Unit Economics
Analyzing revenue and costs at the level of a single unit — one customer, one order. Includes: CAC, LTV, Gross Margin, Payback, Contribution Margin. The basis for understanding business sustainability.
In practice
Unit economics answers one question: 'is a single transaction with a single customer good for the business?' If yes, you can scale. If not, scaling just means a bigger loss. Understanding unit economics before scaling is the difference between growth and failure.
Common misconception
'Good unit economics is enough for growth.' Transaction-level unit economics is just the first step. You also need cohort-level unit economics (does it stay positive over time?) and unit economics at scale (do costs stay in check as you grow)?
How to fix it
Negative unit economics? (1) Identify the biggest driver — CAC? COGS? Churn? (2) Improve COGS — supplier negotiation, larger MOQ, (3) Lower CAC — organic channels, referrals, (4) Raise LTV — subscriptions, upsells, reduced churn.
Example
New D2C store: CAC $50, AOV $42, margin 35% = first-order contribution $14.7. Payback: $50/$14.7 = 3.4 orders = 10 months. With 25% monthly churn, most customers leave before payback. The problem: retention, not acquisition.
Priority
Calculate unit economics before spending a single dollar on advertising. Five numbers: CAC, AOV, gross margin, repeat rate, churn. If unit economics are negative, fix them before scaling. Scaling on negative unit economics just means bankruptcy faster.
Related terms
Keep learning. Metrics that touch the same area:
- Contribution MarginFinanceGross profit minus marketing, payment processing, and variable shipping costs. Contribution Margin = Net Revenue - COGS - Variable Costs. Reflects the real profit each order 'contributes' toward covering fixed costs.
- ROI – Return on InvestmentFinanceA general profitability metric: (net profit / investment cost) × 100. Different from ROAS — it includes all expenses.
- AOV – Average Order ValueFinanceTotal revenue divided by number of orders. The biggest lever for increasing revenue without more advertising.
- LTV / CLV – Customer Lifetime ValueFinanceTotal expected profit from a customer over the entire relationship. A healthy LTV:CAC ratio is 3:1.
- Gross MarginFinance(Sale price - COGS) / sale price × 100. The basis for every pricing and advertising decision.
- COGS – Cost of Goods SoldFinanceThe direct cost of producing or acquiring products sold. Includes: product + import shipping + customs + packaging.
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