Thanks for joining the Community and getting involved with this thread, NAYE1.
 

I can certainly understand how an ability to remove sales tax from subtotals while customizing invoice templates could be useful and have submitted a suggestion about it as of today.
 

You can also submit your own feature requests while signed in.
 

Here's how:

1. Use the Gear () icon, then go to Feedback.
2. Enter your suggestion(s) in the Have feedback? window.
3. If necessary, attach a file with your Camera () icon.
4. Select Next.
   
   

Your feedback's definitely valuable to Intuit. It will be reviewed by our Product Development team and considered in future updates. You can stay up-to-date with the latest news about your product by reviewing Intuit's Product Updates webpage.
 

If you don't charge sales tax, you can turn it off from your Taxes screen:
 

1. In the left navigation bar, go to Taxes, then Sales tax.
2. Click Edit sales tax settings.
3. Change your Do you charge sales tax? option to No.
   
   
    
4. Select Save.

Please feel welcome to send a reply if there's any additional questions. Have a wonderful day!