Blog · Finance metrics and formulas · Finance and FP&A teams
Working capital ratios answer different questions about payment capacity, asset use and cash timing. Compare the main measures using one monthly set of balances, with a worked example and reconciliation checks.
The main types of working capital ratios measure short-term payment capacity, operating efficiency and the time cash stays tied up. Current, quick and cash ratios describe a balance sheet; turnover and cash-cycle measures connect those balances with sales, costs and purchases. Reading the families together explains more than choosing one headline ratio.
The CFA Institute distinguishes activity ratios from liquidity ratios: activity measures describe operating efficiency, while liquidity measures address short-term obligations. It also identifies the cash conversion cycle as a liquidity measure rather than a simple ratio.
| Family | Measures to compare | Question answered | Main limitation |
|---|---|---|---|
| Balance-sheet liquidity | Current, quick and cash ratios | What assets stand behind current obligations? | A balance can look healthy without being collectible soon |
| Capital use | Working capital turnover | How much sales activity does working capital support? | A small or negative denominator can mislead |
| Operating timing | Receivable, inventory and payable days | Where is the operating cycle holding cash? | Average days conceal overdue items and uneven activity |
| Combined timing | Cash conversion cycle | How long is the gap between operating payments and collections? | It is an approximation, not a dated cash forecast |
Keep the existing working capital definition and balance-sheet example beside the workbook. The SEC defines working capital as current assets minus current liabilities. An operating version that excludes cash and financing is a different denominator, so name it explicitly.
Consider a US industrial distributor in January 2026, a 31-day month. Its ledger and supporting schedules contain these balances. There are no short-term investments or other current accounts in this example.
| Balance (USD) | December 31, 2025 | January 31, 2026 |
|---|---|---|
| Cash | 120,000 | 150,000 |
| Trade receivables | 420,000 | 480,000 |
| Inventory | 600,000 | 660,000 |
| Prepaid expenses | 30,000 | 30,000 |
| Current assets | 1,170,000 | 1,320,000 |
| Trade payables | 300,000 | 360,000 |
| Operating accruals | 70,000 | 70,000 |
| Short-term debt | 180,000 | 180,000 |
| Current liabilities | 550,000 | 610,000 |
| Working capital | 620,000 | 710,000 |
The January income statement supplies credit sales of $900,000 and cost of goods sold of $620,000. The purchase register supplies credit inventory purchases of $680,000. There are no cash purchases, inventory write-downs or other inventory movements, so opening inventory plus purchases less cost of goods sold equals closing inventory.
For turnover and days, this workbook uses opening and closing balances averaged together. Average receivables are $450,000, average inventory is $630,000, average payables are $330,000 and average working capital is $665,000. More frequent observations are preferable when balances swing sharply within the month.
The table shows each calculation. Ratios are rounded to two decimals, days to one decimal; calculations retain full precision until the final display.
| Measure | Calculation from the inputs | January result |
|---|---|---|
| Current ratio | 1,320,000 / 610,000 | 2.16x |
| Quick ratio | (150,000 + 480,000) / 610,000 | 1.03x |
| Cash ratio | 150,000 / 610,000 | 0.25x |
| Working capital turnover | 900,000 / 665,000 | 1.35x for the month |
| Days sales outstanding | 450,000 / 900,000 × 31 | 15.5 days |
| Days inventory outstanding | 630,000 / 620,000 × 31 | 31.5 days |
| Days payable outstanding | 330,000 / 680,000 × 31 | 15.0 days |
| Cash conversion cycle | 15.5 + 31.5 − unrounded payable days | 32.0 days |
The quick ratio here includes only cash and trade receivables. The cash ratio is narrower still. Their gap from the current ratio directs attention to inventory and prepayments, which cannot necessarily meet a payment due immediately.
The turnover figure uses total balance-sheet working capital and monthly sales. It is not an annual figure. See working capital turnover for the denominator choices and interpretation when working capital approaches zero.
Payable days here uses purchases because the question concerns supplier credit against purchases. A report that instead uses cost of goods sold must disclose that convention and apply it consistently. The cash conversion cycle page covers the timing measure in more detail.
Three checks make the comparison reviewable. First, the asset and liability subtotals must match the dated balance sheet. January working capital must also equal $1,320,000 minus $610,000, or $710,000.
Second, the inventory rollforward must close: $600,000 plus $680,000 less $620,000 equals $660,000. If it fails, investigate returns, write-downs, transfers or missing purchases before using the days measures.
Third, every measure must retain its period label. January sales and 31 days belong together; annual sales with the same day count do not. Keep a definitions tab recording account scope, averaging method and denominator convention, and have the controller review changes before the next reporting cycle.
A current ratio of 2.16x does not mean the distributor can immediately spend twice its liabilities. Its cash ratio is 0.25x, and inventory occupies a substantial part of the balance sheet. Treasury still needs a dated view of payments and receipts.
Credit managers should review aging behind the receivable days. Operations should inspect slow-moving stock behind inventory days. Procurement should distinguish negotiated terms from overdue supplier payments behind payable days. Finance should compare the same measures across months, then explain which component moved.
Use the broader financial ratios comparison when the question also includes profitability or leverage. Those questions need additional measures rather than more working capital ratios.
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The term working capital ratio often means the current ratio: current assets divided by current liabilities. Working capital itself is the dollar difference between those balances. Label the formula in your report so readers know which measure you mean.
Liquidity ratios use balances at a stated date. Turnover and days measures combine balances with activity over a period, so the sales, costs and day count must match. Monthly measures help identify changes that an annual average can hide.
Yes. More inventory or unpaid receivables can increase current assets and the current ratio while leaving less cash available. Read the current ratio beside receivable aging, inventory movement and cash balances before concluding that liquidity improved.
Finance owns consistent definitions and reconciliation. Credit and sales teams own collection actions, operations owns inventory decisions, and procurement and accounts payable own supplier payment timing. Treasury connects the combined result with available cash and upcoming obligations.