c. 3300 BCEWriting is invented for accounting
Proto-cuneiform tablets from Uruk record rations, grain and livestock in standardized signs — receipts and inventories, not stories. The scribes who kept them were a trained, examined elite, and their tablets are the oldest documents human beings can still read.
1130The English Exchequer's pipe rolls
The earliest surviving pipe roll — the English crown's annual account of royal revenue, audited at a table covered with a chequered cloth that gave the Exchequer its name — dates from 1130, under Henry I. The series then runs almost unbroken until 1832, the longest continuous set of public accounts in existence.
1299The oldest surviving double-entry books
The ledger of Giovanni Farolfi & Company, Florentine merchants trading in Salon, Provence, kept by branch manager Amatino Manucci for 1299–1300, is the earliest surviving complete double-entry system — every debit matched by a credit, two centuries before the method reached print.
1494Pacioli prints the method of Venice
In Venice, Franciscan friar and mathematician Luca Pacioli publishes his Summa de arithmetica, whose 27-page bookkeeping treatise is the first printed description of double entry — journal, ledger, trial balance and all. He invented none of it, and said so; the printing press did the rest.
1854The chartered accountant is born
Queen Victoria grants a royal charter to the Society of Accountants in Edinburgh, with Glasgow's institute following the same year — the first professional accounting bodies of the modern type, whose members alone could call themselves "chartered accountants." England and Wales followed with the ICAEW's charter in 1880.
1896New York creates the CPA
New York State passes the first law establishing the title "certified public accountant," awarded by examination. Other states copy it over the following decades, and in 1899 Christine Ross of New York becomes the first woman to earn the credential.
1933The audit becomes law
After the 1929 crash, the US Securities Act of 1933 and Exchange Act of 1934 require listed companies to file financial statements audited by independent accountants, policed by the new Securities and Exchange Commission. The audit stops being a service some shareholders buy and becomes a legal institution.
1979VisiCalc puts the ledger on a screen
Dan Bricklin, a Harvard MBA student watching a professor correct a blackboard of figures cell by cell, builds the first electronic spreadsheet with programmer Bob Frankston. VisiCalc becomes the Apple II's killer application and recalculates in seconds what took a clerk all night.
2002Enron destroys Arthur Andersen
Enron's December 2001 collapse takes down its auditor: Arthur Andersen, one of the Big Five, is convicted of obstruction in 2002 (overturned in 2005, too late) and surrenders its licenses, costing tens of thousands of jobs. Congress answers with the Sarbanes-Oxley Act, creating the PCAOB and ending the profession's self-regulation in the US.
2005IFRS becomes the world's ledger language
The European Union requires its listed companies — roughly 7,000 of them — to report under International Financial Reporting Standards. Today more than 140 jurisdictions require or permit IFRS, the closest thing business has ever had to a single global language of accounts.