TurboTax's authorized resellers are allowed to offer different/competitive pricing for TurboTax products at their suggested price.
If you have several returns to file, you may be interested in purchasing a TurboTax CD/Download, as you can e-file up 5 federal returns for no extra charge, whereas you will be charged for each return (unless eligible for free filing) using TurboTax Online.
To file an additional return using TurboTax Online, you will need to create a new account. Please see the following TurboTax FAQ for instructions on how to start another return using TurboTax Online.
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