How to add customers in QuickBooks Online
In QuickBooks Online (QBO), you can add customers from the Customers page or while creating an invoice/sales receipt.
Add a customer from the Customers page:
Go to Sales in the left menu.
Select Customers.
Click New customer.
Enter the customer’s details, such as:
Customer name
Company name
Email
Phone number
Billing address
Shipping address
Payment terms
Tax settings, if applicable
5. Click Save.
You can also add a customer while creating an invoice or sales receipt. In the Customer field, type the new customer’s name, then select Add new.
To import multiple customers:
Go to Settings ⚙️.
Select Import data.
Choose Customers.
Upload your Excel or CSV file.
Map your columns to QuickBooks fields.
Review the data and click Import.
Useful columns for a customer import file include Customer Name, Company, Email, Phone, Billing Address, Shipping Address, and Payment Terms.

