The Birth of Modern Accounting and Finance

If a manor kept records, single-entry accounting would have been the natural method. A manor could keep a written checklist of expected receipts from its peasants and serfs for control purposes. While that was somewhat analogous to recording an account receivable and its subsequent collection or otherwise, it did not involve a dual or double entry. Notably, there was no need for a contra account such as sales revenue to be credited at the time of booking the receivable: There was no exchange to record.

Toward the end of the Middle Ages, this all began to change. Markets for goods resurged in a remarkable expansion and renaissance, with northern Italian merchants at the forefront. The Crusades led to substantially increased trade with the East. There was no widely accepted currency so the geographic expansion of goods markets was accompanied by growth in capital markets, in the form of money changers. Genoa and Venice rose as maritime powers that facilitated trade and finance throughout the region. Feudalism declined, and there was a corresponding widespread movement of the population from manors to cities.

Many other places in Europe also experienced growth in market trading toward the end of this depressed period, so why did double-entry accounting emerge in northern Italy specifically? A partial explanation is provided by the late Raymond de Roover, whose 1956 study of the history of accounting explained that the method emerged concurrently with merchants in the region employing superior business practices generally. But that is only part of the story.

As reported by University of Aberdeen’s Alan Sangster, as early as 1494 it was clear that a foundation of the double-entry method was that exchanges are two-sided. To my knowledge, no previous commentator has drawn from this fact the conclusion that double-entry accounting is the natural method of recording market transactions. If two parties participate in a voluntary market transaction, a complete record of the transaction for each party involves accounting for both sides of the exchange: what was received and what was given up.

Double-entry accounting is not the natural method to use in command economies such as manorial systems, and this helps to explain why the method emerged when and where it did—after the manorial system had begun its demise, goods and financial markets had expanded substantially, and a substantial and well-managed merchant class had arisen. It is worth noting that Japan experienced a similar scenario five or six centuries later than northern Italy when it emerged from its feudal system.

Markets of various types and sizes have existed in civilizations for millennia. Economic institutions do not arrive as a deus ex machina. Markets and complementary institutions such as accounting and commercial law reduce frictions, but do not eliminate them. Consequently, these institutions do not change fluidly.

Double entry did not emerge until the merchants and money changers/bankers in northern Italy had achieved a sufficient volume of transactions to require and support the cost of a sophisticated accounting system. The method awaited the advent of active markets and a class of merchants and moneymen operating at sufficient scale to make sophisticated recordkeeping worthwhile.

Much of the diffusion of knowledge about double entry in the 16th century is attributed by de Roover, as well as California Institute of Advanced Management’s Geofrey T. Mills in a 1994 paper, to the advent of movable-type printing. This is what made available the famous first text about double-entry accounting, by Luca Pacioli in 1494, along with a variety of subsequent related texts. Presumably, word of mouth also played at least some part in knowledge of the method spreading, but evidence of this is scant. The internationalization of markets undoubtedly spread knowledge of the method as well. For example, double entry did not arrive in England until the 15th century, when it was employed in the accounts for the year 1436 of an Italian merchant residing in London.

Double entry has survived for centuries as the dominant basis of accounting because markets have survived as important social and economic institutions. If markets had collapsed in the interim due to destructive forces such as cataclysmic events, wars, or plagues, and if economic activity had returned to a feudal or other command system as in the Middle Ages, single-entry accounting might have returned.

Other institutions that increase the efficiency of transacting in markets, especially commercial/mercantile law, likely coevolved around the same time. In 13th-century Florence, the practice emerged of using a banker’s accounting records as legal documentation of a transaction. These and other developments helped to move transactions from the restricted environment of the feudal system into the marketplace, thereby reaping gains from trade and enhancing aggregate welfare.

To the philosophers of the Scottish Enlightenment, we owe the insight of order emerging spontaneously in social and economic institutions, including accounting—in the immortal words of Adam Ferguson, printed in his 1767 essay on civil society, as the “result of human action, but not the execution of any human design.” No one invented double-entry accounting; ultimately, markets were responsible for its emergence. In the words of the late Ananias Charles Littleton, which ring true almost a century later, “Accounting owes more to the evolutionary forces of society than to particular genius.”

Arm in arm with markets, double-entry accounting has created aggregate wealth and remains a dominant tool today. Its contributions should be recognized, especially in the modern era, where accounting will be crucial to the next evolution of finance.

This essay is adapted from the article “Markets and the Spontaneous Emergence of Double-Entry Accounting: A Short Essay,” which originally appeared in the June 2025 issue of Accounting Horizons and is reprinted with permission.