What is working capital?

By Book Keeping Pros
Sources checked 15 Oct 2026

Definition

Working capital is the money a business has available to fund its day-to-day operations, such as buying stock, paying staff and meeting bills. It is usually measured as current assets minus current liabilities, so it shows how much of the business's short-term resources would remain once its short-term debts were paid.

A positive figure means the business holds more in cash, stock and customer debts than it owes over the coming months. A negative figure means short-term debts are larger than those resources, so the business may need to collect money sooner, hold off on spending or arrange finance to keep paying its bills on time.

Working capital is not the same as money in the bank. A healthy figure on paper can be mostly unsold stock or invoices customers have not paid yet, so it helps to look at what the total is made of, not only the total itself. Two businesses with the same figure can be in very different positions if one holds mostly cash and the other mostly slow-moving stock.

Working capital moves in a cycle. Cash buys stock or pays for the labour that goes into a job, the work is sold and invoiced, and the invoice is eventually paid, turning back into cash. The longer each stage takes, the more working capital the business needs to keep going in the meantime. That is why a growing business can run short of cash even while it is profitable: each new sale ties up money in stock and unpaid invoices before any of it comes back.

In Australia

business.gov.au defines working capital as the cash available to a business for day-to-day expenses. On its balance sheet page, it lists working capital and business liquidity, meaning how quickly you could pay your current debts, as things a balance sheet helps you work out.

Its guidance on improving cash flow notes that the more unsold stock you have, the less money you have, and that collecting payments from customers faster frees up cash.

The same guide suggests updating payment terms so customers pay early or up front, for example by offering discounts for early payment, charging late fees or taking deposits on special orders. Its other ideas include asking suppliers for better terms, selling equipment or other assets that are no longer used, and keeping enough cash in reserve to carry the business through quiet periods it knows are coming. Before making changes, it suggests trying them out first in a forecast, for example a cash flow statement, or talking them through with an adviser.

Worked example

Illustrative example: working capital at the end of a month
Item	Amount (AUD)
Cash at bank	9,200.00
Accounts receivable	6,800.00
Inventory	5,500.00
Total current assets	21,500.00
Accounts payable	7,400.00
Credit card	1,600.00
Accrued wages	3,000.00
Total current liabilities	12,000.00
Working capital	9,500.00

Illustrative example only: these rows show the method and are not sourced data.

Common mistakes

Treating a positive working capital figure as proof that the business has cash to spend today.
Including long-term loans or equipment in the calculation, which mixes short-term and long-term items.
Working it out only at year end instead of watching how it moves through busy and quiet periods.
Counting invoices that are unlikely to be collected at their full value without flagging them for your accountant, which makes working capital look stronger than it is.
Calculating it before the month's supplier bills are entered, so current liabilities are understated and working capital may be overstated.

Common questions

What is the difference between working capital and cash flow?

Working capital is a position at one moment: current assets minus current liabilities on a particular date. Cash flow is movement over a period: the money that came in and went out during a month, a quarter or a year. The two are linked, because collecting customer debts faster or holding less stock turns working capital into cash. A business can show positive working capital and still have a month where more cash leaves than arrives.

How do you calculate the working capital ratio?

Divide total current assets by total current liabilities. A result above one means current assets are larger than current liabilities, and a result below one means the reverse. The same calculation is often called the current ratio. Like any ratio, it flags a pattern to look into rather than proving the business is safe or in trouble, so compare it with your own past results and look at what the current assets are made of, since slow-moving stock counts the same as cash.

Why is working capital important for a small business?

Working capital is what keeps a small business running between paying for things and being paid for them. Suppliers, rent and wages often fall due before customers settle their invoices, and that gap has to be covered from somewhere. Watching working capital each month shows whether the cushion is growing or shrinking, which gives time to chase debts, slow purchases or talk to your accountant before a shortfall turns into missed payments.

Is working capital an asset?

Not as a line of its own. Working capital is a calculated figure rather than an account in the books, so it is not listed among the assets. It is worked out from two groups on the balance sheet, current assets and current liabilities, by taking the second from the first. Because of that, it changes only when the two sides move by different amounts: paying a supplier from the bank lowers both by the same amount and leaves working capital where it was.

Related terms

Related service

Management and cash-flow reports

Monthly reports that show where the business stands.

More about management and cash-flow reports

Sources

Key financial terms
business.gov.au, Australian Government. Current at 15 October 2026, released 9 July 2024. Checked 15 October 2026.
© Commonwealth of Australia 2020, licensed under CC BY 3.0 AU. Licence: CC BY 3.0 AU.
Set up a balance sheet
business.gov.au, Australian Government. Current at 15 October 2026, released 18 January 2024. Checked 15 October 2026.
© Commonwealth of Australia 2020, licensed under CC BY 3.0 AU. Licence: CC BY 3.0 AU.
Improve your cash flow
business.gov.au, Australian Government. Current at 16 October 2026, released 20 May 2025. Checked 16 October 2026.
© Commonwealth of Australia 2020, licensed under CC BY 3.0 AU. Licence: CC BY 3.0 AU.