Can we see all our VAT client list

Hi muhammadmobin

Thanks for posting on the Community.

There currently isn't a place in QuickBooks Online Accountant to view VAT-registered clients and their upcoming VAT periods. We agree this would be a useful feature to have, and recommend submitting feedback to our developers for this (via the Cog > Feedback in QuickBooks). 

As a workaround, you can utilize workflows to create a project for VAT returns. To do this, navigate to Work > Manage templates > Select create project beside the VAT returns Quickstart templates. From here, you can edit dates, clients, and assignees, and set up reminders including submitting the return and recording the VAT payment.