The Political War on Cash: It's About Central Bank Monetary Manipulation

The real reason the war on cash is gearing up now is political: Politicians and central bankers fear that holders of currency could undermine their brave new monetary world of negative interest rates. Japan and Europe are already deep into negative territory, and U.S. Federal Reserve Chair Janet Yellen said last week the U.S. should be prepared for the possibility. Translation: That's where the Fed is going in the next recession.

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So, presto, ban cash. This theme has been pushed by the likes of Bank of England chief economist Andrew Haldane and Harvard's Kenneth Rogoff, who wrote in the Financial Times that eliminating paper currency would be "by far the simplest" way to "get around" the zero interest-rate bound "that has handcuffed central banks since the financial crisis." If the benighted peasants won't spend on their own, well, make it that much harder for them to save money even in their own mattresses.

All of which ignores the virtues of cash for law-abiding citizens. Cash allows legitimate transactions to be executed quickly, without either party paying fees to a bank or credit-card processor. Cash also lets millions of low-income people participate in the economy without maintaining a bank account, the costs of which are mounting as post-2008 regulations drop the ax on fee-free retail banking. While there's always a risk of being mugged on the way to the store, digital transactions are subject to hacking and computer theft.