As far as I’m aware, non residents pay a different tariff and don’t have the tv license included on their bills. Residents, on the other hand must make a declaration that they have no TV in order to have license fee deduction removed from their electric bills.
I am also led to believe that this declaration must be made on an annual basis, in December, in order to be excluded for the next year.
I think that when it was first introduced the differentiation between resident and not resident was not made and for a while everyone was billed.