Difficulty: Introductory | Prerequisites: None, though basic algebra helps for transaction analysis.
This material is the foundation of the entire financial accounting course. You are learning the language businesses use to communicate their financial health to outsiders: investors, creditors, regulators. Chapters 1 and 2 introduce the four core financial statements, the balance sheet equation that holds everything together, and the mechanical system (journal entries, T-accounts, trial balances) used to record and track transactions. If you are behind, start here; nothing later in the course makes sense without the balance sheet equation and the debit/credit framework.
Accounting measures business activity in dollar terms and reports it through four financial statements. The balance sheet equation (Assets = Liabilities + Stockholders' Equity) must always balance, and every transaction touches at least two accounts. Journal entries, T-accounts, and trial balances are the tools that keep the equation intact.
Accounting
The process of measuring, recording, and communicating the results of business activities. Often called "the language of business."
In simple terms, accounting is how a company keeps score.
Financial accounting
The branch of accounting aimed at external decision makers: investors, creditors, regulators. Governed by GAAP in the United States. This is what ACCT 100 covers.
Think of it as the public-facing report card for a business.
Managerial (cost) accounting
The branch of accounting aimed at internal decision makers: managers, executives. Covered in ACCT 200.
Think of it as the behind-the-scenes numbers managers use to run the company day to day.
Transaction
An event that affects the financial position of a business and can be measured in dollar terms.
In simple terms, if it changes what a company owns or owes, and you can put a number on it, it is a transaction.
Monetary unit assumption
Accountants measure everything in terms of a single monetary unit (dollars in the US). Non-monetary events are excluded.
Going concern assumption
Businesses are assumed to have indefinite lives. We do not account as though the company will shut down tomorrow.
Periodicity (time period) assumption
Continuous business activity is divided into discrete time periods (months, quarters, years) with arbitrary start and end dates, so performance can be measured and reported regularly.
Balance sheet
A financial statement that reports a business's financial position at a single point in time. Built on the equation Assets = Liabilities + Stockholders' Equity.
Think of it as a snapshot of what the company owns, owes, and is worth on one specific date.
Assets
Economic resources that provide future benefit to the business. Examples: cash, inventory, equipment, accounts receivable.
Liabilities
Future obligations, usually (but not always) to pay cash. Examples: accounts payable, notes payable, unearned revenue.
Stockholders' equity
The owners' residual claim on the company's assets after liabilities are subtracted. Also called "net worth." Made up of common stock and retained earnings.
Retained earnings
Cumulative net income that has been kept in the business rather than paid out as dividends.
In simple terms, the profits the company has earned over its life and not given back to shareholders.
Common stock
The portion of stockholders' equity that comes from owner (stockholder) contributions, not from business profits.
Income statement
A financial statement showing revenues minus expenses over a period of time. The bottom line is net income (or net loss).
Statement of stockholders' equity
Shows how stockholders' equity accounts changed during the period. Key formula: Beginning retained earnings + Net income - Dividends = Ending retained earnings.
Statement of cash flows
Details how and why the cash balance changed during a period. Split into three sections: operating, investing, and financing activities.
GAAP (Generally Accepted Accounting Principles)
The set of rules and standards that govern financial accounting in the United States.
Classified balance sheet
A balance sheet that separates assets and liabilities into current (due within one year) and noncurrent (due beyond one year) categories.
Current vs. noncurrent
Current = settled or used up within one year or less. Noncurrent = extends beyond one year.
Dividends
Distributions of earnings to shareholders. Declared dividends reduce retained earnings.
Par value
A legally determined, largely meaningless face value assigned to each share of stock. Common stock is recorded at par value; any excess goes to additional paid-in capital.
Additional paid-in capital (APIC)
The amount shareholders paid above par value when purchasing stock. Keeps the balance sheet in balance on stock issuance.
Journal entry
The formal record of a transaction, listing debits and credits. Format: date, debit account(s) with amount, then credit account(s) indented with amount. Debits must always equal credits.
Debit
An entry on the left side of a T-account. Increases assets; decreases liabilities and stockholders' equity.
Credit
An entry on the right side of a T-account. Decreases assets; increases liabilities and stockholders' equity.
T-account
A visual tool shaped like the letter T, used to track increases and decreases in a single account. Debits on the left, credits on the right. The ending balance sits on whichever side is larger.
Trial balance
A list of all account balances (debits and credits) at a point in time, used to verify that total debits equal total credits. Ordered like the balance sheet: current assets, noncurrent assets, current liabilities, noncurrent liabilities, stockholders' equity.
Accounting = measuring, recording, and communicating business results in financial terms
Two pillars:
Financial accounting: serves external users (investors, creditors). Governed by GAAP. This is ACCT 100.
Managerial/cost accounting: serves internal users (managers). This is ACCT 200.
A transaction is any event that changes the financial position of a business and can be assigned a dollar amount.
Three key assumptions underpin all financial reporting:
Monetary unit: everything is measured in dollars (or the relevant currency). If you cannot assign a dollar amount, it is not recorded.
Going concern: the business is assumed to continue operating indefinitely. We do not write the books as though the company is about to close.
Periodicity (time period): continuous business activity is sliced into discrete reporting periods (months, quarters, years) with defined start and end dates.
Balance sheet (statement of financial position)
Reports financial position at a single point in time (a snapshot, not a video).
Built on the fundamental equation: Assets = Liabilities + Stockholders' Equity
Assets: economic resources with future benefit (cash, equipment, inventory).
Liabilities: obligations the business owes, usually to pay cash in the future.
Stockholders' equity: the owners' residual interest. Two main components:
Retained earnings: cumulative profits kept in the business.
Common stock: value contributed by shareholders.
Income statement (statement of operations)
Measures performance over a period of time.
Core equation: Revenues - Expenses = Net Income
Revenues represent value earned; expenses represent resources consumed.
Statement of stockholders' equity
Shows how equity accounts changed during the period.
Key equation: Beginning Retained Earnings + Net Income - Dividends = Ending Retained Earnings
Bridges the income statement to the balance sheet.
Statement of cash flows
Explains how and why cash changed during the period.
Three sections:
Operating activities: cash from core business operations.
Investing activities: cash spent on or received from long-term assets.
Financing activities: cash from borrowing, repaying debt, issuing stock, or paying dividends.
Generally Accepted Accounting Principles are the authoritative rules for financial accounting in the US.
All publicly traded US companies must follow GAAP when preparing financial statements.
Tags: financial statements, balance sheet equation, income statement, statement of cash flows, statement of stockholders' equity, GAAP, assets liabilities equity, accounting assumptions, monetary unit, going concern, periodicity
Assets and liabilities are split into current and noncurrent:
Current: expected to be settled, used up, or converted to cash within one year or less.
Noncurrent: extends beyond one year. Examples: long-term notes payable, equipment, buildings.
Ordering on the balance sheet: current assets, then noncurrent assets; current liabilities, then noncurrent liabilities; then stockholders' equity.
Every transaction affects at least two accounts (dual effect). If only one account changed, the balance sheet equation would break.
Approach:
Identify which accounts are affected.
One side is usually obvious (often cash).
Use the balance sheet equation to figure out what else must change.
Confirm that the equation still balances.
Dividends are distributions of earnings to shareholders.
Three key dates:
Declaration date: the company becomes legally obligated to pay. Retained earnings decreases and dividends payable (a liability) increases on this date.
Date of record: determines which shareholders receive the dividend. No accounting entry required.
Payment date: cash is actually paid out. Cash decreases, dividends payable decreases.
When a company issues stock, cash increases and stockholders' equity increases.
The equity side is split between two accounts:
Common stock increases by the par value per share multiplied by the number of shares issued.
Additional paid-in capital (APIC) increases by the remainder (total cash received minus total par value).
The split between common stock and APIC is mechanical. Par value is a legal formality with no real economic meaning.
The formal way to record a transaction.
Format:
Date
Debit account title(s) and dollar amount (listed first)
Credit account title(s) and dollar amount (indented, listed second)
Rule: total debits must always equal total credits.
Assets are on the left side of the balance sheet equation. Debits increase assets; credits decrease assets.
Liabilities and stockholders' equity are on the right side. Credits increase them; debits decrease them.
Normal balances: assets carry debit balances; liabilities and equity carry credit balances.
A T-shaped diagram for a single account.
Left side = debits. Right side = credits.
The ending balance falls on whichever side is larger after debits and credits cancel out.
Every account in a journal entry gets its own T-account.
A complete list of all account balances at a point in time.
Purpose: verify that total debits equal total credits across the entire set of accounts.
Ordered the same way as the balance sheet: current assets, noncurrent assets, current liabilities, noncurrent liabilities, stockholders' equity.
Tags: classified balance sheet, current vs noncurrent, transaction analysis, dividends declaration date record date payment date, stock issuance, par value, additional paid-in capital, journal entries, debits credits, T-accounts, trial balance, normal balances
The balance sheet equation
Assets = Liabilities + Stockholders' Equity
This must hold at all times. Every transaction either keeps both sides equal or changes both sides by the same amount.
Net income
Revenues - Expenses = Net Income
Retained earnings equation
Beginning Retained Earnings + Net Income - Dividends = Ending Retained Earnings
This links the income statement to the balance sheet through the statement of stockholders' equity.
Stock issuance split
Cash received = Total proceeds from stock issuance
Common Stock increase = Par value per share x Number of shares issued
Additional Paid-in Capital increase = Total cash received - Common Stock increase
Debit/credit direction rules
Debit | Credit | |
|---|---|---|
Assets | Increase | Decrease |
Liabilities | Decrease | Increase |
Stockholders' Equity | Decrease | Increase |
Revenues | Decrease | Increase |
Expenses | Increase | Decrease |
Journal entry format
Date) Debit Account Title .... $amount
Credit Account Title .... $amountTotal debits must equal total credits.
The balance sheet equation is how every publicly traded company reports its financial position to investors. When you read that a company has "$50 billion in assets," that number sits inside the same A = L + SE framework you are learning here. Dividends are the mechanism through which companies like Apple and Coca-Cola return profits to shareholders; the declaration-record-payment sequence you study is the exact process those companies follow.
"Debit means bad and credit means good." Debit and credit are directional terms, not value judgements. A debit to Cash is good news for the company (cash went up). A credit to Cash means cash went down. It depends entirely on the account.
"The balance sheet shows how much the company is worth on the open market." The balance sheet reports book values based on historical cost, not current market value. A company's market capitalisation can be very different from its stockholders' equity.
"Dividends are an expense." Dividends are a distribution of earnings to owners, not a cost of doing business. They reduce retained earnings, not net income.
"Par value tells you what the stock is worth." Par value is a legal formality, often set at a fraction of a penny per share. It has no connection to the stock's market price.
⚠️ The balance sheet equation must balance after every single transaction. If your answer does not balance, you have made an error.
⚠️ Dividends reduce retained earnings, not expenses. They do not appear on the income statement.
⚠️ Debits must always equal credits in every journal entry. This is the single most testable mechanical rule.
⚠️ Know the three dividend dates and which one triggers the accounting entry (declaration date).
⚠️ On stock issuance, the split between common stock (par value) and APIC is a frequent exam question. Cash = Common Stock + APIC.
True or false: Assets = Liabilities + Stockholders' Equity must hold at all times.
Answer: True.
Fill in the blank: Revenues - ________ = Net Income.
Answer: Expenses.
True or false: A debit always increases an account balance.
Answer: False. A debit increases assets and expenses, but decreases liabilities, stockholders' equity, and revenues.
Fill in the blank: The accounting entry for dividends is recorded on the ________ date.
Answer: Declaration date.
True or false: Par value represents the true market value of a share of stock.
Answer: False. Par value is a legal formality with no real economic meaning.
Q: A company has $200,000 in assets and $75,000 in liabilities. What is stockholders' equity?
A: $125,000. Assets ($200,000) = Liabilities ($75,000) + Stockholders' Equity, so SE = $200,000 - $75,000 = $125,000.
Q: A company issues 1,000 shares of $1 par value stock for $15 per share. What journal entry is recorded?
A: Debit Cash $15,000. Credit Common Stock $1,000 (1,000 shares x $1 par). Credit Additional Paid-in Capital $14,000 ($15,000 - $1,000).
Q: On which date does the accounting entry for a dividend occur, and what accounts are affected?
A: The declaration date. Retained earnings decreases (debit) and dividends payable increases (credit).
Q: A company purchases equipment for $50,000 cash. How does this affect the balance sheet equation?
A: Assets stay the same in total. Cash (an asset) decreases by $50,000, and Equipment (an asset) increases by $50,000. One asset is swapped for another.
Q: If an account normally has a credit balance, what type of account is it?
A: A liability, stockholders' equity, or revenue account. All three normally carry credit balances.
Q: What is the purpose of a trial balance?
A: To verify that total debits equal total credits across all accounts. It is a summary of every account's ending balance, listed in balance sheet order.
The balance sheet equation and the debit/credit framework from Chapters 1 and 2 carry through every subsequent topic in the course. Chapter 3 builds on this by introducing revenue and expense recognition (accrual accounting), which changes how and when transactions hit the income statement. Chapter 4 introduces adjusting entries, which correct timing differences at period end, and closing entries, which zero out temporary accounts and update retained earnings, completing the cycle that begins here.
If you are comfortable with the balance sheet equation and can trace a transaction through journal entries, T-accounts, and a trial balance, the later chapters will click more easily.
accounting, financial accounting, managerial accounting, cost accounting, ACCT 100, balance sheet, income statement, statement of stockholders' equity, statement of cash flows, assets, liabilities, stockholders' equity, net worth, retained earnings, common stock, GAAP, generally accepted accounting principles, monetary unit assumption, going concern assumption, periodicity, time period assumption, classified balance sheet, current assets, noncurrent assets, current liabilities, noncurrent liabilities, transaction analysis, dual effect, dividends, declaration date, date of record, payment date, stock issuance, par value, additional paid-in capital, APIC, journal entry, debit, credit, T-account, trial balance, normal balance, accounting equation, A = L + SE