On Willi Mutschler’s website, the Euler equation U^c_t = \beta E_t[U^c_{t+1}(1-\delta + R_{t+1})] is written in dynare as follows: `UC = betta*UCp*(1-delt+R);`

But I have seen other books use `UC = betta*UCp*(1-delt+R(+1));`

. In a simple RBC model, both works. So I guess it would not matter much in complex models as well. Thus using either `R`

or `R(+1)`

.