Originally published at https://etf.thicket.sh/blog/how-is-an-etf-expense-ratio-charged.
An ETF expense ratio is never billed to you and never shows up as a line item. The fund deducts it from its own assets a little at a time — roughly 1/365th of the annual rate every day — before it calculates the net asset value that sets the share price. So the price you see has already had that day’s fee removed. It is charged on your entire balance, not on your gains, so a fund that loses money still collects it. You pay it continuously for exactly as long as you hold, and you stop paying it the day you sell.
This is the single most-searched confusion about fund costs, and the reason is structural: every other fee in a person’s financial life arrives as a charge they can point at. This one is invisible by design. Below is exactly where the money goes, why the ratio can differ between two apps showing the same fund, and what the number leaves out.
The Deduction Happens Inside NAV
An ETF calculates its net asset value once each trading day: total value of holdings, minus liabilities, divided by shares outstanding. The fund’s accrued expenses are part of those liabilities. Each day the fund books approximately one day’s worth of its annual expense ratio as an expense, and that accrual reduces NAV before the figure is published.
The consequence worth internalising: you never transact for the fee.No cash leaves your account, no share count changes. Your position is simply worth marginally less than an identical, costless portfolio would be. Over a day it is unmeasurable. Over thirty years it is the difference the whole low-cost index argument rests on — see our breakdown of fee drag by expense ratio for what that compounds to.
Daily, Not Annual — and Pro-Rata
The ratio is quoted annually and charged daily. A 0.03% fund takes about 0.0000822% of assets per day, not 0.03% on some anniversary. Two practical implications follow:
- Holding for a month costs about a twelfth of the annual rate.You do not owe a full year’s fee for a short holding period.
- There is no date to sell before. Unlike a mutual fund distribution or an annual account fee, there is no billing event to dodge. The cost is smooth. ## Charged on Balance, Not on Profit
The fee is a percentage of assets under management. It applies to your whole position regardless of performance:
Balance0.03% ratio0.20% ratio0.75% ratio$10,000$3/yr$20/yr$75/yr$50,000$15/yr$100/yr$375/yr$100,000$30/yr$200/yr$750/yr$500,000$150/yr$1,000/yr$3,750/yr
Approximate annual cost at a constant balance; in practice the fee accrues against the balance as it moves.
A down year does not pause it. That asymmetry — fees on the full balance, returns uncertain — is why cost is the one variable in investing you control outright.
Gross vs Net: the Waiver That Expires
The gross expense ratio is what running the fund actually costs. The net ratio is what you pay after any fee waiver or expense reimbursement the sponsor has agreed to. New or small funds frequently launch with a waiver to post a competitive headline number.
The trap is that waivers are contractual for a stated term and can lapse. When one expires, your cost steps up to the gross figure with no action on your part and no notification you are likely to notice. The expiry date is in the prospectus. If a fund’s gross and net numbers differ meaningfully, that gap is a scheduled future price increase.
What the Expense Ratio Does Not Include
- The fund’s own trading costs. Commissions and spreads the fund pays when it rebalances come out of fund assets but sit outside the ratio. High-turnover strategies carry more of this hidden cost than their ratio suggests.
- Your bid-ask spread. On a mega-cap index ETF, a penny. On a thin or exotic fund, a single round trip can cost more than a year of expense ratio.
- Premium or discount to NAV. An ETF trades at a market price that can drift from the value of its holdings, most visibly in volatile markets or in funds holding assets that trade in other time zones.
- Brokerage and platform fees, where your broker charges them. For a broad, liquid fund held long term, the expense ratio really is the dominant cost. For a narrow one traded often, it can be the smallest of the four.
What Counts as a Good Ratio
Fund typeTypical rangeReadBroad index (total market, S&P 500)0.02% – 0.09%Competitive; the floor is near zeroSector / factor0.10% – 0.50%Reasonable if the exposure is genuinely distinctActive / thematic / covered-call income0.35% – 0.95%Needs a specific thesis to justifyAnything above 1.00%> 1.00%Mutual-fund-era pricing; look for a cheaper equivalent
The comparison matters more than the absolute number. Two funds tracking nearly the same index at very different prices is the clearest case — see QQQ vs QQQM, where the cheaper share class holds the same portfolio, and VOO vs SPY vs IVV, three funds on the same index at different costs. For the broader structural comparison, see ETF vs index fund and ETF vs mutual funds.
Sources
Fee definitions, the requirement that costs be disclosed in the prospectus, and the long-run effect of expenses on returns: U.S. Securities and Exchange Commission, Mutual Funds and ETFs and Investor.gov on fund fees and expenses. Net asset value and how funds calculate it: Investor.gov, Net Asset Value. Daily-accrual figures use the annual ratio divided by 365. Typical ranges reflect fees observed across large US-listed ETFs and change over time.
Caveats
This describes US-regulated ETFs and is general information, not investment advice. A specific fund’s current gross and net expense ratios, any waiver and its expiry, and its turnover are stated in that fund’s prospectus on the issuer’s own site — which is the authoritative source when a data provider or app disagrees.
Frequently Asked Questions
How is an ETF expense ratio actually charged?It is never billed to you and never appears as a line item. The fund accrues its expenses daily out of its own assets: each day roughly 1/365th of the annual expense ratio is deducted before the fund strikes its net asset value (NAV). So the price you see already has that day's fee taken out. You pay it by owning the fund and watching a slightly lower NAV than you would have had otherwise. This is why investors search their brokerage statements for the charge and never find it — there is nothing to find, because the deduction happens inside the fund before the number ever reaches you.Is an expense ratio charged daily, monthly, or annually?The ratio is quoted as an annual percentage, but it is accrued daily. A fund with a 0.03% expense ratio does not take 0.03% once a year; it takes about 0.0000822% of assets each day, every day the market is open, as part of calculating that day's NAV. The practical effect is that the fee is charged continuously and pro-rata for exactly as long as you hold. If you own a fund for one month, you pay roughly one twelfth of the annual rate — you do not owe a full year's fee, and you do not escape it by selling before a year-end date.Is the expense ratio charged on your profit or on your total balance?On your total balance, not your profit. The fee is a percentage of assets under management, so it applies to the entire value of your position whether the fund is up, down, or flat. A 0.20% expense ratio on a $50,000 holding costs about $100 a year regardless of performance. This is the detail that surprises people most: a losing fund still charges its fee, and it charges it on the full remaining balance. Performance-based fees that only apply to gains exist in some hedge-fund structures, but not in a standard ETF expense ratio.What is a good expense ratio for an ETF?For a broad, plain-vanilla index ETF, anything at or under about 0.10% is competitive, and the largest total-market and S&P 500 funds now sit between 0.02% and 0.09%. Sector and factor funds typically run 0.10% to 0.50%. Actively managed, thematic, and covered-call income funds are commonly 0.35% to 0.95%. Above roughly 1.00% you are paying mutual-fund-era pricing and should have a specific reason. The useful test is not the absolute number but the comparison: if a nearly identical index is available at a fraction of the cost, the difference is pure drag with nothing bought for it.What is the difference between gross and net expense ratio?The gross expense ratio is what the fund's operating costs actually amount to. The net expense ratio is what shareholders actually pay after any fee waiver or expense reimbursement the sponsor has agreed to. Newer or smaller funds often launch with a waiver to look competitive, so the net figure is lower than the gross. What matters is that waivers are usually contractual for a stated period and can expire — at which point your cost rises to the gross figure without you doing anything. Check the expiry date in the prospectus, not just the headline number.Does the expense ratio include trading costs and commissions?No, and this is a real gap. The expense ratio covers the fund's management fee and operating costs — administration, custody, legal, accounting. It excludes the brokerage commissions and bid-ask spreads the fund incurs when it trades its holdings, which are paid out of fund assets but reported separately. It also excludes what it costs you to trade: the bid-ask spread on the ETF itself, and any premium or discount to NAV. For a heavily traded fund those are trivial; for a thin, exotic one the spread can exceed a year of expense ratio on a single round trip.Why does the same ETF show a different expense ratio on different apps?Usually because one source is showing the gross ratio and another the net (post-waiver) ratio, or because one has not refreshed after a fee change — issuers cut fees fairly often and third-party data lags. Some apps also blend in other costs or display a total cost of ownership figure. The authoritative number is the one in the fund's own prospectus and summary prospectus on the issuer's website, which is the document the SEC requires. When two sources disagree, the prospectus wins.expense ratioETF feesNAVdaily accrualgross vs netfee waiverfee dragSEC← More fund analysis
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