A self-serve till keeps a count for you. Every paid sale subtracts what sold, so the number in the Portal is always right about sales — automatically, forever. (If that part is new to you, start with how the shelf count stays right with no cashier.)
But that number is only half the job. The till knows what sold. It does not know what left. A jar someone walked off with, three tomatoes that cooked in the heat, a six-pack you handed a neighbor and forgot to ring up — none of that moves the count. So the number the Portal shows you is an expectation: this is what should be on the shelf if nothing left unpaid.
The only way to find out whether that's true is to count the shelf and compare. That gap — expected minus actual — is your inventory shrinkage, and it's the single most useful number a one-person stand almost never bothers to measure. Finding it is just a count and a subtraction. This is how to do it without turning it into a chore.
Why the till can't find shrink for you
It's worth being precise about this, because it's where most "inventory tracking" marketing quietly oversells.
The till counts sales, not objects. It is not a camera watching your table and tallying what's sitting there — it knows a carton of eggs is gone because a customer rang up a carton of eggs and paid (by scanning the barcode, snapping a photo for the AI to identify a label-less item, or tapping it on screen). A recorded sale is a hard fact, and building your inventory on hard facts is the only version of this that stays trustworthy over a season.
The flip side is the whole reason this article exists: anything that leaves the shelf without a recorded sale is invisible to the count. The system can't subtract what it never saw. What good software does instead is give you a precise expected number — so that when you physically count, the difference is measurable instead of a shrug. An honor box never gives you that number at all; it takes the money and records nothing.
How to run a count without it eating your morning
You don't need a scanner gun or a spreadsheet. You need ten quiet minutes and a phone. The trick is doing it in an order that doesn't fight you.
The order matters most at step one. If a till was offline when a sale happened — a fridge behind a metal barn wall, a booth with no signal — that sale rings up locally and syncs later. Count before it syncs and you'll "find" a shortfall that was just a sale in transit. Let the tablets catch up first, then count.
Reading the gap: a worked example
Say you counted your stand on a Sunday night. Most items matched. A few didn't. Here's the kind of picture a count turns up, translated into the number that actually matters — dollars off the shelf:
That picture tells you more than a single "total shrink" figure ever would, because the shape points at the cause:
- Tomatoes are perishable and sold by weight or by the each — a gap there is probably spoilage and over-handling, not theft. The fix is smaller restocks, not a lock.
- Eggs are the highest-value, most-wanted thing on the shelf. A persistent egg gap is the one worth watching — it's the item a grab-and-go taker reaches for.
- Jam came up one short. One jar over a week is almost certainly a miscount at restock, or a sample you gave away. Don't go hunting for a thief over a single jar.
- Honey matched exactly. Items that always reconcile tell you your counting is sound, so the gaps elsewhere are real signal, not sloppy counting.
A gap you can see per item is a gap you can act on. A gap buried in one lump total just makes you anxious.
How much is "normal"?
Some shrink is unavoidable. The question is whether yours is in the normal range or quietly out of control. The retail industry's own benchmark is a useful yardstick:
Treat 1.6% of sales as a rough ceiling for "normal," not a target. But read it with one big caveat: that average comes from staffed stores, where theft — internal and external combined — is nearly two-thirds of all shrink. An unattended stand has no employees, so that whole internal-theft slice doesn't exist for you. Your shrink is a different animal: outside theft, spoilage, and honest miscounts. If your measured gap is running well above a percent or two of sales, the good news is that it's almost always findable — because without staff in the mix, there are only a few places it can be coming from.
Where an unattended stand actually leaks
Once you're measuring the gap, you can tell these apart instead of assuming the worst:
- Spoilage and waste. The quiet leader for anything perishable. Shows up on produce, not shelf-stable goods. The fix is pack size, not security.
- Grab-and-go theft. Real, but usually smaller than people fear, and concentrated on the few highest-value, easiest-to-pocket items. (We dug into what the research actually says in honor-system farm stand theft.)
- Restock miscounts. You brought twelve, entered ten. This is the one that creates a surplus on the shelf and makes your "shrink" look better than it is — or worse, hides a real leak behind a counting error.
- Freebies and samples. The jar you gave a friend, the bruised peach you let a kid have. Legitimate, but it's still stock that left without a sale, and it belongs in your adjustment reason so you're not chasing a ghost.
Measuring the gap per item, over a few counts, sorts these out on its own. A leak that's always the same item is different from one that's spread across the shelf, and both are different from a number that jumps the week you restocked in a hurry.
Correcting the count the right way
When you find a gap, fix the number — but fix it so you can learn from it. Set the item's on-hand to what you actually counted. Because every change to a count leaves a trail — sales, restocks, and manual adjustments alike — the correction is recorded with your note, not quietly written over. Three counts later, that history is what lets you say "eggs come up short most weeks, honey never does" instead of guessing.
A few habits that keep the number honest:
- Adjust to the physical count, always. The shelf is the truth. The record serves the shelf, not the other way around.
- Write the reason. "Spoilage," "gave samples," "restock correction." Future-you is trying to find a pattern, and a blank adjustment tells them nothing.
- Count per location, separately. If you run more than one spot, each has its own on-hand. Count the farm fridge against the farm fridge's number, not a combined pile.
- Do it from the Portal, not the stand. Counts and corrections are back-office work you do from your phone or kitchen table. The unattended tablet never exposes your inventory to a customer standing in front of it — which is exactly what you want.
How often to count
Not daily — that's how counting becomes the chore you abandon. A workable rhythm for a small stand:
- Your few highest-value items: weekly. Eggs, meat, anything easy to pocket and worth pocketing. These are where a real leak hides and where catching it early pays.
- Everything else: monthly, or at a natural reset. End of a market season, a slow week, the day you'd be reorganizing the shelf anyway.
- Any item that keeps coming up short: every restock, until you've found the cause and it settles down.
The goal isn't a perfect count. It's a measured one — often enough that a leak shows up as a trend while it's still small.
What a count still can't do for you
Honest limits, so nothing surprises you:
- It won't tell you who or why. It gives you the gap and the item; the story is yours to piece together from where and when.
- It won't catch shrink in real time. A count is a snapshot — the leak happened sometime since the last one. Counting more often just shrinks that window.
- It won't replace a lock or a camera where you genuinely have a theft problem. Measurement tells you whether you do; it isn't the deterrent itself.
What it does do is turn "I think we're losing money somewhere" into "we lost $41 last month, mostly tomatoes, almost all spoilage." One of those sentences you can act on. The other just keeps you up at night.
Try it on your own shelf
You can't measure a gap without an expected number to measure against — and that's the number an honor box will never give you. TallyTill's Stand plan is free: $0 per device, no credit card to start, no expiration. Put a few real products on it, ring up a sale or two, then count the shelf and watch the gap appear.
Create a free Stand account, set one low-stock threshold, and do your first real count this week. (Every plan carries a small fee on card sales; cash and checks never do — the current numbers are on the pricing page.)
You already do the drive. You might as well know, to the dollar, what the shelf is telling you.
Source: NRF National Retail Security Survey 2023 — FY2022 average shrink rate (1.6% of sales) and total U.S. shrink ($112.1 billion).