Most operators can find their P&L and far fewer use it. That is not an intelligence problem — it is that the document was designed for accountants, arrives weeks after the period it describes, and does not tell you what to do.
It is still the single most useful management document you have, provided you read it in the right order and ignore most of it most of the time.
Read it in this order
Not top to bottom. Start with the lines you can change this week, then widen out.
- Prime cost (food + labour)
- The components of prime cost separately
- Controllable operating expenses
- Occupancy and fixed costs
- The bottom line
The bottom line comes last deliberately. It is the output of everything above it, and staring at it tells you nothing about which input to touch.
Sales
The top line, and the least interesting number on the page. Sales tells you volume; it tells you nothing about whether that volume was worth having.
What is worth extracting here is the split — by day-part, by channel, by category. A month where sales held steady but the mix moved from entrées to appetisers is a month where your margin fell while your top line did not. That movement is invisible on the sales line alone.
Cost of goods sold
What you spent on the product you sold. Expressed as a percentage of sales, this is your food cost — but the percentage is a summary, and summaries hide the thing you need.
A stable food cost percentage can conceal an unprofitable item selling well, offset by a profitable one selling badly. The percentage is for spotting movement; item mix is for finding cause. If this line moves and you cannot explain it, the explanation is in your sales mix report, not here. That is the work covered in menu engineering.
One practical note: this line is only trustworthy if your inventory counts are real. A P&L built on estimated inventory produces a food cost that bounces month to month for reasons that have nothing to do with the kitchen.
Labour
Usually your largest controllable cost and the one that moves fastest. Worth separating into at least three parts:
- Hourly — the part that should flex with sales
- Salaried management — fixed in the short term
- Taxes and benefits — often 10–15% on top of wages, and frequently forgotten when operators estimate labour cost in their heads
That third component is why mental arithmetic about labour is usually optimistic. If you are reasoning about an extra shift, you are reasoning about more than the hourly rate. Getting labour under control goes into how to schedule against sales rather than habit.
Prime cost: the number that matters most
Food plus labour. If you track one figure weekly, track this one.
It matters because the two lines trade against each other. A kitchen can cut food cost by prepping everything in-house and spend the saving twice over in labour. Another can cut labour by buying prepped product and watch food cost climb. Looking at either in isolation lets a real problem hide behind an apparent improvement.
Prime cost is also the number you can act on at a weekly cadence, which the rest of the P&L mostly cannot be.
Controllable operating expenses
Everything you spend to run the place that is not product or people: supplies, repairs, utilities, marketing, credit card fees, delivery commissions.
Individually small, collectively significant, and the category where costs accumulate quietly because no single line ever justifies attention. The useful discipline is to review this section properly once a quarter rather than skim it monthly. Subscriptions that no longer earn their place live here, as do delivery commissions that have grown into a major cost since anyone last looked at them.
Occupancy and fixed costs
Rent, insurance, licences, loan payments, depreciation. Mostly outside your control inside a given year, which is exactly why they deserve a different kind of attention.
Because they are fixed, their percentage moves with sales. Occupancy climbing as a percentage while rent has not changed means sales fell. That makes this section a useful cross-check on the top line rather than something you act on directly.
Net profit
What is left. It is a result, not a lever, and the common mistake is to manage it directly — cutting whatever is nearest when it looks thin, which is usually marketing or the labour that protects the guest experience, and usually makes next quarter worse.
What to actually do with it each month
- Compare against the same period last year, not last month. Most food-service businesses are seasonal, and month-over-month comparisons mostly measure the calendar.
- Look for movement, not absolutes. A two-point shift in prime cost matters more than whether you hit a benchmark someone else set.
- Pick one line to work on until the next statement. P&Ls arrive monthly; meaningful operational change takes longer than that.
- Keep a note of what you changed and when, so the next statement can tell you whether it worked.
If your P&L does not separate food and labour clearly enough to do this, that is worth fixing with your bookkeeper before anything else. A statement you cannot read at this granularity is an accounting record rather than a management tool.