how do I prevent the invoice from including sales tax ?

[LynnIvory]

How do I prevent Square from adding sales tax to my invoice

[AdamB]

Welcome to Seller Community and thanks for your post, @LynnIvory. 

To do this, you'll need to either disable taxes for your account or turn off taxes for the items that you have added to your invoice. For instructions on how to do that I would see our help article on creating and managing taxes.