Income concepts and terms
Expense Ratios and What They Cost Income
The annual percentage a fund deducts from its own assets before anything reaches you — small measured against a price, large measured against a yield.
A fund's expense ratio is its annual operating cost expressed as a percentage of average net assets: the management fee plus administration, custody, legal, audit and any 12b-1 distribution fee. It is never billed. It accrues daily and is deducted from fund assets, so the published net asset value, the quoted yield and the reported total return are all already net of it. Because an income fund pays out of a modest gross yield, the same expense ratio consumes a far larger share of the income than of the capital, and several real costs sit outside the ratio entirely.
Reference
The labels above place this income type before you read a word. The first is the mechanism — how the money actually reaches you, whether by lending it out, owning a slice of something, renting an asset, licensing a right, selling an option or owning a business somebody else runs. The second says whether the income keeps arriving on its own once it is running, or whether it needs work from you to keep coming. Both are descriptions of how the thing is built, not verdicts on it.
What it measures
The expense ratio is annual fund operating expenses divided by average net assets, published in the prospectus fee table and updated each year in the annual report. It bundles the investment management fee with administration and transfer-agency costs, custody, legal and audit fees, trustee or director compensation, and any 12b-1 fee charged to pay for distribution and marketing.
It is deducted from the fund's assets, not billed to you, which is why it never appears as a line item on a brokerage statement. The mechanism is a slightly lower net asset value every single day rather than a periodic invoice.
Every performance and yield figure the fund publishes — total return, 30-day SEC yield, distribution rate — is already stated net of the expense ratio. Subtracting the ratio again from a published yield double-counts the cost.
Because the fee is a percentage, its dollar cost scales with position size: a larger holding pays a proportionally larger dollar fee for the same work performed by the manager, whose costs of running the portfolio do not scale in the same way.
The arithmetic against income
Net yield runs approximately equal to gross portfolio yield minus the expense ratio, because the fee is paid out of the income the portfolio collects before any distribution goes out. The number that matters for an income holding is not the fee in isolation but expense ratio divided by gross yield — the share of the income the fee consumes.
On assumed inputs, not market rates: a 0.60% expense ratio against a 4.00% gross yield consumes 15% of the income (0.60 divided by 4.00). The same 0.60% measured against a 10% total return is only 6% of it. The fee is unchanged; the base it is measured against is what moved.
The effect compounds over time. The ending multiplier after n years is (1 + return − expense ratio) raised to the n, against (1 + return) raised to the n without the fee, so the gap between the two widens with time rather than staying a fixed proportion.
For a cash or short-bond fund, where the gross yield is set almost entirely by the market and the manager has little room to differ from a peer, the expense ratio becomes the single largest controllable variable in net yield. Two funds holding near-identical portfolios will differ in net yield by close to the difference in their expense ratios, making the ratio a fair comparison only between funds doing substantially the same thing.
What the ratio leaves out
Brokerage commissions and bid-ask spreads paid inside the portfolio are not part of the expense ratio. A high-turnover fund absorbs trading costs that show up only in its realized performance, never in the fee table.
Interest expense on leverage is a major cost in levered closed-end funds. Sponsors commonly publish the ratio both including and excluding this interest, and the all-in figure can run to several times the base management fee.
Acquired fund fees and expenses — the cost of funds held inside the fund, as with a fund of business development companies — must be disclosed in the fee table and can make a total expense ratio look startling next to the management fee alone. Sales loads, purchase and redemption fees, short-term trading fees, and the commission or spread paid to buy the fund sit entirely outside the ratio as well.
Fee waivers are contractual and temporary: the prospectus shows a gross ratio, a net ratio, and the waiver's expiry date, and the net figure applies only until that date. Advisory wrap fees and platform fees stack on top of all of this, while securities-lending revenue can partially offset fund costs without being netted into the published ratio — it appears separately in the annual report.
Where it misleads
Set against a total return, an expense ratio looks trivial. Set against a distribution, the identical number is measured against a much smaller base, which is why income products are where fees bite hardest.
The lowest published ratio is not always the lowest total cost. A cheap fund with a wide bid-ask spread, a materially different underlying portfolio, or punishing turnover can cost more in practice than a fund with a higher stated ratio.
Comparing a levered closed-end fund's all-in ratio against an unlevered ETF's management fee is not a like-for-like comparison, since part of the closed-end fund's cost is buying leverage that changes the risk profile of the portfolio, not just running it.
A published 30-day SEC yield is already net of expenses; treating it as gross and subtracting the ratio a second time understates the fund's yield by double-counting the fee. A newly launched fund with a temporary waiver can look permanently cheap when the waiver has a hard end date sitting in the prospectus. And because the cost never appears on a statement, it is the one recurring expense most likely to go unexamined for years.
Where you will meet it on this site
Every fund and ETF row on the site carries the expense ratio taken directly from the fund's own disclosure, shown as one of the sortable columns.
Money-market and short-bond pages are where the ratio matters most mechanically, since it is often the largest determinant of the difference in net yield between two similar funds. Covered-call and closed-end-fund pages quote the headline distribution rate net of management fees but report leverage costs separately, and readers are pointed there to add the two back together.
Total-return discussions note that published fund returns are net of the expense ratio while index returns are not, so the two figures are never directly comparable without adjustment. Asset-location discussions note that the fee reduces return in a taxable or a sheltered account alike, and is not deductible in either.
What to remember
- An expense ratio is deducted from fund assets daily; it never appears as a billed line item, and every published yield or return figure is already net of it.
- The relevant number for an income fund is expense ratio divided by gross yield, not the ratio alone — the same fee consumes a far larger share of a modest yield than of a strong total return.
- Trading costs, leverage interest, acquired-fund fees, sales loads, and platform or wrap fees all sit outside the published ratio and can add materially to the true cost.
- Fee waivers shown in a prospectus are temporary and have a stated expiry date; the net ratio in force today may not hold next year.
- It is not tax-deductible for individuals, though it does reduce taxable distributions since it comes out of income before anything is paid out.
- The lowest expense ratio is not automatically the lowest total cost once spreads, turnover, and leverage financing are counted.
This page explains how the income type works, which does not change from week to week, so it deliberately carries no rate and no price. The links below go to the pages that hold the current figures for it, each one stamped with the date the data was pulled. Read the mechanism here first: the numbers there are far easier to judge once you know what they are measuring.
See the live numbers: Dividend Stocks, Bonds, Cash Rates.
Frequently asked
Am I billed for the expense ratio?
Is the yield I see already net of fees?
What costs are not in the expense ratio?
Why does a fee matter more for a bond fund than a stock fund?
Written for information only. Nothing here is investment, tax or legal advice, and no page on this site recommends buying or selling anything. Rules and tax treatment change; verify anything that matters with a professional who knows your situation. This explainer was drafted by a language model (claude-sonnet-5) from an editor-approved outline and fact sheet, under the rules set out in our editorial policy, and carries no market figures. Last updated Jul 29, 2026.