Mimi – You do get 5 efiles for every TurboTax you buy. Yearly I install both the Premier and the Business version myself. They don’t intrude with one another. I might think the identical is so for the 2 variations you employ. So you can keep them both put in and do what you want to do with each. Simply make sure you do not ever open the wrong tax file in the fallacious model. That may mess things up.