The ledger is a permanent summary of all amounts entered in supportingjournals (day books) which list individualtransactions by date. Usually every transaction, or a total of a series of transactions, flows from a journal to one or more ledgers. Depending on the company's bookkeeping procedures, all journals may be totaled and the totals posted to the relevant ledger each month. At the end of the accounting period, the company'sfinancial statements are generated from summary totals in the ledgers.[1]
Sales ledger (debtors ledger): recordsaccounts receivable. This ledger records the financial transactions between the company and its customers. This shows which customers owe money to the business, and how much.
Purchase ledger (creditors ledger): records transactions between the company and its suppliers (i.e. usually purchases by the company). This shows to which suppliers the business owes money, and how much.
The termledger stems from the English dialect formsliggen orleggen, meaning "to lie or lay" (Dutch:liggen orleggen, German:liegen orlegen); in sense, it is adapted from the Dutch substantivelegger, properly "a book lying or remaining regularly in one place". Originally, a ledger was a large volume ofscripture or service book kept in one place in church and openly accessible. According toCharles Wriothesley'sChronicle (1538), "The curates should provide a booke of the bible in Englishe, of the largest volume, to be a ledger in the same church for the parishioners to read on."[4]
In application of this original meaning the commercial usage of the term is for the "principal book of account" in a business house.[4]
Distributed ledger, sometimes called a shared ledger, is a consensus of replicated, shared, and synchronizeddigital data geographically spread across multiple sites, countries, and/or institutions.[5]