What it means
Inventory is usually one of the largest assets a product business owns, and it is also one of the easiest to get wrong. Items get damaged, stolen, mislabelled, shipped without being booked out or received without being booked in.
A count is the only reliable way to test the records against reality. There are two broad approaches.
A full count, sometimes called a wall-to-wall count, pauses operations and counts everything in one go, often at the financial year end. Cycle counting spreads the work across the year by counting a few product groups each week, with fast-moving and high-value lines counted more often.
Good counts follow a set procedure. Stock movements are frozen or tightly controlled, items are tagged as they are counted, two people count independently, and anything that does not match is recounted before the books are touched.
Auditors often attend the year end count to observe it, because inventory value feeds straight into cost of goods sold and therefore into profit. Once the count is complete, the counted quantity is multiplied by the unit cost to give a counted value, and the gap from the book value is posted as an adjustment.
A shortage is called shrinkage and is normally charged to cost of goods sold, while a surplus usually points to unrecorded receipts or counting errors. Either way, the adjustment lands in the profit and loss account for the period.
A count confirms what is physically present, not what it is worth. Obsolete, damaged or slow-moving stock can be counted perfectly and still need a write-down to net realisable value (the price it can realistically be sold for, less the costs of selling it).
Counting and valuing are two separate steps, and both have to be right.
In practice
Real-world examples
Example 1
A wholesale grocer with 6,000 product lines cannot close its warehouse for a week. It counts one aisle every morning on a rolling schedule, so every line is counted at least once a year and the fast sellers are counted monthly. Small errors are caught while the trail is still fresh.
Example 2
A jewellery retailer counts every ring, watch and chain across its 12 stores on the last night of the financial year, with two staff members per count team. The auditors sample-check the tags the next morning. The value of the stock is high enough that even a small unexplained gap would draw questions.
Example 3
An electronics manufacturer counts raw materials, half-finished boards and finished units separately. The count of half-finished boards reveals 400 units that the system thought were still on the line but had been scrapped weeks earlier. Finance writes them off and operations tightens the scrap booking process.
Think of it
An inventory count is like checking your wallet against your bank app. Your app might say you have fifty pounds, but counting the actual notes prevents nasty surprises.
Formula
Calculation
Inventory count variance = Counted value - Book value
Suppose a distributor's system shows 2,400 units of a product at a cost of $25 each, so the book value is 2,400 x 25 = $60,000. The physical count finds only 2,340 units, so the counted value is 2,340 x 25 = $58,500. The variance is 58,500 - 60,000 = -$1,500, a shortage. As a share of book value that is 1,500 / 60,000 = 2.5%, and the $1,500 is written off to cost of goods sold.Case study
Seen in the real world
Fernwick Cycle Parts is an illustrative, fictional distributor of bicycle components. For years it counted its warehouse once a year, and every year the adjustment was a surprise that landed in the final month of the accounts. The finance manager noticed that the shrinkage figure was drifting upwards but had no way to tell where it came from.
She moved the company to weekly cycle counts, starting with the 300 highest-value lines. Within a quarter the counts showed that most of the gaps came from one door where returns were put back on the shelf without being booked in. Fixing that single process cut the annual shrinkage charge from roughly $90,000 to roughly $30,000, and the year end count became a confirmation rather than a shock.
Watch out
Common mistakes
- Treating the count as a once-a-year accounting chore, so errors build up for twelve months before anyone sees them.
- Letting the people who receive or issue stock also count it, which removes the independent check that makes the count meaningful.
- Adjusting the records straight away without investigating why the difference arose, so the same error keeps recurring.
Questions
People also ask
How often should a business count its inventory?
It depends on the value and speed of the stock, but most businesses do at least one full count a year and use cycle counts for high-value or fast-moving lines in between.
Does a count adjustment affect profit?
Yes, a shortage is normally expensed through cost of goods sold, which reduces profit, while a surplus increases it.
What is the difference between an inventory count and an inventory valuation?
A count establishes how many units exist, whereas a valuation puts a dollar cost on those units using a method such as first in, first out.