It’s to do with payment systems. Bear with me.
In the U.K., payments between customers of different
banks, or the banks themselves, are handled through a system called CHAPS. Briefly, what happens is this. Bank A needs to send some money to Bank B, so
they send them a message – a payment instruction. This message gets copied to the Bank of
England, with whom both A and B hold accounts.
The Bank of England debits A’s account and credits B’s; B then knows it
has the money and can dispose of it as per the underlying transaction. So far
so good.
Until the late ‘90s, the totting-up took place once a day,
after close of play, it being assumed that the system was based on trust and the Bank of England would carry the
can should Bank A not cough up– until some bright spark there woke up one day and
said “erm, actually, we won’t. Because
they might break their promises, and we can't afford the consequences.” Thus
was born the system known as Real Time Gross Settlement, or RTGS.
RTGS says, in effect, that Bank A must be able to afford
the payment at the moment it sends the instruction to Bank B. In other words, it must have the money in its
account at the Bank of England, there and
then. If it hasn’t, it must ‘post
collateral’, which means pledging items of value, such as securities, against
this debt. In practice, payments tend
to flow in both directions during the day between A and B (and there are of
course the equivalent of overdraft limits before the need for collateral kicks
in). So it worked fine for years.*
Then, enter the Euro.
After a few false starts, they realised that they needed something
similar, covering the Eurozone of seventeen countries, and after a few false
starts they came up with a system which is an almost exact replica of the
above, but with an extra layer added at the top – in addition to the Banks A, B
etc. paying their national central banks (Bank of England equivalents), the
national central banks would also need to settle with each other. Obviously, this would be done through the
central banks’ central bank, the European Central Bank (ECB). The system they put in place for this is called
TARGET.**
What they forgot, though, was RTGS. Remember that? Cash on the nail. Of course, TARGET provides for this within
each country – but there is absolutely nothing that forces the national central
banks – the countries – to settle with each other at the ECB. No totting up at all, ever, never mind payment by
payment. Oh, and no need for collateral either.
Just keep running up the debts – and dues– for ever.
Which is exactly what has happened. So now you know.
That’s why there’s a Euro crisis.
No recourse for broken promises.
If only they'd asked me at the time!
* I do wonder how it coped with the events of 2007-8. Hmm ...
** TARGET2, to be
exact, if you want to Google it – the Wikipedia article is excellent, though it
does require a bit of concentration.