How to delete contacts?

Hi adrianitarofe, 

When you make a customer inactive or delete it in QuickBooks Online, the customer is removed from the Client/Customer tab, reporting options, and any other place where customers are listed. To make a customer inactive please see the steps below:

1. Go to Sales, then select Customers or Client tab.
2. Find the customer or client, then in the Action column select Make inactive.
3. Select Yes to confirm the request.

-Steven