Swerve, Monkfruit and other erythritol sweeteners have carbs that are not broken down by the body so they are not counted in the net carbs. These muffins have 12 grams total carbs. Of this 5.5 grams is from the sweetener. This leaves 6.5 grams of carbs. Once you subtract the fiber (another carb that does not impact blood sugar) each muffin has 3.5 grams of net carbs.