my experience is somewhere inbetween. I went to AFIP with my certificado de domicilio and they would not give me a CUIT ("make me a monotributista"). The said I had to at least have at least my precaria (what you get when you first apply for residency). Once I presented that I got it with no problem.
I do know others who have gone to their local AFIP office and gotten something like a CUIT for foreigners (not a CDI, I have that too). I don't know anything about this or if it even exists but the rumor is out there so it would be worth investigating.
If you are looking to just teach English, starting a company with the goal of hiring yourself is definitively not the way to go. It just costs too much to start a company in Argentina. I would get a lawyer and just let them help you work it out the simplest way. I would suggest http://www.celano.com.ar/
Good luck
I do know others who have gone to their local AFIP office and gotten something like a CUIT for foreigners (not a CDI, I have that too). I don't know anything about this or if it even exists but the rumor is out there so it would be worth investigating.
If you are looking to just teach English, starting a company with the goal of hiring yourself is definitively not the way to go. It just costs too much to start a company in Argentina. I would get a lawyer and just let them help you work it out the simplest way. I would suggest http://www.celano.com.ar/
Good luck