Key Terms Every New Business Owner Should Understand
From gross margin to burn rate — a plain-language reference for the financial and operational vocabulary that comes up constantly in early-stage business.
Why Business Vocabulary Matters Early
When you're early in building a business, the terminology you encounter — in loan documents, accounting software, investor conversations, or your own spreadsheets — can feel like a foreign language. Getting these terms wrong isn't just embarrassing; it leads to real decisions made on shaky ground.
This reference covers the financial and operational vocabulary that comes up most often in the first one to three years of running a business. Each definition is written for practical use, not academic precision. For broader financial language that overlaps with personal money management, see the plain-language budget glossary.
If you're just getting started, this grounded introduction to starting a small business covers the structural groundwork before the financial vocabulary becomes urgent.
Revenue
The total income a business generates from sales before any costs are deducted. Also called top-line income. Higher revenue does not automatically mean a profitable business.
Gross Margin
Gross profit expressed as a percentage of revenue. Calculated by subtracting the cost of goods sold from revenue, then dividing by revenue. It reflects how efficiently a business produces its core product or service.
Cash Flow
The actual movement of money into and out of a business over a given period. A business can show accounting profit while experiencing negative cash flow if customers haven't yet paid their invoices.
Burn Rate
The rate at which a business spends its cash reserves, typically measured monthly. Used alongside runway to determine how long a business can operate before needing additional revenue or funding.
Runway
The amount of time a business can continue operating at its current burn rate before cash runs out. Calculated by dividing cash on hand by monthly net cash outflow.
Break-Even Point
The sales volume at which total revenue equals total costs — the point where the business neither makes nor loses money. Understanding this number is essential for pricing and operational planning.
Accounts Receivable
Money that customers owe to your business for goods or services already delivered but not yet paid for. High AR can signal cash flow risk if collection is slow.
Accounts Payable
Money your business owes to suppliers or vendors for goods or services received but not yet paid for. Managing AP timing is a common tool for short-term cash flow management.
Fixed Costs
Business expenses that remain constant regardless of sales volume or production output, such as rent, insurance, and salaried staff. These costs must be covered even when revenue is low.
Variable Costs
Expenses that change in proportion to production or sales volume, such as raw materials or shipping. Understanding which costs are variable helps with pricing and scaling decisions.
Equity
The owner's residual interest in the business after all liabilities are subtracted from assets. On a balance sheet: Equity = Assets − Liabilities.
Balance Sheet
A financial statement that provides a snapshot of a business's assets, liabilities, and owner's equity at a specific point in time. It follows the equation: Assets = Liabilities + Equity.
Financial Terms You'll Use Constantly
These are the terms that show up in profit-and-loss statements, bank conversations, and cash planning discussions. Understanding them precisely — not approximately — matters.
| Gross Margin Formula | (Revenue − COGS) ÷ Revenue × 100 |
| Break-Even Formula | Fixed Costs ÷ Contribution Margin per Unit |
| Runway Formula | Cash on Hand ÷ Monthly Net Burn Rate |
| Balance Sheet Equation | Assets = Liabilities + Equity |
| Net Profit | Revenue minus ALL expenses (COGS, operating, tax, interest) |
Revenue, Profit, and the Stuff Between
Revenue (also called top-line income) is the total money your business brings in before any costs are subtracted. It tells you how much you're selling — not how much you're keeping.
Gross profit is revenue minus the direct cost of producing your goods or services (called cost of goods sold, or COGS). Divide gross profit by revenue and you get your gross margin — usually expressed as a percentage. A business with $100,000 in revenue and $60,000 in COGS has a 40% gross margin.
Net profit (or net income) is what remains after subtracting all expenses — COGS, operating costs, taxes, interest, and everything else. This is the bottom line.
Cash Flow vs. Profit
Many first-time owners are surprised to discover their business can be profitable on paper while running out of cash. This happens because profit is an accounting measure, while cash flow reflects actual money moving in and out. A sale recorded in November may not be paid until January — your income statement shows the profit, but your bank account doesn't yet. This gap quietly sinks otherwise promising businesses. See why early businesses run out of cash before they run out of customers for a deeper look at this dynamic.
Burn Rate and Runway
Burn rate is the speed at which your business spends cash reserves — typically expressed as a monthly figure. If you have $90,000 in the bank and you're spending $15,000 per month more than you're bringing in, your burn rate is $15,000/month.
Runway is how long your current cash will last at the current burn rate. In the example above, that's six months of runway. Knowing your runway tells you when you need to hit profitability, raise money, or cut costs.
Operational and Structural Terms
Fixed vs. Variable Costs
Fixed costs stay the same regardless of how much you produce or sell — rent, salaries, and software subscriptions are common examples. Variable costs rise and fall with output — raw materials, packaging, and shipping costs typically fall here. Understanding which of your costs are fixed and which are variable shapes how you price, scale, and weather slow periods.
Break-Even Point
Your break-even point is the volume of sales at which total revenue equals total costs — you're neither making nor losing money. Calculating it requires knowing your fixed costs and your contribution margin per unit (the selling price minus the variable cost per unit). It's a foundational planning number for any new business.
Accounts Receivable and Accounts Payable
Accounts receivable (AR) is money owed to your business — invoices you've issued that haven't been paid yet. Accounts payable (AP) is money your business owes to others — supplier invoices you haven't settled. Managing both carefully is central to maintaining healthy cash flow.
Equity, Liability, and the Balance Sheet
A balance sheet is a financial snapshot showing what your business owns (assets), what it owes (liabilities), and what's left over for the owner (equity). The formula is simple: Assets = Liabilities + Equity. Understanding your balance sheet is foundational to understanding the overall financial health of your business — a concept that parallels how net worth works for individuals.
Business Model vs. Business Idea
A business idea is a concept — a problem you've identified and a potential solution. A business model defines how your solution generates revenue: who pays, how much, how often, and through what mechanism. Subscription, transaction, licensing, and service-retainer are all examples of different model structures. The distinction matters enormously in early planning — see the difference between a business idea and a business model for a fuller explanation.
This article is for general informational and educational purposes only and does not constitute financial, legal, or professional business advice. Consult a qualified accountant, attorney, or business adviser for guidance specific to your situation.
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