Unit economics
The revenue and costs associated with one customer (or one transaction). The fundamental health check for whether scaling makes the business better or worse.
Unit economics is the analysis of "what does one of the thing look like?" For a SaaS business, one unit is one customer; for an e-commerce business, one unit might be one order or one customer. The core question: does the unit make money on its own, or does scale need to fix something fundamentally broken?
The cleanest unit-economics test for a subscription business is:
- LTV of an average customer
- CAC to acquire one
- CAC payback period
- Gross margin on the unit
Together these tell you whether the business model works. A profitable unit + scalable acquisition = a business that gets healthier as it grows. A loss-making unit hoping scale rescues it is a business that gets worse as it grows.
The phrase "growth covers unit economics problems" comes up in pitches sometimes. It's almost always wrong. Either the unit makes money (good problem to scale) or it doesn't (bad problem to scale).
For first-time founders, the most common error is reporting blended unit economics — averaging customers acquired by all channels into one number — instead of cohort-by-channel. Paid social customers often have very different LTV:CAC than referrals; averaging hides the truth.
See also
- CAC (Customer Acquisition Cost) — The total cost of getting one paying customer. Marketing + sales spend in a period, divided by new customers from that period.
- LTV (Lifetime Value) — The total revenue (or gross profit) you expect to earn from a customer across their entire relationship with you.
- LTV:CAC ratio — The relationship between what a customer is worth to you over their lifetime and what you paid to acquire them. The most important single number in unit economics.
- Gross margin — Revenue minus the direct cost of delivering that revenue, divided by revenue. The percentage of each dollar of revenue you keep before operating expenses.
- CAC payback period — The number of months it takes for the gross profit from a new customer to repay what you spent to acquire them.
Ask Cashowa about unit economics
Apply this concept to your actual numbers — with verifiable math.