TY - JOUR AU - Blanchard,Olivier Jean AU - Weil,Philippe TI - Dynamic Efficiency, the Riskless Rate, and Debt Ponzi Games Under Uncertainty JF - National Bureau of Economic Research Working Paper Series VL - No. 3992 PY - 1992 Y2 - February 1992 UR - http://www.nber.org/papers/w3992 L1 - http://www.nber.org/papers/w3992.pdf N1 - Author contact info: Olivier J. Blanchard International Monetary Fund Economic Counsellor and Director Research Department 700 19th Street, NW Rm. 10-700 Washington DC, 20431 Tel: 202-623-7825 Fax: 202-623-7271 E-Mail: blanchar@mit.edu Philippe Weil Director, Universite Libre de Bruxelles ECARES 50, Avenue Roosevelt CP 114 B-1050 Brussels BELGIUM Tel: 32-2-650-4220 Fax: 32-2-650-4475 E-Mail: philippe.weil@ulb.ac.be AB - Can governments roll their debt over forever in dynamically efficient economies, and thus avoid the need to raise taxes? While the answer is a clear no under certainty, it depends, under uncertainty, on whether public debt provides intergenerational insurance. When it does not, rollover is not possible, even if the rate of return on one-period bonds is below the growth rate. When it does, debt rollover may be possible, even if the return on one-period bonds is above the growth rate. ER -