Currently, we're unable to add a vendor type in QuickBooks Online. I'd recommend letting our Product Development Team know about your idea. You can click the Gear icon in the upper-right corner and select Feedback.
Temporarily, you can use the Other field in the Vendor Information to indicate the vendor type.
- Select Expenses on the left menu and go to the Vendors tab.
- Click the New vendor button or select the existing vendor profile.
- If you select the existing vendor profile, you can click the Edit button.
If you click the New vendor button, enter the vendor details.
- In the Vendor Information window, enter the vendor type in the Other field manually.
- Click Save.
I'd appreciate your feedback and let me know if you need anything else.