Corporate Finance Principles and Financial Ratio Analysis

Posted on Sep 22, 2026 in Accounting and Finance

Corporate Goals and Intrinsic Value

Maximizing Shareholder Wealth

The primary goal of a corporation is to maximize the long-term stock price (intrinsic value), rather than focusing on short-term profits. Ethical conduct is mandatory, as mistreating stakeholders ultimately destroys value. Intrinsic value represents the fundamental long-run value derived from cash flows and risk, whereas the stock price is a short-run price determined by marginal investors. In equilibrium, the price equals the intrinsic value; a stock is considered undervalued if the price is less than the intrinsic value.

Business Structures and Governance

Proprietorships and Partnerships are characterized by easy setup and pass-through taxes; however, their main drawback is unlimited liability. In contrast, a Corporation offers limited liability, perpetual life, and easy stock transfer, though it faces the drawback of double taxation.

Conflicts between Managers and Stockholders are mitigated by stock options with vesting periods, board oversight, and the threat of hostile takeovers. Conflicts between Stockholders and Bondholders arise because stockholders prefer high risk while bondholders seek safety; these are often blocked by restrictive covenants.

Common Pitfalls and True/False Traps

  • The Treasurer manages cash and debt, while the Controller manages accounting and taxes.
  • The CEO and CFO must certify financials under the Sarbanes-Oxley Act (SOX).
  • Corporate raiders specifically target firms trading below their intrinsic value.
  • Excessive debt shifts downside risk from stockholders to bondholders.

Financial Markets and Institutions

Market Classifications

  • Money Markets: Debt instruments with a maturity of less than or equal to one year (e.g., T-bills, CD, commercial paper).
  • Capital Markets: Debt and stock instruments with a maturity greater than one year.
  • Primary Markets: Where new capital is raised (IPO/SEO).
  • Secondary Markets: Trading between investors where the firm receives zero cash.
  • Spot Markets: For immediate delivery.
  • Futures Markets: For agreed future delivery and price.
  • Public Markets: Organized exchanges.
  • Private Markets: Direct bilateral deals.

Institutions and Market Efficiency

Investment banks underwrite securities, while commercial banks take deposits and make loans. Financial services corporations combine banking and insurance. Mutual funds are SEC-regulated for retail investors, whereas hedge funds are lightly regulated and intended for wealthy investors.

The Efficient Market Hypothesis (EMH) consists of three levels: Weak (past prices are priced in), Semistrong (all public info is priced in instantly, meaning one cannot beat the market on public news), and Strong (all public and insider info is priced in).

Market Efficiency Traps

  • Secondary trades provide zero cash to the issuing firm.
  • Dealers profit from the Bid-Ask spread (buying at the Bid and selling at the Ask).
  • Stock prices react instantly to news; therefore, trading after public announcements yields no abnormal return.

Financial Statements and Cash Flow

The Four Key Statements

  • Balance Sheet: A snapshot where Assets = Liabilities + Equity, listed in order of liquidity.
  • Income Statement: Revenues minus costs equals Net Income.
  • Statement of Cash Flows: Divided into CFO (operating), CFI (investing/CapEx), and CFF (debt/equity/dividends).
  • Retained Earnings: Calculated as Ending RE = Beginning RE + Net Income – Dividends.

Interest is pre-tax deductible, acting as a tax shield, while dividends are paid after-tax.

Working Capital and Value Added

Net Working Capital (NWC) is Current Assets – Current Liabilities. Net Operating Working Capital (NOWC) excludes Notes Payable, as they are treated as financing. Economic Value Added (EVA) measures true profit after all capital costs; notably, positive Net Income can still destroy wealth (negative EVA) if the return on capital is less than the WACC.

Financial Statement Traps

  • Depreciation is a non-cash expense and is added back to cash flow.
  • CapEx drains cash immediately.
  • Notes Payable are interest-bearing debt and are strictly considered financing.
  • Positive Net Income with a return below WACC destroys shareholder value.

Ratio Analysis and the DuPont System

Financial Ratio Categories

  • Liquidity: Current and Quick ratios.
  • Asset Management: Turnover and DSO.
  • Debt Management: Leverage and TIE.
  • Profitability: Margins, ROA, ROE, and ROIC.

The Extended DuPont Equation

ROE = Profit Margin * Total Assets Turnover * Equity Multiplier. This system shows if ROE is driven by profit margin, asset utilization speed, or debt leverage. Basic Earning Power (EBIT / Total Assets) isolates operating asset productivity, as it is unaffected by debt or taxes.

Ratio Analysis Traps

  • The Quick Ratio is strictly lower than the Current Ratio because it excludes inventory.
  • A DSO greater than credit terms indicates late customer payments and poor collections.
  • BEP is unaffected by financing or taxes.
  • More debt raises the Equity Multiplier and ROE if ROIC is greater than the interest rate, but it also raises bankruptcy risk.

Essential Corporate Finance Formulas

Markets and Multiples Formulas

  • Bid-Ask Spread = Ask – Bid
  • Percentage Spread = (Ask – Bid) / Ask
  • Market Maker Profit = (Ask – Bid) * Volume
  • Market Capitalization: MC = Stock Price * Shares
  • Enterprise Value: EV = (Shares * Price) + Total Debt – Cash
  • EV / EBITDA = Enterprise Value / EBITDA
  • Price / Earnings: P/E = Stock Price / EPS
  • Price / Cash Flow: P/CF = Stock Price / CFPS
  • Market / Book: M/B = Stock Price / BVPS

Statements and Balance Sheet Formulas

  • Total Assets = Total Liabilities + Total Common Equity
  • Total Current Assets = Cash + Accounts Receivable + Inventories
  • Cash = Current Assets – Accounts Receivable – Inventories
  • Total Current Liabilities = Notes Payable + Accounts Payable + Accruals
  • Net Plant & Equipment = Total Assets – Total Current Assets
  • Total Debt = Notes Payable + Long-Term Debt
  • Retained Earnings = Total Assets – Total Liabilities – Common Stock
  • Ending Retained Earnings = Beginning RE + Net Income – Dividends
  • EBIT = Sales – Operating Costs (excl. D&A) – Depreciation
  • EBT = EBIT – Interest
  • Net Income = (EBIT – Interest) * (1 – Tax Rate) = EBT * (1 – T)
  • Statement of Cash Flows: Delta Cash = CFO + CFI + CFF

Working Capital and Cash Flow Formulas

  • Net Working Capital: NWC = Current Assets – Current Liabilities
  • NOWC = (Current Assets – Excess Cash) – (Current Liabilities – Notes Payable)
  • Operating Current Assets: OCA = Current Assets – Excess Cash
  • Operating Current Liabilities: OCL = Current Liabilities – Notes Payable
  • NOPAT = EBIT * (1 – Tax Rate)
  • Operating Cash Flow: OCF = EBIT * (1 – T) + Depreciation
  • Free Cash Flow: FCF = NOPAT + Depreciation – [CapEx + Delta NOWC]
  • Economic Value Added: EVA = NOPAT – (Total Invested Capital * WACC)
  • Market Value Added: MVA = (Shares * Stock Price) – Total Common Equity

Liquidity and Asset Ratio Formulas

  • Current Ratio: CR = Current Assets / Current Liabilities
  • Quick Ratio: QR = (Current Assets – Inventories) / Current Liabilities
  • Inventory Turnover: IT = Sales (or COGS) / Inventories
  • Days Sales Outstanding: DSO = (Accounts Receivable * 365) / Sales
  • Accounts Receivable = (DSO * Sales) / 365
  • Sales = (Accounts Receivable * 365) / DSO
  • Fixed Assets Turnover: FAT = Sales / Net Fixed Assets
  • Total Assets Turnover: TAT = Sales / Total Assets
  • Capital Intensity Ratio: CIR = Total Assets / Sales = 1 / TAT
  • Daily Sales = Sales / 365

Debt and Profitability Ratio Formulas

  • Debt-to-Capital: D/C = Total Debt / (Total Debt + Total Common Equity)
  • Debt Ratio: D/A = Total Liabilities / Total Assets
  • Debt-to-Equity: D/E = Total Debt / Total Common Equity
  • Equity Multiplier: EM = Total Assets / Total Common Equity = 1 + (Total Debt / Equity)
  • Times-Interest-Earned: TIE = EBIT / Interest
  • Interest Expense = EBIT / TIE
  • After-Tax Interest = Interest * (1 – Tax Rate)
  • Operating Margin: OM = EBIT / Sales
  • Profit Margin: PM = Net Income / Sales
  • Basic Earning Power: BEP = EBIT / Total Assets
  • Return on Total Assets: ROA = Net Income / Total Assets
  • Return on Common Equity: ROE = Net Income / Total Common Equity
  • ROIC = NOPAT / Total Invested Capital = [EBIT * (1 – T)] / (Total Debt + Equity)

DuPont, Per-Share, and Payout Formulas

  • DuPont Equation: ROE = Profit Margin * Total Assets Turnover * Equity Multiplier
  • Earnings Per Share: EPS = Net Income / Shares
  • Book Value Per Share: BVPS = Total Common Equity / Shares
  • Cash Flow Per Share: CFPS = (Net Income + Depreciation) / Shares
  • Dividends Per Share: DPS = Dividends / Shares
  • Dividend Payout Ratio: POR = Dividends / Net Income = DPS / EPS
  • Retention Ratio: RR = Addition to RE / Net Income = 1 – POR