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Government Debt Management: The Long and the Short of It

Elisa Faraglia (University of Cambridge)

1er mars 2017  -  11:00-12:30, salle Extranef 109

Host(s): Jean-Paul Renne

Our aim is to provide insights into some basic facts of US government debt management by introducing simple financial frictions in a Ramsey model of fiscal policy. We find that the share of short bonds in total U.S. debt is large, persistent, and highly correlated with total debt. A well known literature argues that optimal debt management should behave very differently: long term debt provides fiscal insurance, hence short bonds should not be issued and the position on short debt is volatile and negatively correlated with total debt. We show that this result hinges on the assumption that governments buy back the entire stock of previously issued long bonds each year, which is very far from observed debt management. We document how the U.S. Treasury rarely has repurchased bonds before 10 years after issuance. When we impose in the model that the government does not buy back old bonds the puzzle disappears and the optimal bond portfolio matches the facts mentioned above. The reason is that issuing only long term debt under no buyback would lead to a lumpiness in debt service payments, short bonds help offset this by smoothing out interest payments and tax rates. The same reasoning helps explain why governments issue coupon-paying bonds.

Solving dynamic stochastic models of optimal policy with a portfolio choice is computationally challenging. A separate contribution of this paper is to propose computational tools that enable this broad class of models to be solved. In particular we propose two significant extensions to the PEA class of computational methods which overcome problems due to the size of the model. These methods should be useful to many applications with portfolio problems and large state spaces.

Liste des prochaines séances

demain The New Keynesian Cross: Understanding Monetary Policy and Forward Guidance with Heterogeneous Households
Florin Bilbiie (Paris School of Economics)
11:30-13:00, salle Extranef 109

click here [↓] to go to the attached pdf

Plus d'information
20 décembre 2017 Seminar CANCELLED and postponed to May 30, 2018 - Eduardo Morales (Princeton University)
Host(s): Frederic Robert-Nicoud

click here [↓] to go to the attached pdf
21 février 2018 Jean-Robert Tyran (University of Vienna)
Host(s): Adrian Bruhin
11:00-12:30, salle Extranef 109

click here [↓] to go to the attached pdf
1er mars 2018 Andrea Ichino (EUI Florence)
Host(s): Elena Esposito

click here [↓] to go to the attached pdf
8 mars 2018 Nicola Gennaioli (Bocconi University)
Host(s): Dominic Rohner
11:00-12:30, salle Extranef 125

click here [↓] to go to the attached pdf
21 mars 2018 Yves Sprumont (Université de Montréal)
Host(s): Bettina Klaus
11:00-12:30, salle Extranef 109

click here [↓] to go to the attached pdf
19 avril 2018 Nicole Maestas (Harvard University)
Host(s): Jürgen Maurer
11:00-12:30, salle Extranef 109

click here [↓] to go to the attached pdf
31 mai 2018 Monika Piazzesi (Stanford University)
Host(s): Jean-Paul Renne
11:00-12:30, salle Extranef 109

click here [↓] to go to the attached pdf
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