Cross-country co-movement in long-term interest rates: a DSGE approach

By Michael Chin, Thomai Filippeli and Konstantinos Theodoridis

http://d.repec.org/n?u=RePEc:boe:boeewp:0530&r=dge

Long-term interest rates in a number of small open inflation-targeting economies co-move more strongly with US long-term rates than with short-term rates in those economies. We augment a standard small open economy model with imperfectly substitutable government bonds and time-varying term premia, that captures this phenomenon. The estimated model fits a range of US and UK data remarkably well, and produces term premium estimates that are comparable to estimates from the affine term structure model literature. We find that the strong co-movement between US and UK long-term interest rates arises primarily via correlated policy rate expectations, rather than through correlated term premia. This is due to policymakers in both economies responding to foreign productivity and discount factor shocks that cause persistent changes in inflation. We also overcome the common failure of similar models to account for the large influence of foreign disturbances on domestic economies found empirically, where in our model around 40% of the variation in UK GDP can be explained by shocks originating in the US economy.

Interesting approach to see whether financial intermediation can have an impact on business cycles. I wonder whether the fact that the correlation of long-term interest rates has increased (I think so, right?) has more to do with globalization of markets or monetary policy correlation, or this correlation may even be a result of globalization. This paper opens interesting questions.

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