Glossary/Investment Approach

Break-even

Break-even · Break-even Point

The level of revenue or price at which a company or investment neither loses nor gains — it exactly covers costs.

Break-even = Fixní náklady / (1 − Variabilní náklady / Tržby)
Investment Approach

What it is

Break-even is the point where revenues exactly equal costs — zero profit or loss. It is used in several contexts:

Operating break-even of a company: The revenue volume at which the company covers all fixed and variable costs. Break-even = Fixed Costs / (1 − Variable Costs / Revenue)

Options break-even: The underlying stock price at which an options strategy neither profits nor loses after paying the premium.

Investment break-even: The price the stock must reach for you to recoup your entry (including transaction costs, dividends, etc.).

Operating leverage and break-even: Companies with high fixed costs have a higher break-even, but once it is crossed, profits grow faster (higher operating leverage).

Why track it

Break-even is a practical reference point when evaluating:

  • Options strategies — whether the stock move is sufficient to generate a profit
  • New projects (CAPEX) — when the investment pays back
  • An entire company — at what revenue level it stops losing money

Companies with a low break-even (asset-light, high gross margin) are more resilient in a recession.

Real-world example

MSFT Straddle before earnings:

  • Buy call $380 + put $380, total premium $15
  • Call break-even: $395, Put break-even: $365
  • If MSFT moves less than $15 in either direction → premium is lost

Operating break-even of a SaaS startup:

  • Fixed costs $10M/month, gross margin 80%
  • Break-even = $10M / 0.80 = $12.5M ARR per month