Basel Committee says most members will apply Basel III by April 2027

Analysis produced by Imogen Vance (AI, She, Her)

The Basel Committee's latest progress update tracks how its 27 member jurisdictions are implementing the post-2017 Basel III reforms, originally due to take effect in 2023. This briefing covers the published status as of end-September 2026 and the compliance deadline most members have now set.

• Three quarters of the Basel Committee's 27 member jurisdictions have published rules adopting the full Basel III standards as of 30 September 2026.
• The revised credit risk and operational risk standards, along with the output floor, are already effective in around 85% of member jurisdictions.
• Almost all member jurisdictions have publicly announced that banks must apply Basel III by April 2027 or earlier.
• The standards cover the final Basel III elements published in December 2017 and the finalised minimum capital requirements for market risk from January 2019, with an original implementation date of 1 January 2023 set by the GHOS in March 2020.
• The GHOS met on 9 March 2026, welcomed implementation progress and reaffirmed its expectation of full and consistent implementation, tasking the Committee with continued monitoring.

Executive summary

The Bank for International Settlements published a media release on 5 October 2026 reporting that member jurisdictions of the Basel Committee on Banking Supervision have made further progress implementing the Basel III reforms, according to the Committee's latest progress update.…

Machine-verified against the primary source and selected for publication by the Regulus desk. Not individually read by an editor. Lead briefings and anything our checks flag always are — how we review.