Business Term
Cost
Cost is the economic burden or resource consumption required for a product, service, initiative, or activity.
- Formula
- Total cost = fixed cost + variable cost
- Use when
- Use it for profitability, pricing, investment, exit, and improvement priority decisions.
- Watch out
- Cost cutting alone can harm quality, growth, or risk posture.
Updated: 2026. 06. 27.Sources: 1
What it means
Cost is not just spending. It should be tied to purpose and outcome, and separated into cost of sales, expense, investment, fixed cost, and variable cost.
How to calculate it
| Lens | Formula / treatment | When to use it |
|---|---|---|
| Basic formula | Total cost = fixed cost + variable cost | Separates the cost structure |
What counts / what does not
| Item | Treatment | Why it matters |
|---|---|---|
| Include | COGS, labor, contractors, ads, tooling, capex when relevant | They are resources consumed for the decision |
| Exclude | Out-of-period spend, other initiatives' cost, irrelevant sunk cost | They distort comparison |
What moves the number
| Driver | Metric impact | What to watch |
|---|---|---|
| Fixed / variable cost | They behave differently against revenue and usage | Drives break-even |
| Unit price / volume / efficiency | Moves with price terms and productivity | Shows improvement levers |
When it helps
- Use it for profitability, pricing, investment, exit, and improvement priority decisions.
How to use it
- Fix period, scope, fixed/variable split, and COGS/opex classification first.
Decision cautions
- Cost cutting alone can harm quality, growth, or risk posture.
Example
Example: monthly cloud spend often behaves as variable cost, while office rent is usually fixed in the short run.
Compare with
| Metric | Difference | Why read together |
|---|---|---|
| Expense | Accounting expense | Cost is broader decision-oriented resource consumption |
| Investment | Spend for future return | Cost is not always investment |
Common mistakes
- Treating all spend as the same cost confuses what to cut with what to invest in.
Frequently asked questions
Are cost and expense the same?
They overlap, but expense is often accounting language while cost is broader decision language.
Sources
| Sources | Kind | Link |
|---|---|---|
| YogoQ Core business foundation editorial baseline | editorial | — |