Consumers can't e-file more than 5 returns per IRS regulations. It doesn't matter if you were to buy extra copies of the program.
You might be able to e-file more than 5 returns online, because each account is a separate "person", but each account also has a separate filing fee. But I don't make any promises.
There may be a way around the limit with the desktop software, depending on how the IRS tracks e-filed returns, but I'm not going to comment further than that, because it's against the regulations and I don't want to take the repercussions if my guesses don't work. It's up to you if you want to try and experiment. But officially, 5 is the limit.
