Working Capital Formula: How to Calculate It and What It Tells You

Working capital is current assets minus current liabilities. If a company has $800,000 in current assets and $500,000 in current liabilities, its working capital is $300,000. That number represents the buffer between what the company owns in the short term and what it owes in the short term.

The formula answers a basic but critical question: can this company meet its near-term obligations without selling long-term assets or raising new debt? For B2B credit teams and finance managers, it is one of the first calculations to run on any new customer, supplier, or borrower.

The Working Capital Formula

Working capital = Current Assets minus Current Liabilities

Current assets include cash and cash equivalents, accounts receivable, inventory, and other assets expected to be converted to cash within 12 months. Current liabilities include accounts payable, short-term debt, accrued expenses, and any other obligations due within 12 months. Both figures come from the balance sheet. The calculation takes 30 seconds. The interpretation takes longer.

What the Result Actually Means

Positive working capital means the company has more short-term assets than short-term obligations. It can meet its near-term debts from existing assets without liquidating long-term holdings or drawing on a credit line. That is the baseline condition most lenders, trade creditors, and suppliers want to see before extending credit or building a supply chain dependency.

Negative working capital means the opposite: more current obligations than current assets. This is not automatically a distress signal. Some businesses run negative working capital by design. Large retailers like Amazon and Walmart collect cash from customers before they pay suppliers, which means their model generates negative working capital as a feature, not a bug. For a mid-market manufacturer or distributor, though, negative working capital usually warrants a closer look.

Zero working capital is fragile. A single delayed payment from a major customer, or a supplier calling in a payable early, can tip the company into a short-term liquidity crunch with no buffer to absorb it.

Working Capital Ratio (Current Ratio)

The working capital ratio, also called the current ratio, is current assets divided by current liabilities. A ratio of 2.0 means the company has two dollars of current assets for every dollar of current liabilities. A ratio of 1.0 means they break even. Below 1.0 means negative working capital.

Most credit policies use the current ratio as a threshold rather than the absolute dollar figure, because it scales across company sizes. A $5M manufacturer with $500K in positive working capital and a current ratio of 1.1 is more at risk than a $50M distributor with $2M positive working capital and a current ratio of 2.4. The ratio tells you more than the dollar amount alone.

The quick ratio strips out inventory before dividing by current liabilities. For businesses where inventory is illiquid or seasonal, the quick ratio is a tighter and more honest liquidity indicator than the current ratio.

Net Working Capital vs. Working Capital

The terms are used interchangeably in most contexts. In more rigorous financial analysis, working capital sometimes refers to gross current assets, while net working capital subtracts current liabilities. In practice, when a credit analyst or lender says "working capital," they mean the net figure: Current Assets minus Current Liabilities. When you see the subtraction formula, that is net working capital regardless of the label on the page.

Why Trend Matters More Than Snapshot

A single working capital calculation is a point-in-time number. It tells you what the company's liquidity looked like when the balance sheet was prepared. What matters more is whether working capital is improving or deteriorating over time.

A company with a current ratio of 1.6 that dropped from 2.2 two years ago is a different risk than a company that has held steady at 1.6 for three years. The trajectory signals whether management is consuming liquidity faster than it is generating it.

This is where DSO (days sales outstanding) enters the picture. If a company's receivables are growing faster than revenue, working capital can look stable on paper while the cash conversion cycle is stretching. Working capital tells you what the balance sheet shows; DSO tells you how fast the assets on that balance sheet are actually converting to cash. The two metrics together tell you far more than either one alone. For the relationship between these metrics, see our guide to the cash conversion cycle.

What B2B Credit Teams Look For

When a B2B credit team evaluates whether to extend trade credit to a new customer, working capital is one of the first balance sheet metrics they check. The questions are specific: Does the customer have enough working capital to pay trade obligations as they come due? A customer sitting at a current ratio of 0.9 does not have enough current assets to cover current liabilities. If you extend 30-day terms alongside several other vendors, something does not get paid on time.

Is working capital growing or shrinking? A customer growing revenue with stable or improving working capital is a fundamentally different credit risk than one growing revenue while working capital erodes. The trend line matters more than the number at any single point.

How does working capital compare to the credit exposure being requested? If a customer has $200,000 in working capital and is requesting a $500,000 credit line, the exposure would exceed their liquidity buffer. That mismatch is worth flagging before the account is approved.

For supplier risk assessment, the same analysis runs in reverse. A supplier with negative working capital may not have the cash flow to support a large upfront production run without financing that may or may not materialize. See our supplier financial health assessment guide for the full framework, and B2B credit risk monitoring for how to track these signals on an ongoing basis.

What Working Capital Does Not Tell You

Working capital has blind spots worth knowing. It does not tell you the quality of the assets behind the number. Accounts receivable are only as good as the customers behind them. If 40% of a company's receivables are 90 days past due, the current asset balance is overstated. Inventory carried at cost may not be saleable at cost. A clean-looking working capital figure can mask a receivables problem or slow-moving inventory.

It does not capture off-balance-sheet obligations. Operating leases, contingent liabilities, and sale-leaseback arrangements can significantly affect a company's effective liquidity without appearing in the current liabilities line.

And it does not account for seasonal variation. A business with strong seasonal cash flow patterns shows very different working capital at different points in the year. Analyzing a single balance sheet date without understanding the business cycle can produce the wrong conclusion. Working capital is most useful in combination with accounts receivable management data and trend analysis across multiple periods.

Frequently Asked Questions

What is the working capital formula?

Working capital = Current Assets minus Current Liabilities. Both figures come from the balance sheet. Current assets include cash, receivables, and inventory. Current liabilities include accounts payable, short-term debt, and accrued expenses due within 12 months.

What is a good working capital ratio?

A current ratio between 1.5 and 2.5 is generally considered healthy for most businesses. Below 1.0 indicates negative working capital. Above 3.0 may suggest underinvested excess cash. The right ratio depends on industry; capital-light businesses often run lower ratios than asset-heavy manufacturers or distributors.

What is the difference between working capital and cash flow?

Working capital is a balance sheet measure of short-term assets versus short-term liabilities at a single point in time. Cash flow measures the movement of cash in and out of the business over a period. A company can have strong working capital but negative cash flow, or positive cash flow but tight working capital, depending on payment timing and asset composition.

What does negative working capital mean?

Negative working capital means current liabilities exceed current assets. For most businesses this signals liquidity risk: they may struggle to meet short-term obligations without drawing on credit or raising cash. Some business models (high-volume retailers, subscription companies collecting fees upfront) run negative working capital without meaningful distress risk, but this is the exception rather than the rule.

How do you improve working capital?

Working capital improves by collecting receivables faster (reducing DSO), negotiating longer payment terms with suppliers (extending DPO), reducing inventory levels, converting short-term debt to long-term financing, or raising equity. Accounts receivable management is the fastest lever most B2B companies have: accelerating collections directly improves working capital without requiring new financing.