Can I add my deposit

What type of deposit are you referring to?  If you mean a federal tax refund from a prior tax year, that is not entered on a federal tax return.

If you are asking if you can add direct deposit information to your tax return, you can, as long as you haven't filed it yet. 

 

Here's how to do that:

 

 

1. Sign in to your TurboTax account
2. Select File.
3. Select Start or Revisit next to Step 2 Your refund info.
4. Select Other refund options on the Get your refund up to 5 days early screen.
5. Choose Direct deposit and Continue.
6. Enter your bank account info and Continue.
7. Your federal refund is now set up for direct deposit.

If that isn't what you are asking about, please reply with more detail of what you are trying to do.