MODULE 01 / LESSON 01
Retail Business Fundamentals
An owner's introduction to pricing, margins, cash flow, working capital, and operational decisions.
- Distinguish sales, gross profit, and operating profit.
- Calculate margin and markup without confusing them.
- Estimate break-even sales from contribution margin.
- Calculate working capital.
- Diagnose a retail operating problem using evidence.
1. How Retail Businesses Make Money
Retailers sell goods or services. Merchandise gross profit is net sales less cost of goods sold (COGS). That gross profit must cover operating costs before there is an operating profit.
Cost: $1.20; selling price: $2.00; gross profit: $0.80; gross margin: 40%; markup: 66.67%.
2. Gross Margin Versus Markup
Gross margin % = (selling price − product cost) ÷ selling price × 100.
Markup % = (selling price − product cost) ÷ product cost × 100.
An item costing $6 and selling for $10 has 40% gross margin but 66.67% markup. Quoting markup as margin can produce costly pricing mistakes.
3. Revenue, Profit, and Expenses
Sales alone do not indicate profitability. Here is a hypothetical convenience-store merchandise example.
| Monthly item | Amount |
|---|---|
| Merchandise sales | $80,000 |
| COGS | $56,000 |
| Gross profit | $24,000 |
| Rent, payroll, utilities, insurance, other operating expenses | $20,000 |
| Simplified operating profit | $4,000 |
Gross margin is 30%; operating profit margin is 5%. This simplified example excludes financing costs, income taxes, depreciation, and other potential adjustments. Profit is not the same as cash flow.
4. Fixed Costs, Variable Costs, and Break-Even
Rent may be fixed over a relevant range; merchandise costs are generally variable with sales. Payroll and utilities can have both fixed and variable components.
Fixed costs ÷ contribution margin ratio. If fixed costs are $20,000 and the contribution margin after all sales-variable costs is 30%, break-even sales are approximately $66,667.
5. Inventory and Working Capital
Inventory ties up cash. Excess stock increases exposure to expiry, damage, and shrinkage; too little stock causes missed sales. Working capital = current assets − current liabilities. Working capital is not automatically the same as cash available to spend.
6. Owner-Level Case Study
Before: $70,000 sales × 32% margin = $22,400 gross profit.
After: $90,000 sales × 24% margin = $21,600 gross profit.
Gross profit declined by $800 even though sales rose. Investigate product mix, discounts, supplier costs, data-entry errors, inventory counts, and shrinkage. Do not assume theft without evidence.
7. Five-Question Mastery Quiz
Each attempt tests the same five concepts with different amounts, formulations, and scenarios. You must score 5/5 to unlock completion. Attempts are unlimited.
8. Completion
Completion requires five correct answers on the current attempt. Your existing Study Center and progress backup will recognize the completed lesson.