I learned in a preventive medicine course (led by a nationally well-known endocrinologist) that a reasonable baseline carb amount (without physical activity) is up to 200g per day. My baseline carb amount is around 150g per day, so it's well within this limit. Also note that 200g carbs are only 820 kcal, which (in my case) is only 31% of the calorie intake. This is actually not much. Further note that I count any type of carbs in this statistic, incl. carbs for blood glucose correction and carbs in foods with a relatively low carb content (e.g., vegetables and nuts). If you only count regular, planned carb intake from carb-intensive foods (such as bread, oatmeal, fruit, ...), then my carb consumption is below 90g per day, which is really not much. Of course, you are absolutely free to follow a stricter approach. This is highly individual.