The Cost That Was Never Work in Progress

This is the article for whoever prepares your accounts. The operational picture — what production looks like in the system — is the easy half. The accounting underneath it is where a stock system built for retail goes wrong for a manufacturer, in two specific ways a manufacturer meets in their first month. It is worth knowing both, because they are the two entries to check in any system you evaluate, ours included.

What AWRA does about them is not a manufacturing accounting module. It is narrower and more honest than that: the ledger keeps part-finished work on the balance sheet where it belongs, and it refuses to hide the difference between what a job consumed and what its output was valued at. That difference is the subject of the second half of this article.

Material issued to a job is work in progress, not an expense

The retail entry on an approved stock issue is expenses debited, inventory assets credited, with no exception. For a retailer that is broadly right. For a manufacturer it is wrong in a specific way: the material has not been consumed in the sense the accounts claim. It has been transformed, and it is sitting on the factory floor as part-finished goods you still own.

AWRA has a Work in Progress account, and an issue charged to a job debits it instead of expenses. When output is received back into stock against that same job, the receipt credits Work in Progress. Material moves from raw inventory into WIP, stays an asset while it is being worked on, and leaves WIP as finished stock — which is what a manufacturing system is supposed to do.

Why it matters at month-end: where issues are expensed, part-finished production is worth nothing on paper, so closing the books mid-run — and a mill or a bakery is always mid-run — understates profit by the full cost of everything on the floor and understates total assets by the same amount. The worst books belong to the busiest month, which is the least convenient time to be reading your own numbers wrong.

Expensing on issue is a distortion that scales with how busy you are. A factory with nothing in progress has accurate books; a factory running flat out has the worst ones.

Your own output does not arrive as a debt

A system that treats every receipt as a purchase posts finished goods back onto stock as inventory assets debited, accounts payable credited. The debit is right — the goods are an asset. The credit is not: accounts payable is money owed to a supplier, and there is no supplier. You made the goods. It creates a payable to nobody that grows with every production receipt, and because it sits inside the same balance as real supplier debt it is invisible — the creditors listing simply stops agreeing with the invoices you actually hold, by the cumulative value of everything you have ever manufactured.

In AWRA the credit is derived from where the stock actually came from. A delivery against a purchase order or a procurement request still credits accounts payable, because somebody genuinely is owed. Output received against a job credits Work in Progress, which is the entry that relieves the job. A receipt with neither — found stock, an opening balance, a customer return — credits a separate Inventory Received Clearing account, so the value is visible as its own balance you can journal out rather than buried in what you owe your suppliers.

Note the ordering, because it is deliberate: a supplier document beats a job. Material bought for a job is still a purchase, and it only becomes work in progress later, when somebody issues it from the store.

What is left: the two figures do not agree, and you can see it

The remaining problem is not a defect so much as the consequence of running production as a job rather than a build: on a job, the cost going in and the value coming out are computed independently. (An assembly order does not have this problem — it values the finished item from the actual cost of the components it consumed — but it consumes the bill's quantities in one step, which suits a fixed recipe rather than a variable-yield run.) The issue is valued at the unit cost stamped on the line when the stock left the store — the same figure the job costing report uses, so the ledger and the job report agree about the cost of the same movement. The receipt, though, is valued at whatever unit cost is typed on its check-in line — and left blank, at the finished item's current average cost, a figure built from earlier receipts that has nothing to do with this run.

So the two numbers differ, and the difference stays behind in Work in Progress after the job's output has been received. That residual is not an error and it is not netted away. It is the variance between what a job consumed and what its output was priced at, and the honest thing to do with it is show it: there is a Work in Progress by Job report that lists what each job has taken in, what has come back out, and what is still sitting there — with a view for exactly the jobs whose output has arrived and which still did not clear.

The residual can be negative, and a negative one is the more informative case. It means the output was valued above what the job consumed, and the usual reason is labour: the figure the output came in at — a running cost from earlier receipts, or one typed from a costing that counts time — includes work the ledger never capitalised, because time costed to a job still sits in payroll expenses and nothing carries it into inventory value.

How far from correct is this, honestly

The routine that is left

The standing correcting journals a manufacturer usually keeps for these two postings are not needed, because the postings are right at source. What is left is short, and it is review rather than correction.

1. Make sure issues are coded to jobs

   This is the whole mechanism. An issue with no job on it is expensed, and no amount of month-end work recovers that as work in progress after the fact. If your storekeeper is issuing against a reason but not a project, fix that before anything else on this list.

2. Read the WIP by Job report at close, and ask about the residuals

   Jobs still carrying value are legitimately in progress. Jobs whose output has been received and which still did not clear are the interesting ones — the report has a view for exactly those. A large negative residual usually means the cost the output came in at includes labour the ledger never capitalised; a large positive one usually means scrap, or output received at a price set years ago.

3. Type the run's cost on the check-in

   Work out the job's cost over its good output and type it on the check-in line before approving it; leave it blank and the output falls back to the item's current cost. That receipt cost blends into the moving-average cost, which feeds margin on every subsequent sale, so getting it right at the receipt is the difference between one correct number and a quarter of wrong margin reporting.

One thing not to do: do not try to fix the finished-goods valuation by receiving at whatever cost the item happens to carry and correcting it in a journal. The receipt's cost blends into the moving average, which feeds your margins on every subsequent sale of that item, and a journal does not move it. Get it right on the check-in line, or your gross margin reporting is wrong for reasons that have nothing to do with this.