A 1099-NEC is always business income (self-employment). It doesn't matter whether it's issued to your Social Security number or to an EIN. You personally and your sole proprietorship or single-member LLC business are one and the same. If the 1099-NEC is not related to the same business as your other 1099-NECs, then it is indeed for a separate business. What is the nature of your business, and what is the 1099-NEC for that you are trying to make "personal"?
