After you file

If your return has been transmitted and rejected by the IRS, you can correct your tax return and re-transmit.

If your return has been transmitted and accepted by the IRS, you will have to amend your Federal 1040 tax return.  However, before amending your tax return, do not enter the return and do not make any changes.

If you used TurboTax Online, log in to your account and select Amend a return that was filed and accepted.

If you used the CD/download product, sign back into your return and select Amend a filed return. 

See also this TurboTax Help.

To import a CSV crypto file into TurboTax Premium Online, follow these steps: 

1. Down the left side of the screen, click Federal.
2. Down the left side of the screen, click Wages & Income.
3. Click the down arrow to the right of Investments and Savings.
4. Click to the right of Stocks, Cryptocurrency, Mutual Funds, Bonds, Other (1099-B).
5. Click Add investments.
6. On the Let's import your tax info screen, select Enter a different way.
7. On the OK, let's start with one investment type screen, select Cryptocurrency, then Continue.
8. At the screen Select your crypto experience, select and Continue.