If I make an invoice I need to select a tax rate Like e.g. Los Angeles 9.5%... How can i show this on the invoice send to the customer as well ? because it only says "TAX

I know how essential it is for you and your business to show the details of the taxes on invoices, Wrap.
 
Currently, the option to show the tax details on invoices is unavailable in QuickBooks Online (QBO). I understand your need for functionality and would love to hear your thoughts about your experience. This enables our product developers to consider using the new layout. 
 
Here's how:
 

1. Go to the Gear menu and then select Feedback.
2. Type in your feature request in the description box.
3. Once done, click on Next.

Once done, our designated team will review it. You can track your future requests through the QuickBooks Online Feature Requests website.

Additionally, I'm also adding some related links to help you further with customizing your sales form:

• Add, customize, or remove logos on sales forms
• Customize invoices, estimates, and sales receipts in QuickBooks Online
   

I'm all ears if you have other concerns about customizing sales forms in QBO. You can drop a comment below, and I'll gladly help. Stay safe.