If you run a factory in Western Melbourne, the number that actually matters isn’t your bank balance, it’s what it costs you to make one unit of whatever you sell. Manufacturing accounting is the discipline of getting to that number properly: tracking raw materials, work in progress and finished goods separately, allocating labour and overhead to the right jobs, and valuing stock in a way that holds up at tax time. Most manufacturers we talk to in Truganina, Derrimut, Laverton and Werribee are doing some version of this by instinct. Very few are doing it in a way that would survive a proper audit or tell them, with confidence, which product line is actually paying the bills.

 Why a Normal Set of Books Doesn’t Work Here

A service business can get away with a tidy bank reconciliation and not much else. There’s no stock to speak of, and cost of sales is basically just wages. Manufacturing doesn’t work like that. The moment you buy $20,000 worth of steel and it sits in the warehouse for six weeks before it goes anywhere near a job, your bank feed has no idea what to do with it. If it just gets coded as an expense the day it’s paid for, your profit for that month looks terrible, and the following month, when the steel finally turns into product and gets sold, profit looks artificially brilliant. Neither number means anything.

We see this constantly with businesses in the $2 to $10 million turnover range around the western suburbs. The order book is full, the factory is loud and busy, and the owner still can’t tell you with any real confidence whether the big contract they signed last quarter is actually making money or quietly draining it.

Here’s roughly how the two types of business differ on paper:

 The Four Things You Actually Need to Track

There’s a lot of jargon around this, but it really comes down to four buckets.

 Direct Materials

Direct materials are whatever physically becomes part of the product, steel, timber, packaging, chemicals, whatever your line of work involves. You work out how much you actually used in a period by taking your opening stock, adding what you bought, and subtracting what’s left at the end. Sounds simple, and it is, except for one wrinkle: how do you decide which units of stock you “used” when prices move around during the month? Most businesses pick either FIFO (you used the oldest stock first) or a weighted average. It genuinely changes your reported profit, especially when material prices are climbing, because FIFO tends to flatter your margin compared to weighted average. Pick one and stick with it, because switching between periods makes your numbers impossible to compare.

 Direct Labour

Direct labour is the wages of the people actually on the floor making the thing, including shift loadings and overtime. This is where things get messy in practice, because a lot of factories have a supervisor or a leading hand who splits their time between actually running a machine and doing admin in the office. If that person’s whole wage gets dumped into one category, your labour cost per unit is wrong, and you won’t know it’s wrong until the numbers stop making sense.

 Factory Overhead

Factory overhead is everything that supports production but can’t be pinned to one specific job, rent on the factory, depreciation on the machinery, utilities, the quality control guy’s salary, maintenance. Since you can’t trace it directly, you allocate it using some consistent rate, usually based on machine hours or labour hours. Say your overhead for the month comes to $95,000 and the factory clocked 1,900 machine hours. That’s $50 an hour. Every job then picks up its share of overhead based on how many machine hours it actually used. It’s not perfect, nothing about overhead allocation is perfect, but it’s a lot more honest than guessing.

Then there’s work in progress, WIP, which is the one that trips almost everyone up.

Why WIP Confuses Everyone (And Why It Matters More Than You’d Think)

Here’s something people search for constantly and rarely get a straight answer on: is “work in progress” the same as “work in process”? Practically, in most conversations, yes. But there’s a subtle difference worth knowing. Work in process tends to describe shorter, repeatable production runs, the sort of thing you’d see on a packaging line in Campbellfield. Work in progress usually gets used for longer, custom, milestone-based jobs, like a big fabrication order that takes six weeks and gets billed against stages of completion.

Either way, accounting treats it the same. WIP sits on your balance sheet at whatever it’s cost you so far, materials plus labour plus its share of overhead, until the job or the batch is actually finished. At month end you either do a physical count or estimate how far along everything is, and that closing number becomes next month’s opening number.

If you ignore WIP entirely and just treat costs as expenses the day they’re incurred, your monthly profit will bounce around for no reason anyone can explain. This is genuinely the single biggest cause of “why does our profit look different every month when nothing’s changed” conversations we have with manufacturing clients.

Let’s Actually Work Through an Example

Numbers explain this better than definitions do. Say there’s a fictional metal fabricator out in Derrimut, we’ll call them Westgate Fabrication, and we’re looking at their July numbers. To be clear, these figures are made up purely to illustrate the mechanics, not real client data.

That $593,000 is what it cost Westgate to actually finish goods during July, not what they spent, what they finished. Divide that by units completed and you’ve got a real cost per unit, something you can actually price against instead of guessing off last year’s quote.

It doesn’t stop there, though. Say Westgate had $60,000 of finished goods sitting in the warehouse at the start of July and $48,000 left at the end. Cost of goods sold is COGM plus opening finished goods minus closing finished goods: $593,000 + $60,000 − $48,000, which comes to $605,000. COGM tells you what was made. COGS tells you what was sold. People use these two terms interchangeably all the time, and it’s usually harmless, until it isn’t, because pricing decisions based on the wrong one can quietly erode margin for months before anyone notices.

 One More Thing People Mix Up: Manufacturing Profit vs Gross Profit

If a factory sells its own finished goods to its own sales division at a set internal price rather than at raw cost, the gap between that internal price and the actual production cost is sometimes called manufacturing profit. It’s an internal check on whether the factory itself is competitive, essentially asking “could we have bought this cheaper externally than we made it ourselves.” Gross profit is a different animal entirely: what’s left after an actual external customer pays you, minus your cost of goods sold. Most manufacturers we work with in the western suburbs don’t need to bother separating the two, it’s really only relevant once you’ve got multiple divisions transferring goods internally, but it’s worth knowing the distinction exists so you’re not caught out if an accountant or a lender uses the term loosely.

 What to Actually Watch Every Month

You don’t need forty reports. A handful, reviewed properly, tells you almost everything:

 The Mistakes We See Over and Over

Materials get expensed the day they’re bought instead of held as stock. WIP gets ignored completely, which is why profit swings wildly for no clear reason. Indirect labour, supervisors, maintenance staff, gets mixed into direct labour, which quietly inflates the apparent cost of production. Overhead gets applied as one flat rate across products that are nothing alike, so some products look more profitable than they are and others look worse. Jobs get priced off last year’s number because nobody’s recalculated actual cost per unit. And export paperwork gets missed, which matters a lot more than people think, because a lot of Western Melbourne manufacturers are moving freight through the Port of Melbourne and along the Western Ring Road, and a GST-free export sale without proper documentation can turn into a taxable one the moment the ATO looks closely.

 Job Costing or Process Costing

 When Job Costing Fits

If you’re making custom, one-off, or made-to-order product, cabinet makers and fabricators around Brooklyn and Tottenham are a good example, job costing is what you want. Every job gets its own number, and materials, labour and overhead all get tracked against it individually.

 When Process Costing Fits

If you’re running a continuous line of near-identical product, more common in food processing or packaging setups around Campbellfield and Ravenhall, process costing suits better, where cost gets tracked per stage of production and spread across equivalent units rather than per job. Using the wrong method for how you actually produce is a quiet reason product-level margins can look wrong even when the overall numbers add up fine.

 When It’s Time to Bring in More Than a Bookkeeper

A good bookkeeper keeps your numbers accurate. But there’s a point where accuracy alone isn’t enough, and we see it happen the same way most times. Revenue is growing but nobody can quite explain where the margin is going. There are multiple product lines and no clarity on which ones are actually worth keeping. The business is gearing up for expansion, a bank facility, or outside investment, and the financials need to hold up to scrutiny they’ve never faced before. Or, the classic one, the order book is full and cash still feels tight, because cash is converting into materials and stock faster than it’s converting back.

That’s usually the point where a Fractional CFO  makes more sense than hiring a full-time executive. You get proper cash flow forecasting, scenario modelling, and investor-ready reporting, scaled to what the business actually needs, without carrying a $200,000 salary on the books.

Where ZTOA Fits In

We work with manufacturing businesses across Western Melbourne on exactly this, structuring the books around raw materials, WIP and finished goods properly, keeping inventory valuation and reporting aligned with AASB standards, building out budgets and cash flow models that actually reflect how a factory operates, and stepping in as a fractional CFO once a business outgrows what routine bookkeeping can tell them.

If you genuinely don’t know the margin on your best-selling product right now, that’s usually the honest place to start. Get in touch with ZTOA Consulting for a free consultation.

 Frequently Asked Questions

 What is a manufacturing account?

An internal report tracking direct materials, direct labour, overhead and WIP to show the true cost of production for a period, kept separate from the standard financial statements.

 Is work in progress the same as work in process?

They’re often used interchangeably. Work in process usually describes shorter, repeatable production runs, while work in progress tends to describe longer, custom, milestone-based jobs. Both are accounted for the same way.

How do you value closing WIP?

Either a physical stocktake at period end, or an estimate of percentage completion, applying the materials, labour and overhead costs incurred so far.

What’s the difference between cost of goods manufactured and cost of goods sold?

COGM is what it cost to finish production during a period. COGS is what it cost to produce what was actually sold, adjusted for the change in finished goods stock. They’re rarely the same figure.

 Do manufacturers in Melbourne need special accounting software?

Not always. Xero handles a lot of small manufacturers fine once inventory tracking is properly set up. Larger or more complex operations sometimes need a dedicated inventory or ERP add-on.

 Are exports from Western Melbourne manufacturers GST-free?

Generally yes, provided goods leave Australia within the required timeframe and there’s proper export evidence on file. Without the paperwork, that concession can turn into a taxable sale under review.

 When should a manufacturing business bring in a fractional CFO?

Once revenue growth starts outpacing margin visibility, or cash flow forecasting and investor-ready reporting start needing more than routine bookkeeping can provide.