In particular, there are policy decisions required in the following dimensions: (i)  eligibility (what collateral should be accepted, and what should not);  (ii)  valuations and haircuts (how much is the collateral worth? );  (iii)  what fees should apply, if any, and  (iv)  limits (how much diversification should we seek across the collateral delivered?). These are important questions for the banking system as a whole, and have presented new and complex risk management challenges for central banks over the past few years. It is on these issues that we focus in this paper.3 To start with, we briefly outline some of the main features of the Bank’s lending operations. The sterling monetary framework The Bank’s main activity in the sterling market prior to the financial crisis was via its shortterm repo open market operations (STR OMOs). Those regular weekly operations provided the banking system with the right level of reserves such that short-term market interest rates would remain close to Bank Rate set by the MPC.4 In addition, in order to reduce the size of weekly STR OMOs to a manageable size, the Bank undertook longer-term repo OMOs (LTR OMOs) of 3, 6, 9 and 12 months maturity. The remaining operation of note was the Standing Facilities in which a commercial bank could borrow from, or lend to the Bank overnight, albeit at a less attractive rate than Bank Rate.
That means that less conservative haircuts would sometimes be required to support a given level of borrowing. That will benefit counterparties as well as deliver risk management benefits to the Bank. The Bank will also require the data to be made available to investors and other market professionals, so that they will be able to undertake their own risk analysis. That should deliver longer-term benefit to the financial system as a whole – standardising, simplifying and publicising the data should all reduce the mechanical reliance on third party judgments and  8  The counterparty can meet the margin call by either providing more collateral, substituting some of the existing collateral with higher quality assets which receive a smaller haircut, or returning some of the lent funds. 9  The aim would be for the Bank’s risk tolerance to be broadly the same for loans as for a securitisation of those same loans, so as not to provide incentives to submit one form of collateral over the other. BIS central bankers’ speeches  7  models, and hence reduce “single points of failure” within the ABS market (although it will be up to market participants to make best use of these changes). Other policy issues on the agenda There are some big issues facing the Bank and its collateral management going forward. The immediate challenge is to wind down the SLS to its conclusion in January 2012.