I added it all up (because I'm doing MyFitnessPal and wanted to log it properly) and each serving has 2,082 mg of sodium per serving (suggested amount per day is 2500 mg or less)... and I used low sodium taco mix!
Also, since you wrote that a packet of taco seasoning could be substituted for all of the spices, I added 6 tablespoons of Ortega 40 % less sodiumTaco Seasoning Mix.