BoE has published a paper on central counterparty (CCP) loss-allocation rules. To avoid a CCP’s insolvency, these rules allocate among the CCP’s participants any losses exceeding the CCP’s pre-funded default resources, such as the margin posted by clearing members (CMs), the mutualised default fund and the CCP’s own equity. The options the paper suggests include calling additional resources from CMs, applying haircuts to margin owed to any CM or terminating unmatched open contracts. The paper also offers principles to guide the design of loss-allocation rules and provides some examples of existing loss-allocation rules.(Source: CCP Loss-Allocation Rules)