GAAPの理解
Detailed explanation of GAAPの理解 based on official information from 各州州務長官事務所・IRS. Work Visa Applications
Published: January 12, 2026
GAAP: Generally Accepted Accounting Principles in U.S. Business Formation
1. Overview
Generally Accepted Accounting Principles (GAAP) are a standardized set of accounting rules, standards, and procedures established by the Financial Accounting Standards Board (FASB) for companies in the United States. While not directly a part of the legal business formation process, GAAP compliance is critically important for financial reporting, securing financing, attracting investors, and maintaining regulatory compliance. For new businesses, understanding GAAP early helps establish proper accounting systems, ensures accurate financial statements, and builds credibility with stakeholders. GAAP provides consistency, comparability, and transparency in financial reporting, which is essential for making informed economic decisions.
2. Applicable Objects & Scenarios
GAAP applies primarily to:
- Publicly Traded Companies: Required by the U.S. Securities and Exchange Commission (SEC) to file GAAP-compliant financial statements.
- Private Companies Seeking Financing: Banks, venture capitalists, and other lenders/investors typically require GAAP-compliant financials.
- Non-Profit Organizations & Government Entities: Often follow modified versions or specific frameworks (like FASB for non-profits), but the core principles of accrual accounting and full disclosure are similar.
- Any Business Requiring Audited Financial Statements: Audits are conducted in accordance with GAAP.
It is needed when preparing:
- Annual financial statements (Balance Sheet, Income Statement, Cash Flow Statement).
- Reports for tax purposes (though tax accounting rules differ).
- Documentation for loan applications or investment pitches.
- Any official reporting to regulatory bodies.
3. Core Conclusions
- Foundation for Credibility: Adopting GAAP from inception establishes financial discipline and trust with external parties.
- Not Legally Mandatory for All: While not a state formation requirement, it becomes a practical necessity for growth, funding, and audits.
- Accrual Basis is Key: GAAP requires the accrual basis of accounting (recognizing revenue when earned and expenses when incurred), not the cash basis.
- Requires Professional Judgment: Implementing GAAP often requires consultation with accounting professionals or CPAs.
- Dynamic Framework: GAAP is updated periodically by the FASB; businesses must stay informed of relevant changes.
4. Procedures & Steps
Implementing GAAP is an ongoing accounting practice, not a one-time registration. For a new business, the steps involve:
Step 1: Preparation & System Setup
- Educate Yourself: Understand the basic principles of GAAP (revenue recognition, matching principle, full disclosure, etc.).
- Choose an Accounting Method: Select the accrual basis of accounting over the cash basis to align with GAAP.
- Set Up a Chart of Accounts: Structure your accounts (assets, liabilities, equity, revenue, expenses) in a way that facilitates GAAP reporting.
- Select Accounting Software: Choose robust software that supports accrual accounting and can generate GAAP-compliant financial statements.
- Consider Professional Help: Engage a certified public accountant (CPA) to advise on setup and complex areas like inventory or depreciation.
Step 2: Application & Ongoing Recording
- Record Transactions Accurately: Record all financial transactions using double-entry bookkeeping.
- Apply GAAP Principles: Ensure revenue is recognized when performance obligations are satisfied, match expenses to related revenues, and capitalize appropriate costs.
- Make Adjusting Entries: At the end of each period, make necessary adjustments for accrued expenses, prepaid expenses, depreciation, and unearned revenue.
- Prepare Trial Balance: Generate a trial balance to ensure debits equal credits.
Step 3: Review, Reporting & Confirmation
- Generate Financial Statements: Use the adjusted trial balance to prepare the core statements: Income Statement, Statement of Retained Earnings, Balance Sheet, and Statement of Cash Flows.
- Include Disclosures: Prepare notes to the financial statements, a key GAAP requirement, detailing accounting policies, commitments, and contingencies.
- Review & Audit: Have financial statements reviewed internally and, if required by stakeholders, undergo an independent audit by a CPA firm to confirm GAAP compliance.
- File and Distribute: Provide the financial statements to lenders, investors, the board, or regulatory bodies as needed.
5. Frequently Asked Questions (FAQ)
Q1: Is GAAP mandatory for my new LLC or corporation? A1: No, state business formation filings do not require GAAP. However, banks, investors, and potential partners will likely require GAAP-compliant financials. It is a best practice for any serious business.
Q2: What is the difference between GAAP and tax accounting? A2: GAAP aims to present a fair and comparable view of financial performance. Tax accounting follows the Internal Revenue Code (IRC) to determine taxable income. Differences (like depreciation methods) lead to temporary or permanent differences between book and tax income.
Q3: Can I use cash-basis accounting and still be GAAP compliant? A3: No. GAAP requires the use of the accrual basis of accounting. Very small private companies may use cash-basis for simplicity, but they cannot claim their financials are prepared in accordance with GAAP.
Q4: Who sets GAAP in the United States? A4: The Financial Accounting Standards Board (FASB) is the primary private-sector organization that establishes and improves GAAP. The SEC has statutory authority to set standards for public companies but has historically delegated this to the FASB.
Q5: How much does it cost to implement GAAP? A5: Costs vary widely. They include accounting software subscriptions, potential CPA consulting fees for setup, and the internal labor cost of maintaining proper records. For an audit, fees depend on company size and complexity. Please verify with professional service providers.
Q6: What are the main principles of GAAP? A6: Key principles include the Revenue Recognition Principle, Matching Principle, Historical Cost Principle, Full Disclosure Principle, and the Going Concern Assumption.
6. Risks & Compliance
- Disclaimer: This article provides general information and does not constitute accounting, legal, or financial advice. You should consult with qualified professionals for guidance specific to your business.
- Non-Compliance Risks: Using non-GAAP accounting can lead to inaccurate financial data, difficulty securing loans, investor distrust, legal issues if misleading statements are made, and problems during an audit or sale of the business.
- Complexity: GAAP can be complex, especially for areas like leases, derivatives, or business combinations. Seeking professional help is often necessary.
- Staying Updated: GAAP standards evolve. Businesses, especially public ones, must monitor FASB updates (Accounting Standards Updates - ASUs) for changes that affect them.
7. References & Sources
- Financial Accounting Standards Board (FASB): The primary source for GAAP standards and updates. https://www.fasb.org/
- FASB Accounting Standards Codification®: The official source of authoritative GAAP. (Access requires a subscription).
- American Institute of CPAs (AICPA): Provides resources and guidance on GAAP implementation. https://www.aicpa.org/
- U.S. Securities and Exchange Commission (SEC): Regulates financial reporting for public companies and references GAAP. https://www.sec.gov/
- Internal Revenue Service (IRS): For information on tax accounting rules which differ from GAAP. https://www.irs.gov/
8. Related Topics
- Business Entity Selection (LLC, Corporation, etc.): Choosing a legal structure impacts equity accounting under GAAP.
- Employer Identification Number (EIN): Required for tax and banking purposes.
- Business Bank Account: Essential for separating personal and business transactions, a fundamental GAAP concept (Economic Entity Assumption).
- Business Licenses and Permits: General compliance requirements for operation.
- Startup Funding & Venture Capital: Scenarios where GAAP-compliant financials are crucial.