A Trendy Approach to UK Inflation Dynamics

51 Pages Posted: 29 Jan 2018

See all articles by Kristin J. Forbes

Kristin J. Forbes

Massachusetts Institute of Technology (MIT) - Sloan School of Management; National Bureau of Economic Research (NBER)

Lewis Kirkham

Bank of England

Konstantinos Theodoridis

Cardiff University

Multiple version iconThere are 3 versions of this paper

Date Written: January 2018


This paper uses a "trendy" approach to understand UK inflation dynamics. It focuses on the time series to isolate a low-frequency and slow moving component of inflation (the trend) from deviations around this trend. We find that this slow-moving trend explains a substantial share of UK inflation dynamics. International prices are significantly correlated with the short-term cyclical movements in inflation around its trend, and the exchange rate is significantly correlated with movements in the slow-moving, persistent trend. Other variables emphasized in standard inflation models-such as slack and inflation expectations-may also play some role, but their significance varies and the magnitude of their effects is substantially smaller than for commodity prices and the exchange rate. These results highlight the sensitivity of UK inflation dynamics to events in the rest of the world. They also provide guidance on when deviations of inflation from target are more likely to be temporary, and when (and how quickly) a monetary policy response is appropriate.

Keywords: Exchange rate, inflation, Inflation expectations, monetary policy, Phillips curve, slack, UCSV, UK

JEL Classification: E31, E5

Suggested Citation

Forbes, Kristin J. and Kirkham, Lewis and Theodoridis, Konstantinos, A Trendy Approach to UK Inflation Dynamics (January 2018). CEPR Discussion Paper No. DP12652. Available at SSRN: https://ssrn.com/abstract=3112276

Kristin J. Forbes (Contact Author)

Massachusetts Institute of Technology (MIT) - Sloan School of Management ( email )

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Cambridge, MA 02142
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617-253-8996 (Phone)

HOME PAGE: http://web.mit.edu/kjforbes/www

National Bureau of Economic Research (NBER)

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Lewis Kirkham

Bank of England ( email )

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London, EC2R 8AH
United Kingdom

Konstantinos Theodoridis

Cardiff University ( email )

Aberconway Building
Colum Drive
Cardiff, Wales CF10 3EU
United Kingdom

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