Bankers clear and settle with each other at a clearing house Perry Mehrling had in interesting comment about how to settle the Eurosystem's Target2 imbalance problem. If there were Eurobills, balances could be settled periodically by transfer of assets, just as is done in the Federal Reserve System. More precisely, if there were a System Open Market Account at the ECB, in which all of the national central banks held shares, settlement could be made by transfer of shares. Perry is talking about adapting the structure of the Fed's Interdistrict Settlement Account to Europe. To understand the ISA, check out my Idiot's Guide to the Federal Reserve Interdistrict Settlement Account . In short, the 12 regional Reserve banks run up debts and credits to each other over the course of the year due to changes in payments flows. These debts and credits are settled each year by transferring securities that have been bought in open market operations from debtor Reserves banks to credit...