshest snapshot of what the portfolio currently earns and the most conservative of the three — though still an annualized 30-day history, not a forecast.

The gap between these numbers is where the real information lives. When a fund's distribution rate is much higher than its SEC yield, the fund is paying out more than it is earning as income — often by returning capital or distributing option premium. That is not automatically bad, but it is something the SEC yield forces into the open.

The number does have limits. For option-income funds that write options directly, the SEC yield is famously misleading — but low, not high. The premium those funds collect by selling options is treated as a capital transaction, not as interest or dividend income, so it does not count in the SEC yield formula. A fund advertising a 12% distribution rate can therefore post an SEC yield near 1% or even lower. The tiny SEC yield is not a red flag by itself; it simply means the SEC formula was never designed to capture how those funds generate cash. (Structure matters, though: funds that collect option income through equity-linked notes — ELNs — report that cash as interest income, so their SEC yields can sit close to their distribution rates.)

How It's Calculated

Every fund that quotes an SEC yield runs the same formula, and that shared recipe is what makes it comparable. The sketch below is a simplified conceptual version — the official formula in SEC Form N-1A also prescribes semiannual compounding, average shares outstanding, and the maximum offering price:

              income earned − expenses  (both over the trailing 30 days)
SEC yield  =  ------------------------------------------------------------ , annualized
                        NAV per share × shares outstanding

Walk through the four moving parts:

• Income earned is the interest and dividends the fund's holdings actually generated during the trailing 30-day window — not what the fund paid out, and not a forecast. Only genuine income counts here.
• Expenses are the fund's operating costs accrued over that same window. They are subtracted first, which is why the SEC yield is always a net-of-fee number.
• NAV per share × shares anchors the yield to the fund's net asset value rather than its market price, so funds stay comparable regardless of any premium or discount to NAV.
• Annualized means the 30-day figure is scaled up — the SEC uses a compounding convention — into an annual percentage you can read like any other yield.

Three deliberate design choices make the number standardized and hard to game:

1. Net of expenses. Because fees come out before the yield is struck, a fund can't flatter its yield by glossing over its costs. All else equal, a cheaper fund reports a higher SEC yield than an otherwise-identical expensive one — the discipline is built in.
2. A fixed trailing 30-day window. The figure reflects what the current portfolio is earning right now, so a fund can't lean on a big one-time payout from months ago the way a distribution rate or trailing-12-month number can.
3. Income only. Realized capital gains, return of capital, and option premium are all excluded — only interest and dividends count. A fund therefore can't pad its SEC yield by handing back your own capital and labeling it "yield."

That last point is the crux of why the SEC yield is harder to dress up than the distribution rate or a trailing yield: those numbers count every dollar a fund sends you, whatever its source, while the SEC yield counts only the dollars the portfolio genuinely earned.

Example

The figures below are illustrative examples chosen to show the relationships — they are not live quotes. Real numbers move daily, so look each fund up for current data. What matters is the *pattern*: how far a fund's headline payout sits above the income it actually earns.

For the three traditional dividend ETFs — SCHD, a dividend-growth fund; VYM, a broad high-dividend fund; and SPHD, a high-dividend, low-volatility fund that pays monthly — all three yield measures cluster in the same neighborhood. That closeness is itself the signal: the payout is being funded by real interest and dividend income, so the standardized SEC number and the marketing-friendly distribution rate barely differ. SPHD's slightly wider gap reflects the occasional realized gain in its monthly payout.

SPYI, an option-income fund that writes index options directly, is the opposite story. Its distribution rate towers over its SEC yield because the bulk of its cash comes from selling options — premium the SEC formula treats as a capital transaction, not as income. A roughly 1% SEC yield sitting next to a 12% distribution rate is not a red flag by itself; it is simply the SEC yield doing its job, quietly revealing that the big payout isn't coming from dividends and interest. The gap is the message: a small gap means the payout is earned income, while a large gap means much of the cash is option premium, realized gains, or return of capital — dollars the SEC formula deliberately leaves out. Read on its own, SPYI's distribution rate would badly overstate how much the portfolio truly earns.

One caveat keeps the pattern honest: not every option-income fund shows the giant gap. JEPI, for example, collects its option-related cash through equity-linked notes (ELNs), and ELN payments count as *interest income* under the SEC formula — so JEPI's SEC yield runs close to its distribution rate. The tiny-SEC- yield signature belongs to funds that sell index options directly, like SPYI and QQQI, where the premium never enters the income line.

Common Mistakes

• Comparing a covered-call fund's distribution rate to a plain fund's SEC yield. This is the single most common error, and it makes the wrong fund look better. A covered-call fund's 8% distribution rate and a dividend ETF's 3.5% SEC yield are measuring different things entirely — payout versus earned income — so the comparison is apples to oranges. Compare SEC yield to SEC yield, and distribution rate to distribution rate.
• Assuming the SEC yield is the cash you'll actually receive. It is not a promise of future payments. It estimates the income the current portfolio generates; your actual distributions can be higher or lower and may include return of capital or capital gains. Many funds pay out noticeably more than their SEC yield — that extra cash simply isn't earned income.
• Ignoring that option premium isn't "income" in the SEC formula. For covered-call and option-income ETFs, the premium collected by selling options is the whole point of the strategy, yet the SEC formula counts it as a capital transaction, not as interest or dividends. That is exactly why these funds post a tiny SEC yield next to a huge distribution rate. The low number is a quirk of the formula, not a verdict on the fund.
• Ignoring the SEC yield because it looks "too low." A conservative-looking SEC yield is often the honest number. If a fund's distribution rate towers over its SEC yield, that gap is telling you something, not hiding something.
• Comparing SEC yields from different dates. Because it is a 30-day snapshot, the figure moves with interest rates and portfolio changes. Only compare funds' SEC yields measured as of roughly the same date.
• Forgetting it is net of fees. Two funds with identical holdings but different expense ratios will show different SEC yields. That is a feature — the cheaper fund genuinely leaves more income in your pocket.

FAQ

What is a good SEC yield?

There is no universal threshold, because a "good" SEC yield depends entirely on the fund's asset class and the current interest-rate environment. A broad dividend ETF might show an SEC yield of 1.5-4%, a high-yield bond fund could be 6-8%, and a money market fund tracks short-term rates. The more useful test is comparing a fund's SEC yield against its own peers over the same date, and checking how far it sits below the fund's distribution rate. A number that is close to the distribution rate signals the payout is funded by real income.

Why is a fund's SEC yield lower than its distribution rate?

Because they measure different things. The SEC yield counts only interest and dividend income earned over the last 30 days, net of expenses. The distribution rate annualizes whatever the fund most recently paid out — which can also include realized capital gains, option premium, and return of capital. When the distribution rate is much higher, the fund is paying out more than it earns as income, and the difference is coming from those other sources rather than from dividends and interest.

Why do covered-call ETFs have such a low SEC yield?

Covered-call and option-income ETFs earn most of their cash by selling options and collecting premium. Under the SEC's formula, that premium is treated as a capital transaction, not as interest or dividend income, so it is excluded from the SEC yield. The result is that a fund like SPYI or QQQI, which writes index options directly, can advertise a double-digit distribution rate while showing an SEC yield near 1%. The exception is ELN-based funds such as JEPI: because equity-linked-note payments count as interest income in the formula, their SEC yields land close to their distribution rates. Either way, it reflects how the formula classifies the cash, not necessarily a problem with the fund.

Is the SEC yield before or after fees?

After. The SEC yield is calculated net of the fund's expenses — the management fee and other operating costs are subtracted before the yield is annualized. That is one reason two funds holding nearly identical portfolios can post different SEC yields: the one with the lower expense ratio keeps more income and reports a higher yield. It also means the SEC yield reflects the income you would actually earn after the fund takes its cut, which a raw dividend yield on the underlying holdings does not.

What is the difference between SEC yield and dividend yield?

A plain "dividend yield" usually means trailing dividends (or the most recent dividend annualized) divided by the current share price. It is not standardized — different sites compute it differently — and it isn't necessarily net of the fund's expenses. The SEC yield is the regulated, net-of-expense, 30-day version built for apples-to-apples comparison. For a simple stock-dividend ETF the two are usually close; for bond funds or option-income funds they can diverge sharply. When you want to compare two funds fairly, reach for the SEC yield.

Is the SEC yield the same as the trailing 12-month yield?

No. The trailing 12-month yield sums the fund's actual distributions over the past year and divides by the current price, so it is backward-looking. The SEC yield looks only at income earned in the most recent 30 days, net of fees, making it more current and more conservative. The two can differ substantially, especially after a change in interest rates or a large one-time distribution.