Risk

Stress Testing

Scenario planning tells stories; stress testing does arithmetic — pushing your real numbers until something breaks, so you meet your breaking points on paper before reality introduces them.

  • Intermediate
  • 6 min total
  • 10 chapters

What decision this helps you make: Which shock breaks your business first — revenue, cost, timing, or combination — and therefore which buffer gets built before the others.

What this topic is

Stress testing pushes the business's actual numbers through standard shocks — revenue down, costs up, receivables stretched, combinations — and reads the breaking points: the specific level and month where cash goes negative.

Why it matters

Breaking points are facts about your current structure, discoverable today with spreadsheet math. The test that breaks you first ranks your preparations — and businesses that meet their breaking points on paper build buffers; those that meet them in reality build nothing afterward.

Who should learn it

Every owner with fixed costs and any revenue uncertainty — which is every owner.

What you will understand

  • The five-shock battery: revenue, cost, timing, combination, single-event
  • Breaking points as outputs: the level and month where cash fails
  • Why timing shocks catch profitable businesses (the illiquidity trap)
  • How the first-to-break test ranks which buffer to build first

Prerequisites

Common misconception

"We're profitable, so we'd survive a downturn." Profitability is a statement about the income statement; survival is a statement about cash and time. A profitable business with slow receivables, rigid costs, and thin reserves routinely fails the timing test alone — profitable on paper every month it starves. The stress test exists precisely because "profitable" and "durable" are different properties, and only one of them is visible in good times.