The Office of the Superintendent of Financial Institutions (OSFI) has released a set of proposed rule changes that would bring its Guideline B-2: Large Exposure Limits into line with standards set by the Basel Committee on Banking Supervision standard on banks’ exposures to either a single counterparty, or an interconnected group of counterparties.

Among other things, the proposals would introduce changes to the large exposure limit calculations, including setting tighter limits for exposures to systemically important banks.

They also provide added guidance to banks on OSFI’s expectations for identifying, measuring, managing, and monitoring large exposures.

The proposed revisions would take effect in the first quarter of 2020 for domestic systemically-important banks (D-SIBs).

Comments on the draft guideline are due by Feb. 1, 2019.

OSFI aims to finalize the changes in the spring of 2019.