Definition

Gross margin

Gross margin is revenue minus the direct cost of goods or services sold, expressed as a percentage of revenue. It measures how much a business keeps from each sale before covering overhead like rent, marketing, and administrative salaries, and it’s usually the first place a buyer looks to judge the health of the core pricing model.

Reviewed

Gross margin isolates the most basic economics of a business: what it costs to actually produce or deliver whatever it sells, set against what customers pay for it. Everything else — rent, marketing, management salaries — sits below the gross margin line, in operating expenses.

Why it’s an early diligence checkpoint

A business with a thin or declining gross margin has less room to absorb rising costs or fund growth, no matter how healthy its overall revenue looks. Buyers often check gross margin trend over several years before moving on to other metrics, since a weakening core margin is harder to fix than an overhead problem.

How it varies by business type

Gross margin norms differ enormously by industry — a software business and a grocery store are not comparable on this measure, since one has almost no direct delivery cost and the other runs on thin per-unit margins by design. Comparisons are only meaningful within a similar type of business.

Sources

This definition is checked against primary sources. Links were last confirmed on the dates shown.

  1. 01
    Treadstone LawLegal commentary
    How to Read a Business's Financial Statements Before You Buy in Ontario
    treadstonelaw.ca·Checked Aug 14, 2026
  2. 02
    Treadstone LawLegal commentary
    Cleaning Up Financial Statements Before Selling Your Ontario Business
    treadstonelaw.ca·Checked Aug 14, 2026

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