AUSTIN, TX – Celebrate National Taco Day at Taco Cabana! On Sunday, October 4, the brand is offering a selection of its popular tacos for $1. Guests can enjoy their choice of the classic bean and cheese, shredded chicken or ground beef tacos this weekend. $1 tacos are available in restaurant, drive-thru, via mobile order through the MyTC! App and for curbside pick-up.