It depends on what you're looking for. Some people might say that buying carpet in the spring is the best option, because new inventory is hitting the market and retailers are looking to make room for new merchandise. Others might recommend waiting until fall, when retailers are trying to get rid of older stock and offer better deals. The bottom line is that there isn't really a "best" month to buy carpet - it all depends on what you're looking for. If you want the newest designs and latest trends, then buying in the spring would be your best bet. But if you're willing to wait for better deals, then autumn could be a good time to shop around.