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A flawed model of monetary policy

In a recent post, Global Warning, we looked at concerns about the global economy. One of these was about the ineffectiveness of monetary policy to stimulate aggregate demand and to restore growth rates. Despite the use of unconventional monetary policies, such as quantitative easing and negative interest rates, and despite the fact that these policies have become the new convention, they have failed to do enough to bring sustained recovery.

The two articles below argue that the failure has been due to a flawed model of monetary policy: one that takes too little account of the behaviour of banks and the drivers of consumption and of physical investment. Negative interest rates on banks’ holdings of reserves in central banks are hardly likely to push down lending rates to businesses sufficiently to stimulate investment in new plant and machinery if firms already have overcapacity. And consumers are unlikely to borrow more for consumption if their wages are barely rising and they already have debts that they fear will be difficulty to pay off.

As Joseph Stiglitz points out:

As real interest rates have fallen, business investment has stagnated. According to the OECD, the percentage of GDP invested in a category that is mostly plant and equipment has fallen in both Europe and the US in recent years. (In the US, it fell from 8.4% in 2000 to 6.8% in 2014; in the EU, it fell from 7.5% to 5.7% over the same period.) Other data provide a similar picture.

And the unwillingness of many firms and individuals to borrow is matched by banks’ caution about lending in an uncertain economic environment. Many are more concerned about building their capital and liquidity ratios to protect themselves. In these circumstances, negative interest rates have little effect on stimulating bank lending and, by hurting their balance sheets through lower earnings on the money markets, may even encourage them to lend less

What central banks should be doing, argue both Stiglitz and Elliott, is finding ways of directly stimulating consumption and investment. Perhaps this will involve central banks “focusing on the flow of credit, which means restoring and maintaining local banks’ ability and willingness to lend to SMEs.” Perhaps it will mean using helicopter money, as we examined in the previous blog. As Larry Elliott points out:

The fact that economists at Deutsche Bank published a helpful cut-out-and-keep guide to helicopter money last week is a straw in the wind.

As the Deutsche research makes clear, the most basic variant of helicopter money involves a central bank creating money so that it can be handed to the finance ministry to spend on tax cuts or higher public spending. There are two differences with QE. The cash goes directly to firms and individuals rather than being channelled through banks, and there is no intention of the central bank ever getting it back.

So if the model of monetary policy is indeed flawed, prepare for more unconventional measures

What’s Wrong With Negative Rates?, Project Syndicate, Joseph Stiglitz (13/4/16)
The bad smell hovering over the global economy The Guardian, Larry Elliott (17/4/16)


  1. What arguments does Stiglitz use to support his claim that the model of monetary policy currently being used is flawed?
  2. In what ways has monetary policy hurt older people and what has been the effect on their spending and on aggregate demand in general?
  3. Why has monetary policy encouraged investors to shift their portfolios toward riskier assets?
  4. Examine the argument that ultra-low interest rates may result in a rise in unemployment in the long term by affecting the relative prices of capital and labour.
  5. What forms might helicopter money take?
  6. Would the use of helicopter money necessarily result in an increase in aggregate demand? What would determine the size of any such increase?
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