Basel cryptoasset capital treatment: what a stablecoin settlement balance costs a bank in capital

A bank that settles a cross-border payment in a stablecoin holds that stablecoin, however briefly. The holding is an exposure, and an exposure carries a capital cost. The Basel cryptoasset capital treatment is the rulebook that sets what the cost is. It is not the accounting question of whether the balance counts as cash, and it is not the custody question of who holds the key. It is the prudential question of how much loss absorbing capital has to sit behind the position.

The answer turns on a single classification, and the gap between the two outcomes is wide. This article sets out what the standard says, which stablecoins pass its tests, what failing them costs, who it actually binds, and how a treasury team should govern a settlement balance it holds for minutes rather than months.

What is the Basel cryptoasset capital treatment?

The Basel Committee on Banking Supervision published its standard on the prudential treatment of cryptoasset exposures in December 2022. It now sits in the consolidated Basel Framework as SCO60. The Committee first set an implementation date of 1 January 2025, then moved it to 1 January 2026, and in July 2024 it finalised a disclosure standard for cryptoasset exposures on the same date.

The standard sorts every cryptoasset exposure into one of two groups. Group 1 covers tokenised traditional assets and stablecoins that meet a set of classification conditions. Those exposures are capitalised broadly as the underlying asset would be, under the existing rules for credit, market and operational risk. Group 2 covers everything else, and it is capitalised conservatively.

Two further mechanics matter. Supervisors may apply an infrastructure risk add-on to Group 1 exposures where the ledger shows observed weaknesses, and the Committee set that add-on at zero to begin with. And classification is an ongoing duty rather than an onboarding one, because a token can fail a test it once passed.

Which stablecoins qualify for Group 1, and which do not?

Group 1b is the category a payment stablecoin aims for. To reach it, a token must represent a claim on an identifiable issuer or on a pool of reserve assets, and the arrangement must pass a redemption risk test. In substance that test asks whether the reserve assets are sufficient, liquid and segregated enough that holders can redeem at the peg value at all times, including under stress.

A basis risk test sits beside it. The rule requires the token to track its reference value closely, measured as observed deviations over a look back period. A token that drifts fails. There are further conditions on the issuer being regulated and supervised, and on redemption rights being legally enforceable.

Tokens that hold their value through an algorithm or a protocol rather than a reserve of assets cannot reach Group 1 at all. That exclusion is explicit, whatever the design.

One point is widely misread. A stablecoin issued under a national regime is not automatically Group 1b. The GENIUS Act in the United States sets reserve, redemption and supervision requirements for permitted payment stablecoin issuers, and a token that meets them is a far stronger candidate than one that does not. But the Basel tests are a separate set of criteria, applied by the supervisor of the bank that holds the token. The assessment is the holding bank's to run, and to keep.

Classification is not a label the issuer hands you. It is a test the holding bank runs, records, and runs again.

What does a Group 2 classification actually cost in capital?

Group 2 splits in two. Group 2a covers exposures that meet a hedging recognition test, and they attract modified market risk rules. Group 2b covers the rest, and the rule applies a 1,250 percent risk weight to the greater of the long and the short position.

That figure reads more plainly as capital. The minimum total capital requirement is 8 percent of risk weighted assets, so a 1,250 percent risk weight requires one dollar of capital for each dollar of exposure. A 100 percent risk weight, by the same rule, requires eight cents.

There is also a ceiling on how much Group 2 exposure a bank may run. The standard measures aggregate Group 2 exposures against Tier 1 capital, with a soft threshold at 1 percent and a hard limit at 2 percent. Breaching the soft threshold means the excess must be capitalised as Group 2b. Breaching the hard limit means the whole Group 2 position must be.

For a payment business the reading is simple. A Group 2 settlement balance is not merely expensive, it is capped. A corridor cannot be scaled on a token the bank's own supervisor puts in Group 2.

Does the Basel cryptoasset capital treatment apply to a credit union or an MSB?

Not directly, and this is where much confusion starts. Basel standards are agreements among the authorities that sit on the Committee. They are written for internationally active banks, and they carry no legal force in any country until the national authority writes them into its own rules. Timing has varied between jurisdictions, so the live question for any one institution is what its own supervisor has adopted.

Three consequences follow. A large internationally active bank should assume the treatment reaches it once its supervisor adopts the standard. A smaller domestic bank may sit outside that scope, or inside a simplified version of it. A credit union is capitalised under its own regulator, which in the United States is the National Credit Union Administration rather than the Basel Framework.

A licensed money service business has no risk weighted capital ratio at all. Its prudential constraints are a net worth test, a surety bond and a permissible investments rule that requires eligible assets covering outstanding transmission liabilities. Whether a stablecoin balance counts as a permissible investment is the equivalent question for an MSB, and state law answers it, not SCO60.

Being outside scope does not make the question go away. A bank counterparty inside scope will ask which group it would place a settlement token in, because the answer changes its own capital. That makes Basel classification a diligence question in a partnership conversation long before it is a reporting line.

How should a bank size and govern a settlement balance?

The exposure a bank reports is the balance it holds, measured the way its supervisor requires. For a settlement business that reframes the task. The aim is not to avoid stablecoins, but to hold as little, for as short a time, in as clean an instrument as the corridor allows.

• Classify before you hold. Run the Group 1b conditions on each token you would settle in, record the evidence behind each one, and name the person who owns the conclusion.
• Confirm scope in writing rather than assuming it. Ask your supervisor which capital framework applies to your institution, and from when.
• Measure the exposure the way it will be reported, including at any point in time measurement date, not as a monthly average that flatters a quarter end.
• Set a position limit in policy that sits below any regulatory ceiling, with a named approver for any breach.
• Shorten dwell time deliberately. Convert or redeem on a schedule, and treat an aged settlement balance as an exception that needs a reason.
• Reassess on events. A change in reserve composition, an attestation finding, a sustained deviation from the peg or a new supervisory statement each trigger a re-run of the test.
• Disclose on the basis you measure. A disclosure standard lands with the capital rule, so the reported figures and the internal ones have to reconcile.

The order matters, because a limit set before the classification is a number with no basis, and a classification with no named owner tends not to be refreshed.

How does settlement speed change the capital question?

Capital is carried against a position held. The longer a bank sits on a settlement balance, the larger the position it reports and the more capital it ties up. The correspondent model forced long holdings in a different form, as pre-funded nostro balances at a counterparty bank, which carry their own capital charge and their own counterparty risk.

A settlement leg that completes in minutes changes the shape of the exposure rather than removing it. The balance still exists and still has to be measured. But a corridor funded on demand holds a smaller working balance than one pre-funded weeks ahead, and a smaller balance is both cheaper in capital and further from any Group 2 ceiling.

Two caveats keep this honest. Speed does not fix classification, because a fast payment in a Group 2 token is still a Group 2 exposure. And a point in time measurement can catch a balance that an average would smooth, so the reporting basis has to be understood before any funding model is built on it.

Where StableNet fits

StableNet, built by SpendTheBits, settles cross-border B2B payments for banks, credit unions and licensed money service businesses in regulated stablecoins, completing in minutes with on-chain auditability. Short settlement cycles keep the working balance small, which is the one lever a treasury team holds under any capital framework. Every transfer produces ISO 20022 messages, a pacs.008 for the customer credit transfer and a pacs.009 for the interbank leg, inside a head.001 envelope and tracked end to end by UETR. KYB and KYC onboarding, KYT, sanctions and PEP screening, Travel Rule data and a tamper-evident audit trail sit in the same flow, so a prudential reviewer can read the position history and the payment record from one place.