The spread between short term rates and long term rates (the yield spread) is an important economic indicator. Some use the spread between 2-yr notes and the 30-yr bond. Others prefer the 3-mo T-Bill for the short side or the 10-year note on the long side. A negative yield spread (where short term rates are higher than long term rates) often precedes a recession.
Currently, the yield spread is at record levels. Many interpret this a indicating future inflation. It is true that when inflation is rising, it will cause the yield spread to widen. But the real long term rate is already high. The yield spread is not behind the curve, trying to catch up to inflation; it is ahead of the curve, anticipating inflation that hasn't arrived. This is very deflationary.
The problem is that incomes will not grow fast enough to absorb available production. But the high yield spread rewards delaying consumption, which increases the disconnect between incomes and available production. The resulting slow down in production further crimps the growth of income, leading to greater demand for credit, higher rates and further delays in consumption.
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