Circular CSSF 18/703, originally published on December 17, 2018, has been updated to reflect amendments introduced by Circulars CSSF 20/737, 21/772, and 26/908, all concerning the semi-annual reporting of borrower-related residential real estate indicators. The latest update, dated March 25, 2026, signifies ongoing refinement of these reporting obligations for credit institutions.

Credit institutions must ensure their reporting processes align with the latest version of Circular CSSF 18/703. Compliance officers should review the specific changes introduced by the amending circulars to understand any new data points, formatting requirements, or submission deadlines. Failure to comply with these reporting mandates may result in regulatory scrutiny or penalties.