BTC breaks the bottom line: The ETF ledger behind BlackRock's (BLK.US) $4.1 billion tax benefit

According to Woofun AI, documents submitted by BlackRock (BLK.US) on October 5 revealed that as Bitcoin's fair value broke through the cost benchmark, the agency estimated $4.1 billion in income tax benefits. This figure does not come from direct transaction profits, but rather from tax adjustments at the accounting level, which marks a fundamental reversal in the tax liability structure of large holders on their balance sheets after asset prices rebounded.

At the level of financial details, the core of this document is BlackRock's treatment of deferred tax assets. As of September 30, since Bitcoin's fair value is already higher than its historical cost, BlackRock has eliminated deferred tax assets associated with Bitcoin and written off corresponding valuation reserves.

Notably, these financial data compiled by management were neither audited nor reviewed by KPMG, and were adjustments of an estimated nature. The above estimated earnings are directly linked to the company's tax accounts and adjustments to its valuation reserves in September. Judging from the position data, as of 4 p.m. EST on October 4, BlackRock disclosed that the Bitcoin holdings were 848,000, and the average purchase price was $75,440.70. This price already includes various fees.

This subsequent acquisition data is counted separately from the accounting comparison data on September 30 to reflect the latest position status. In contrast, BlackRock listed approximately 806,038 Bitcoin holdings in its position report submitted on October 5, while the fund's net asset value on the same day was close to $69 billion, and the benchmark price of Bitcoin was $85,694.41. Going back to the quarterly report submitted on June 30, the number of Bitcoin holdings at the time was 734,261, the investment cost was about 61 billion US dollars, and the fair value was about 43.4 billion US dollars. Through this historical data comparison, it can be found that at the same statistical node, the cost of these positions is lower than their fair value, which provides a data basis for current tax revenue.

Data compiled by Woofun AI shows that from June to October, the expansion of position size and the increase in fair value together contributed to this accounting adjustment.

Going deep into the microstructure of IBIT funds, cost estimation and transaction mechanisms present a more complex picture. Maketo estimates that as of October 2, the average cost of the remaining bitcoins in BlackRock's iShares Bitcoin Trust IBIT was $81,188 per coin. The company's model recalculates the cost of Bitcoin by analyzing daily cash flow conditions and price data, which is different from the average cost of BlackRock's overall holdings. IBIT shareholders buy fund shares at market prices, so even if their shares correspond to the same batch of bitcoins, investors who buy at different times may have differences in their break-even points.

The fund's estimated acquisition costs reflect a different investment situation from each investor. IBIT uses the average cost method when calculating realized gains and losses from Bitcoin disposal, while the June report showed significant transaction activity in both directions. In the six months up to June 30, the trust fund purchased 157,501 bitcoins and also disposed of 192,970 bitcoins to redeem shares, including physical transfers. To determine whether there is a case of redemption at a price below cost, it is necessary to have daily capital flow data, price information, and cost estimates corresponding to these dates.

Currently, the only data available for the first half of the year is still uncertain whether the transaction occurred just when the cost benchmark was breached, nor is it possible to understand the specific motivations of investors. Investors can sell ETF shares on the secondary market, while redemption through IBIT is a different type of transaction: only authorized participants can directly create or redeem shares with the trust fund. IBIT's recruitment brochure distinguishes cash redemptions from bitcoin redemptions: in cash redemptions, the trust converts the corresponding bitcoins into cash, while physical redemptions directly deliver bitcoins. Stock transactions, cash redemptions, and Bitcoin transfers are different operating processes. Judging from the fund's acquisition cost data alone, it is impossible to know these operating procedures and what decisions the subsequent recipients will make.

Market contrasts and future prospects reveal the complexity of capital flows. On October 5, a Bitcoin spot ETF in the US market had a net outflow of $89.8 million, while Farside Investors data showed that BlackRock's fund had an inflow of capital within the same trading day.

This contrast reflects differences in the flow of funds among different funds on the same day, and suggests differences in investors' preferences or strategies for specific ETF managers. To determine whether changes in the cost baseline will affect these decisions, it is necessary to compare the flow of funds before and after the cost change occurred over a longer period of time. Changes in the cost baseline will change the profit and loss status of the relevant investment positions, and documents submitted by BlackRock also show that this change will have a significant tax accounting impact. Actual trends to watch out for next include the creation of new fund shares, redemption operations, and the disposition of redeemed bitcoins. Even if the price of Bitcoin remains stable, it is impossible to determine the identity of the next buyer and its motives for trading, and the microstructure of the market is still evolving dynamically.