After you file

Try these steps to diagnose the issue with your duplicate farm:

You may have inadvertently entered more than one farm business in your tax return. Revisit the Federal>>Income & Expenses>>Rentals, Royalties, and Farm>>Farm Income and Farm Rental section to make sure you have only one farm.

A previously entered but deleted attempt to enter the farm income or expenses may still be in your tax return.  Use the "Delete a Form" feature to check for more than one Schedule F in your return.  Then, you must check the Farm business you do have entered, to make sure it has all the income and expenses for your farm.

Here's how to check for an extra form in TurboTax Online: 

1. Open or continue your return in TurboTax.
2. In the left menu, select Tax Tools and then Tools.
3. In the pop-up window Tool Center, choose Delete a form.
4. Scroll down the page and look for Schedule F.  If you have more than one, choose the one you want to delete.
5. Select Delete next to the Schedule F you want to delete and confirm the deletion.

Click here for the full article on deleting a form in TurboTax.