As is discussed in the revenue ruling, the former multi-member LLC is now a SMLLC; a disregarded entity.
You need to provide partnership B with a revised form W-9. This will provide partnership B with the necessary information for the k-1 going forward.
Your future k-1 items from partnership B will be reported in various forms in your 1040 depending on what is flowing out to you. Your facts don’t provide any detail on what partnership B activity entails.
*A reminder that posts in a forum such as this do not constitute tax advice.
Also keep in mind the date of replies, as tax law changes.
