Net Working Capital: Formula and How to Calculate It

Net working capital is one of the simplest and most revealing numbers in finance. It is the gap between what a company owns that is liquid and what it owes in the near term, and it shows, at a glance, whether the business has the short-term resources to fund its own operations. Watch it over time and you can see whether a company is freeing up cash or quietly tying more of it up.

This guide explains what net working capital is, the formula, a worked example, what positive and negative values mean, and why the change in net working capital matters as much as the level.

What is net working capital?

Net working capital (NWC) is the difference between a company's current assets and its current liabilities. It measures the short-term liquidity available to run the business: the resources that can be converted to cash within a year, minus the obligations due within a year. Positive net working capital means current assets exceed current liabilities; negative means the reverse.

Net working capital is the cash cushion built into day-to-day operations. It is the money the business has tied up in the gap between what it is owed and what it owes, and freeing it is one of the highest-leverage things a finance team can do.

The net working capital formula

Net Working Capital = Current Assets − Current Liabilities

Current assets include cash, accounts receivable, and inventory; current liabilities include accounts payable and other obligations due within a year. For example, with $800,000 in current assets and $500,000 in current liabilities:

• Net Working Capital = $800,000 − $500,000 = $300,000

Some analysts use a narrower "operating" net working capital that excludes cash and short-term debt, to focus on the working capital tied up purely in operations (receivables plus inventory minus payables). Both are useful; just be consistent about which one you are tracking.

Positive vs. negative net working capital

• Positive net working capital means current assets exceed current liabilities. It generally signals the company can cover short-term obligations and fund operations, though an unusually high figure can mean cash is sitting idle in receivables or inventory.
• Negative net working capital means current liabilities exceed current assets. It can be a warning sign, but not always: some efficient businesses (think retailers or subscription companies that collect cash before paying suppliers) run negative NWC by design and are perfectly healthy.

Why the change in net working capital matters

The level of net working capital tells you where you stand; the change tells you where cash is going. When net working capital increases, cash is being tied up (in more receivables or inventory, for example). When it decreases, cash is being freed. That is why the change in net working capital appears directly in the operating section of the statement of cash flows: it reconciles profit to actual cash.

This is the heart of working capital management: managing receivables, payables, and inventory to minimize the cash trapped in the cycle. The less cash tied up in net working capital, the more is available to fund the business.

Net working capital and related metrics

Net working capital connects to the other short-term measures:

• The quick ratio and current ratio express liquidity as a ratio rather than a dollar amount.
• The cash conversion cycle (DSO + DIO − DPO) measures how long cash stays tied up in working capital.

Together they give a full picture of short-term financial health. Software, and increasingly AI agents, can track all of them continuously from live data. See the best working capital software.

Frequently asked questions

What is net working capital?

Net working capital is current assets minus current liabilities. It measures the short-term liquid resources a company has to fund its operations. Positive NWC means current assets exceed current liabilities; negative means the reverse.

How do you calculate net working capital?

Net Working Capital = Current Assets − Current Liabilities. For example, $800,000 in current assets minus $500,000 in current liabilities equals $300,000 of net working capital.

Is negative net working capital bad?

Not always. It can signal liquidity trouble, but some efficient businesses, like retailers and subscription companies that collect cash before paying suppliers, run negative net working capital by design and are healthy. Context and trend matter.

Why does the change in net working capital matter?

Because it shows where cash is going. An increase in net working capital ties up cash (in more receivables or inventory); a decrease frees cash. The change appears in the operating section of the cash flow statement, reconciling profit to actual cash.

The bottom line

Net working capital, current assets minus current liabilities, is a core gauge of short-term financial health and the cash tied up in day-to-day operations. The level shows whether a company can fund itself; the change shows where cash is moving. Managing it down, without starving operations, frees cash to run the business.

If you want AI agents tracking your working capital and the cash tied up in it, continuously and traceably, talk to our team.