Sakai Tadatsugu was awarded the coastal region consisting of Tagawa, Akumi and Murayama districts, which increased his kokudaka from 38,000 koku to 138,000 koku, and then to 150,000 koku. However, the lands of the Shōnai region were fertile and well-watered, and eminently suited for growing rice, which gave the Sakai clan actual revenues of more than 200,000 koku.
Sakai Tadatsugu's landholdings grew after receiving a coastal region with Tagawa, Akumi, and Murayama districts, which boosted his kokudaka (land tax). The fertile Shōnai region was ideal for rice cultivation, resulting in significant revenue for the Sakai clan.