Does everyone in the family need the same Google account?

No. Only the person who buys the plan uses their Google account for it. Everyone else joins with a join code.

More on this topic

• What plans are there, and what do they cost?
• Is there a free trial?
• How do I use the code from Joann's book?
• My book code isn't accepted
• How do I cancel?
• What happens when the plan ends?