Luca Pacioli and the birth of modern accountancy

Luca Pacioli (1445 - 1517), also known as Friar Luca dal Borgo, is credited for the "birth" of accounting. His Summa de arithmetica, geometrica, proportioni et proportionalita (Summa on arithmetic, geometry, proportions and proportionality, Venice 1494), a synthesis of the mathematical knowledge of his time, includes the first published description of the method of keeping accounts that Venetian merchants used at that time, known as the double-entry accounting system. Although Pacioli codified rather than invented this system, he is widely regarded as the "Father of Accounting". The system he published included most of the accounting cycle as we know it today. He described the use of journals and ledgers, and warned that a person should not go to sleep at night until the debits equalled the credits! His ledger had accounts for assets (including receivables and inventories), liabilities, capital, income, and expenses — the account categories that are reported on an organisation's balance sheet and income statement, respectively. He demonstrated year-end closing entries and proposed that a trial balance be used to prove a balanced ledger. His treatise also touches on a wide range of related topics from accounting ethics to cost accounting.

by: wikipedia