State tax filing

You are correct, the state should receive an original return, not an amended return.

Typically, an amended return must have the original return unchanged so that Form 1040X is completed properly, showing the original, the change, and the amended return.

The only way to not get an amended state is to break that rule temporarily. To do this in TurboTax, follow these steps:

1. From the left menu, Cancel Amend to remove any changes currently entered.
    
2. From Tax Home, get back into the return without starting the Amend(change) my return:
   1. Scroll down to Your tax returns & documents, select Show, and then select 2020.
   2. Select Add a state to reopen your return.
   3. Make all the changes that you intend to make with the federal amended return.
   4. Select State from the left menu.
   5. At Let's get your state taxes done right screen, select Continue and run through the state interview.
   6. Run the state Review and complete e-filing the state.

   7. For more information, see: How do I e-file my state after I already filed my federal?
       

3. From Tax Home, get back into the return without starting the Amend(change) my return:

   1. Scroll down to Your tax returns & documents, select Show, and then select 2020.
   2. Select Add a state to reopen your return.
   3. Remove all the changes that you intend to make with the federal amended return.
      ​​​​​​​

4. From Tax Home, get back into the return with starting the Amend(change) my return:

   1. Scroll down to Your tax returns & documents, select Show, and then select 2020.
   2. Select Amend(change) my return to reopen your return.
   3. Make all the changes that you intend to make with the federal amended return.
   4. Amend the federal return electronically. 
   5. Colorado does not allow electronic submission of amended returns. Therefore, TurboTax will prepare documents to mail in. Confirm that the amended return for Colorado matches what you e-filed in step 2, but otherwise, the amended state can be disregarded. Do not mail the amended state return.

For more information, see: 

Do I need to amend?

10 Tax Tips for Filing an Amended Return.