Opportunity cost
The value of the best thing you gave up in order to do the thing you chose.
Opportunity cost is the value of the best thing you gave up in order to do the thing you chose. It never appears on an invoice, which is precisely why it dominates outcomes in small businesses: the expensive decisions are rarely the ones that cost money, they are the ones that consumed the only week you had.
The practical version is that every yes is also a no, and the no is usually invisible. Taking a $4,000 project that fills three weeks is not a $4,000 decision. It is a decision to not do whatever else those three weeks could have held — the offer you were going to test, the partnership call you keep postponing, the systems work that would stop the next quarter looking like this one. Judged on its own, the project is obviously worth doing. Judged against the alternative, it often is not.
This is also why "I'm too busy" is rarely a scheduling problem. A calendar full of individually reasonable commitments is the normal outcome of evaluating each one alone. The correction is not discipline; it is making the comparison explicit, by keeping a short written list of what you would do with a free week. Without that list there is nothing for a new request to lose to.
A concrete case: a consultant billing $150 an hour spends six hours a week on bookkeeping to save $400 a month. The visible saving is $400; the opportunity cost is roughly $3,600 of billable capacity, or the entire redesign of the offer that never gets started.
Also known as
- cost of the alternative
- trade-off cost
Relevant for
- Founders
- Every yes is a no to something you never wrote down — keep the list, or new requests have nothing to lose to.
- Creators
- The client work you accept is paid for with the audience work you postpone, and only one of them compounds.
- Business owners
- Six hours a week of admin to save $400 is not a saving if your billable hour is $150 — price the week, not the task.