BlackRock has sharply lowered the minimum for Bitcoin holders seeking to exchange BTC directly for shares of its iShares Bitcoin Trust (IBIT), reducing the threshold from $25 million to $1 million.
The change gives a broader group of large Bitcoin holders access to an in-kind conversion route without first selling their BTC for cash.
Robbie Mitchnick, BlackRock’s head of digital assets, disclosed the change during Bloomberg’s ETF IQ program on August 10. He also indicated that the firm intends to reduce the threshold further over time.
How the BlackRock Bitcoin ETF swap works
The mechanism operates through authorized participants, the financial institutions responsible for creating and redeeming ETF shares.
Instead of selling Bitcoin for dollars and subsequently purchasing IBIT, an eligible holder can transfer BTC and receive IBIT shares. The process can also work in the opposite direction, allowing ETF shares to be exchanged for Bitcoin.
The distinction is important because the transaction changes the form of exposure rather than requiring an open-market BTC sale.
Bloomberg ETF analyst Eric Balchunas highlighted the $25 million-to-$1 million reduction following Mitchnick’s appearance.
The lower threshold also reflects how the infrastructure surrounding U.S. spot Bitcoin ETFs has evolved since their launch.
Spot Bitcoin ETFs began trading in January 2024 under a cash-only creation and redemption structure. The SEC permitted in-kind exchanges for crypto ETFs in July 2025, creating the framework now being expanded by BlackRock.
Bitcoin ETF demand remains significant despite volatile flows
The timing of the change comes as institutional interest in U.S. spot Bitcoin ETFs remains substantial, although daily flows continue to fluctuate.
According to SoSoValue, U.S. spot Bitcoin ETFs attracted more than $850 million during the previous week, marking their strongest weekly inflow since April. Collectively, the funds held approximately $78 billion in Bitcoin.
The momentum has not been uniform. On August 10, the ETFs recorded approximately $145 million in net outflows.
That contrast matters because ETF adoption is increasingly being shaped by both strategic allocation and short-term positioning. A single negative flow session does not necessarily establish a broader trend.
The reduction in BlackRock’s in-kind minimum could nevertheless provide another channel through which existing Bitcoin holders interact with the ETF market.
The tax angle is potentially more important than the swap itself
The in-kind structure also has a tax dimension because IBIT operates as a grantor trust.
Under that structure, shareholders are generally treated as owning their proportional interest in the underlying Bitcoin for tax purposes. An outright Bitcoin sale can create a capital-gains realization, while an in-kind contribution to IBIT may potentially defer that realization.
Crypto tax specialist Clinton Donnelly, who operates the CryptoTaxFixer account, said the current tax position is that an in-kind Bitcoin contribution to IBIT is non-taxable, with the investor’s cost basis and holding period carrying over.
Donnelly also emphasized an important limitation: the treatment relies on IBIT’s grantor-trust structure, and the IRS has not formally ruled on the specific issue.
Balchunas similarly explained that the mechanism represents tax deferral rather than tax elimination. The original cost basis remains attached to the investment.
This distinction prevents the structure from being interpreted as a permanent tax escape. The potential benefit is primarily the ability to change exposure without immediately realizing the embedded gain.
Why self-custody concerns could matter
The development arrives amid renewed attention to the risks associated with holding Bitcoin directly.
TRM Labs recently analyzed an incident in which hackers drained roughly $116 million worth of Bitcoin from more than 5,200 Coldcard hardware wallets.
Such incidents can influence how investors think about custody. For some holders, moving from self-custodied Bitcoin into a regulated ETF structure may represent a different operational risk profile.
That does not necessarily mean ETF demand will replace self-custody. Rather, the growing number of available custody and investment structures gives large holders more ways to manage their Bitcoin exposure.
BlackRock is lowering the institutional barrier
The original $25 million minimum effectively limited the in-kind route to Bitcoin holders with very substantial positions.
A $1 million threshold remains high relative to the average investor, but it represents a 96% reduction in the minimum required for the transaction.
More importantly, Mitchnick’s comments suggest BlackRock views the current threshold as part of a broader process rather than a final endpoint.
If the minimum continues to decline, the practical distinction between holding Bitcoin directly and holding it through IBIT could become less significant for larger market participants.
That could also provide more flexibility for investors who already hold BTC but want to integrate their exposure into traditional portfolio infrastructure.
What the change could reveal about Bitcoin ETF adoption
The key question is no longer simply whether investors want exposure to Bitcoin through ETFs. Increasingly, the market is testing how existing Bitcoin owners can move between direct ownership and regulated investment vehicles.
The $1 million threshold could make future flow data more informative. If substantial amounts of cold-storage Bitcoin begin moving into IBIT through in-kind transactions, ETF assets could increase without requiring equivalent open-market Bitcoin purchases.
That distinction matters when interpreting ETF flows because asset creation through in-kind transfers does not have the same immediate market impact as buying Bitcoin with fresh cash.
Bitcoin was trading near $63,602 on Tuesday, down 1.2% over 24 hours, according to the supplied market data.
For now, the BlackRock change is primarily an infrastructure development rather than evidence of a guaranteed change in Bitcoin’s price trajectory.
The broader significance lies in the continued integration of Bitcoin into traditional financial structures. Lower in-kind barriers, evolving ETF mechanics and institutional custody options are gradually making it easier for large holders to move between native Bitcoin ownership and regulated market products.
Disclaimer: This article is for informational purposes only and does not constitute financial advice. Cryptocurrency investments are volatile and risky. Always conduct your research before making any investment decisions.
