The Short Version
- Spot bitcoin ETFs hold real bitcoin with a regulated custodian. IBIT's sits with Coinbase Prime Custody Trust Company, supervised by New York State banking regulators.
- One share is a fraction of a coin. Around 1,760 IBIT shares represented one bitcoin as of July 2026, and that ratio shrinks over time as the fund pays its fee in bitcoin.
- Fees run 0.20% to 0.25% among the major spot funds. BITB at 0.20% is the cheapest of the large ones; IBIT and FBTC both charge 0.25%.
- Gains are taxed as ordinary capital gains, not at the 28% collectibles rate that catches physical gold funds. That misconception is the most common error in this category.
- You can owe tax without selling. The trust sells bitcoin to cover its expenses, and under grantor trust rules those sales land on your 1099 pro rata.
Spot Bitcoin ETFs Solved Custody, Not Volatility
Before January 2024, owning bitcoin in the United States meant opening an account at a crypto exchange, or managing a wallet and a private key you could permanently lose. Neither option worked inside a 401(k) or an IRA, and neither produced a tax form your accountant recognized.
A spot bitcoin ETF holds actual bitcoin with a qualified custodian and issues shares against it. You buy the shares in a normal brokerage account, next to your index funds. There is no wallet, no seed phrase, and no exchange login. IBIT keeps its bitcoin with Coinbase Prime Custody Trust Company, which is regulated by the New York State Department of Financial Services.
What the structure does not do is dampen anything. The share price tracks bitcoin, so a 40% bitcoin drawdown is a 40% drawdown in the fund. The convenience is real and the risk is unchanged. Past performance does not guarantee future results.
BITO, which launched in 2021, holds CME bitcoin futures contracts rather than bitcoin, and charges 0.95%. Futures-based funds have to roll contracts forward, which introduces tracking differences the spot funds do not have. If a fund launched before 2024, check which of the two it is.
One Share Is Not One Bitcoin, and the Gap Widens
This trips up nearly everyone comparing an ETF's chart against bitcoin's price. Each IBIT share represented roughly 0.000566 bitcoin as of July 2026, so about 1,760 shares added up to one coin. The funds were deliberately priced at accessible per-share levels rather than at the price of a whole bitcoin.
The more useful detail is that the ratio moves in one direction. The trust has no cash and no income, so it pays its management fee the only way it can: by selling small amounts of bitcoin. Every fee payment leaves slightly less bitcoin backing each share.
At 0.25% a year, a share backed by 0.000566 bitcoin today is backed by roughly 0.000565 next month, and the erosion compounds quietly for as long as you hold. This is the honest answer to why an ETF's long-run return trails bitcoin's own price return. The fee is not deducted from your account. It is deducted from your bitcoin.
Every issuer publishes the bitcoin-per-share figure daily on the fund page. Because it declines continuously, a ratio quoted in an article from six months ago is already wrong. Use the issuer's number on the day you need it.
Fee Is the Only Durable Difference Between the Big Funds
The spot funds hold the same asset with similar custodians under the same rules. They are far more alike than the marketing suggests, which leaves cost and liquidity as the differences that persist.
| Fund | Issuer | Fee | Approx. assets | What sets it apart |
|---|---|---|---|---|
| IBIT | BlackRock | 0.25% | $45B | Much the largest, so the tightest spreads and the deepest options market |
| FBTC | Fidelity | 0.25% | $12B | Fidelity self-custodies the bitcoin rather than using a third party |
| BITB | Bitwise | 0.20% | $2.1B | Cheapest of the large funds, and publishes its wallet addresses publicly |
| BITO | ProShares | 0.95% | $2B | Futures-based, not spot. Different product despite the similar chart |
On a $10,000 position the gap between 0.20% and 0.25% is five dollars a year. That is small enough that liquidity matters more for anyone trading size or using options, and cost matters more for anyone buying and holding for a decade. Full side-by-side breakdowns live at IBIT vs FBTC and IBIT vs FBTC vs BITB.
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Holding the ETF Instead of the Coins Changes Five Things
This is the comparison people search for most and the one fund pages never make, because no issuer wants to describe the case for not using their product.
| Spot bitcoin ETF | Bitcoin held directly | |
|---|---|---|
| Ongoing cost | 0.20% to 0.25% a year, paid in bitcoin | No management fee, but exchange and network fees on transactions |
| Custody | A regulated custodian holds it, and you cannot lose a key | Yours to secure, and yours to lose |
| Trading hours | Market hours only, so weekend moves gap at Monday's open | 24 hours a day, every day |
| Account access | Works in an IRA, a 401(k) window, or a taxable brokerage | Taxable accounts and specialty crypto IRAs |
| Tax paperwork | A 1099 from your broker | Your own records for every transaction |
The weekend gap deserves more attention than it gets. Bitcoin trades continuously; the fund does not. A sharp Saturday move shows up all at once when the market reopens, and a stop order placed on Friday can execute far from where it was set.
The fee buys account access and removes custody risk. For anyone holding bitcoin inside a retirement account, there is no direct alternative at all, so the comparison is moot. For a long-term taxable holding, 0.25% a year compounds against you and self-custody costs nothing annually. The right answer follows from which account the money is in, not from which product is better.
You Can Owe Tax on a Fund You Never Sold
Two tax facts define this category, and both are commonly reported wrong.
First, the rate. Spot bitcoin ETFs are grantor trusts, so you are treated as owning bitcoin directly rather than owning shares in a fund. Bitcoin is property, and gains are ordinary capital gains at the usual short-term and long-term rates. They are not taxed at the 28% collectibles rate that applies to physically backed precious metals funds. That misconception circulates constantly, probably because the fund structure resembles GLD, which genuinely does carry collectibles treatment.
Second, the surprise. Because the trust sells bitcoin to pay its expenses, and because grantor trust treatment makes those sales yours proportionally, each fee payment is reported on your 1099 as a small bitcoin disposition. You can buy shares in January, sell nothing all year, and still receive a tax form showing dozens of tiny dispositions with small gains or losses.
The dollar amounts are usually minor. The paperwork is not what people expect from a buy-and-hold position, and it is the single most common source of confusion when the first tax year closes. Our guide to how ETFs are taxed covers where this sits relative to ordinary funds, and none of this is tax advice.
Ethereum Funds Run the Same Structure
Spot ethereum ETFs followed the bitcoin funds and use the same grantor trust design, the same custody model, and similar pricing. ETHA, BlackRock's ethereum fund, charges 0.25%, matching IBIT.
One difference is worth knowing. Ethereum can earn staking rewards, and whether a US spot ethereum fund passes those rewards to shareholders depends on the fund's structure and its regulatory permissions. A fund that does not stake gives up that yield, which is a real economic difference from holding ether directly. Confirm what any specific fund does rather than assuming, since this has changed since the products launched. The IBIT vs ETHA comparison covers the pair directly.
Questions People Ask Before Buying a Bitcoin ETF
Roughly 1,760 shares as of July 2026, when each IBIT share represented about 0.000566 bitcoin. The ratio is published daily by the issuer and drifts downward over time, because the fund pays its 0.25% annual fee by selling bitcoin from the trust. That means the bitcoin behind each share slowly shrinks even when the bitcoin price is flat. Check the issuer's current figure rather than relying on a number from a few months ago.
Yes. A spot bitcoin ETF holds real bitcoin with a qualified custodian rather than tracking the price through futures contracts. IBIT's bitcoin sits with Coinbase Prime Custody Trust Company, a custodian regulated by the New York State Department of Financial Services. This is the difference between the spot funds launched in 2024 and older futures-based products like BITO, which holds CME futures contracts at 0.95% and tracks bitcoin less precisely.
No. FDIC insurance covers bank deposits, not investment products, and no ETF of any kind is FDIC insured. SIPC coverage is also frequently misunderstood here: it protects you if your broker fails, not against the bitcoin price falling and not against a custodian failure. The bitcoin itself is held by a qualified custodian under state banking regulation, which is a real protection, but it is not deposit insurance.
Spot bitcoin ETFs are structured as grantor trusts, so you are treated as owning a pro-rata share of the bitcoin rather than shares in a fund. Gains are ordinary capital gains at the usual short-term and long-term rates, not the 28% collectibles rate that applies to physical gold ETFs, which is the most common misconception in the category. IBIT does not issue a Schedule K-1. This is general information, not tax advice; confirm your situation with a tax professional.
Because the trust sells bitcoin to pay its own expenses, and under grantor trust treatment those sales are yours pro rata. Each small fee sale is reported on your 1099 as a bitcoin disposition with a tiny gain or loss, even in a year you bought nothing and sold nothing. The amounts are usually small, but they are real taxable events and they surprise holders who expected a buy-and-hold position to generate no tax reporting until sale.
They are different products with different trade-offs. The ETF gives you brokerage and retirement-account access, no wallet or private keys to manage, and standard 1099 reporting, in exchange for an annual fee and trading only during market hours. Holding bitcoin directly means no management fee, 24/7 trading, and the ability to move the asset yourself, in exchange for full custody responsibility and your own tax record-keeping. Neither is a better answer in general; the fee buys convenience and account access.
Side-by-side breakdowns with live data and our BFF Take.