Hello everyone,

In my model, I want to analyze the effects of temporary fiscal measures in response to an import price shock.

The import price (`P_i`

) is exogenously given and is increased by a shock (`e_i`

):

```
log(P_i)=(1-rho) * log(steady_state(P_i (-1)))+rho * log(P_i (-1))+e_i
```

A portion of this price increase is intended to be offset by the government through subsidies, so that the effective costs (`C_eff`

) for the import of I for the firms are as follows:

```
C_eff=P_i * I+sub * steady_state(I) * (steady_state(P_i) - P_i)
```

`sub`

indicates the proportion of the cost increase that is subsidized by the government. However, the subsidies are only intended to be temporary from period 0 to 3. Therefore, I defined the variable `sub`

as follows (`kappa`

is just a scaling factor):

```
sub=(e_i+e_i(-1)+e_i(-2)+e_i(-3))/kappa
```

When I perform a stochastic simulation, changing sub has no effect on `C_eff`

(with `order=2`

). Is this because a change in `sub`

has no effect in the steady state? However, with a deviation of P_i from steadystate, sub should have an effect on the effective cost.

Unfortunately, I couldn’t find anything about this issue in the forum so far, perhaps I haven’t found the right term for the topic. I would therefore also appreciate hints to appropriate threads.

Thank you in advance for your support.