Even though the economy of a domain during the Edo period was ostensibly operated by subsistence economy system (the Han Autarkies) which was based on the principle of heinobunri (separation of the warrior class from the soil) and the Kokudaka system (tax system based on rice), it was impossible for any domains to be self-sufficient in all supplies.
江戸時代における藩の経済は表向きは兵農分離と石高制の原則に基づいた自給自足的な体制（藩アウタルキー）によって運営されていたが、実際の幕藩体制において、全ての物資を自給自足可能な藩は存在しなかった。