When you use Online TurboTax, you get one return per fee. Each return needs its own account and user ID. If you use the same account and user ID for a second return, you overwrite the first one and lose it forever.
When you use Desktop TurboTax, which you install from a CD or download to your own hard drive, you can prepare and e-file multiple returns for the cost of the software. You can e-file up to 5 Federal returns—more if you mail the additional ones. If you have multiple returns to prepare for family members, Desktop is more cost effective.
Desktop --unless you specifically buy federal Deluxe only from a retailer-- will include the software for one specific state. You can prepare as many returns for that state as the number of federal returns you prepare. E-filing state returns is an extra fee which can be avoided by printing and mailing the states. Additional--other--state software is an additional fee for the software.
2020 TURBOTAX
CD/DOWNLOAD (This requires a full PC or Mac—-cannot be used on a mobile device)
https://turbotax.intuit.com/personal-taxes/cd-download/
You can also purchase the CD/download from various retailers such as Costco, Amazon, Walmart, Best Buy, Staples, Sam’s Club, etc. etc. etc.
This link Where can I obtain authentic TurboTax software? has a list of authorized TurboTax resellers.
When you use desktop software, there is an additional fee to e-file a state return. You can avoid that fee if you print, sign and mail the state return. The state e-file fee is $19.99 and increases in March.
ONLINE 2020
https://turbotax.intuit.com/personal-taxes/online/
And just so you know—online prices go up in March
It is the same price to buy the CD or buy the desktop download program. Unless you really mean to use the Online version. Online is only good for 1 return per account. So you would have to pay 3 times. Look in the stores to buy the Desktop CD/Download cheaper. Costco has a coupon right now.