Gross Margin

Gross margin is revenue minus cost of goods sold (COGS) expressed as a percentage of revenue. It represents the portion of revenue available to cover operating expenses (sales, marketing, engineering, G&A) and ultimately produce profit. Gross margin varies dramatically by business model: SaaS typically 70-85%, physical goods 20-50%, marketplaces variable by take rate, services 40-70%. It's one of the most-important indicators of business model quality because operating costs are largely fixed at scale, and gross margin determines the ceiling on profitability. It distinguishes economically scalable business models from ones that struggle to ever become profitable.

The calculation:

Basic formula:

• Gross Margin = (Revenue - COGS) / Revenue
• Expressed as percentage.

Components of COGS:

For SaaS:

• Hosting and infrastructure (AWS, GCP, Azure costs).
• Third-party data licenses tied to product delivery.
• Customer support directly tied to product (not sales/upsell).
• Payment processing fees.
• Implementation services if recurring/required.

For physical goods:

• Materials and components.
• Manufacturing labor and overhead.
• Freight and shipping.
• Packaging.
• Inventory write-downs.

For services:

• Direct labor delivering the service.
• Travel costs directly related to delivery.
• Subcontractor costs.

For marketplaces:

• Payment processing (often the largest COGS item).
• Trust and safety operations.
• Direct platform costs.

What's NOT in COGS (operating expenses, below the gross margin line):

• Sales and marketing.
• R&D / engineering for product development (vs. delivery).
• General and administrative.
• Headquarters operations.

Benchmark gross margins by business model:

SaaS: 70-85% typical.

• High end (80-85%): efficient cloud delivery, minimal services, strong infrastructure margins.
• Low end (70-75%): heavier customer support, more services, less efficient infrastructure.
• Below 70%: typically signals operational inefficiency or business model challenges.

Marketplaces:

• Take rate determines revenue; gross margin depends on cost structure.
• Pure software marketplaces: high gross margins (70%+).
• Marketplaces with significant logistics or fulfillment: much lower margins.

Physical goods:

• Direct-to-consumer brands: 40-60% typically.
• Mass-market retail: 20-40%.
• Premium / luxury: 50-70%+.

Services:

• Software development / agencies: 40-60%.
• Strategy consulting: 50-70%.
• Implementation services: 20-40%.

Why gross margin determines profitability ceiling:

The structural argument:

• Operating expenses (sales, marketing, R&D, G&A) are largely fixed at scale.
• Gross margin is the contribution toward those fixed costs and profit.
• The higher the gross margin, the more revenue must cover OpEx.
• A 30% gross margin company needs 3x more revenue than an 80% gross margin company to produce the same gross profit.

The implication for company building:

• SaaS companies can be profitable at modest revenue scales because gross margins are high.
• Physical goods companies need much larger scale to achieve same profitability.
• Service companies have gross margins between SaaS and physical, with profitability dependent on utilization.

Operating disciplines to improve gross margin:

Pricing: charge more for the same delivery. Direct impact on margin.

Infrastructure efficiency: SaaS companies invest in infrastructure optimization to reduce hosting costs as a percentage of revenue.

Service productization: convert one-off services into productized offerings with better margins.

Customer success investment: better support tools reduce per-customer support costs.

Pricing model shifts: usage-based pricing can align costs and revenue better than flat-fee pricing.

What founders get wrong: Focusing on revenue growth without monitoring gross margin trajectory, then being surprised when scaling reveals operating leverage doesn't work because the underlying gross margin is too low. The right discipline: track gross margin monthly from $1M ARR onward, understand the structural components by business model, benchmark against industry standards, and invest in margin improvements (pricing, efficiency, productization). Gross margin is the ceiling on profitability; everything else follows from it.

Related: P and L Statement · Contribution Margin · Unit Economics · CAC Payback · Financial Model

FAQ

What is gross margin?
Revenue minus cost of goods sold (COGS) expressed as a percentage of revenue. Represents the portion of revenue available to cover operating expenses and produce profit. Varies dramatically by business model: SaaS 70-85%, physical goods 20-50%, services 40-70%.

What's a good gross margin for SaaS?
70-85% is typical. 80-85% indicates efficient cloud delivery and strong infrastructure margins. 70-75% indicates heavier customer support or services involvement. Below 70% typically signals operational inefficiency or business model challenges that may need addressing.

Why does gross margin matter so much?
Because operating expenses (sales, marketing, R&D, G&A) are largely fixed at scale, gross margin determines the ceiling on profitability. A 30% gross margin company needs 3x more revenue than an 80% gross margin company to produce the same gross profit. Gross margin is the structural determinant of whether a business model is scalable to profitability.