If the other person has uninstalled it from his/her computer, I don't see why it's unethical.  My original question still stands, however.

The terms of software  purchase and use specifically indicate that it is for use only on the original purchaser's own computers, and no one else's

It will be interesting to see what happens. I suspect there is some coding within the software that will prevent it.

The five return limit is not just a TurboTax rule -- it is the law.

SteamTrain--Ah, I didn't realize that the TOS specified use only for the original purchaser.  And xmasbaby0--yes, that also makes sense.  Thanks to both of you!

Maybe no longer necessary...but here's some of it:

"2.2 You acknowledge and agree that the Software is licensed, not sold. You agree not to use, nor permit any third party to use, the Software in a manner that violates any applicable law, regulation or this Agreement. You agree you will not:

• Provide access to or give the Software or any part of the Software to any third party;
• Reproduce, duplicate, modify, copy, sell, trade, lease, rent or resell the Software;
• Transfer your license to the Software to any other party;"