Turn your personal account into a business account.

You'll keep your purchase history and account details that are part of your current BestBuy.com account.
You'll need to sign into your personal account first.
Make Mine a Business Account
or

Create a separate business account.

With this option, your personal account won't change. You'll have a separate account just for business purchases.
Let's get started with creating your free online business account.
Create a Business Account