The question is how long can a person be live in buenos aires on a tourist visa? Besides crossing the border every 90 days are there any other limitations? How long as any one person actually done it? I know people who have been here for up to year, but i feel like after a while someone at the border must realize that you are spending 360 out of 365 days a year in the country and not paying taxes. Is it really that unregulated?