New Apple ID
I would like to open a NEW Business Apple ID separate from my personal Apple ID. Is that permissible?
iPhone 6s, iOS 12
It is. If you want to be able to share purchases between the 2 IDs, try setting up Family Sharing.
Family Sharing - Use your own Apple ID for Family Sharing
Family Sharing -What types of content can I share?
Family Sharing - If you don‘t see your family‘s shared content
Family Sharing - purchases and payments
Family Sharing - Hide and unhide music, movies, TV shows, audiobooks, and books
Family Sharing – share iCloud Storage
Family Sharing - Share an iCloud storage plan with your family