If you already filed, you will need to wait until the IRS has either accepted or rejected your return. And yes, only Premier or Self-Employed online versions support K-1 entry, so you will need to upgrade to enter it.
- If they reject it, you just make the needed changes and re-submit the return.
- If they accept it, you will need to wait until you have received your refund and then amend that return to make changes. Amended returns have to be printed and mailed in and take up to 16 weeks to be processed.
If accepted, after you have received your refund, you can go here and get instructions https://ttlc.intuit.com/questions/3402261 for amending that return.
And you can follow these steps to get to that portion of the interview to enter your K-1.
- Log into your account and click the orange Take me to my return button
- Type k1 in the Search box in the top right corner and choose jump to k1
- You should be taken to the page that asks Did you receive any Schedules K-1 or Q? and you can want to answer Yes there
- The next page will ask you to choose the type of Schedule K-1 that you have and you can choose Start next to the type of K-1 you received there and follow prompts.
See some reasons you'd need to amend your return below
https://ttlc.intuit.com/replies/3318732
