Three cents a year on every hundred dollars. That's the expense ratio on IVV and roughly a dozen other funds now sitting at the bottom of the fee leaderboard, with VUG close behind at 0.04%. BlackRock, Vanguard, and State Street built that price into a plumbing operation, rebalancing a fixed basket of stocks on autopilot, and the provider that wins the asset flood benefits just as much as the investor holding the fund. Active managers still charge ten to twenty times that rate for a promise that, by the industry's own SPIVA data, 85 to 90 percent of them fail to keep over ten and fifteen year periods. So why does the higher price stick around, and where does that fee gap actually go once it leaves an investor's account? That's what this post traces, along with what it costs a portfolio left running for thirty years.
Scale Made Index Fund Fees Nearly Free To Run
Expense Ratios: Index Funds vs Active Funds
| Fund / Category | Expense Ratio | Type |
|---|---|---|
| IVV | 0.03% | Index |
| VOO / SPTM | 0.03% | Index |
| VUG | 0.04% | Index |
| Active US Equity Fund (low end) | 0.60% | Active |
| Active US Equity Fund (high end) | 0.90% | Active |
Source: Source: Fund provider disclosures; industry averages cited in article
State Street, Vanguard, and BlackRock didn't cut fees to 0.03% out of generosity. Index fund management costs almost nothing to deliver at scale, and the fund that wins on price captures the assets. That's where the real money sits.
Look at the mechanics. VOO, IVV, and SPTM all track the S&P 500 or something close to it. The underlying holdings are nearly identical: the same few hundred large companies, weighted by market cap, rebalanced on a fixed schedule. Nobody's hunting for mispriced stocks here, no analyst flying to Omaha, no discretionary judgment call that needs a six figure salary behind it. The fund manager's job looks more like plumbing than investing. Keep the tracking error low, execute the rebalance, collect the assets under management.
That plumbing job scales beautifully. A $400 billion fund and a $4 billion fund cost roughly the same to administer per unit of assets, since the software doing the rebalancing doesn't care how many zeros are in the total. So when BlackRock or Vanguard or State Street cuts a fee from 0.09% to 0.03%, they aren't sacrificing profit. They're pricing a commodity product at its actual marginal cost, betting that the resulting inflow of assets more than makes up the difference. It usually does. Vanguard has reported several trillion dollars in global assets under management in recent years, and a fund charging three cents per hundred dollars on that scale still generates hundreds of millions in annual revenue.
Anyone comparing IVV, VOO, and SPLG should stop staring at the expense ratio line, since all three now sit at or near 0.03%, and start comparing tracking error over the trailing three years instead. That's where the remaining differences actually live, and it's the number worth checking before the next contribution goes in.
Index funds settled their fee competition at the cost floor. Active managers haven't, despite facing the same pressure to justify their price. Here's what their higher fee is supposed to buy, and whether it delivers.
Active Fund Fees Still Cover A Promise Most Managers Fail To Keep
Active Managers vs the Index: A Losing Track Record
of active large cap U.S. equity funds underperform the S&P 500 after fees over 10 to 15 year periods
manage to beat the benchmark, and rarely repeat the feat the following year
Source: Source: S&P Dow Jones Indices SPIVA Report
The average actively managed U.S. equity mutual fund still charges somewhere between 0.60% and 0.90% annually, and that fee exists to pay for a promise: that a skilled manager can beat the index net of costs. The data on whether that promise gets kept hasn't moved much in over a decade.
S&P Dow Jones Indices publishes a SPIVA report twice a year tracking what percentage of active managers beat their benchmark. The pattern holds with stubborn consistency. Over rolling ten year and fifteen year periods, a large majority of actively managed large cap U.S. equity funds, historically in the range of 85 to 90 percent, have underperformed the S&P 500 after fees. Not most years. Most decades. Managers who beat the index in any given year rarely repeat the feat the next one, which suggests a good deal of what looks like skill is closer to variance finding its way to the surface.
Here's the mechanism that makes the fee gap compound rather than just sit flat. A 0.75% fee versus a 0.03% fee is a 0.72 percentage point difference, and on a $100,000 portfolio held for 30 years growing at a hypothetical 7% gross annual return, that difference alone can erode the ending balance by a substantial sum. That figure comes from applying the arithmetic of compounding to a cost extracted every single year regardless of performance, not from a marketing brochure. The fee comes out whether the fund beats the market or loses to it by four points, and over three decades that steady extraction outweighs almost any single year of manager outperformance.
None of this means every active fund is a bad product or that every manager is bad at the job. Some categories, like certain fixed income niches or small cap value pockets, show less dramatic gaps between active and passive results. The burden of proof still sits with the higher fee product, though, and anyone holding an active fund charging above 0.60% should be able to point to a specific category or manager track record that justifies the gap, not just a general belief in stock picking.
Equity indexing reached the cost floor first partly because stocks are simple to track. Bonds were expected to resist that same compression. Here's why that expectation turned out wrong.
Bond ETF Fees Have Compressed To Match Equity ETF Fees
Where the 0.75% Active Fee Gap Comes From
Annual fee as percent of total 0.75 percentage point active fee
Index fund fee
Active fund fee
Source: Source: Author's calculation based on cited fee figures
Fixed income indexing was supposed to be harder to commoditize than equity indexing, and for a while it was. Bond markets trade over the counter rather than on a centralized exchange, and pricing thousands of individual bonds accurately requires more infrastructure than pricing 500 stocks. That gap has mostly closed.
Look at the current lineup. BSV, Vanguard's Short Term Bond ETF, sits at 0.03%. So does BLV, the Long Term counterpart. VCSH, VCIT, and VCLT, Vanguard's short, intermediate, and long term corporate bond funds, all sit at 0.03% too. SPTL, State Street's Long Term Treasury ETF, matches that figure. Even SCHP, Schwab's TIPS fund tracking inflation protected Treasuries, a category that used to carry a premium for its complexity, now charges the same three cents per hundred dollars.
What changed wasn't the underlying difficulty of managing a bond portfolio. Bonds still mature, get called, get replaced, and require more operational overhead than a static equity index. What changed is that the major issuers decided bond ETFs needed to compete on the same fee terms as their equity counterparts, because investors building a diversified portfolio increasingly shop for stock and bond exposure from the same provider, at the same price point, as a package deal. A fund family charging 0.03% for its S&P 500 fund and a higher rate for its bond fund risks losing the entire account to a competitor offering both at 0.03%. That competitive logic pushed fixed income fees down faster than the underlying cost structure alone would have predicted.
VMBS for mortgage backed exposure, VGLT for long Treasuries, and VCIT for investment grade corporates are all priced identically, so the fee argument for choosing between them has mostly evaporated at the broad market level. The decision now hinges on duration, credit exposure, and how a given fund fits the rest of the portfolio, and that's the comparison worth making before adding any of these three to a portfolio.
Stock funds and bond funds have converged on the same 0.03% price. That raises an obvious question: how do providers still profit at that price?
Fund Providers Still Profit Even At A 0.03% Expense Ratio
How Index Funds Reach the 0.03% Cost Floor
Source: Source: Article analysis of fund provider economics
A 0.03% expense ratio sounds like the fund company is barely making money, and on a per dollar basis, that's almost true. The profit at this end of the industry comes from volume and from adjacent revenue streams that rarely show up in the headline fee.
Securities lending is the clearest example. Index funds hold enormous static baskets of stock that sit in custody doing nothing most of the time, and fund providers lend those shares out to short sellers and other institutional borrowers for a fee, then split that revenue with the fund. Some of it flows back to shareholders, and some of it stays with the manager. iShares, Vanguard, and State Street all run substantial securities lending programs, and the revenue from that activity doesn't appear in the 0.03% figure at all. It's a separate income stream layered on top of the stated fee.
There's also the float. A fund that manages $500 billion at 0.03% is still collecting $150 million a year in fee revenue, and that revenue arrives with extremely low marginal cost once the fund is established and the assets are flowing in through automatic 401(k) contributions and dividend reinvestment. Scale is the entire business plan. A provider that captures a dominant share of the index fund market at a wafer thin margin can still run a highly profitable business, the same way a retailer profits on thin per unit margins when the volume is large enough and the supply chain is efficient enough.
Three cents per hundred dollars is a genuinely good deal for the investor holding the fund, regardless of how the provider makes money elsewhere, and none of this is a knock on the fee structure itself. Low cost doesn't mean the product exists outside a profit motive. It means the profit motive has moved to a part of the business the fee disclosure doesn't have to show. Checking whether a fund participates in securities lending, and how that revenue gets split, is a reasonable next question before assuming two 0.03% funds are identical.
The expense ratio doesn't tell the whole story of provider profit, and it doesn't tell the whole story of investor cost either. Here's what sits outside the fee entirely.
Expense Ratios Do Not Capture The Full Cost Of Holding An ETF
The expense ratio measures one cost among several, and treating it as the full picture of what an ETF costs to hold is a mistake that shows up most clearly in less liquid corners of the market.
Bid ask spread is the first hidden cost. A fund like IVV, trading hundreds of millions of shares daily, has a spread measured in fractions of a cent, so it barely registers. A smaller or more specialized ETF, even one charging a similarly low headline expense ratio, can have a spread wide enough that a single buy and sell round trip costs more than a year of the stated fee. This matters most for less popular funds tracking niche sectors or narrow bond categories, where daily volume might be a few thousand shares rather than tens of millions.
Tracking difference is the second hidden cost. An expense ratio of 0.03% is a stated cost, but the actual return an investor receives can lag the index by more or less than that figure, depending on how well the fund manages sampling, rebalancing timing, and cash drag. Most large funds from Vanguard, iShares, and State Street track their benchmarks tightly, often within a few basis points either direction, but tracking difference isn't guaranteed by a low expense ratio alone. You have to check the fund's actual historical return against its benchmark, not just its fee sheet.
Tax efficiency rounds out the list, and it varies more than most investors expect. ETFs generally distribute fewer taxable capital gains than mutual funds because of the in kind creation and redemption process that lets authorized participants swap shares for underlying securities without triggering a sale. The degree of that efficiency differs by fund structure and by how frequently the underlying index rebalances. A fund tracking a fast turnover index will generate more taxable events over time than one tracking a stable, low turnover index, even if both carry the identical 0.03% sticker price.
A three cent fee number is the beginning of a cost analysis, not the end of one. The fee war that pushed dozens of ETFs down to that level over the past decade has quietly shifted where the next round of scrutiny needs to happen: toward spread, tracking difference, and tax treatment. That's exactly where any comparison between two similarly priced funds should start.
The 0.03% number that opened this post is real, and it's a genuinely good deal, but it was never the full price of ownership, and it was never the reason active managers still charge ten to twenty times more. The index fee fell to its marginal cost because scale made that possible. The active fee stayed high because the product it sells, market beating skill, is what 85 to 90 percent of managers fail to deliver over ten and fifteen year stretches, and because spread, tracking difference, and tax treatment now matter more than the headline number ever did. That's where the fee gap goes: not into better returns, but into a cost investors keep paying for a promise the data says is rarely kept.
This article is for informational and educational purposes only and does not constitute financial, investment, legal, or insurance advice. The views expressed are analytical observations and should not be relied upon for personal financial decisions. Always consult a qualified financial advisor before making investment or insurance decisions.