Is there any way i can start over on my tax return i believe i made a mistake and want to redo them.

In TurboTax Online, you can't Clear & Start Over after you've registered.

If it's convenient, consider opening a new account under a new username.  Up to 5 accounts can be tied to the same email address.

Here’s how:

1. Sign out of TurboTax Online.
2. Select the TurboTax Online product you want to use for the second return and proceed.
3. On the Create your account screen, set up a new login for the second return.

• You can reuse your email address if you want to receive e-file notifications for the second return.
• Up to 5 accounts can be tied to the same email address.

Otherwise, try to post another question about your specific problem and someone should be able to help you fix it.