Working Capital Calculator

Background.

Working capital is the money a business has left over once it has paid everything falling due inside its operating cycle. The arithmetic is deliberately plain: total current assets minus total current liabilities. The U.S. Securities and Exchange Commission puts it in exactly those words in its Beginners' Guide to Financial Statements — "Working Capital = Current Assets – Current Liabilities" — and describes it as "the money leftover if a company paid its current liabilities (that is, its debts due within one-year of the date of the balance sheet) from its current assets." This calculator builds both sides from the individual line items a real balance sheet actually shows, so you can see which item is doing the damage instead of just staring at a single net number.

There are two working-capital bases in common use and they answer different questions, so this page makes you choose. Net working capital counts every current asset and every current liability, including cash and short-term borrowings. Operating working capital — often called non-cash working capital — strips out cash, marketable securities, revolver draws and the current portion of long-term debt, because those are financing decisions rather than trading positions. Operating working capital is the figure that drives the change-in-working-capital line of a cash-flow statement and the one used in free-cash-flow models. The result panel names the basis you selected, and the same inputs will give you two different answers depending on which you pick. That is not a bug in the metric; it is the reason so many working-capital arguments go nowhere.

Three limits apply to the number before you act on it. First, it is a snapshot on one date. A garden-centre chain that measures working capital on 31 December is measuring the trough of its year, and a company that pushes supplier payments into the first week of the new period can flatter the figure without changing anything real. Second, more is not better. Every dollar sitting in working capital is a dollar that is not earning a return, and a rising balance usually means inventory is not moving or customers are not paying. Third, negative working capital is a normal, healthy state for whole industries. Supermarkets, restaurants and subscription businesses collect from customers before they pay suppliers, so they run the cycle on other people's money. In Aswath Damodaran's January 2026 dataset covering 5,994 US firms, non-cash working capital for the total market is minus 21.86 percent of sales.

The word "current" is doing more work than it looks. Under FASB ASC 210-10-45-1, current assets are those "reasonably expected to be realized in cash or sold or consumed during the normal operating cycle of the business", and ASC 210-10-45-3 adds that where the operating cycle runs longer than twelve months — the standard names tobacco, distilling and lumber — "the long period shall be used". The boundary is therefore the operating cycle or one year, whichever is longer, not a flat twelve months. IFRS reaches the same place through IAS 1 paragraph 66, which classifies an asset as current when the entity expects to realise it in its normal operating cycle or within twelve months. Get the classification wrong and the calculator will faithfully compute a meaningless answer.

Benchmarks are industry-specific and this page will not offer you a universal target. The U.S. Census Bureau's Quarterly Financial Report for 2026 Quarter 1 shows how wide the spread is even among big US corporations: wood products carried current assets equal to 3.90 times current liabilities, all manufacturing 1.38 times, retail trade 1.17 times, and telecommunications 0.83 times. All four groups are functioning industries. Compare yourself with your own history and with direct competitors, not with a number from a textbook.

What is working capital calculator?

Working capital is the difference between the assets a business expects to turn into cash within its operating cycle and the obligations it must settle in the same window. It measures short-term financial slack: how much cushion exists between what is coming in and what must go out. The classified balance sheet that produces it is prescribed for US registrants by Regulation S-X, 17 CFR 210.5-02, which sets out the current-asset captions — cash and cash items, marketable securities, accounts and notes receivable net of the allowance for doubtful accounts, inventories, prepaid expenses and other current assets, followed by total current assets at caption 9 — and the current-liability captions of accounts and notes payable, other current liabilities (with any component above five percent of the total shown separately, "including accrued payrolls, interest, taxes, and debt portions") and total current liabilities at caption 21. Net working capital uses all of those. Operating working capital excludes cash, marketable securities, short-term borrowings and the current portion of long-term debt, isolating the receivables, inventory and payables that trading actually generates. Because the two bases share a name, financial statements, loan covenants and valuation models frequently mean different things by "working capital", and the definition should always be checked against the document that uses the term.

How to use this calculator.

1. 01Choose the basis. Pick Net working capital for a covenant test or a liquidity check, and Operating working capital if you are modelling cash flow or comparing trading efficiency between periods.
2. 02Open the balance sheet for the period you are analysing and copy the current-asset section into the first four fields: cash and marketable securities, receivables net of the allowance, inventory, and prepaid plus other current assets.
3. 03Copy the current-liability section into the next three fields: trade payables, all short-term debt including the current portion of long-term loans, and accrued expenses plus everything else current.
4. 04Enter revenue for the trailing twelve months. This only scales the answer; it does not affect the working-capital figure itself.
5. 05Enter last period's working capital on the same basis so the calculator can show the change. Use 0 if you do not have a prior period.
6. 06Read the primary figure alongside days of working capital, which converts the currency amount into days of sales and is far easier to compare across periods.
7. 07Switch the basis and re-read. If net and operating working capital move in opposite directions, the difference is coming from cash or from short-term debt, not from trading.
8. 08Repeat for the previous three or four period-ends. The trend tells you much more than any single snapshot.

The formula.

Net working capital is a single subtraction: add the four current-asset line items, add the three current-liability line items, and take the difference. Operating working capital performs the same subtraction after removing the two financing items — cash and marketable securities from the asset side, short-term debt and the current portion of long-term debt from the liability side. Nothing is weighted and nothing is discounted, which is exactly why the metric is only as good as the classification behind it.

Rounding happens once. Every addition and subtraction is carried out at full precision in decimal arithmetic and the result is rounded a single time at the output boundary; there is no intermediate rounding to accumulate error. The page then displays currency to two decimals, percentages to two decimals and days to one. Because the formula is pure addition, the only behavioural boundary is the sign change at zero, and the calculator reports negative working capital as a negative number rather than clamping it.

The two derived measures rescale the same figure. Working capital as a percent of revenue divides by trailing-twelve-month revenue and multiplies by 100. Days of working capital divides by revenue and multiplies by 365, converting the currency amount into days of sales — the form in which working capital is comparable between a $2 million distributor and a $2 billion manufacturer. In the worked example below, $1,108,520 million of net working capital on $8,221,951 million of revenue is 13.4824 percent of revenue, or 49.21 days of sales.

The change-in-working-capital output follows the cash-flow-statement sign convention: this period minus last period. An increase is a use of cash, because money has moved into receivables or inventory; a decrease is a source of cash. Modelling free cash flow therefore requires subtracting the increase, and the operating basis is the correct one to use, since including cash in the calculation would double-count the very balance the cash-flow statement is trying to explain.

One movement that surprises people is a revolver draw. Borrowing $50,000 on a line of credit raises cash by $50,000 and raises short-term debt by $50,000. Net working capital does not change at all. Operating working capital does not change either, because that basis excludes both legs. Borrowing short-term money improves your bank balance and your ability to pay next week's invoices, but it does not create working capital, and any advice that says otherwise is wrong about the arithmetic.

A worked example.

Frequently asked questions.

References& sources.

1. [1]U.S. Securities and Exchange Commission. "Beginners' Guide to Financial Statements." Investor publication. Source of "Working Capital = Current Assets – Current Liabilities". Note: sec.gov returns HTTP 403 to automated fetchers; the page loads normally in a browser.
2. [2]Financial Accounting Standards Board. FASB Accounting Standards Codification, Topic 210 Balance Sheet, paragraphs 210-10-45-1 and 210-10-45-3 (originating in ARB No. 43, Chapter 3A). Definition of current assets and the operating-cycle-or-one-year rule. Free registration required at asc.fasb.org.
3. [3]U.S. Government Publishing Office. 17 CFR 210.5-02, Regulation S-X — Balance Sheets. Current-asset captions 1–9 and current-liability captions 19–21. CFR annual edition, retrieved 2026-07-29.
4. [4]U.S. Census Bureau. Quarterly Financial Report for Manufacturing, Mining, Wholesale Trade, and Selected Service Industries, 2026 Quarter 1. Table 1.1 All Manufacturing balance sheet and the Introduction's financial-operating-ratio definitions. Retrieved 2026-07-29.
5. [5]U.S. Census Bureau. Quarterly Financial Report — QFR Definitions. "Total current assets to total current liabilities. This ratio is obtained by dividing total current assets by total current liabilities." Retrieved 2026-07-29.
6. [6]IFRS Foundation. IAS 1 Presentation of Financial Statements, paragraphs 66 and 68 (2024 issued edition). Superseded by IFRS 18 for annual periods beginning on or after 1 January 2027, with current/non-current classification carried forward unchanged. The ifrs.org standard PDF is login-gated.
7. [7]Damodaran, A. "Working Capital Ratios by Sector (US)." NYU Stern School of Business, data as of January 2026. Total-market non-cash working capital of −21.86% of sales across 5,994 firms. Retrieved 2026-07-29.