Yes, there is, but only if you haven't filed your return.

Here's how to get into your return.  

1. Open your return if it's not already open.   

2. On the Tax Home screen with the amount of your refund and status, scroll down and select Add a State (don't worry, we're not adding a state) to access your tax forms and worksheets.   

3. In the left menu, select Tax Tools then Print Center.   

4. On the TurboTax Print Center screen, select Print, save or preview this year's return.   

5. On the next TurboTax Print Center screen, select 2020 federal returns and Include Government and TurboTax Worksheets (optional), then select View or Print Forms.   

6. The information will be on the first page, Electronic Filing Instructions for your 2020 Federal Tax Return next to Balance Due/Refund.   

What information do you need to add?

If you already filed your return, you need to amend it in order to add more information.

To amend your 2020 return you must wait until the IRS either accepts or rejects your return.

If the IRS rejects your return, you can add the missing information and re-submit your return.

If the IRS accepts your return, you have to wait until it has been fully processed and you have received your refund. Then you can prepare an amended tax return and mail it in. 

1. In TurboTax, scroll down to Your tax returns & documents. Select Show and then select Amend (change) return, and then Amend using TurboTax Online. (If you don't see Your tax returns & documents, select Tax Home on the left.)
2. Select the reason you’re amending and follow the instructions.