One way of achieving this goal is as follows:
- First, the ECB buys bonds of a country, say for a value of €100.
- Second, it exchanges these bonds against a perpetual, interest-free loan of €100.
The loan will remain indefinitely as an asset on the book of the ECB but, in effect, it will never be paid back (unless the ECB is liquidated).
The counterpart of this operation will appear on the liability side of the ECB’s balance sheet as a €100 increase in the monetary base. This is the cost of the debt monetisation.
Debt monetisation has a bad reputation, which is justified by the fact that it has often led in the past to runaway inflation.
Under current conditions, this is most unlikely to be inflationary. Given the icy state of credit markets, increases in the money base do not translate into increases of the actual money supply; in effect, the money multiplier is about zero.
In addition, high unemployment has created a deflationary environment. But, hopefully, the credit market will be revived one day and the recession will come to an end. At this stage, the money base will have to be shrunk. This is the exit problem (Wyplosz 2013). An alternative is to raise reserve requirements to reduce the size of the money multiplier. Either way, the balance sheet expansion need not lead to inflation.
One solution is for the ECB to sterilise its entire bond buying under this programme by issuing its own debt instruments, leaving the size of the money base unchanged. This can be done at the time of bond purchases or later, when exit will be undertaken.
Of course, the ECB will have to pay interest on its debt instruments, which will reduce profits and seigniorage to all member countries, both the defaulting ones and the others. This transfer ‘in the right direction’ is the way all member countries will share the loss inherent to debt restructuring*.
*The ECB debt instruments will in effect be Eurobonds, but with a crucial difference from existing proposals. Eurobond proposals only help the distressed countries by reducing the interest rates that they currently have to offer. Under the present scheme, the underlying national debts are de facto eliminated.