Chapter 32 — Key Takeaways

The core claims

1. Break-even is one division. The work is the fixed/variable split, and that is where it goes wrong. Bellwether's plan produced two earlier break-even figures — \$1,030,454 in Chapter 4 and \$986,700 in Chapter 5 — and both were low, for different reasons, entirely because of how labor was sorted.

2. A correct total is not evidence of a correct split. Chapter 4's labor model (\$252,000 fixed + 16.0% variable) reproduced the plan's \$500,000 exactly at \$1,550,000 of sales, which is why nobody examined it. The two errors cancelled at exactly one volume — the one the plan was written for. Break-even is a question about every other volume.

3. Semi-variable cost is the category that makes restaurants awkward, and it must be split explicitly. Utilities, repairs, and breakage all have a fixed base and a variable slope. Use the high-low method, then sanity-check the base against a month you were closed.

4. The labor floor is real and you can point at it. Bellwether's is \$191,895 — three burdened salaries plus about 26½ hours a week of open-and-close hourly time. That is \$527 a day, spent before a single guest sits down, and it means roughly the first 33 covers of a service pay for the fact that the door was unlocked.

5. Every dollar of new fixed cost costs \$2.47 of sales. That is 1 ÷ CM ratio, and it is the most useful single multiplier in the chapter. A \$58,760 assistant general manager raises break-even by \$144,984 and nine covers a night, forever.

6. A daypart's contribution and a daypart's profitability are two different questions. Bellwether's brunch contributes \$94,037 a year against maybe \$18,000 of genuinely avoidable fixed cost — so closing it costs about \$76,000. Fully allocated it earns \$16,532, clearing its own break-even at 91 covers a service against 110. Keep it. Do not expand it at dinner's expense: every dollar moved from dinner to brunch costs about eight cents of contribution.

7. Operating leverage means a 10% revenue miss is a 33% profit miss. At Bellwether, \$155,000 of lost revenue takes \$92,181 of variable cost with it and leaves \$62,819 on the floor. That is nine and a half dinner covers a night — two and a half tables you would not notice from the host stand.

8. Break-even is mix-dependent. The same restaurant breaks even at \$1,079,815 if everything softens together and at \$1,097,498 if only dinner softens, because brunch's CM ratio is nearly eight points worse. A break-even quoted without its mix assumption is incomplete.

9. Name your revenue base, every time. Bellwether has two: \$27,130 a week from base covers × check (\$1,410,760 a year) and \$29,808 a week of plan revenue (\$1,550,000). Dividing one by the other manufactures a phantom \$51.64 average check and overstates break-even by about seven covers a night.

10. Break-even does not know cash exists. Add the \$69,500 of debt service and the floor goes from 66 to 77 dinner covers a night. Add a 1.5% capital-replacement reserve and it is 80. Neither figure accounts for the sales-tax remittance, inventory build, or distributions. Chapter 33 handles the rest.

11. Model the ramp. Chapter 9's first quarter runs at 66.6% prime cost, which pushes Q1's break-even to an annualized \$1,113,292 on the plan's labor line and \$1,269,984 on Chapter 19's — 68 and 78 covers a night against a 66-cover annual figure. An annual-average break-even describes a year you are not yet living.

12. Use it to price a decision, not to render a verdict. The right output is never yes or no. It is "this costs nine covers a night, and here are the three places the return could come from."

The key formulas

CM ratio          = (sales - variable costs) / sales   =  1 - variable cost ratio

Break-even sales  = total fixed costs / CM ratio

Break-even covers = break-even sales / average check       << NAME THE REVENUE BASE

Break-even covers per night
                  = break-even covers / services per year
             -- or, holding the mix, scale the cover pattern by
                (break-even sales / expected sales)

Margin of safety  = expected sales - break-even sales
Margin of safety %= (expected sales - break-even sales) / expected sales

Degree of operating leverage (DOL)
                  = contribution margin / operating profit
       so:  % change in operating profit = DOL x % change in revenue

Cost of $1 of new fixed cost, in sales = $1 / CM ratio

Cash break-even   = (fixed costs + debt service + capital reserve) / CM ratio

High-low split of a semi-variable cost:
   variable rate = (high-period cost - low-period cost)
                   / (high-period sales - low-period sales)
   fixed base    = high-period cost - (variable rate x high-period sales)

Bellwether at a glance

Key terms

Fixed cost · Variable cost · Semi-variable cost (mixed cost) · Contribution margin ratio · Break-even point · Break-even covers · Margin of safety · Operating leverage · Degree of operating leverage · Break-even by daypart · Cash break-even

What you should be able to do Monday morning

Sort your own P&L into three buckets, split the semi-variable lines with the high-low method, compute your CM ratio, and write your break-even on the wall of the office in covers per night — two numbers, the accounting threshold and the cash threshold — then put both on the weekly flash report so that every manager who walks the floor knows, on any given evening, how many more guests it takes to pay for the night.