How many people's taxes can you do with one purchase of turbo tax?

[xmasbaby0]

With online TurboTax you get one return per fee.  Each return needs its own account and user ID.

With the CD/download you can e-file up to five federal returns and state returns.   You can prepare more than five if the additional ones are mailed.

https://ttlc.intuit.com/questions/2750704-what-are-the-advantages-of-the-turbotax-cd-download-softwa...

[VolvoGirl]

Online is only good for 1 return per account.  But you can use the same email address for 5 accounts.   How to start another return in the Online version

https://ttlc.intuit.com/community/using-turbotax/help/how-do-i-start-another-return-in-turbotax-onli...

Or go to the IRS Free File programs

Free File: Do your Federal Taxes for Free | Internal Revenue Service

The Desktop CD/Download program can do unlimited returns and efile 5.

[robtm]

If it's the online version you can only do one persons taxes with turbotax. For any others they need to open their own TurboTax account. For the CD/download version you can do up to 5 different  taxes.