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Compare trade working capital as a share of sales across industries. See which balances to include, a worked comparison, and how operating cycles change the cash a business needs.
Working capital by industry is most useful when trade balances are compared as a share of sales: trade receivables plus inventory minus trade payables, divided by annual sales. That shows how much operating funding supports the revenue base. Differences in production time, customer collections and supplier terms matter more than a single cross-industry average.
This article uses a narrow trade measure:
Trade working capital = Trade receivables + Inventory − Trade payables
Trade working capital as a share of sales = Trade working capital / Annual net sales
This differs from balance-sheet working capital. The SEC's guide to financial statements defines that broader measure as current assets minus current liabilities. Cash, taxes, short-term borrowing and other current balances can make the broader amount quite different. The existing working-capital formula guide covers that distinction in detail.
For the trade comparison, take customer receivables from the receivables aging report, inventory at carrying cost from the inventory ledger, and supplier payables from the payables aging report. Reconcile each export to its general-ledger control account. Use annual net sales from the same entity or segment, after returns and allowances.
Write down whether receivables are net of credit-loss allowances and whether inventory is net of reserves. Apply the same policy across the comparison. A ratio cannot correct inconsistent accounting boundaries.
Manufacturing can tie up cash before there is a finished item to invoice. Raw materials become work in process and then finished goods. The Census Bureau's manufacturing definitions distinguish those inventory stages and define total inventory as stocks regardless of their stage of fabrication. Use the stages to explain the balance; do not assume every manufacturer has the same production cycle. The separate manufacturing working-capital guide shows the plant-level calculation.
A distributor may buy finished goods without carrying production work in process. Its requirements still depend on stocking breadth, replenishment time and how much of the stock suppliers finance. A business that sells quickly on immediate payment can carry little receivables even while its suppliers remain unpaid.
A service business may hold little physical inventory but have substantial customer receivables. Work performed before billing may also require funding, although unbilled balances need their own consistent definition. Keep those outside this narrow trade comparison unless every segment includes them on the same basis. See working capital for service businesses for that separate operating question.
These are explanations to test against the exports. They are not a ranking of industries or evidence that a high balance is automatically wasteful.
The following is an illustrative comparison of three US operating segments, not published industry benchmarks. Every balance is at September 30, 2026; sales cover the twelve months ending on that date. All balances use USD and the same net carrying-value policies.
| Segment | Annual net sales (USD) | Trade receivables (USD) | Inventory (USD) | Trade payables (USD) | Trade working capital (USD) | Share of sales |
|---|---|---|---|---|---|---|
| Manufacturing | 12,000,000 | 1,800,000 | 2,400,000 | 900,000 | 3,300,000 | 27.5% |
| Distribution | 20,000,000 | 2,200,000 | 3,000,000 | 2,400,000 | 2,800,000 | 14.0% |
| Business services | 10,000,000 | 1,600,000 | 0 | 400,000 | 1,200,000 | 12.0% |
| Total | 42,000,000 | 5,600,000 | 5,400,000 | 3,700,000 | 7,300,000 | 17.4% |
Manufacturing ties up $1,800,000 + $2,400,000 − $900,000 = $3,300,000. Dividing by $12,000,000 gives 27.5%. Distribution holds more inventory dollars, but its larger sales base and supplier funding leave a lower share of sales committed.
With segment in column A and the other columns following the table, calculate the first segment's trade balance and percentage as:
F2=C2+D2-E2
G2=F2/B2
Fill down through the segments and format column G as a percentage. The total percentage is:
=SUM(F2:F4)/SUM(B2:B4)
The proof is both an amount and a ratio. The balance totals reconcile as $5,600,000 + $5,400,000 − $3,700,000 = $7,300,000. That divided by $42,000,000 is 17.380952%, displayed as 17.4%. All percentages are rounded to one decimal place only after calculating from the unrounded amounts; averaging the displayed segment percentages does not give the group measure.
The manufacturing segment deserves a review of inventory stages and supplier terms before a general instruction to cut working capital. The services segment calls for a receivables review. Distribution calls for a check of whether its supplier credit is contractual and current, rather than late payment temporarily improving the ratio.
A constant-ratio growth scenario can estimate an incremental requirement. It is an assumption, not a forecast:
| Manufacturing scenario | Annual sales (USD) | Assumed trade working-capital share | Trade working capital (USD) |
|---|---|---|---|
| Current | 12,000,000 | 27.5% | 3,300,000 |
| Illustrative growth case | 13,200,000 | 27.5% | 3,630,000 |
| Increase | 1,200,000 | Unchanged | 330,000 |
The additional requirement is $1,200,000 × 27.5% = $330,000. It assumes the same balance relationships; changed customer terms, production timing or supplier credit would require a different scenario. It also does not establish when cash must be available. Monthly purchasing and collection schedules answer that timing question.
NYU Stern's working-capital ratios by US sector provide separate receivables-to-sales, inventory-to-sales and payables-to-sales columns. Those component measures are useful starting points for investigating differences. Check the population, measurement date and working-capital definition before placing any external figure beside your own.
Keep denominator questions separate. A current-ratio comparison by industry measures current assets relative to current liabilities. A working-capital turnover comparison asks how much sales a working-capital balance supports. Neither is the trade-balance share of sales defined here.
Finance owns the definition, reconciliation and group calculation. Operations owns stock and production explanations; credit owns collection actions; procurement owns supplier terms; treasury uses the resulting timing assumptions for funding. Agree on those responsibilities before setting targets.
Bring a file or Google Sheet containing segment sales, trade receivables, inventory and trade payables. Covirage maps the columns, and its tools compute and check balances and shares of sales; the external AI model explains the result with every figure traced to its rows. Create a free Covirage account and bring a sample of your own export.
See how Covirage supports finance teams.
Businesses that carry inventory through long production cycles and wait for customers to pay can need more trade working capital relative to sales. The actual requirement depends on supplier credit, order patterns and accounting policies. An industry label alone does not establish a cash requirement.
Trade working capital can be negative when trade payables exceed receivables plus inventory. Fast customer collections and longer supplier terms can produce that pattern. Check whether the terms are sustainable and whether balances are overdue before treating the negative amount as an operating advantage.
Include cash when measuring balance-sheet working capital as current assets minus current liabilities. Exclude it from the narrower trade measure used here. Mixing the definitions makes a cash-rich business appear to need more operating funding even when its collection and inventory processes are unchanged.
Use closing balances for a particular funding date, or average balances to study a typical operating requirement. Apply the same choice to every business being compared. Seasonal companies usually need a monthly view as well, because an annual average can hide the funding peak.