Taxing my Patience

I received a service renewal notice in the mail.  In the body of the letter, it said the charge is "x" dollars, with a footnote that says "plus tax".  In the tear-off portion that gets returned with my check, the charge is "x" dollars, with a footnote that says "tax included".  I had to call the company today to find out which was correct.  (It's the one with tax included.)