Principles of Accounting I
John Smith
February 2026
The foundation of accounting rests on the principle of double-entry bookkeeping, a system that has been in use since Luca Pacioli documented it in 1494 (Kieso et al., 2023). This problem requires the recording of five transactions using proper journal entry format, demonstrating understanding of account classification and the debit-credit mechanism.
Transaction 1: On January 5, the company received $50,000 in cash from investors in exchange for common stock. This transaction increases both assets (cash) and equity (common stock). The journal entry is recorded as follows:
Date: January 5
Debit: Cash $50,000
Credit: Common Stock $50,000
(To record issuance of common stock for cash)The debit to cash increases the asset account, while the credit to common stock increases the equity account. Both sides of the equation are equal, maintaining the fundamental accounting equation: Assets = Liabilities + Equity (Warren et al., 2022).
Transaction 2: On January 8, the company purchased equipment for $15,000, paying cash. This transaction exchanges one asset (cash) for another asset (equipment). The entry is:
Date: January 8
Debit: Equipment $15,000
Credit: Cash $15,000
(To record purchase of equipment)Transaction 3: On January 12, the company purchased supplies on account for $2,500. This creates both an asset (supplies) and a liability (accounts payable). The entry demonstrates the matching of assets with liabilities:
Date: January 12
Debit: Supplies $2,500
Credit: Accounts Payable $2,500
(To record purchase of supplies on account)Transaction 4: On January 15, the company provided services to a client and received $8,000 in cash. Revenue is recognized when earned, consistent with the revenue recognition principle established in FASB standards (Financial Accounting Standards Board, 2024):
Date: January 15
Debit: Cash $8,000
Credit: Service Revenue $8,000
(To record service revenue earned)Transaction 5: On January 20, the company paid $3,000 in salaries to employees. This reduces both assets (cash) and equity (through expense recognition):
Date: January 20
Debit: Salary Expense $3,000
Credit: Cash $3,000
(To record payment of employee salaries)Each journal entry follows the standard format with the date, account names, debit and credit amounts, and a brief explanation. This systematic recording ensures that all transactions are properly documented and can be traced through the accounting system.
Adjusting entries are essential to the accounting process, ensuring that financial statements reflect the true economic position of the company. The matching principle, a cornerstone of U.S. GAAP since its formalization in 1933, requires that expenses be matched with the revenues they generate (Kieso et al., 2023). Three adjusting entries are required at the end of the period:
Adjusting Entry 1: Prepaid Insurance
The company paid $12,000 for a one-year insurance policy on January 1. By January 31, one month of insurance has been consumed. The calculation is straightforward: $12,000 divided by 12 months equals $1,000 per month. The adjusting entry recognizes the expense:
Date: January 31
Debit: Insurance Expense $1,000
Credit: Prepaid Insurance $1,000
(To record insurance expense for January)This entry converts the prepaid asset into an expense, properly matching the cost with the period in which the insurance protection was provided (Warren et al., 2022).
Adjusting Entry 2: Depreciation
Equipment purchased for $15,000 on January 8 has an estimated useful life of 10 years with no salvage value. Using the straight-line depreciation method, the annual depreciation is $1,500. For the month of January, the depreciation is calculated as: $1,500 divided by 12 equals $125. The adjusting entry is:
Date: January 31
Debit: Depreciation Expense $125
Credit: Accumulated Depreciation $125
(To record depreciation on equipment)Accumulated depreciation is a contra-asset account that reduces the book value of the equipment on the balance sheet, providing a historical record of the asset's cost while showing its remaining value (Horngren et al., 2023).
Adjusting Entry 3: Accrued Salaries
Employees earned $1,500 in salaries during the last week of January but will not be paid until February 5. The accrual accounting method requires recognition of this liability:
Date: January 31
Debit: Salary Expense $1,500
Credit: Salaries Payable $1,500
(To record accrued salaries)This entry ensures that January's financial statements reflect all expenses incurred during the period, regardless of when payment occurs. This application of the matching principle is fundamental to accrual accounting (FASB, 2024).
The trial balance is a list of all general ledger accounts with their debit or credit balances as of a specific date. It serves two purposes: to verify that debits equal credits and to provide the data needed for financial statement preparation. The following trial balance reflects all transactions and adjusting entries as of January 31:
| Account Name | Debit | Credit |
|---|---|---|
| Cash | $52,000 | |
| Accounts Receivable | $2,000 | |
| Prepaid Insurance | $11,000 | |
| Supplies | $2,500 | |
| Equipment | $15,000 | |
| Accumulated Depreciation | $125 | |
| Accounts Payable | $2,500 | |
| Salaries Payable | $1,500 | |
| Common Stock | $50,000 | |
| Service Revenue | $8,000 | |
| Salary Expense | $4,500 | |
| Insurance Expense | $1,000 | |
| Depreciation Expense | $125 | |
| TOTALS | $88,125 | $88,125 |
The trial balance demonstrates that the accounting equation remains in balance. Total debits of $88,125 equal total credits of $88,125, confirming that no errors were made in recording transactions and adjusting entries. This verification step is critical before proceeding to financial statement preparation (Warren et al., 2022).
Financial statements communicate the financial position and performance of a business to stakeholders. The four primary financial statements provide a comprehensive view of the company's financial condition. These statements must be prepared in accordance with Generally Accepted Accounting Principles (GAAP) to ensure consistency and comparability (FASB, 2024).
Income Statement
The income statement reports revenues and expenses for a specific period, resulting in net income or net loss. For the month ended January 31, the income statement is prepared as follows:
ABC Company
Income Statement
For the Month Ended January 31, 2026
Service Revenue $8,000
Expenses:
Salary Expense $4,500
Insurance Expense $1,000
Depreciation Expense $125
Total Expenses ($5,625)
Net Income $2,375The income statement follows a standard format with revenues listed first, followed by expenses organized by category. Net income of $2,375 represents the profit earned during the period and will be transferred to retained earnings (Kieso et al., 2023).
Statement of Retained Earnings
The statement of retained earnings shows changes in equity from retained earnings during the period. Since this is the company's first month of operations and no dividends were declared, the statement is straightforward:
ABC Company
Statement of Retained Earnings
For the Month Ended January 31, 2026
Retained Earnings, January 1, 2026 $0
Add: Net Income $2,375
Less: Dividends $0
Retained Earnings, January 31, 2026 $2,375This statement bridges the income statement and the balance sheet, showing how net income affects the equity section (Warren et al., 2022).
Balance Sheet
The balance sheet presents the company's financial position at a specific point in time, organized according to the accounting equation: Assets equals Liabilities plus Equity.
ABC Company
Balance Sheet
As of January 31, 2026
ASSETS
Current Assets:
Cash $52,000
Accounts Receivable $2,000
Prepaid Insurance $11,000
Supplies $2,500
Total Current Assets $67,500
Property, Plant and Equipment:
Equipment $15,000
Less: Accumulated Depreciation ($125)
Net Equipment $14,875
TOTAL ASSETS $82,375
LIABILITIES
Current Liabilities:
Accounts Payable $2,500
Salaries Payable $1,500
Total Liabilities $4,000
EQUITY
Common Stock $50,000
Retained Earnings $2,375
Total Equity $52,375
TOTAL LIABILITIES and EQUITY $56,375The balance sheet demonstrates that the company's assets of $82,375 equal the sum of liabilities and equity, maintaining the fundamental accounting equation (Horngren et al., 2023).
Accounting scenarios often present complex situations requiring professional judgment and application of GAAP principles. Consider the following scenario: A company receives a $10,000 advance payment from a customer for services to be provided over the next three months. How should this transaction be recorded?
Under the revenue recognition principle, revenue should be recognized when earned, not when cash is received. The FASB established this principle in 1973 and has refined it through subsequent standards (FASB, 2024). Therefore, the initial receipt of cash should be recorded as a liability (unearned revenue), not as revenue:
Date: Receipt of Advance Payment
Debit: Cash $10,000
Credit: Unearned Service Revenue $10,000
(To record advance payment for future services)As the company provides services each month, one-third of the unearned revenue is recognized as earned revenue through an adjusting entry:
Date: End of Month 1
Debit: Unearned Service Revenue $3,333.33
Credit: Service Revenue $3,333.33
(To record service revenue earned)This treatment ensures that revenue is recognized in the period in which the services are actually provided, consistent with the matching principle (Kieso et al., 2023). The alternative treatment would violate GAAP and misrepresent the company's financial performance.
Professional judgment is essential in accounting. While GAAP provides guidance, accountants must evaluate each situation based on its specific facts and circumstances. The Sarbanes-Oxley Act of 2002 emphasized the importance of internal controls and ethical accounting practices, requiring companies to maintain systems that ensure accurate financial reporting (SEC, 2024). This scenario demonstrates how proper application of accounting principles protects stakeholders and maintains the integrity of financial information.
Financial Accounting Standards Board. (2024). Accounting standards codification. https://www.fasb.org/
Horngren, C. T., Sundem, G. L., Stratton, W. O., & Burgstahler, D. (2023). Introduction to management accounting (17th ed.). Pearson Education.
Kieso, D. E., Weygandt, J. J., & Warfield, T. D. (2023). Intermediate accounting (18th ed.). John Wiley & Sons.
U.S. Securities and Exchange Commission. (2024). Division of corporation finance. https://www.sec.gov/cgi-bin/browse-edgar
Warren, C. S., Reeve, J. M., & Duchac, J. E. (2022). Accounting (27th ed.). Cengage Learning.
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The matching principle requires that expenses incurred in generating revenues should be recognized in the same period as those revenues. This means you match costs with the revenues they help produce. For example, if you pay for insurance that covers 12 months, you recognize one month's expense each month rather than the entire amount in month one. This ensures financial statements accurately reflect the economic activity of a specific period.
A trial balance is prepared by listing all general ledger accounts with their debit or credit balances as of a specific date. The process involves: (1) Extracting all account balances from the general ledger, (2) Listing accounts in order (assets, liabilities, equity, revenues, expenses), (3) Placing debit balances in the left column and credit balances in the right column, (4) Totaling both columns to verify that debits equal credits. If totals don't match, there's an error in journalizing or posting that must be corrected.
A journal entry is the initial recording of a transaction in chronological order, showing the date, accounts affected, amounts, and description. The general ledger is where these journal entries are posted to individual accounts organized by account type. The journal is the 'book of original entry' while the ledger is the 'book of accounts.' Journal entries show what happened and when; ledger accounts show the running balance for each account.
Depreciation is calculated using the straight-line method: (Asset Cost - Salvage Value) ÷ Useful Life in Years = Annual Depreciation. For monthly depreciation, divide the annual amount by 12. For example, equipment costing $15,000 with a 10-year life and no salvage value: ($15,000 - $0) ÷ 10 = $1,500 per year, or $125 per month. The adjusting entry debits Depreciation Expense and credits Accumulated Depreciation (a contra-asset account).
The four main financial statements are: (1) Income Statement - shows revenues and expenses for a period, resulting in net income or loss, (2) Statement of Retained Earnings - shows changes in equity from net income and dividends, (3) Balance Sheet - shows assets, liabilities, and equity at a specific date, and (4) Cash Flow Statement - shows cash inflows and outflows from operating, investing, and financing activities. These statements work together to provide a complete picture of financial performance and position.
The accounting equation is: Assets = Liabilities + Equity. This fundamental equation must always balance. It's important because it ensures that every transaction is recorded with equal debits and credits, maintaining the integrity of financial records. Every business transaction affects this equation. For example, if you borrow $10,000 (increasing assets and liabilities equally) or invest $5,000 (increasing assets and equity equally), the equation remains balanced.
An accrued expense is an expense that has been incurred but not yet paid. It's recorded through an adjusting entry to ensure the matching principle is followed. For example, if employees earned $1,500 in salaries during the last week of the month but won't be paid until the next month, you record: Debit Salary Expense $1,500, Credit Salaries Payable $1,500. This recognizes the expense in the correct period and creates a liability for the amount owed.
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