Due Diligence

The sales-drop-30-percent Audit

Learn a downturn stress test — would the business survive a ~30% sales drop? — that reveals the fragility good times hide, by testing the cost structure and the cash buffer against a realistic shock.

  • Beginner
  • 13 min total
  • 13 chapters

What decision this helps you make: Whether a business would survive a downturn — given its fixed costs and cash buffer — or swing to a loss and run out of cash.

What this topic is

The sales-drop-30% audit is a downturn stress test: if revenue fell ~30% (a recession, a lost customer, a demand shock), would the business survive? It tests two things — the cost structure (how much is fixed, via operating leverage) and the cash buffer (the runway to survive the shortfall).

Why it matters

A business comfortably profitable at today's volume can swing to a loss, or run out of cash, on a downturn if its costs can't flex and its buffer is thin. Good times hide this fragility. A business is only as safe as its worst plausible month, not its best.

Who should learn it

Anyone buying or running a business, especially a cyclical one.

What you will understand

  • Understand the sales-drop stress test: surviving a downturn
  • See how fixed costs (operating leverage) amplify a sales drop
  • Test the cash buffer and liquidity against the shortfall
  • Judge resilience by the worst plausible month, not the best

Prerequisites

Common misconception

"The business is comfortably profitable, so it's safe." Profitable at today's sales says little about survival if sales fall. A ~30% drop — from a recession, a lost customer, or a demand shock — hits hard if the cost base is mostly fixed (costs that don't fall with revenue), and can trigger a cash crisis if the buffer is thin. A business is only as safe as its worst plausible month, not its best — so test resilience against a realistic downturn, don't assume it from good times.