IO am trying to buy the mobile app and its trying to bill my apple account linked to my personal card. I am trying to figure out how to change this to charge business.

Hi, @Groundrules. Welcome to the Community!

If you purchase QuickBooks Online through the Apple App Store, the payment can only be processed using the payment method linked to the Apple ID. If you'd prefer to pay with your business card instead, I recommend subscribing directly through our Plans and pricing page on a browser. This will let you enter your business payment details and manage billings directly with QuickBooks.

If you have follow-up questions, feel free to leave a comment.