What is the difference between IBIT and FBTC?

BlackRock's IBIT and Fidelity's FBTC are Bitcoin ETFs with differences in fees, liquidity, and issuer reputation.

Jul 23, 2025 at 01:56 am

Understanding the Core Differences Between IBIT and FBTC

When comparing IBIT and FBTC, it's essential to understand that both are Bitcoin exchange-traded funds (ETFs) designed to offer investors exposure to Bitcoin without directly holding the cryptocurrency. However, there are notable distinctions between them in terms of issuer, structure, fees, and performance.

BlackRock’s IBIT (iShares Bitcoin Trust) is one of the newer entrants in the ETF space, launched by BlackRock, a global asset management giant. On the other hand, FBTC (Bitcoin Fund) has been around longer and was introduced by Fidelity Investments. These two funds differ primarily in their fee structures and market positioning.

One key difference lies in expense ratios. IBIT offers a relatively low annual expense ratio, which can be appealing to cost-conscious investors. In contrast, FBTC historically had a higher fee structure before recent reductions. Investors should carefully compare these costs as they directly impact long-term returns.

Another important aspect is the liquidity and trading volume. While both funds trade on major exchanges like Nasdaq, IBIT has seen significant inflows and growing daily trading volumes since its launch. FBTC, being an earlier product, has established a solid track record but may not always match IBIT’s momentum in terms of daily trading activity.

How IBIT and FBTC Track Bitcoin

Both IBIT and FBTC aim to reflect the price of Bitcoin by holding physical Bitcoin in trust. The trusts are structured so that each share represents a fractional ownership in the underlying Bitcoin held by the fund. This means that the net asset value (NAV) of each fund fluctuates in line with Bitcoin’s market price.

However, the way each fund manages custody and reporting varies slightly. IBIT benefits from BlackRock’s robust infrastructure and custodial partnerships, ensuring secure storage and transparent reporting. FBTC, backed by Fidelity Digital Assets, also provides institutional-grade security but may appeal more to those already familiar with Fidelity’s ecosystem.

It’s crucial to note that while both funds hold Bitcoin directly, they are not spot Bitcoin ETFs in the traditional sense. Instead, they are structured as grantor trusts, meaning they do not have the same regulatory classification as some other ETFs. This distinction affects how they are taxed and traded in secondary markets.

Fee Structures and Expense Ratios Compared

Expense ratios play a critical role in investment decisions, especially for long-term holders. Let’s break down the current fee structures:

• IBIT currently has an expense ratio of 0.12%, making it one of the most competitively priced Bitcoin ETFs available.
• FBTC reduced its expense ratio from 0.75% to 0.25% to remain competitive, particularly after the launch of IBIT and other lower-cost alternatives.

While both funds have made efforts to reduce costs, the gap remains in favor of IBIT. For investors planning to hold shares over extended periods, even small differences in fees can accumulate significantly over time. Therefore, understanding the implications of these fees is vital when choosing between IBIT and FBTC.

Liquidity and Market Performance

Liquidity is another crucial factor when evaluating ETFs. High liquidity ensures ease of entry and exit without substantial slippage. Since its launch, IBIT has attracted large inflows, contributing to its strong bid-ask spreads and tight trading ranges. Institutional adoption and retail interest have further bolstered its liquidity profile.

Conversely, FBTC has demonstrated consistent liquidity over time. Although it may not always match IBIT’s trading volumes, it remains a reliable option for investors seeking stable access to Bitcoin through an ETF structure. Traders should monitor real-time data on volume and spreads to make informed decisions based on current market conditions.

Additionally, premiums or discounts to NAV can occur due to supply and demand dynamics in the open market. Both IBIT and FBTC have experienced such deviations at times, though typically within manageable levels compared to other crypto-related instruments.

Tax Considerations and Investor Suitability

From a tax perspective, both IBIT and FBTC are treated differently than traditional ETFs. Because they are structured as grantor trusts, investors receive K-1 tax forms instead of the more common 1099. This can complicate tax filings and may not be ideal for all investors, especially those who prefer simplicity.

Moreover, U.S. investors should be aware that gains from these funds are generally taxed as collectibles under current IRS guidelines, which could result in higher tax rates compared to standard capital gains. Non-U.S. investors may face different tax treatments depending on local regulations.

Investors should evaluate whether the convenience of using an ETF outweighs the potential complexities associated with taxation and reporting. Those comfortable with K-1 forms and collectible tax treatment may find either fund suitable, while others might prefer alternative vehicles such as futures-based ETFs or direct crypto holdings.

Frequently Asked Questions

Can I convert my existing FBTC holdings into IBIT?

There is no direct conversion mechanism between FBTC and IBIT. However, you can sell your FBTC shares and purchase IBIT shares if desired. Be mindful of transaction costs and potential tax implications when executing such trades.

Are IBIT and FBTC available for retirement accounts?

Yes, both IBIT and FBTC can be held in certain retirement accounts such as IRAs, provided your brokerage platform supports them. Always consult with a financial advisor or custodian to confirm eligibility and understand any restrictions.

Do IBIT and FBTC pay dividends?

Neither IBIT nor FBTC pays dividends. Since these funds are structured as grantor trusts holding Bitcoin, there is no income generated from dividends or interest distributed to shareholders.

Which fund is better for short-term trading?

For short-term traders, liquidity and bid-ask spreads are crucial. Currently, IBIT tends to offer tighter spreads and higher average daily volume, making it potentially more suitable for active traders. However, FBTC remains a viable option with adequate liquidity for many trading strategies.