What Is GAAP in Accounting? A Guide to GAAP Principles and Standards

GAAP stands for Generally Accepted Accounting Principles. GAAP is the set of accounting standards, rules, and procedures that US businesses use to prepare and present their financial statements in a consistent, transparent, and comparable way.

Without GAAP standards, financial statements from different companies would be prepared using different rules, making it nearly impossible for investors, lenders, or regulators to compare or rely on them.

This guide explains what GAAP is in accounting, what the GAAP principles are, how GAAP standards are applied in practice, and how GAAP compares to non-GAAP and international reporting frameworks.

In this blog, you’ll learn:

• What GAAP stands for in accounting, the GAAP definition, and why it is the standard for US financial reporting.
• The 10 core GAAP accounting principles and what each one requires businesses to do when preparing financial statements.
• Who sets GAAP standards, who must follow them, and what happens when a business does not comply.
• How GAAP vs non-GAAP reporting works and why companies often report both figures to investors.
• How GAAP compares to IFRS (International Financial Reporting Standards) and what that means for global businesses.

GAAP Accounting: Key Facts and Benchmarks

Fact	Detail	Source
What GAAP stands for	Generally Accepted Accounting Principles	FASB / SEC
Primary standard-setter for GAAP in the US	Financial Accounting Standards Board (FASB)	SEC designation (1973)
Who must follow GAAP	All US publicly traded companies; required by SEC	Securities Exchange Act
Number of active FASB accounting standards codified	Over 800 topics in the FASB Codification	FASB ASC
Countries using GAAP vs IFRS	US primarily uses GAAP; 140+ countries use IFRS	IFRS Foundation
Year FASB was established	1973	FASB History
GAAP non-compliance penalty	SEC enforcement, restatements, investor lawsuits	SEC Enforcement Actions
Percentage of S&P 500 companies reporting non-GAAP metrics	Over 90%	Audit Analytics 2023

What Is GAAP? GAAP Definition and What It Stands For in Accounting

GAAP stands for Generally Accepted Accounting Principles. The GAAP definition refers to the collection of commonly followed accounting rules, standards, and procedures used to compile financial statements in the United States.

What is GAAP in accounting?

It is the framework that governs how transactions are recorded, how revenue is recognized, how expenses are matched to the periods they relate to, and how financial statements are presented and disclosed.

GAAP is not a single document or law. It is a body of standards developed primarily by the Financial Accounting Standards Board (FASB), organized in the FASB Accounting Standards Codification (ASC), and recognized by the SEC as the authoritative source of accounting standards for public companies in the United States.

According to the SEC, all companies listed on US stock exchanges are required to prepare financial statements in accordance with GAAP. Private companies are not legally required to follow GAAP, but lenders, investors, and acquirers almost universally expect GAAP-compliant financial statements when evaluating a business.

GAAP Stands For: A Quick Reference

GAAP = Generally Accepted Accounting Principles

• Generally: widely recognized and accepted across the US financial reporting community, not specific to one industry or company type.
• Accepted: formally adopted and enforced by the SEC, FASB, and PCAOB as the authoritative standard for US financial reporting.
• Accounting: specifically governing how financial transactions are recorded, classified, and summarized in financial statements.
• Principles: a set of rules, guidelines, and concepts that establish consistent standards across all entities that adopt them.

Who Sets GAAP Standards?

GAAP standards in the United States are set primarily by the Financial Accounting Standards Board (FASB), a private nonprofit organization designated by the SEC as the authoritative standard-setter for public company accounting.

The FASB issues Accounting Standards Updates (ASUs) that are incorporated into the FASB Accounting Standards Codification (ASC), which is the single authoritative source of US GAAP.

Other bodies contribute to GAAP standards in specific contexts. The Governmental Accounting Standards Board (GASB) sets GAAP for state and local governments. The PCAOB (Public Company Accounting Oversight Board) sets auditing standards for public company auditors.

What Are the GAAP Accounting Principles? The 10 Core Principles Explained

GAAP accounting principles are the foundational concepts that govern how financial information is recorded, measured, and reported. These principles ensure that financial statements are consistent, comparable, and reliable across all entities that follow them.

According to the FASB, these principles form the conceptual framework underlying all specific GAAP standards. Every accounting standard issued by the FASB is grounded in one or more of these core principles.

GAAP Principle	What It Requires	Practical Example
Revenue Recognition	Record revenue when it is earned, not when cash is received	A contractor records revenue when the project is completed, not when the client pays
Expense Matching	Match expenses to the revenue they help generate in the same period	Record the cost of goods sold in the same period as the related sale
Cost Principle	Record assets at their original purchase cost, not current market value	Equipment purchased for $50,000 stays on the books at $50,000 less depreciation
Full Disclosure	Disclose all information material to a financial statement user’s decision	Pending lawsuits, related-party transactions, and accounting method changes must be disclosed
Consistency	Use the same accounting methods from period to period	If straight-line depreciation is used one year, use it the following year too
Materiality	Only require strict compliance for items that would influence financial decisions	Rounding small expenses does not violate GAAP if the amounts are immaterial
Conservatism	When in doubt, choose the option that understates assets or income	Record a potential loss as soon as it is probable; do not record a potential gain until realized
Going Concern	Assume the business will continue operating indefinitely unless evidence suggests otherwise	Assets are valued based on continued use, not liquidation value
Economic Entity	Keep the business’s finances completely separate from the owner’s personal finances	Personal expenses paid from a business account must be reclassified
Time Period	Report financial results in defined, consistent time periods	Quarterly and annual reporting periods enable meaningful comparisons over time

Who Must Follow GAAP Standards and What Happens If They Do Not?

All US publicly traded companies are legally required to follow GAAP standards as a condition of their SEC registration and stock exchange listing.

The SEC enforces GAAP compliance for public companies through its reporting requirements. Companies that file 10-Ks, 10-Qs, and other SEC reports must prepare those reports in accordance with generally accepted accounting principles (GAAP).

Private companies are not legally mandated to follow GAAP, but they frequently do because lenders, investors, and private equity firms typically require GAAP-compliant financial statements before making credit or investment decisions.

According to the AICPA, most commercial lenders require GAAP-compliant financial statements for loan applications above a certain threshold, typically $1 million or more.

Which Entities Are Required to Follow GAAP

• Publicly traded companies: all companies listed on US stock exchanges are required by SEC rules to file GAAP-compliant financial statements.
• Banks and financial institutions: regulated by federal banking authorities that require GAAP reporting for safety and soundness examinations.
• Nonprofit organizations: must follow GAAP standards specific to nonprofits (ASC 958) when preparing financial statements.
• Government contractors: many federal contracts require GAAP-compliant accounting as a condition of contract award.
• Private companies seeking financing or investment: while not legally required, GAAP compliance is expected by most institutional lenders and private equity investors.

Consequences of GAAP Non-Compliance

• SEC enforcement actions: the SEC can issue cease-and-desist orders, assess civil penalties, and require financial statement restatements for public companies that violate GAAP standards.
• Financial statement restatements: when a GAAP error is discovered, prior-period financial statements must be restated and refiled, which damages investor confidence and can trigger shareholder litigation.
• Loan covenant violations: many commercial loan agreements require GAAP-compliant reporting. A GAAP violation can trigger a technical default on a loan covenant.
• Loss of investor trust: GAAP violations signal unreliable reporting. Even corrected errors raise questions about the quality of a company’s financial controls and management integrity.
• Audit qualification: auditors may issue a qualified or adverse opinion on financial statements that materially depart from GAAP standards, which is a serious red flag for investors and lenders alike.

GAAP vs Non-GAAP: What Is the Difference and Why Does It Matter?

GAAP vs non-GAAP is one of the most discussed topics in financial reporting because companies frequently report both types of metrics to investors.

GAAP metrics follow the strict rules of generally accepted accounting principles. Non-GAAP metrics are adjusted figures that exclude certain items management believes do not reflect the company’s ongoing operational performance.

Common non-GAAP adjustments include excluding stock-based compensation, restructuring charges, acquisition-related costs, amortization of intangible assets, and one-time legal settlements.

According to Audit Analytics, over 90% of S&P 500 companies report at least one non-GAAP metric alongside their GAAP financial statements.

GAAP vs Non-GAAP: Comparison Table

Factor	GAAP Reporting	Non-GAAP Reporting
Governed by	FASB standards (mandatory for public companies)	Company management’s own definitions
Comparability	High, consistent across all companies	Low, each company defines its own adjustments
Regulatory requirement	Required for SEC filings	Voluntary, supplemental disclosure only
Common metrics	Net income, EPS, revenue, operating income	Adjusted EBITDA, adjusted EPS, free cash flow
Items excluded	Nothing, all must be included per GAAP rules	Stock comp, restructuring, M&A costs, amortization
Investor use	Used for compliance, audit, and legal purposes	Used by management to present operational performance
Risk of manipulation	Low, governed by strict standards	Higher, without standardized definitions
SEC stance	Required and enforced	Permitted but must be clearly reconciled to GAAP

The SEC requires companies that report non-GAAP metrics to provide a clear reconciliation showing how the non-GAAP figure relates to the nearest GAAP equivalent. This requirement is designed to prevent non-GAAP reporting from misleading investors.

For investors and analysts, the GAAP vs non-GAAP comparison is a critical lens. A company with strong non-GAAP earnings but weak GAAP earnings warrants careful scrutiny of what is being excluded and why.

What Is the Difference Between GAAP and IFRS?

GAAP is the accounting standard used in the United States. IFRS (International Financial Reporting Standards) is the accounting framework used in over 140 countries, including the European Union, Canada, Australia, and most of Asia.

Both GAAP and IFRS aim to produce transparent, reliable financial statements, but they differ in several important ways that affect how transactions are reported.

According to the IFRS Foundation, the ongoing convergence project between the FASB and IASB has reduced many historical differences, but significant gaps remain in areas such as inventory valuation, lease accounting, and revenue recognition nuances.

Factor	GAAP	IFRS
Primary jurisdiction	United States	140+ countries globally
Standard-setting body	FASB (Financial Accounting Standards Board)	IASB (International Accounting Standards Board)
Rules vs principles	More rules-based with specific guidance	More principles-based with greater judgment
Inventory valuation	LIFO permitted	LIFO not permitted
Development costs	Expensed as incurred	Capitalized under certain conditions
Revaluation of assets	Not permitted (cost model only)	Permitted to fair value
Revenue recognition	ASC 606 (largely converged with IFRS 15)	IFRS 15 (largely converged with ASC 606)
Lease accounting	ASC 842	IFRS 16 (similar but some differences)
Goodwill impairment	Annual impairment test	Annual impairment test (similar approach)
Financial statement presentation	More prescriptive format requirements	More flexible format

Which Should Your Business Use?

If your business operates solely in the United States, GAAP accounting is the appropriate standard.

If your business has international operations, is listed on a foreign stock exchange, or is considering a merger or acquisition involving an IFRS-reporting entity, understanding both frameworks is important.

Some large multinational companies prepare two sets of financial statements: one under GAAP for US reporting and one under IFRS for international reporting. This dual reporting adds complexity and cost but is sometimes unavoidable for globally operating businesses.

How Are GAAP Accounting Principles Applied in Practice?

GAAP accounting principles are applied through the policies and procedures a business uses to record transactions, recognize revenue, value assets, and prepare financial statements.

Applying GAAP in practice means making consistent accounting policy choices, applying them uniformly across periods, and disclosing them clearly in the notes to the financial statements.

According to PwC’s GAAP Guide, the most common areas where businesses encounter GAAP application challenges are revenue recognition (ASC 606), lease accounting (ASC 842), business combinations (ASC 805), and financial instruments (ASC 820 and 825).

Common GAAP Standards Every Business Should Know

• ASC 606 (Revenue Recognition): defines a five-step model for recognizing revenue from customer contracts. It replaced over 100 industry-specific revenue guidance pieces with a single standard.
• ASC 842 (Leases): requires businesses to recognize most operating leases on the balance sheet as right-of-use assets and lease liabilities, a significant change from prior off-balance-sheet treatment.
• ASC 350 (Intangibles and Goodwill): governs how goodwill and other intangible assets are recorded and tested for impairment following a business acquisition.
• ASC 740 (Income Taxes): covers the recognition of current and deferred tax assets and liabilities, including the treatment of temporary differences between GAAP income and taxable income.
• ASC 230 (Cash Flow Statements): defines how cash flows from operating, investing, and financing activities are classified and presented.
• ASC 210 and 220 (Balance Sheet and Comprehensive Income): govern how assets, liabilities, equity, and comprehensive income items are classified and presented in the financial statements.

GAAP Compliance in Practice: Key Steps

• Establish a GAAP-compliant chart of accounts: organize accounts by type (assets, liabilities, equity, revenue, expenses) following GAAP classification requirements.
• Choose and document accounting policies: select accounting methods (depreciation method, inventory valuation, revenue recognition approach) that comply with GAAP and document them formally.
• Apply the accrual basis of accounting: GAAP requires accrual accounting. Revenue must be recognized when earned and expenses when incurred, not when cash changes hands.
• Perform period-end close procedures: record adjusting entries for accrued expenses, prepaid amortization, deferred revenue, and depreciation at each period end.
• Prepare GAAP-compliant financial statements: produce the income statement, balance sheet, statement of cash flows, and statement of changes in equity, with full disclosures in the notes.
• Engage a CPA for review or audit: for businesses requiring external assurance, a licensed CPA must perform a review or audit of the financial statements to verify GAAP compliance.

Common GAAP Compliance Mistakes Businesses Make

GAAP errors are more common than most business owners expect, particularly during periods of growth or transition.

• Using cash basis accounting when GAAP requires accrual: GAAP requires accrual basis accounting for all entities that issue GAAP financial statements. Businesses that maintain cash basis books cannot produce GAAP-compliant statements without conversion.
• Misapplying the revenue recognition standard (ASC 606): recognizing revenue too early (before performance obligations are satisfied) or too late (after they are satisfied) is one of the most frequent GAAP errors and a common trigger for SEC enforcement actions.
• Omitting required disclosures: GAAP requires extensive footnote disclosures covering accounting policies, related-party transactions, debt covenants, contingencies, and significant estimates. Missing disclosures constitute a GAAP violation even if the financial statement numbers are correct.
• Failing to capitalize operating leases (ASC 842): since ASC 842 became effective, businesses must recognize right-of-use assets and lease liabilities for most operating leases. Many smaller businesses still treat these as off-balance-sheet items, which is no longer permitted under GAAP.
• Inconsistent application of accounting policies: GAAP requires consistency from period to period. Switching depreciation methods, inventory valuation methods, or revenue recognition approaches without proper disclosure violates the consistency principle.
• Confusing GAAP income with taxable income: GAAP income and taxable income are calculated under different rules and will almost always differ. The difference creates deferred tax assets or liabilities that must be recognized under ASC 740.

FAQs about GAAP Accounting

What does GAAP stand for in accounting?

GAAP stands for Generally Accepted Accounting Principles.

GAAP is the set of accounting standards, rules, and procedures used in the United States to prepare and present financial statements. GAAP stands for a framework that ensures financial reporting is consistent, transparent, and comparable across all entities that follow it.

What is GAAP in accounting?

GAAP in accounting is the body of rules and standards that governs how US businesses record transactions, recognize revenue, value assets, and present financial statements.

GAAP is established primarily by the Financial Accounting Standards Board (FASB) and is recognized by the SEC as the authoritative standard for public company reporting. The GAAP definition encompasses both the specific standards in the FASB Codification and the underlying principles that guide their application.

What are generally accepted accounting principles?

Generally accepted accounting principles (GAAP) are the standardized set of accounting rules and guidelines that US businesses use to prepare financial statements.

The core GAAP accounting principles include revenue recognition, expense matching, the cost principle, full disclosure, consistency, materiality, conservatism, going concern, economic entity, and the time period principle. Together, these principles ensure that financial statements give a true and fair view of a business’s financial position and performance.

Who must follow GAAP standards?

All US publicly traded companies are legally required by the SEC to follow GAAP standards.

Private companies are not legally required to follow GAAP but often do because lenders, investors, and acquirers require GAAP-compliant financial statements. Nonprofits, banks, and government contractors are also subject to GAAP requirements in most cases.

What is the GAAP definition?

The GAAP definition is: the set of accounting standards, principles, and procedures established by the FASB and recognized by the SEC as the authoritative framework for financial reporting in the United States.

GAAP governs how transactions are recorded, how revenue and expenses are recognized, how assets and liabilities are measured, and how financial statements are presented and disclosed.

What is the difference between GAAP vs non-GAAP?

GAAP metrics are calculated according to the strict rules of generally accepted accounting principles and are required for all SEC filings. Non-GAAP metrics are adjusted figures that exclude items management considers non-recurring or non-operational.

Common non-GAAP adjustments include excluding stock-based compensation, restructuring charges, and acquisition costs. The SEC requires companies to reconcile non-GAAP figures to the nearest GAAP equivalent. Over 90% of S&P 500 companies report both GAAP and non-GAAP metrics.

What is GAAP vs IFRS?

GAAP is the accounting standard used in the United States, set by the FASB. IFRS (International Financial Reporting Standards) is the accounting framework used in over 140 countries, set by the International Accounting Standards Board (IASB).

Key differences include GAAP permitting LIFO inventory valuation (IFRS does not), IFRS allowing asset revaluation to fair value (GAAP does not), and IFRS being more principles-based while GAAP is more rules-based with specific guidance.

What are GAAP accounting principles used for?

GAAP accounting principles are used to ensure that financial statements are prepared consistently, transparently, and comparably across all entities that follow them.

They provide the framework for revenue recognition, expense matching, asset valuation, and financial statement presentation. Investors, lenders, regulators, and auditors all rely on GAAP accounting principles to assess a business’s true financial position and performance.

Does a small business need to follow GAAP?

Small businesses are not legally required to follow GAAP unless they are publicly traded or contractually obligated to provide GAAP financial statements.

However, any small business that seeks bank financing, has outside investors, or is preparing for an acquisition will almost certainly be asked to provide GAAP-compliant financial statements. Adopting GAAP accounting from the start is significantly easier than converting historical records later.

How do GAAP standards get updated?

GAAP standards are updated by the FASB through a process called Accounting Standards Updates (ASUs).

The FASB identifies emerging accounting issues, publishes exposure drafts for public comment, considers stakeholder feedback, and then issues final standards that are incorporated into the FASB Accounting Standards Codification (ASC). Major recent updates include ASC 606 (revenue recognition) and ASC 842 (leases).

Final Thoughts

GAAP is the financial language that makes US business reporting credible, comparable, and trustworthy. Whether you are preparing for an audit, applying for financing, or simply trying to understand your own financial statements, knowing what GAAP stands for and how GAAP accounting principles apply to your business is foundational knowledge.

Investors, lenders, and regulators do not just want to know what your numbers are. They want to know that those numbers were produced using a consistent, rigorous, and recognized set of standards.

At Expertise Accelerated, our accounting teams prepare GAAP-compliant financial statements, manage period-end close processes, and ensure that every client’s books meet the standards that lenders, investors, and auditors require.

Schedule a free consultation with Expertise Accelerated to review your financial reporting and find out whether your current accounting practices meet GAAP standards.