A double-entry method of accounting may date from the 11th century in Korea, but extant commercial ledgers are no older than 1854.
This paper examines a double-entry method used in the accounts (1741-1883) of the (Namp'yong) Mun Clan Association (MCA), (2) an organization that is still active in Cholla Province.
Many of the basic principles of the double-entry method are apparent--personification of accounts, dual entry, integration, and periodicity.
Nevertheless, it is often asserted that Korean merchant houses in Kaesong City traded with China and Arabia and developed, as early as the mid-Koryo period (11th-13th centuries), a double-entry method known as the sagae Songdo ch'ibubop (four-sided Kaesong ledger method).
Hymn's primer outlines an indigenous, double-entry method in which he defines terms and offers examples.