Nutritional Facts 1 taco (calculated without optional toppings) equals 267 calories, 5 g fat (1 g saturated fat), 31 mg cholesterol, 421 mg sodium, 36 g carbohydrate, 3 g fiber, 17 g protein. Diabetic Exchanges: 2 starch, 2 lean meat, 1 vegetable, 1 fat.