Recent policy formulation has emphasised targeting rules. These often lead to policy problems which are singular, and need special solution techniques. We set out solutions for the control of singular linear rational expectations models with quadratic objectives. These are both time inconsistent...

We study stationary discretionary equilibria in dynamic linear-quadratic rational expectations models. Past papers have assumed that this is uniquely determined; we show that such models can have multiple equilibria in some situations. We demonstrate the existence of multiple discretionary...