TY - JOUR AU - Angeletos,George-Marios AU - Collard,Fabrice AU - Dellas,Harris AU - Diba,Behzad TI - Optimal Public Debt Management and Liquidity Provision JF - National Bureau of Economic Research Working Paper Series VL - No. 18800 PY - 2013 Y2 - February 2013 UR - http://www.nber.org/papers/w18800 L1 - http://www.nber.org/papers/w18800.pdf N1 - Author contact info: George-Marios Angeletos Department of Economics MIT E52-251 50 Memorial Drive Cambridge, MA 02142-1347 Tel: 617/452-3859 Fax: 617/253-1330 E-Mail: angelet@mit.edu Fabrice Collard University of Bern Departement Volkswirtschaftslehre Schanzeneckstrasse 1 CH-3001 Bern, Switzerland E-Mail: fabrice.collard@vwi.unibe.ch Harris Dellas Department of Economics University of Bern VWI, Schanzeneckstrasse 1 CH 3012 Bern Switzerland E-Mail: harris.dellas@vwi.unibe.ch Behzad Diba Department of Economics Georgetown University Washington, DC 20057 Tel: 202-687-5682 Fax: 202-687-6102 E-Mail: dibab@georgetown.edu AB - We study the Ramsey policy problem in an economy in which firms face a collateral constraint. Issuing more public debt alleviates this friction by increasing the aggregate quantity of collateral. In so doing, however, the issuance of more debt also raises interest rates, which in turn increases the tax burden of servicing the entire outstanding debt. We first document how this trade-off upsets the optimality of tax smoothing and, in contrast to the standard paradigm, helps induce a unique and stable steady-state level of debt in the deterministic version of the model. We next study the optimal policy response to fiscal and financial shocks in the stochastic version. We finally show how the results extend to a variant model in which the financial friction afflicts consumers rather than firms. ER -