Forget GBTC. BlackRock Charges $1,250 Less a Year to Hold the Same Bitcoin on $100,000
Two Bitcoin ETFs hold the exact same asset through nearly identical structures, yet one quietly drains your account at six times the rate of the other. Before you assume switching is the obvious move, your tax situation may tell a…
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If you own Grayscale Bitcoin Trust (NYSEARCA:GBTC), you probably bought it for a sensible reason. GBTC was the first easy way to hold Bitcoin (CRYPTO:BTC) in an ordinary brokerage account, and it became a spot Bitcoin ETF when it converted from a closed-end trust in January 2024. The catch is the price of holding it. GBTC charges a 1.5% sponsor fee, which comes to $1,500 a year on a $100,000 position. BlackRock’s iShares Bitcoin Trust ETF (NASDAQ:IBIT) charges 0.25%, or $250 on the same amount. That leaves a gap of $1,250 a year, as of October 19, 2026.
Same Bitcoin, Different Price Tag
Both funds hold Bitcoin through a custodian. Grayscale says GBTC aims to reflect “the value of Bitcoin held by the Trust, less expenses.”. BlackRock’s filings say IBIT’s assets consist mainly of “Bitcoin held by a custodian on behalf of the Trust”. Each one is a grantor trust built to track spot Bitcoin, which means the only thing separating them for an investor holding for the long term is what each sponsor takes out.
That cost is easy to miss because nobody sends you a bill. The sponsor fee builds up daily and gets paid from the trust’s own assets, so every share slowly comes to represent a little less Bitcoin. The fee shows up as returns that trail the underlying asset, with no $1,500 line item on your statement. A holder who never checks the fee schedule may go years without noticing that they pay 1.5% when 0.25% buys the same exposure.
Both Funds Lost Roughly a Quarter Over the Past Year
Bitcoin itself dropped 24.49% over the past year, and both funds dropped with it. Prices come from delayed quotes in the Monday afternoon session on October 19, 2026. GBTC traded at $63.14 and IBIT at $46.27.
| Period | GBTC | IBIT |
|---|---|---|
| One year | -25.54% | -24.68% |
| Year to date | -7.64% | -6.81% |
| One month | 7.47% | 7.5% |
Where Investor Money Has Gone
GBTC has $10,262,971,355.28 in net assets and cumulative net flows of -$27,943,497,955. A negative flow figure means more money has left the fund than has come in. IBIT reports $65,268,520,240 in net assets and cumulative net flows of $65,567,976,023.66. If you stay in GBTC, you sit in the fund investors have been leaving, while IBIT has pulled in the larger inflows of the two.
Why Your Cost Basis Can Override the Fee Math
In a taxable account, selling GBTC to buy IBIT counts as a sale, and any gain is taxable. Investors who bought GBTC before the conversion, especially at a discount, may be holding very large embedded gains. For them, the tax bill from switching could be bigger than many years of fee savings, depending on cost basis and holding period.
The math shifts in three situations:
- IRAs and 401(k)s: Inside a retirement account, the sale causes no current tax, so you can sell GBTC and buy IBIT the same day and start paying the lower fee right away.
- New money: Directing fresh contributions to IBIT while leaving existing GBTC shares in place avoids any sale and limits how much is paid at the higher fee.
- Recent buyers: Since both funds fell over the past year, some taxable GBTC lots may show small gains or losses. Looking at each lot in a brokerage’s cost-basis view shows which lots carry only a small tax hit.
Before you sell anything with a large gain that is subject to taxes, go over the specific lots with a tax professional.
What This Comparison Cannot Show
IBIT’s price history starts on January 11, 2024, so the funds can be compared only over periods inside that window. Earlier Bitcoin cycles fall outside the shared record. That said, both funds hold the same asset, and GBTC charges several times more for it.
How Account Type Changes the Swap Math
For those holding GBTC in a retirement account, or adding new money to Bitcoin, IBIT offers the same exposure for $1,250 less a year on every $100,000, which makes the fee gap the deciding factor. When GBTC sits in a taxable account with large pre-conversion gains, keeping those shares and sending new dollars to IBIT may serve you better. Your cost basis determines which group you’re in.
Contact [email protected] for any questions or corrections.
Ryne Mauck is an investment writer covering exchange-traded funds, retirement planning, and portfolio strategy. Through his work at 24/7 Wall St. and other investment platforms, including Seeking Alpha, he aims to provide clear, research-driven insights that help investors make more informed decisions while maintaining a long-term approach to investing.
Ryne holds a B.Sc. in Finance and an M.A. in Political Science. He is a formerly registered Municipal Advisor Representative and has passed the Series 50, Series 63, and Series 65 exams. His articles are not intended to be, nor should they be interpreted as, financial advice.
