Federal Reserve to Propose Basel III Rules Assigning 1,250 Percent Risk Weight to Bitcoin at Major US Banks

This rule will effectively lock Bitcoin out of major U.S. banks’ balance sheets, signaling a global split in how traditional finance and crypto interact.

• Fed signals Basel III crypto clampdown: On March 12, 2026, the Federal Reserve announced plans to propose rules codifying a 1,250% risk weight for Bitcoin at major banks.
• Economic barrier set: This risk weight means banks must hold capital equal to the full value of any Bitcoin exposure, making such activities economically prohibitive.
• Advocacy and comment period: The proposal will go to a board vote and then a 90-day public comment period, with groups like the Bitcoin Policy Institute preparing to challenge the rule.

• Basel III’s global reach: The Basel Committee’s 2022 framework classifies Bitcoin as a “Group 2b” asset, subject to the highest risk weight due to volatility and lack of backing.
• U.S. banks already cautious: Even before this, most major U.S. banks avoided direct Bitcoin exposure, citing regulatory uncertainty and capital costs.
• Dubai’s divergence: Dubai and the UAE are implementing Basel III but have built a crypto-friendly regulatory regime, making them less affected by U.S. moves.

The Federal Reserve’s upcoming proposal will hard-code the Basel Committee’s 1,250% risk weight for Bitcoin into U.S. banking regulation. Here’s why that number matters: under Basel III, banks must hold capital reserves against risky assets to absorb potential losses. For most loans or securities, risk weights range from 0% (government bonds) to 100% (corporate loans). But for Bitcoin and similar unbacked cryptoassets, the Basel Committee set the risk weight at 1,250%—the highest possible.

Practically, this means that for every $1 of Bitcoin exposure, a bank must set aside $1 in capital. Since banks are required to maintain an 8% capital ratio, the 1,250% risk weight ensures that the full value of any Bitcoin holding is matched by capital, making it financially irrational for banks to hold or lend against Bitcoin. This is not a ban, but a capital wall: it makes Bitcoin so expensive to touch that banks will stay away.

The rationale is clear. Regulators see Bitcoin as highly volatile, thinly traded in crisis, and lacking intrinsic value or backing. The 1,250% risk weight is designed to prevent systemic risk from crypto contagion—banks can’t take on exposures that could destabilize the financial system. This is the final phase of a multi-year process: Basel III was finalized globally in 2022, and U.S. agencies have been calibrating their implementation since 2023, with industry pushback leading to some relief on other asset classes but not on crypto.

For U.S. banks, this proposal means the crypto window is closing. Any hope of offering Bitcoin custody, trading, or lending at scale is off the table. For crypto firms, access to mainstream banking will remain limited, reinforcing the divide between traditional finance and the crypto ecosystem.

Globally, the picture is more nuanced. While the UAE and Dubai enforce Basel III for banks, they have carved out regulatory space for crypto through VARA and new federal laws, allowing licensed crypto businesses to operate with less friction. This highlights a jurisdictional split: U.S. banks will be locked out, but other financial centers may continue to experiment.

The public comment period is the last chance for advocacy groups like the Bitcoin Policy Institute to argue for a more nuanced, market-risk-based approach. But unless the proposal is revised, the U.S. will cement the strictest possible stance on Bitcoin in the banking sector—pushing innovation, custody, and liquidity offshore.

• Major U.S. banks: Will be structurally barred from meaningful Bitcoin exposure or services, limiting product offerings and client engagement in crypto.
• Crypto firms and exchanges: Face continued barriers to U.S. banking access, increasing operational costs and reliance on non-bank partners.
• Institutional investors: U.S.-based funds and asset managers will see fewer on-ramps for regulated Bitcoin products.
• Dubai and UAE-based crypto businesses: Experience little direct impact, as local regulation remains crypto-friendly and independent of U.S. capital rules.

• Fed’s board vote and comment volume: High engagement or pushback during the 90-day comment period could signal pressure for revision or compromise.
• Bank product announcements: Watch for U.S. banks scaling back or exiting crypto-related services, confirming the rule’s chilling effect.
• Dubai/UAE crypto growth: Continued expansion or new launches in Dubai’s regulated crypto sector will highlight the global divergence in regulatory approaches.