Now I am constructing a model solve the Ramsey problem with pure fiscal polices: taxation and debt. And I use the command ramsey_policy, yet the optimal capital income tax rate at the steady state is different from zero, which is contradictionary to what is well known. So I ask for an example of pure optimal fiscal policy by using Dynare. So far what I can find with the command ramsey_policy are all about monetary policies or monetary and fiscal policies.
Thanks!