You can't really close
your account, but you can delete all your info and abandon it, if you
wish. Your account will still be available for you to use at some point
in the future, as long as you use the same User ID and password. You could also
indicate that Intuit emails are spam to keep them out of your regular email.
Here's how to clear out your return:
1. Sign in to TurboTax Online.
2. On the left side, click Tools. (Don't see the side menu on the left? Click here for help.)
3. Click Clear your 2016 return and start over.
o If you already paid, you'll get the message You cannot clear your return.
4. (Optional) In the pop-up, uncheck the box Re-transfer my data after clearing if you don't want last year's data to transfer over.
5. Click Yes to confirm
You would choose "Clear your 2016 return and start over", but then simply don't start over.