Nutritional Facts 1 taco (calculated without optional toppings) equals 236 calories, 4 g fat (trace saturated fat), 0 cholesterol, 479 mg sodium, 40 g carbohydrate, 5 g fiber, 7 g protein. Diabetic Exchanges: 1-1/2 starch, 1 lean meat, 1 vegetable, 1/2 fruit, 1/2 fat.