Title[ Part 2: The First Pillar - Minimum Capital Requirements
Section[ A. Individual claims
1. Claims on sovereigns
53. Claims on sovereigns and their central banks will be risk weighted as follows:
Credit AAA to A+ to A- BBB+ to BB+ to B- Below B- Unrated
Assessment AA- BBB-
Risk 0% 20% 50% 100% 150% 100%
Weight
54. At national discretion, a lower risk weight may be applied to banks’ exposures to their sovereign (or central bank) of incorporation denominated in domestic currency and funded19 in that currency.20 Where this discretion is exercised, other national supervisory authorities may also permit their banks to apply the same risk weight to domestic currency exposures to this sovereign (or central bank) funded in that currency.
55. For the purpose of risk weighting claims on sovereigns, supervisors may recognise the country risk scores assigned by Export Credit Agencies (ECAs). To qualify, an ECA must publish its risk scores and subscribe to the OECD agreed methodology. Banks may choose to use the risk scores published by individual ECAs that are recognised by their supervisor, or the consensus risk scores of ECAs participating in the “Arrangement on Officially Supported Export Credits”.21 The OECD agreed methodology establishes eight risk score categories associated with minimum export insurance premiums. These ECA risk scores will correspond to risk weight categories as detailed below.
ECA risk scores 0-1 2 3 4 to 6 7
Risk weight 0% 20% 50% 100% 150%
56. Claims on the Bank for International Settlements, the International Monetary Fund, the European Central Bank and the European Community may receive a 0% risk weight.