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Declining discount rates and the ‘Fisher Effect’: Inflated past, discounted future?

Mark C. Greeman (), Ben Groom (), Ekaterini Panopoulou () and Theologos Pantelidis ()
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Mark C. Greeman: Loughborough University

Discussion Paper Series from Department of Economics, University of Macedonia

Abstract: Uncertain and persistent real interest rates underpin one argument for using a declin- ing term structure of social discount rates in the Expected Net Present Value (ENPV) framework. Despite being controversial, this approach has in uenced both the Inter-Agency Working Group on Cost-Benefit Analysis and the UK government's guidelines on discount- ing. We first clarify the theoretical basis of the ENPV approach. Then, rather than following previous work which used a single series of real U.S. Treasury bond returns, we treat nominal interest rates and inflation as cointegrated series and estimate the empirical term structure of discount rates via the `Fisher Effect'. This nests previous empirical models and is more flexible. It also addresses an irregularity in previous work which used data on nominal in- terest rates until 1950, and real interest rates thereafter. As we show, the real and nominal data have very different time series properties. This paper therefore provides a robust- ness check on previous discounting advice and updated methodological guidance at a time when governments around the world are reviewing their guidelines on social discounting. The policy implications are discussed in the context of the Social Cost of Carbon, nuclear decommissioning and public health.

Keywords: Social Discounting; Declining Discount Rates; Fisher Effect; Real and Nominal Interest Rates; Social Cost of Carbon. (search for similar items in EconPapers)
JEL-codes: Q48 C13 C53 E43 (search for similar items in EconPapers)
Date: 2015-01, Revised 2015-01
New Economics Papers: this item is included in nep-ene and nep-mac
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Related works:
Journal Article: Declining discount rates and the Fisher Effect: Inflated past, discounted future? (2015) Downloads
Working Paper: Declining discount rates and the Fisher Effect: inflated past, discounted future? (2015) Downloads
Working Paper: Declining discount rates and the Fisher Effect: Inflated past, discounted future? (2013) Downloads
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