How do I invoice one of my vendors?

Welcome to the Community, info-sjerentals-.

You've come to the right place for assistance. I'm happy to show you how to invoice your vendor in QuickBooks Online.

To invoice your vendor, they would also need to be setup as a customer in your QBO account. QuickBooks allows for only one name as either a vendor or customer so when you create the vendor as a customer you would need to make a slight change. For example, vendor "John Smith" would need to be entered as "John B. Smith" or "John Smith2" for the customer profile. Here's how to add a new customer:

1. Go to Sales, then select Customers.
2. Select New customer.
3. In the Customer display name field, enter what you want to display for the customer. 
4. Then, review each section and enter any other important customer info. 
5. If the customer is tax exempt, go to the Additional info section and select the checkbox for This customer is tax exempt. Then, select why they’re tax exempt in the Reason for exemption ▼ dropdown.
6. Select Save.

The following article provides additional details about adding and managing customers in QuickBooks Online. Once you've done that, you're ready to create and send their invoice. 

With this info you'll be able to send an invoice to your vendor. Please don't hesitate to reach back out if you have any other questions. I'll be here to lend a hand.