Do I need an additional copy of the software?
No. An additional copy of the software will be of no utility.
The IRS limits e-files of individual income tax returns to five when a taxpayer is using consumer-level software (like TurboTax). You can e-file five returns and then print and mail the sixth.
Maybe you can use the Online Free Edition to file for someone? Or the IRS Free File
https://www.irs.gov/filing/free-file-do-your-federal-taxes-for-free
Thank you. Two out of the five are simple returns, I just thought it would be just as easy to use Turbotax software I bought. Will likely do as you suggest.
Thank you for your prompt and informative response. Don't understand the logic of the IRS imposing such a limit, I would think it would be a programming limit designed into the software. Anyway, I'll probably assist two family members in using the free on-line options as theirs are simple tax returns to do.