John Kay works through the short list of options about money that a newly independent Scotland would need to decide about:
Speculation about Scotland’s currency future would begin on the day Scotland voted for independence — or the day on which a poll showed that this result was likely. Scotland would have three main options — the euro, the pound sterling, or its own distinct money.
The euro is the official currency of the EU, and Scotland would in principle be committed to its adoption. But there would be little enthusiasm for that course in either Edinburgh or Brussels, and Scotland — like the UK — would not meet the criteria on debt and deficits for joining the euro. A vague Scottish aspiration to join the single currency at some distant date would probably satisfy everyone.
The sensible outcome would be continued currency union with England — or with the entity that, in deference to Wales and Northern Ireland, participants in the Scottish debate call rUK — rest of UK. Scotland might ask for — and get — a Scottish economist on the Bank of England’s Monetary Policy Committee (not a representative of Scotland — the rules of the committee preclude representative roles). But that would be the extent of Scottish influence on monetary policy.
[. . .]
If I represented the Scottish government in the extensive negotiations required by the creation of an independent state, I would try to secure a monetary union with England, and expect to fail. Given experience in the eurozone, today’s conventional wisdom is that monetary union is feasible only as part of a move towards eventual fiscal union. But desire to break up fiscal union was always a major — perhaps the principal — motive for independence in the first place.
Scotland could continue to use the pound unilaterally, whether the Bank of England liked it or not — as Ecuador uses the dollar and Montenegro the euro. But this is not really an attractive course, and the only countries that have adopted it are those — such as Ecuador and Montenegro — whose monetary histories are so dire that they prefer to entrust their policies to foreigners.
