The nations of the world have kept shifting from fixed exchange rates to fluctuating exchange rates. New currency crises have led to a shift to one system or another, with economists arguing the merits of them, and how to make them work. It is always said that one has flaws but the benefits outweigh the flaws, so one is better. Maybe the truth is that both systems are bad? And yet, what else explains this overriding fact that the world has shifted from the 1920s Anglo-American dollar-pound fixed exchange, then to the Depression and war-time era fluctuating exchange, to the Bretton Woods fixed exchange, to Smithsonian fixed exchange, to fluctuating exchange again, with no reduction in currency crises?
Obviously, international monetary policy has problems that go way beyond exchange rates. It starts with the central banking system. For any given country, it maintains a portion of reserves from all commercial banks. For all transfers of money between banks, all that is needed to be done is that a check be written between banks, and the central bank in its books simply changes the claim on reserves from one bank to another. No actual transfer or redemption of cash need take place. Banks are unlikely, if ever, to redeem any asset. So obviously the central bank can lend from the reserves and maintain a much smaller portion of those reserves with itself. If any bank needs money, it will lend it the money. And all that will be done is that a check be written, and a claim on assets be given to the bank. So if we had three commercial banks with Rs. 2 billion each in the bank, then from the Rs. 6 billion, Rs. 5 billion may be given to one bank as loan. So two banks have total Rs. 4 billion available in deposits, and the other has Rs. 7 billion for use. What just happened? The money supply increased from Rs 6 billion to Rs. 11 billion. It will have to be repaid by the first bank, of course, but that additional Rs. 5 billion will circulate between bank customers, just by writing checks between them, and between banks, just by writing checks, and even abroad. The truth is that there is still only Rs. 6 billion with the central bank, of course, but is confident that nobody will come to redeem all assets from it.
The central bank can also buy bonds from the government, credit the government’s account in the bank with the money paid for it, which in turn is credited to central bank reserves. As you can see, central bank just increased the money supply again, just the way it did by giving loans to banks. All this monetary and credit expansion is an inflationary practice. With only Rs. 6 billion with the central bank, it can easily just increase money supply to Rs. 20 billion or Rs. 40 billion or Rs. 100 billion without problems. No one is ever going to actually excercise claims from deposits anyway. Except foreigners.
Foreigners obviously can just try to redeem assets from the central bank, which are in their account with the local banks. Japan did this often with the US, resulting in a huge outflow of gold bullion from US to Japan. The fact that someone may actually try to take back his money puts central bank inflationism in check. Foreigners don’t trust or rely on offshore banks as often as the domestic people of that nation do. Of course, many governments don’t like that check on them, and thus free currencies from gold and refuse commitments on them. What instead happens is a large number of competing inflationist currencies. If a fixed exchange rate is established, certain currencies end up in shortages, hurting their trade. If a fluctuating one is established, competing devaluations of currencies bring trade to a standstill.
Somehow, a simpler solution of using precious metals as the medium of international exchange as was once used is not considered. Gold or silver, in whatever shape, form, or size, will be valued according to weight anyway, but currencies are a matter of political gain, rather than economic efficiency.