JR1 wrote:I was going to say that IRS attaches the owner's name to the Sch. C, but wasn't sure about LLC's, even disregarded.
Yep. I think OP is asking about how to change the name that the EIN is attached to. At least, that's what I read into it.
If there is no EIN, and the SMLLC just uses the owner's SSN as its tax ID, I would think you'd just update the LLC name on next year's Sch C.