The fiscal theory, of price determination suggests that if primary, surpluses evolve independently, of government debt, the equilibrium price level "jumps" to assure fiscal solvency. In this non-Ricardian regime, fiscal policy-not monetary policy-provides the nominal anchor. Alternatively, in a Ricardian regime, primary surpluses are expected to respond to debt in a way that assures fiscal solvency, and the price level is determined in conventional ways. This paper argues that Ricardian regimes are as theoretically, plausible as non-Ricardian regimes, and provide a more plausible interpretation of certain aspects of the postwar U.S. data than do non-Ricardian regimes.