How do I create a bill using the app for a supplier

Hi there, info616,

You can only expense a supplier in the mobile app.

While there isn't an option for this, I suggest logging in to your account in a web browser. By doing so, you'll be able to bill a supplier from there. 

Let me show you how:

1. Sign in to your QuickBooks Online account.
2. Click the + New button from the left navigation bar.
3. Select Bill under Suppliers.
4. Choose a supplier from the Supplier ▼ drop-down menu.
5. Choose a term form the Terms ▼ drop-down menu.
6. Enter the bill date, due date, and bill number.
7. Enter the other needed information under the Category and Item details.
8. Click Save and close.

After that, you can then pay your supplier. Check this out for more details: How to enter and pay bills, then go to the Navigate the Pay Bills screen section for the detailed steps.

Feel free to read through this handy article: Compare mobile app features. It will tell you which QuickBooks Online mobile app features are supported on mobile devices.

Should you have follow-up questions about billing a supplier, just leave a comment below. I'll get back to you.