The history of GAAP begins with the 1929 crash and a single administrative decision in 1938: the Securities and Exchange Commission would let the private sector write America’s accounting rules, and the government would back those rules with the force of federal securities law. That arrangement has survived three different standard-setting bodies, a major fraud wave, and an attempt at global convergence. The rules themselves have changed constantly; the structure that produces them has not.
Why There Were No Standards Before 1933
Before the 1930s, no authoritative body told American companies how to prepare financial statements. Each company picked whichever methods suited its goals. Two firms in the same industry could report dramatically different income figures for identical activity, and outside investors had no reliable way to compare them.
The 1929 crash and the Depression that followed exposed how dangerous this was. Corporate statements had hidden deteriorating conditions behind opaque reporting, investors lost fortunes relying on numbers that turned out to be meaningless, and public confidence in the markets collapsed.
The SEC’s 1938 Delegation to the Private Sector
Congress responded with two laws. The Securities Act of 1933 required accurate financial information from companies offering securities to the public. The Securities Exchange Act of 1934 created the SEC to police the markets on an ongoing basis.1Securities and Exchange Commission. Statutes and Regulations
The SEC had the legal authority to write detailed accounting rules itself. It chose not to. In April 1938, the Commission issued Accounting Series Release No. 4, which established that financial statements prepared using principles lacking “substantial authoritative support” would be presumed misleading. That short release created the framework still operating today. The private sector would develop accounting standards, and the SEC would accept those standards as long as they met its threshold, while reserving the right to override or supplement them at any time.
The Committee on Accounting Procedure (1939–1959)
The delegation prompted the American Institute of Accountants, predecessor of today’s AICPA, to reorganize and expand its Committee on Accounting Procedure in 1939, growing it to roughly two dozen members. The CAP became the first formal private-sector body responsible for developing authoritative accounting guidance.2Securities and Exchange Commission Historical Society. The Richard C. Adkerson Gallery on the SEC Role in Accounting Standards Setting
The CAP worked through Accounting Research Bulletins. It issued 51 of them over two decades, and several survive in modified form within current GAAP. But every member was a part-time volunteer with a full-time job elsewhere. That left the committee with limited research capacity, potential conflicts of interest, and a habit of tackling problems one at a time as they flared up. The result was a patchwork of rules that sometimes contradicted each other. The CAP never stepped back to define what financial statements were fundamentally supposed to accomplish. By the late 1950s, the growing complexity of the economy had outstripped it.
The Accounting Principles Board (1959–1973)
The AICPA dissolved the CAP in 1959 and replaced it with the Accounting Principles Board. The APB was larger, its official pronouncements (APB Opinions) were intended to be binding on all AICPA members, and it commissioned Accounting Research Studies to lay analytical groundwork before issuing Opinions.
In practice, the APB inherited the same structural weakness. Members were still part-time volunteers with day jobs at accounting firms, corporations, and universities. Reaching consensus proved difficult, and the process often stalled on politically sensitive topics.
The Investment Tax Credit Collapse
The dispute that most damaged the APB’s credibility involved the investment tax credit created by the Revenue Act of 1962. The credit gave companies a tax reduction based on the cost of certain new business assets. The accounting question: should the savings hit the income statement all at once, or be spread over the asset’s useful life?3Financial Accounting Standards Board. APB 2 – Accounting for the Investment Credit
APB Opinion No. 2 concluded that spreading the benefit over time (the deferral method) best reflected the economic substance of the credit, since earnings come from using equipment, not buying it. The board hedged by also calling immediate recognition “acceptable.” Intense pressure followed, with many companies and even the Kennedy administration favoring immediate recognition because it made earnings look stronger.
The SEC then issued Accounting Series Release No. 96 in January 1963, accepting both methods and effectively overruling the APB’s attempt to narrow the options. A volunteer board under the AICPA’s umbrella could not withstand political pressure on controversial topics. The APB limped along for another decade, but its authority was broken.
The Wheat Committee
By 1971, the AICPA acknowledged the problem. Its president appointed a seven-member study group chaired by Francis M. Wheat, a former SEC Commissioner, to evaluate the failures and recommend a path forward.4Securities and Exchange Commission Historical Society. Establishing Financial Accounting Standards
The committee’s diagnosis was blunt: part-time volunteers with competing professional loyalties could not produce authoritative standards fast enough or independently enough for an economy as large and complex as America’s. It recommended a fully independent, full-time board with dedicated funding and no organizational ties to the AICPA or any other professional body.
The Financial Accounting Standards Board (1973–Present)
The FASB began operations in 1973, implementing virtually all of the Wheat Committee’s recommendations. Board members serve full-time and must sever professional ties with their previous employers, eliminating the conflict-of-interest problem that had plagued the CAP and the APB.5Financial Accounting Standards Board. About the FASB
The FASB sits within a governance structure built to balance independence with accountability. The Financial Accounting Foundation, an independent nonprofit established in 1972, oversees the FASB, appoints its seven members, and secures funding.6Financial Accounting Foundation. About the FAF The Financial Accounting Standards Advisory Council provides technical advice and brings in the perspectives of investors, preparers, and auditors.
The Conceptual Framework
One of the FASB’s most consequential early initiatives had no precedent at the CAP or APB: developing a Conceptual Framework. Starting in the late 1970s, the FASB issued a series of Statements of Financial Accounting Concepts defining the objectives of financial reporting, the qualitative characteristics that make information useful, and the elements of financial statements like assets, liabilities, and equity.
The framework was not a set of rules for specific transactions. It gave the board a principled starting point when facing new accounting questions, instead of forcing ad hoc solutions. That shift from case-by-case rulemaking to principled derivation most distinguished the FASB era from everything before.
Sarbanes-Oxley and the FASB’s Statutory Footing
The early 2000s brought the most severe test of the U.S. financial reporting system since the Depression. Accounting frauds at Enron, WorldCom, and other major corporations destroyed billions in investor wealth and revealed that existing oversight had failed. Congress responded with the Sarbanes-Oxley Act of 2002, the most significant securities legislation in nearly seventy years.7Public Company Accounting Oversight Board. Sarbanes-Oxley Act of 2002
Sarbanes-Oxley imposed mandatory internal control assessments, CEO and CFO certifications of financial statements, and strict auditor independence rules. It also created the Public Company Accounting Oversight Board to inspect and regulate audit firms, a function the profession had previously handled through self-regulation.
For GAAP’s history specifically, Sarbanes-Oxley did two things. It codified the SEC’s authority to recognize a private-sector standard setter and set explicit criteria that body had to meet, giving the FASB a statutory foundation it had previously lacked. In 2003, the SEC formally reaffirmed the FASB’s status under those criteria, confirming that public companies must comply with FASB standards when filing with the SEC unless the Commission directs otherwise.8Federal Register. Commission Statement of Policy Reaffirming the Status of the FASB as a Designated Private-Sector Standard Setter It also raised the consequences for non-compliance, making the rigor of accounting standards carry higher stakes than before.
The 2009 Codification
By the mid-2000s, GAAP had become hard to navigate. Decades of pronouncements from the CAP, the APB, the FASB, and various other bodies had created thousands of pages of overlapping guidance spread across multiple document series. Finding the correct standard for a specific transaction sometimes meant searching through ARBs, APB Opinions, FASB Statements, Interpretations, Technical Bulletins, and Emerging Issues Task Force abstracts.
The FASB fixed this by creating the Accounting Standards Codification, which became the single authoritative source of nongovernmental U.S. GAAP on July 1, 2009. The Codification reorganized every existing standard into a single, topically arranged framework. Revenue recognition, for example, now sits under ASC Topic 606 regardless of which historical pronouncement originally established the rule.9Financial Accounting Standards Board. ASU 2016-10 – Revenue from Contracts with Customers (Topic 606)
Since 2009, the FASB changes GAAP only through Accounting Standards Updates that amend the Codification. The old system of numbered Statements is gone. Accountants no longer trace the genealogy of a standard through forty years of documents to confirm it still applies.
The Attempt at Global Convergence
While the Codification simplified how people find U.S. standards, a parallel effort attempted something more ambitious: merging U.S. GAAP with International Financial Reporting Standards used by most of the rest of the world. Starting in the early 2000s, the FASB and the International Accounting Standards Board worked jointly on major topics, including revenue recognition and lease accounting.
Those projects produced real results. ASC Topic 606 on revenue recognition and ASC Topic 842 on leases both emerged from the convergence process and fundamentally changed how U.S. companies account for those transactions. The lease standard required companies to bring most leases onto their balance sheets for the first time, ending decades of off-balance-sheet treatment.
Full convergence never happened. The SEC commissioned a staff study to evaluate whether U.S. companies should adopt IFRS entirely. The staff’s 2012 report found that wholesale adoption lacked support from most participants in U.S. capital markets. The report explored alternatives like an endorsement mechanism, but the SEC never issued a final decision mandating a switch. The FASB continues to coordinate with international standard-setters, but U.S. GAAP and IFRS remain separate systems with significant differences.
Scope Beyond Public Companies
The history of GAAP is often told through the lens of publicly traded companies, but the framework has expanded. Private companies follow GAAP when their lenders, investors, or other stakeholders require it. Because standards designed for massive public corporations can impose disproportionate costs on smaller businesses, the FASB established the Private Company Council in 2012 to advise it on where private companies need different treatment. Private companies can, for example, elect to amortize goodwill over a set period rather than testing it annually for impairment.10Financial Accounting Standards Board. Private Company Council11Financial Accounting Standards Board. FASB Issues Accounting Alternative for Private Companies on Identifiable Intangible Assets
State and local governments operate under a separate system. The Governmental Accounting Standards Board, established in 1984 under the same FAF umbrella that oversees the FASB, sets GAAP for government entities. Governmental accounting differs fundamentally from corporate accounting because governments are accountable for how they use taxpayer funds rather than for generating profits.12Governmental Accounting Standards Board. About the GASB
Where GAAP Stands Now
The FASB remains active, issuing a steady stream of Accounting Standards Updates that refine and expand the Codification on topics ranging from expense disaggregation in income statements to hedge accounting and the treatment of government grants.13Financial Accounting Standards Board. Accounting Standards Updates Issued
The underlying architecture has proven durable. The partnership established in 1938, with the SEC holding ultimate authority but delegating technical work to an independent private-sector board, has survived every crisis and institutional transition since. The standard-setting bodies have changed three times, the scope of GAAP has widened to cover private companies and specialized industries, and enforcement has grown harsher. The underlying premise is what it was after the crash: investors deserve financial statements they can trust, and someone has to write the rules that make that possible.