I have tried amending my 2024 return to add a 1099 Interest form. The calculations in Turbo Tax were not correct for the Federal or State. Any thoughts??Maggie

When you first start to Amend, you should see the Refund Meters change to $0.  In your case, adding interest income may change your return, or it may not.  Since we can't see your return in this forum, it depends on several factors.  After you added your interest form, if the amounts didn't change, you may not need to file an Amended Return.  In that case, just save your new 1099 with your tax records.

You could also review the 1040X to verify the added interest on Line 2a and/or 2b.  If you don't need to Amend, here's How to Undo an Amendment.  

If you can be more specific about what calculations are incorrect, we'll try to help.

@Maggiecp2