The Central Bank of Russia has published a consultation paper setting out tougher credit concentration rules for the banking sector. From 1 January 2028, it plans to revise the N6 and N21 concentration ratios by applying a 100% risk weight to all corporate borrowers, replacing the current approach under which some borrowers receive reduced risk weights. The change will apply to all banks, not only systemically important banks, and the regulator now intends to use the effective concentration ratios rather than introduce a new N30 ratio. The package is designed to reduce the risk that concentrated lending shifts to smaller banks. Institutions with elevated concentration levels will be allowed to reduce them gradually without additional supervisory measures or restrictions. To push banks toward the target of 25% of capital per group of related borrowers, the regulator will require a new contribution to the compulsory deposit insurance fund until that threshold is met. From 2026, banks will also be able to redistribute concentration exposures using credit default swaps and credit digital financial assets, and they will be allowed not to group operationally independent companies as related borrowers. The Central Bank of Russia plans to complete the regulatory framework in 2026 and 2027 so the changes can take effect from 1 January 2028. Feedback on the consultation paper is invited through 5 June 2026, and amendments to the instruction on calculating the ratios will be published soon for regulatory impact assessment.