Welcome to the QuickBooks Community, rakchamps21!
The posting account of an invoice is different. I'm happy to share more details.
An invoice is a customer-related transaction and will post in the Accounts Receivable account. You can check the posting accounts when you click More on the Invoice page and choose Transaction journal.
On the other hand, a bill is a supplier-related transaction and will post to the Accounts Payable (Creditors) account. You can check its posting accounts just like checking the posting accounts of an invoice.
Let me know if you need anything else. See also about recording invoice payments.
