Tag Archives: Interest rates

How important are interest rates for exchange rates?

Fernando Eguren-Martin and Karen Mayhew.

Many would say that when domestic interest rates rise (relative to abroad) the domestic currency will appreciate. But is it right to think like this? In this blog we use exchange rate theory to inform this discussion and to assess the importance of relative interest rates in accounting for past exchange rate moves. We find that relative interest rates typically move in the same direction as exchange rates but most of the time they account for a small share of exchange rate variation. However, academics might question our use of such a theory as its failure to forecast exchange rates is well documented. We show that this is somewhat unfair, as even if the framework is not very useful in terms of forecasting it is still a useful tool for decomposing past moves in exchange rates.

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Filed under Currency, Financial Markets

UK mortgage rates: born in the USA?

Authors: Gareth Anderson and Matt Roberts-Sklar.

UK mortgage rates play an important role in the transmission mechanism of monetary policy, but are they home-grown? UK swap rates are a key component in determining UK mortgage rates. And UK swap rates are highly correlated with those in the US. Putting these pieces together, we show that UK mortgage rates increase by around 50bp on average in response to a 100bp increase in US swaps. This highlights one important channel through which global financial spillovers affect small open economies such as the UK.

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Filed under Financial Markets, International Economics, Macroeconomics, Monetary Policy