Hi, I just installed FA and love it - easiest installation I've ever done.
Most of the setup was easy too.
But I am also having the exact same problem adding Texas Sales Tax.
When I add an item, it indicates the "Price after tax." But it is only the actual retail price of the product - I didn't add the tax.
Then just above the Total amount, it shows the "Included TX sales tax (7.25%) 8.78" but it doesn't add it to the total.
UPDATE... I just found the answer - again, a little counter-intuitive.
"On Sales Types (on the sales page) DON'T set the Retail option to have tax included"
I think it would be more clear to me (I'm a writer, not an accountant) if the option was to "Add tax" to the item, or maybe to leave the option as-is but say something like: "Tax is already included in the item price."
Anyway, I'm happy because now it works the way I want it to.
Ed