Food Truck Bookkeeping: Food Cost Percentage, Commissary Fees, and Daily Cash Drops

The 2 A.M. Question Every Food Truck Owner Asks​

You sold out of tacos by 1 p.m., the line wrapped around the block, and your card reader barely stopped beeping all day. So why does your bank balance look thinner than it did last month?

Food trucks have a strange financial paradox: they can be genuinely busy and still lose money, because so much of the cost structure is invisible in the moment. A commissary kitchen bill lands once a month. Propane and generator fuel get paid in irregular chunks. Cash tips and card tips settle on different schedules. And food cost, the single biggest lever in the business, is easy to eyeball and easy to get wrong by 6 to 8 percentage points without anyone noticing until the P&L shows it.

The average food truck generates around $346,000 in annual revenue, but net profit margins typically land between 6% and 9% — sometimes 7% to 15% for hands-on owner-operators — which works out to roughly $24,000 to $70,000 in annual take-home pay. That's a wide range, and the difference between the low end and the high end almost always comes down to bookkeeping discipline, not cooking skill.

This guide walks through the three numbers that matter most for a mobile kitchen: food cost percentage, commissary and fixed overhead, and daily cash reconciliation — plus the recordkeeping habits that keep all three honest.

Why Food Truck Bookkeeping Isn't Restaurant Bookkeeping​

A brick-and-mortar restaurant has one kitchen, one point-of-sale system, one lease, and a fairly predictable rent and utility bill. A food truck operator is running a business that moves, which means the accounting has to track things a stationary restaurant never worries about:

• Multiple locations per week, each with different revenue potential, permit costs, and parking or lot fees
• A commissary kitchen relationship that's billed separately from the truck itself, often with variable hourly charges layered on top of a base membership
• Fuel costs that double as a cost center — both the truck's engine and, frequently, a separate generator running the kitchen equipment
• Split payment rails — cash in a drawer, card payments through a mobile POS, and increasingly delivery-app payouts that arrive on their own multi-day schedule

None of this is exotic once you build a chart of accounts around it, but generic small-business templates miss it. If your books don't have a dedicated line for commissary fees, generator propane, and location-specific parking permits, you're burying real costs inside a catch-all "supplies" or "other expense" category — and that's exactly where profit quietly leaks out.

Nailing Down Food Cost Percentage​

Food cost percentage is the ratio of what you spent on ingredients and paper goods to what you sold. It's the single number most likely to make or break a food truck's margin, because unlike rent, it isn't fixed — it moves with every recipe substitution, every portion creep, and every price hike from your supplier.

The benchmark: most food truck operators should be targeting a food cost percentage between 28% and 35% of revenue, with food and paper supplies specifically landing in the 25% to 28% range under tighter industry standards. Anything meaningfully above that and your pricing, portioning, or waste control needs attention.

The trap: audits of real food truck operations regularly find actual food costs running 6% to 8% higher than what the menu recipe cards say they should be. That gap comes from a handful of predictable places:

1. Unrecorded waste. Spoiled produce, over-prepped batches that don't sell out, and dropped or ruined items rarely get logged, so the "recipe cost" looks fine while real spend creeps up.
2. Portion drift. A slightly heavier scoop, an extra pump of sauce — multiplied across hundreds of orders a week, small inconsistencies add up to real dollars.
3. Comped and staff meals that go untracked. If your crew eats off the truck and it's not recorded as an expense (or a deliberate marketing cost), your food cost math is silently wrong.
4. Supplier price increases that never get repriced into the menu. Ingredient costs move constantly; if your menu prices don't get revisited on a set schedule, your margin erodes without a single line item ever "going wrong."

How to catch it: calculate food cost percentage weekly, not monthly. Weekly numbers are the only granularity fast enough to catch a bad week before it becomes a bad quarter. In your books, that means recording ingredient purchases and inventory counts on a consistent weekly cadence, and pairing that with weekly sales by category from your POS — not just a single lump revenue figure.

Commissary Fees: The Bill That Hides in Plain Sight​

Most cities require food trucks to prep and store food at a licensed commissary kitchen rather than at home, and that relationship comes with its own billing structure that's easy to under-budget for. A realistic 2026 planning range runs from $15 to $50 an hour for pay-as-you-go kitchen time, up to $300 to $1,500 a month for recurring access — and in major metro markets, a full-service commissary with parking and cold storage can run $1,000 to $3,000 a month or more.

The reason commissary costs are so easy to misjudge in your books is that they're rarely a single flat fee. A typical invoice can bundle:

• Base membership or monthly rent
• Metered kitchen hours beyond an included allotment
• Cold storage and dry storage fees
• Overnight parking
• Water, waste disposal, and utility surcharges
• Health inspection paperwork or facility-use documentation fees

If you're recording the whole commissary invoice as one lump "rent" expense, you lose the ability to see which component is actually growing. A truck that logged flat commissary costs for a year and then got hit with a bigger bill has no way to diagnose whether it's the hourly overage, a storage upsell, or a rate increase — unless the books break the invoice into its parts from day one.

Bookkeeping fix: set up separate sub-accounts under a "Commissary" parent account for base rent, metered hours, and storage/parking add-ons. It takes five minutes to configure and turns an opaque monthly bill into a trend line you can actually manage.

Daily Cash Drops: Small Errors, Compounding Damage​

Food trucks still run heavier cash volume than most modern restaurants, especially at events, festivals, and cash-preferring lunch crowds. That makes the daily cash drop — reconciling what's physically in the drawer against what the POS says should be there — one of the highest-leverage habits in the whole operation.

A few numbers worth internalizing:

• A perfectly reconciled drawer shows $0.00 over or short. Small variances of $1 to $2 are normal, just from making change.
• A daily variance over $5 deserves a look; anything over $20 needs same-day investigation, not a shrug and a note for later.
• The most common sources of cash shortages are mundane, not dramatic: unrecorded safe drops, miskeyed transactions, and simple change-making errors (handing back change for a $50 when the customer paid with a $20 creates an instant $30 gap).

Why it matters more on a truck: a brick-and-mortar restaurant has a manager on-site who can spot-check a drawer mid-shift. A food truck often runs with one or two people, no separation of duties, and a single till that has to survive a full service window without a break. That's exactly the environment where small errors go unnoticed the longest — which is also why building the daily reconciliation into your closing checklist, every single service, matters more here than almost anywhere else in food service.

Practical routine:

1. Count and log the drawer at the start of service (your opening float).
2. Do a mid-day cash drop into a locked drop safe if you're running a high-volume event — don't let cash accumulate to the point where a single error or theft wipes out a whole day's margin.
3. At close, reconcile drawer cash against POS-reported cash sales, log the over/short amount, and record card and delivery-app sales separately since they settle to your bank account on their own timeline.
4. Book the day's total revenue by payment type — cash, card, delivery app — not as one blended number. When a delivery-app payout lands three days later, you want your books to already be expecting it, not treating it as a mystery deposit.

Building a Chart of Accounts That Actually Fits a Truck​

Pulling the pieces above together, a food truck's books should separate at minimum:

• Revenue by location and by payment channel (cash, card, delivery app)
• Cost of goods sold, broken into ingredients, paper/packaging, and comped/staff meals
• Commissary costs, split into base rent, metered hours, and storage/parking
• Vehicle and equipment costs, split into truck fuel, generator fuel/propane, and maintenance — these move independently and get flattened into "vehicle expense" more often than they should
• Permits and location fees, since these can vary week to week depending on where you park
• Labor, if you have staff beyond the owner-operator

This is where plain-text, version-controlled bookkeeping tools have a real advantage over spreadsheet guesswork or a generic point-and-click app: every transaction is a line of text you can tag by location, payment channel, or cost category, and every categorization decision is auditable in the history rather than buried in a cell someone edited six months ago. When your food cost percentage jumps two points in a week, you want to be able to trace exactly which purchases and which sales moved it — not reconstruct a guess from memory.

Keep Your Truck's Finances as Organized as Your Line​

Between shifting locations, commissary invoices, and a drawer full of cash and card slips, a food truck's finances have more moving parts than most small businesses — which makes clear, well-categorized records the difference between a "busy" month and a genuinely profitable one. Beancount.io offers plain-text accounting that gives you full transparency and control over every transaction, with no vendor lock-in and no black-box categorization. Get started for free and see why finance-minded operators are switching to plain-text books.