Year-End Truck Stock Count: How to Count Parts Across Every Van

It's December 30, 4:15 PM. Your accountant wants an ending inventory number by the end of next week. Half your parts sit in the warehouse. The other half are rattling around in twelve service vans, three of which are still out on calls. Last year you pulled every tech in for a full morning to count, lost a day of billing, and the number still didn't match the books.

A year-end inventory count doesn't have to work like that. With a plan, a firm cut-off and a sensible way to count vans, you can get a number you trust without parking the fleet. Here's how to run it, from the planning meeting to the file you hand your accountant.

Why the year-end inventory count matters

The count isn't busywork. It feeds a number your books depend on.

If your business carries inventory, the IRS says in Publication 538, Accounting Periods and Methods that you "must value your inventory at the beginning and end of each tax year." Your ending inventory value is what your accountant uses to work out cost of goods sold. Overstate it and you understate what you spent on parts. Understate it and the opposite happens. Either way, the error rolls into next year's opening number too.

Publication 538 also covers the alternatives some businesses can choose, and the rules depend on your situation. That's a conversation for your accountant, not this post. What we can help with is the part that's yours: getting an accurate count of what's physically on the shelves and in the trucks on the last day of the year.

There's an operational reason too. A year-end count is the one time you see every bin and every van side by side. It's where you find the $900 control board that's been riding around since March, or the van that keeps running out of capacitors.

Plan the count before you touch a part

Most bad counts fail in the planning, not the counting. Lock these decisions down two to three weeks out.

Pick the date and the cut-off

Choose your count date and stick to it. Many shops count on the last working day of the year, or the first morning of the new one before the phones pick up.

Then set a cut-off for everything that moves stock:

• Receiving. Anything delivered after the cut-off stays boxed and tagged "after count" until the count closes.
• Transfers. No moving parts between the warehouse and vans, or van to van, during the count window.
• Jobs. Parts used on a job before the cut-off should be recorded against that job before counting starts. Parts used after belong to next year.

Without a cut-off, you'll count a part in the warehouse at 9 AM and again in a van at 2 PM after someone grabbed it.

Build count teams and use blind counts

Pair people up. One counts, one records. Rotate so nobody counts their own van alone.

Use blind counts where you can. The counter writes down what they see without knowing what the system expects. It feels slower, but it stops people from "finding" the number they were told to find.

Tag everything

Give every bin, shelf and van a count tag or sheet with a location name. When a location is done, the tag gets marked. At a glance, you know what's counted and what isn't.

Counting vans without parking the fleet

The warehouse is the easy part. Vans are where a truck stock inventory count usually falls apart, because they're moving, they're cluttered, and every tech organizes differently.

Stagger by technician

Don't pull every van in on the same morning. Split the fleet across the last three or four working days and count each van at shift end, when the tech is back anyway.

Here's an illustrative example. Say you run 12 vans carrying around 180 SKUs each. That's about 2,160 van line items. At roughly 30 seconds a line with two people, each van takes about 90 minutes. Count three vans a night over four nights and you've covered the fleet with four or five people staying late, instead of twelve techs losing a morning of billable calls. Your numbers will differ, so time one van first and plan from that.

Photograph the bins

Before counting, have the team take a photo of each bin or drawer. If a variance shows up later, the photo settles whether the part was there.

Two-person counts for high-value items

Some parts deserve a second set of eyes every time. Think compressors, inverter boards, specialty controls, water heater components, breakers and panels, and refrigerant recovery cylinders. Have two people count and initial these lines. A miscounted box of wire nuts is noise. A missing compressor is a real hit to your ending value.

Count what's actually on the truck

Techs carry things that aren't stock: customer-owned parts waiting to be returned, warranty cores, a buddy's tools. Agree in advance how those are handled so they don't end up in your count.

Van stock reconciliation: handling variances

You'll have variances. Every shop does. What matters is how you deal with them.

Set a recount threshold

Decide before the count what triggers a recount. A common approach is a value threshold (any line off by more than a set dollar amount) plus a rule for high-value items (any variance at all). Lines under the threshold get accepted. Lines over it get recounted by a different pair.

Look for patterns in the numbers

One van off by two filters isn't a story. Five vans all short on the same fitting probably means parts are going into jobs without being recorded. One van short on high-value items across the board is a different conversation.

Group variances by part and by van. The patterns tell you whether you have a recording habit to fix, a storage problem, or something that needs a closer look.

Decide who approves write-offs

Shrinkage and damaged stock need to come off the books, but not quietly. Agree who can approve a write-off and up to what amount. A common split is the operations manager for small adjustments and the owner for anything above a set figure. Write the reason next to each one. Your accountant will ask.

What to hand your accountant

When the count closes, put together a short package. At minimum:

• Ending inventory value for the year, with the costing method you use stated plainly.
• Purchases by supplier for the year, so they can tie your stock movements to what you bought.
• Cost of parts consumed on jobs, so they can see what went out the door on work you billed.
• A list of write-offs with dates, amounts, reasons and who approved them.
• Your count sheets or export, in case they want to trace a number.

A clean one-page summary with backup attached saves both of you a round of emails in January.

After the count: make next December easier

The shops with painless year-end counts don't count harder in December. They count a little all year.

Set min/max levels. Give each part a minimum quantity in the warehouse and on each van. When stock drops below it, it gets reordered or restocked before a tech is standing in a basement without the part.

Run cycle counts. Instead of counting everything once a year, count a slice every week or month. High-value and fast-moving parts get counted more often, slow movers less. By December, most of your stock has already been checked recently and the year-end count becomes a confirmation, not an investigation.

Fix the recording habit. If your variances pointed to parts going into jobs unrecorded, that's the thing to fix in January. For more on building the habit, see our guide on what inventory management looks like in field service.

Year-end inventory count checklist

Print this and pin it up in the warehouse.

• ☐ Count date set and shared with the team
• ☐ Cut-off time set for receiving, transfers and job parts
• ☐ All job parts before cut-off recorded against their jobs
• ☐ Late deliveries boxed and tagged "after count"
• ☐ Count teams paired, nobody counting their own van alone
• ☐ Blind count sheets or tags printed for every bin, shelf and van
• ☐ Van count schedule staggered across shift ends
• ☐ Photos taken of each bin and drawer before counting
• ☐ Two-person count and initials on high-value lines
• ☐ Non-stock items (customer parts, cores, personal tools) set aside
• ☐ Recount threshold agreed and applied
• ☐ Variances grouped by part and by van, patterns noted
• ☐ Write-offs approved by the right person, with reasons
• ☐ Ending value, purchases by supplier and parts consumed on jobs pulled
• ☐ Package sent to the accountant
• ☐ Min/max levels and a cycle count schedule set for next year

How FSM Navigator handles truck stock

Inventory in FSM Navigator is an Enterprise feature. It tracks warehouses and bins alongside each technician's van stock. When a tech uses a part on a job, it comes out of that tech's van stock and is recorded against the job, which closes the gap most variances come from. Techs can move their own van stock to another tech with a QR transfer, so swaps in a parking lot don't vanish from the books.

For counting, you can run cycle counts through the year. When you open a stock audit, the counted locations are frozen: transfers, adjustments and receiving into those locations are refused until the audit closes. Each count shows the counted quantity and the variance, so you can see what needs a recount.

Set a minimum quantity per part and anything below it lands on a Low Stock list, with an email alert. Techs see low-stock flags on their own van stock.

At year end, the Year-End Tax tab gathers ending inventory value, purchases by supplier and the cost of parts consumed on jobs for the year you choose. It's an aid for your accountant, not tax advice. If you're comparing options for your trade, our posts on HVAC inventory management software and plumbing inventory software go deeper, and the inventory audit feature page walks through the audit itself.

If you want your next count to start from van stock that's already been tracked job by job, try Enterprise free for 14 days.