When Cost Lands in the Wrong Month: Fixing Inventory Costing and a Seven-Month Cash Cycle

Company

MPS Acoustics

Headquarters

Plano, Texas

Sector

Acoustic ceilings, wall panels & sound masking

Supply chain

Imported materials, US manufacturing

Systems

QuickBooks → Zoho

Engagement

Fractional CFO & outsourced accounting

Key Takeaways for Manufacturers

• Cost recognition timing is not a technicality. If cost is relieved when an assembly is built instead of when product ships, revenue and its cost land in different periods and monthly margin becomes meaningless.
• Freight is product cost, not overhead. Inbound ocean freight and duty belong in landed cost; outbound freight is a cost of the sale. Leaving both in operating expense makes every margin look better than it is.
• Custom-configured products break standard costing. When every order can carry its own dimensions, the BOM structure has to handle variation by design rather than as an exception.
• Importers don't have a cash flow problem, they have a cash cycle problem. Paying a supplier before a container sails means the constraint is elapsed months, not monthly net income.
• The right system is the smallest one that models your operation. Too small and you generate adjustments to force the books back into agreement; too large and you pay for capability you can't use.

Who is MPS Acoustics?

MPS Acoustics is an acoustic solutions manufacturer headquartered in Plano, Texas. The company designs and produces acoustic ceiling baffles, clouds and tiles, slatted and layered wall panels, hanging and freestanding room dividers, integrated LED baffles, and sound masking systems — controllers, speakers, and sensors.

Its products are specified largely by architects and designers, commercial real estate teams, facilities groups, and general contractors, and appear in corporate interiors for organizations including American Express, Apple, Boeing, Google, Oracle, and Visa. The company states that "all of our solutions are designed and made sustainably in the USA," and offers custom size and shape options as a standard part of the catalog rather than a special order.

Two features of that business model drive everything that follows. First, the raw material is sourced overseas, so it must be paid for long before it can be sold. Second, because customization is the norm rather than the exception, cost accounting cannot rely on a fixed catalog of repeatable products.

Why had QuickBooks stopped working?

QuickBooks is capable software for a great many businesses. It is not built for a manufacturer that carries raw materials, converts them through assemblies, and needs cost recognized at the moment of sale.

Three limitations mattered at MPS.

It could not model the inventory properly. Raw materials, work in process, and finished goods behave differently, and a company importing material and converting it needs all three tracked distinctly. Without that, inventory value becomes an estimate that drifts from reality until something forces a correction.

It could not handle bills of material at the required level. A configured panel has its own dimensions and therefore its own material consumption. The costing structure has to be built to accommodate that, and if it isn't, the cost assigned to a product is a guess dressed as a number.

It relieved cost at the wrong moment. This was the most consequential of the three, and it deserves its own explanation.

Should cost of goods be recognized when an assembly is built or when the product ships?

When the product ships — because that is when the revenue is earned.

The matching principle is the whole point of accrual accounting: the cost of a thing should appear in the same period as the revenue from selling it. When a manufacturer builds an assembly, no sale has occurred. The company has converted one kind of inventory into another. Value has moved from raw materials to finished goods; it has not left the balance sheet.

If the system instead treats the build as the cost event, cost hits the income statement in the month of production while the revenue arrives in the month of shipment — which may be the following month, or two months later for a project-driven business waiting on a construction schedule. The consequences are immediate and confusing:

• A month with heavy production and light shipping looks unprofitable when it isn't.
• A month with light production and heavy shipping looks extraordinarily profitable when it isn't.
• Gross margin by month oscillates for reasons unrelated to pricing or efficiency.
• Nobody can tell whether a product is actually earning money, because product-level cost and product-level revenue never meet.

At MPS this was the mechanism behind the "random" adjustments. The books drifted from the operation, and periodically someone had to force them back into agreement. Those corrections were never arbitrary — they were accumulated error surfacing all at once, which is exactly why they felt unpredictable.

Is freight part of cost of goods sold or an operating expense?

Both, depending on direction — and getting this wrong distorts margin in a way that's easy to miss.

Inbound freight and duty are product cost. The cost of getting material to your facility is part of what the material cost you. Under landed-cost accounting it is capitalized into inventory and released as cost of goods when the product sells. Leaving it in operating expense understates inventory value and overstates gross margin.

Outbound freight is a cost of the sale. Shipping finished product to the customer is not a period overhead; it is an expense attributable to that specific transaction and it belongs where you can see it against that revenue.

For MPS the stakes were unusually high. Acoustic panels and baffles are physically large and light, which is the worst possible combination for shipping economics — freight is charged on the space consumed rather than the weight, so bulky low-density product carries disproportionate freight cost. Material arrives by ocean container from overseas and finished product goes out to job sites. With both legs sitting outside product cost, every margin figure the company looked at was optimistic, and the products that looked best on paper were not necessarily the ones worth making.

What is the operating cash cycle, and why did it matter so much here?

The operating cash cycle — also called the cash conversion cycle — is the elapsed time between paying for inventory and collecting cash from the customer who eventually buys it. Conventionally: days inventory outstanding, plus days sales outstanding, minus days payable outstanding.

For most businesses it's a metric. For an importer who prepays, it's the binding constraint on the entire company.

Here is the sequence MPS was actually living with:

• Day zero — pay the supplier in full. Overseas material is paid for up front. A single order can be a six-figure outlay against material that isn't yet in existence, let alone in the building.
• Two to five months — the container crosses. Two months was the plan. During the shipping disruptions of that period, four or five months happened. The cash is already gone; the material is on a boat or waiting for a berth.
• Then production. The material arrives as raw stock and still has to be manufactured into finished, often custom-configured product in Plano.
• Then shipment. Product goes out to the job site, frequently on the customer's construction schedule rather than the company's.
• Then receivables. The invoice is issued, and commercial construction terms being what they are, payment follows in its own time.

Add it up and the money can be out of the business for well over half a year on a single cycle.

Cash left the building in month one and came back in month seven. Nobody could see it happening.

This is why watching the bank balance is not a cash strategy for a company like this. The balance is a lagging indicator of decisions made months ago. By the time it looks uncomfortable, the purchase order that caused it has long since been placed, the container is somewhere at sea, and the available responses are limited to the unpleasant ones.

Understanding the cycle changes what management is able to do with it. Once the elapsed time is measured rather than felt, order timing, batch sizing, supplier terms, and collection effort all become levers on the same number — how long your money is unavailable. That's a strategic conversation. Without the measurement, it isn't a conversation at all.

What did Accounovation actually do?

1. Migrated from QuickBooks to Zoho

The goal wasn't a bigger system; it was one that could model the actual operation — raw materials through assemblies to finished goods, with cost recognition tied to the correct events. We handled the transition and the design of how the business would be represented inside it.

2. Helped the manufacturing team build the bills of material

The people who know what actually gets consumed on the floor are the people making the product, so this was collaborative by design. We defined the costing structure and worked alongside the manufacturing team as they built out the assemblies and BOMs — which also means the knowledge stayed with the team that uses it daily.

Because custom sizing is standard at MPS, that structure had to treat variation as normal rather than exceptional, so a configured product carries its own genuine material and labor content instead of inheriting an average.

3. Moved cost recognition to shipment

Cost of goods now lands when product ships to the customer rather than when an assembly is completed in the shop. Revenue and its associated cost appear in the same period — the precondition for any margin figure being worth reading.

4. Reclassified freight into product and sale cost

Inbound ocean freight and duty were capitalized into landed product cost; outbound freight was assigned to the sale. On bulky, low-density product this materially changed the apparent profitability of individual items — and therefore what the company chose to promote and how it priced.

5. Established true product margin reporting

With costing structure, timing, and freight all corrected, product margin became a number management could act on: which products earn, which don't, and which only earn at certain volumes or configurations.

6. Built a rolling 13-week cash flow forecast

Modeled on how money actually moves through this business: supplier prepayments, container transit, production, shipment, and collection. Leadership could see a cash position forming weeks ahead rather than discovering it in a bank balance.

7. Measured and managed the full operating cash cycle

We quantified the elapsed time from supplier payment through inventory on hand through receivables to cash returning, and made it a managed metric rather than an unexamined fact of life.

8. Incorporated seasonality into the forecast

Demand in commercial interiors follows construction and corporate spending patterns, which means the cash troughs are largely predictable. We built that into the forecast so leadership gets months of advance warning — enough lead time to change order timing or arrange financing on favorable terms rather than urgent ones.

9. Established consistent, professional financial reporting

Statements now arrive on a dependable schedule, prepared the same way each period, reconciled, and free of surprise adjustments. That consistency is what makes financials usable — by management for operating decisions, and by outside stakeholders such as the company's lender.

What changed for MPS Acoustics

The company knows its product margins now — with freight in the right place and cost recognized in the period the sale occurs, so the numbers reflect the economics rather than the timing of production runs. The large month-end adjustments are gone, because the system now represents the operation instead of approximating it and correcting later.

On cash, MPS plans against a measured operating cycle with a rolling 13-week forecast and seasonal troughs visible months in advance. Decisions about when to place a container order or how to sequence production are made with the cash consequence known rather than discovered.

And the reporting itself is dependable. Statements are consistent period to period, which means everyone who relies on them — management first, and the company's lender as well — is working from the same trustworthy picture. That reliability has strengthened the banking relationship and supported better terms.

Does your business have the same problems?

Signals worth checking against your own numbers:

• Your month-end close produces adjustments that nobody can fully explain.
• Gross margin swings month to month without a corresponding change in pricing or efficiency.
• You couldn't state, to the dollar, what a specific product costs to make and deliver.
• Freight sits in operating expense rather than in product and sale cost.
• Your accounting system relieves cost when you build rather than when you ship.
• You pay overseas suppliers up front and have never measured how long your cash is actually gone.
• Your seasonal cash low arrives as a surprise every year.

Frequently asked questions

When has a manufacturer outgrown QuickBooks?

Usually at the point where inventory stops being a simple count and starts being a process. Specific signals: you carry raw materials, work in process, and finished goods and need them tracked separately; you build products from bills of material; your products are configured or customized so BOMs vary by order; you need landed cost including freight and duty capitalized into inventory; you need cost of goods recognized at shipment rather than at build; or you're producing recurring adjustments to force inventory and cost of sales back into agreement. Any two of those together generally mean the system is now the constraint.

Should cost of goods sold be recognized when an assembly is built or when the product ships?

When it ships, because that's when the revenue is earned and accrual accounting requires cost to be matched to the revenue it produced. Building an assembly converts raw materials into finished goods — value moves within the balance sheet but nothing has been sold, so no cost should reach the income statement. Recognizing cost at build produces months that look unprofitable because you produced heavily, and months that look excellent because you shipped from stock, with margin swinging for reasons unrelated to how the business is actually performing.

How do you cost custom-configured products when every order has a different bill of material?

By building the costing structure around the configuration logic instead of around a catalog of fixed SKUs. The practical approach is to define material consumption parametrically — by area, linear footage, or the dimensional drivers your products actually vary on — so a configured item computes its own material content, then layer standard labor and overhead rates per unit of production and add landed material cost including inbound freight. The objective isn't perfect precision on any single order; it's a structure where cost scales correctly with configuration so that margin by product family is trustworthy.

Is freight part of cost of goods sold or an operating expense?

Direction determines the answer. Inbound freight and duty are part of what your material cost, so they're capitalized into inventory as landed cost and released to cost of goods when the product sells. Outbound freight to the customer is a cost attributable to that sale and belongs where it can be seen against that revenue rather than buried in period overhead. This matters most for physically large, lightweight products — freight is charged on space consumed rather than weight, so bulky low-density goods carry disproportionate freight cost, and misclassifying it can make an unprofitable product look profitable.

What is the operating cash cycle and how do you calculate it?

It's the elapsed time between paying for inventory and collecting cash from the customer who buys it: days inventory outstanding plus days sales outstanding, minus days payable outstanding. For an importer who prepays suppliers, days payable outstanding is effectively zero or negative, so the cycle is simply the full duration of transit, production, and collection. The number matters because it defines how much working capital the business must hold to operate at a given volume — and it means growth consumes cash, since a larger business has more money in transit at any moment.

Why do importers especially need a 13-week cash flow forecast?

Because the lag between decision and consequence is long enough that intuition fails. When you prepay for material that arrives in two to five months and converts to cash months after that, today's bank balance reflects choices made half a year ago and tells you almost nothing about the position you're heading into. A rolling 13-week forecast built on real timing — supplier prepayments, container transit, production, shipment, collection — turns cash from something you discover into something you plan, and it gives you enough lead time that your options are still good ones.

How should a manufacturer plan for seasonality?

Quantify it rather than remembering it. Pull several years of monthly revenue, collections, and cash balances to identify the pattern and, more importantly, the lead time — the point at which a decision must be made to affect the trough. Then build the expected seasonal shape into the rolling forecast so the low point appears as a projection months out instead of an event. The benefit isn't avoiding the trough, which is usually structural; it's having months rather than days to respond, which is the difference between choosing your option and taking whatever is available.

What causes unexplained inventory adjustments in a manufacturing business?

Almost always a structural mismatch between the accounting and the operation rather than carelessness. The usual causes: cost recognized at build instead of at shipment; bills of material that don't reflect what is actually consumed; freight and duty excluded from landed cost; scrap, yield loss, and rework not accounted for; work in process not tracked as a distinct stage; and physical counts reconciled infrequently enough that error accumulates. Each produces steady drift between book and reality, which eventually has to be corrected in one visible lump — which is why the adjustments feel random even though they aren't.

Is Zoho a good fit for a small manufacturer with inventory and assemblies?

For many, yes — the relevant test is whether it supports the specific things your operation requires: multi-stage inventory, bills of material at your level of configurability, landed cost, and cost recognition at the right event, at a total cost proportionate to your size. We've moved companies to Zoho from both directions: up from QuickBooks when the accounting couldn't model the manufacturing, and down from enterprise ERP when the system's cost and complexity exceeded what the business could use. The right system is the smallest one that answers your questions reliably.

What size companies does Accounovation work with?

Small and mid-sized manufacturers and product companies — typically owner-led businesses that have outgrown bookkeeping-only support but aren't ready for a full-time CFO. We've worked with more than 200 manufacturing business leaders and delivered over 8,000 hours of fractional CFO services. Accounovation is not a CPA firm; the work is forward-looking financial leadership rather than tax preparation and filing.

The bottom line

If your financials produce large adjustments you can't explain, the problem usually isn't the person doing the accounting — it's that the system was never built to model what your business does. In manufacturing, the two things it most often gets wrong are when cost is recognized and what counts as cost.

And if you import materials, your real constraint isn't your income statement. It's the number of months between paying your supplier and collecting from your customer. Measure it. That number determines what you can afford to do next, and how much working capital growth will require.

And the fix is rarely a bigger system. It's a system sized to model what you actually do — because the alternative is an accounting function that spends its time correcting the record rather than explaining it.