What a 1,250% Risk Weight on Crypto Means for Banks

The rulebook most of us never open

Most people will never meet the Basel Committee on Banking Supervision. Even so, this group of central bankers and supervisors from many countries helps decide how safe banks have to be. It writes global minimum standards for capital—the money a bank keeps aside as a cushion against losses. The Committee cannot force any country to obey it, but its members have committed to turning its standards into national rules. What Basel decides can therefore influence how banks behave with your deposits, even if you never hear about it.

Cryptoassets are a new chapter in that story. The Committee published its first full standard on banks' cryptoasset exposures in December 2022, tightened it in July 2024, and set an implementation date of 1 January 2026. The approach, from the beginning, was cautious.

A sorting system for digital assets

Think of the framework as a sorting system. Group 1 is for cryptoassets that look enough like traditional investments to receive a familiar kind of capital treatment. It has two subcategories. Group 1a covers tokenized versions of traditional assets—digital representations of things like shares, bonds, or loans. Group 1b covers stablecoins, but only stablecoins that satisfy an unusually demanding checklist. Everything that fails to qualify goes into Group 2, where the rules become much stricter.

The framework is also deliberately wide in what it counts as an exposure. It can include coins a bank holds directly, lending to customers so they can buy crypto, derivatives tied to crypto, and crypto posted as collateral. The guiding idea is sometimes summed up as “same risk, same activity, same treatment”—with an extra layer of care whenever the technology itself creates new risks.

When a digital asset is treated like a traditional one

If a bank holds a tokenized version of an asset, the risk should ideally be measured by that underlying asset. A tokenized corporate bond, for example, should attract capital similar to the ordinary bond it represents. But there are conditions. The token must give the holder the same legal rights as the traditional asset, and ownership must be enforceable in the relevant jurisdictions. The system must also have settlement finality, meaning transactions remain valid even if one participant fails during the settlement process.

If the digital version is less liquid or more volatile than the traditional one, a bank cannot simply treat the two as identical. Regulators can also add an infrastructure surcharge on Group 1 assets. It is currently set at zero, but it can be raised if flaws emerge in the network, the technology, or the entities running it.

Stablecoins: a higher bar than most people imagine

Stablecoins sound simple: each token is supposed to be worth, say, one dollar. But how that promise is backed varies a great deal. Some stablecoins hold reserves of cash and high-quality securities. Others use algorithms or rely on other cryptoassets. Under Basel, only the first kind can qualify for preferential Group 1b treatment, and even those must clear many hurdles.

The issuer must be regulated and subject to capital and liquidity requirements. The reserve assets need to be safe, liquid, short-term, and bankruptcy-remote, meaning they are kept apart from the issuer so a company failure cannot drag the reserves down with it. The stablecoin must pass a redemption risk test, proving it can meet redemptions at its promised peg value even in stressful conditions. Reserve assets must be independently reviewed and publicly disclosed. Algorithmic stablecoins, and stablecoins whose value depends on other cryptoassets, are explicitly left out of Group 1b.

The 1,250% number in action

Group 2 is where the famous number lives. Within Group 2, a few assets can qualify as Group 2a if they meet hedging recognition criteria—essentially, a deep and reliable market exists through a derivative or exchange-traded product tied to that asset. Those assets are handled using formula-based market-risk rules. The rest are Group 2b, and they face a risk weight of 1,250 percent. Bitcoin is the asset most commonly cited in this category.

To understand why that matters, consider a $100 corporate loan with a 100 percent risk weight. It adds $100 to a bank's risk-weighted assets, and under the standard 8 percent minimum capital requirement the bank must hold about $8 of capital. Now take a $100 Group 2b cryptoasset. A 1,250 percent risk weight turns it into $1,250 of risk-weighted assets. Eight percent of that is $100—the full exposure.

This is not a fine or a tax. The capital stays on the bank's books as a loss cushion. But the effect is striking: a bank holding $100 million of a Group 2b cryptoasset would need at least $100 million in capital behind it. Once normal buffers and supervisory additions are included, the practical requirement can be even higher. The Basel Committee chose this design so a bank could absorb a complete write-off without hurting depositors or senior creditors. Critics argue it goes far beyond risk measurement and becomes, in practice, a prohibition on bank involvement in assets like Bitcoin. Either way, the economics are severe.

Exposure limits tighten the leash further

The rules do not stop at capital. A bank's total exposure to Group 2 cryptoassets is normally limited to 1 percent of its Tier 1 capital—the bank's core equity cushion—with a hard ceiling of 2 percent. If a bank crosses the 1 percent mark, it must inform its supervisor and return to the limit. Any excess beyond that point is treated under the 1,250 percent risk weight. If the bank exceeds 2 percent, the entire Group 2 portfolio becomes subject to that heaviest treatment. That kind of limit is rare in banking regulation, and it shows how cautiously supervisors view this asset class.

Why this reaches far beyond bank boardrooms

None of this tells an ordinary person whether to buy or sell any cryptoasset. These are rules for banks, not personal investment advice. But the rules shape what services banks are willing to offer. If a tokenized government bond carries more regulatory cost than an ordinary government bond, a bank may prefer the older form. If a stablecoin requires more capital than simply holding the same cash, the bank may avoid the token wrapper. And if Bitcoin-like assets effectively require dollar-for-dollar capital, bank customers looking for fully regulated crypto services may find fewer doors open.

Jurisdiction also matters. Basel standards are minimums, and local regulators may go further—even prohibiting certain activities. Banks must also begin disclosing more about their cryptoasset holdings and the capital set aside for them, using common templates designed to make the picture clearer for investors and the public.

The story is not finished. In November 2025, the Basel Committee agreed to expedite a review of parts of the cryptoasset standard, responding to rapid market developments. The 1,250 percent risk weight may not be the last word. For now, it is a powerful reminder that the people responsible for protecting the banking system prefer to be careful before they are sorry.