Authors Jason Furman

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The argument for deficits & debt raising interest rates in the US is not increased credit risk, it is that interest rates are a function of economic fundamentals, flows & policy. Deficits/debt change those.

I can't tell if I'm agreeing or disagreeing with @jc_econ.


Increasing government spending or reducing taxes increases demand (or reduces saving). This raises the price of loanable funds or the interest rate.

In a dynamic context, more demand means a stronger economy, the central bank raises interest rates sooner, and long rates rise.

(As an aside, we are not close to the United States needing to worry about credit risk and the risks are more overstated than understated in most other advanced economies too. But credit risk is not always & everywhere irrelevant, just look at the UK in 1976 or Canada in 1994.)

Interest rates have fallen over the last 20 yrs while debt has risen. This does not necessarily mean that debt rising causes interest rates to fall. It could also mean that other things have happened at he same time that pushed down interest rates more than debt pushed them up.

The suspects for these "other things" include slower productivity growth, slower popln growth, higher inequality, less investment, etc. All of which either increase the supply of saving or reduce the demand for investment, reducing the equilibrium interest rate.