Basel Committee approves machine-readable Pillar 3 disclosure standard

The Basel Committee on Banking Supervision approved a final standard requiring banks to publish machine-readable Pillar 3 risk disclosures and signed off on revisions meant to curb year-end “window-dressing” by globally systemic banks, according to a release from the Bank for International Settlements. The committee, meeting in Indonesia on 28-29 September 2026, also flagged the growing use of leverage inside the AI financing ecosystem and promised an update on its review of bank cryptoasset exposure rules by year end.

• Final machine-readable Pillar 3 disclosure standard approved, to publish “around the end of the year”
• G-SIB window-dressing revisions and a cross-border exposure consultation both due “later this month”
• Pillar 2 consultation on interest rate risk in the banking book set for publication next month

• 19 jurisdictions surveyed on AML/CFT risk-assessment data and methods
• 6 jurisdictions assessed for leverage-ratio implementation under RCAP
• 2016 year the current IRRBB standard was published, now getting fresh Pillar 2 guidance
• 2008 year liquidity risk principles were set, now under review

The Basel Committee met in Indonesia on 28-29 September 2026 to work through a slate of supervisory and regulatory items, according to the release published by the BIS. Chair Erik Thedéen, governor of Sveriges Riksbank, said the session “allowed our members to discuss risks and vulnerabilities to the global banking system and to advance our supervisory and regulatory initiatives.” The committee reports to the Group of Central Bank Governors and Heads of Supervision, chaired by Bank of Canada governor Tiff Macklem, and its standards carry no legal force on their own.

AI’s financial footprint draws fresh scrutiny

The committee said developments in artificial intelligence have “continued to evolve at a remarkable speed” since its prior meeting on 19-20 May 2026. The release states directly that “the financial footprint of the AI ecosystem is also expanding rapidly, accompanied by greater use of leverage and increasingly interconnected financing arrangements.”

The committee agreed to review the “event type” loss categories in its operational risk framework, with a specific focus on cyber risk and AI, and said it will keep monitoring supervisory implications. No timeline was given for that review, and the release does not quantify the leverage or interconnectedness it describes.

Pillar 3 goes machine-readable, G-SIB rules tighten

The final standard, which follows the committee’s consultation on machine-readable Pillar 3 disclosures, is meant to replace a system in which “most banks… currently publish their disclosures in PDF format only, which makes it difficult to aggregate, process and compare data across banks.” Publication is set for around the end of 2026, with no exact date or implementation deadline specified.

On the G-SIB side, the committee approved the results of its end-2025 assessment exercise, which will go to the Financial Stability Board ahead of the 2026 G-SIB list, and approved revisions designed to reduce window-dressing. The release states that “window-dressing by banks undermines the intended objectives of the Committee’s standards and risks disrupting the operations of financial markets,” with the revisions and a related consultation on European banking union cross-border exposures both due for publication later this month.

Crypto exposure review still open, no detail disclosed

The committee said it is reviewing “targeted elements” of its prudential standard for banks’ cryptoasset exposures, first set under the Basel Framework’s operational risk and capital treatment rules, and will provide an update by year end. The release names no specific provisions under review, gives no indication of direction, and does not say whether the update will include a formal consultation or merely a status report.

For banks already holding digital-asset exposures under the existing capital treatment, that silence leaves the compliance calendar unresolved heading into 2027. The same applies to the IRRBB consultation and the liquidity-principles review, both of which carry only “later this year” language rather than fixed dates.

In practice, the machine-readable disclosure mandate forces internationally active banks to rebuild reporting pipelines that most still run through static PDFs, a cost that falls hardest on mid-sized institutions without existing XBRL-style infrastructure. The window-dressing fix tightens a loophole G-SIBs have used to temporarily shrink balance sheets around reporting dates, which should narrow the gap between quarter-end and daily-average leverage metrics once the revised framework publishes later this month. The AI and operational-risk discussion signals that supervisors are treating AI-linked leverage as a financial-stability line item rather than a pure conduct or model-risk issue, though the committee has not yet proposed a rule.

“Window-dressing by banks undermines the intended objectives of the Committee’s standards and risks disrupting the operations of financial markets.”

Basel Committee release

The BlockWest read. The committee’s decision to fold AI leverage monitoring into the operational risk framework, rather than crypto, is the more consequential crypto-market signal here: it means Basel is watching AI financing chains for bank-system contagion before it finishes its own cryptoasset exposure rulebook. Allocators and crypto desks banking with internationally active institutions should expect the cryptoasset standard update due by year end to lag behind, not lead, the AI risk work.

The Basel Committee said it will provide an update on its targeted cryptoasset exposure standard review by the end of 2026, alongside separate publications on the G-SIB window-dressing revisions, the AML/CFT survey summary and RCAP leverage ratio reports, all due later this month, with the IRRBB Pillar 2 consultation set for October.

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