How this instrument works
Working capital is current assets minus current liabilities, left as a dollar figure rather than divided into a ratio. That distinction matters more than it looks: the current ratio tells you assets cover liabilities 1.6 times over regardless of whether the business turns over $200,000 or $200 million a year, but working capital tells you the actual size of the cushion — the number of dollars available to pay near-term bills after every near-term bill is already accounted for. A lender writing a covenant that says 'maintain working capital of no less than $150,000' is naming a dollar floor a ratio covenant cannot express, and an M&A advisor negotiating a purchase price adjustment needs the same dollar figure, not a multiple.
That second use is where this exact number earns its keep. In most business acquisitions, the buyer and seller agree on a target working capital — the dollar amount the business is expected to be delivered with at closing — and if the actual figure on closing day comes in above or below that target, the purchase price is adjusted dollar for dollar. Dealmakers call this the working capital peg, and getting the number wrong by even a modest amount moves cash directly between buyer and seller, which is why this simple subtraction gets audited line by line during due diligence rather than waved through.
The figure says nothing about timing or quality on its own. A hundred thousand dollars of working capital sitting in slow-moving inventory behaves nothing like a hundred thousand in a checking account, and a bill due tomorrow counts the same as one due in eleven months. It can also run negative on purpose: a subscription business or a grocery chain that collects cash from customers before paying its own suppliers can carry negative working capital indefinitely as a structural feature of how the business operates, not a sign of trouble — the sign to watch for is a negative figure that keeps widening alongside slowing sales, not a negative figure by itself.
- Enter Current assets, $ — cash, receivables, inventory, and anything else expected to turn into cash within a year.
- Enter Current liabilities, $ — payables, short-term debt, and any obligation coming due within that same year.
- Read Working capital, $ — the dollar cushion left after every near-term liability is subtracted from every near-term asset.
- Adjust either figure to see how a new short-term loan, a stalled receivables collection, or an inventory build-up moves the dollar cushion, not just a ratio.
Worked example — $500,000 against $300,000 due
A company closes the quarter with $500,000 of current assets — cash, receivables, and inventory it expects to convert within the year — against $300,000 of current liabilities coming due in that same window. Subtracting the two, $500,000 minus $300,000, gives working capital of $200,000, the exact figure this instrument returns for those inputs.
That $200,000 is the dollar amount the company could draw on to cover near-term obligations without selling a long-term asset or arranging new financing. If this same company were the target in an acquisition and the purchase agreement set a working capital peg of $200,000, closing with exactly this balance sheet would trigger no price adjustment at all — the seller delivered precisely what was promised, dollar for dollar.
Questions
How is working capital different from the current ratio?
Working capital is a dollar amount (assets minus liabilities); the current ratio is the same two numbers divided instead of subtracted, so it stays the same whether a business is tiny or huge. A $200,000 cushion is comfortable for a small distributor and negligible for a company with $50 million in annual revenue — the dollar figure only means something once you know the scale of the business behind it.
What is a working capital peg in an acquisition?
It is a target dollar amount of working capital the seller agrees to deliver at closing, set from a recent average so the buyer receives a business with normal, running-condition liquidity rather than one stripped of cash or loaded with unpaid bills right before the sale. If the actual balance at closing differs from the peg, the purchase price is adjusted by the difference, dollar for dollar.
Is negative working capital always a warning sign?
No. Businesses that collect payment from customers before paying their own suppliers — subscription services, grocery chains, many restaurants — can run negative working capital as a normal, even efficient, feature of the model, funding operations with supplier credit instead of their own cash. It becomes a genuine concern only when the negative figure keeps widening alongside falling sales or stretched supplier terms, not from the sign alone.
Why might a lender ask for a dollar working capital covenant instead of a ratio?
A ratio covenant can technically be satisfied with a tiny asset base and a tinier liability base, which is little protection if the dollars involved are small relative to the loan. A dollar-based covenant — maintain working capital above a stated figure — guarantees an actual cushion in currency regardless of how the underlying totals shrink or grow, which is why loan agreements sometimes specify both.
Does working capital include cash and short-term debt?
Yes, in full — this figure keeps every current asset and every current liability exactly as reported, including cash on hand and any short-term or notes payable. A related measure, net operating working capital, strips both of those out first to isolate capital tied up in operations alone; the two numbers answer different questions and are not interchangeable.
How often should working capital be recalculated?
At minimum every reporting period, since both current assets and current liabilities shift with ordinary trading — a large customer payment, a seasonal inventory buildup, or a supplier invoice coming due can each move the figure meaningfully within weeks. Businesses managing it actively, or heading toward a financing round or sale, typically track it monthly rather than waiting for quarterly statements.
References
- U.S. Small Business Administration — Fund your business
- SEC.gov — Beginners' Guide to Financial Statements
Read this first: This instrument shows arithmetic, not advice. Real offers add fees, taxes and terms that vary by lender and place — verify the figures against your actual paperwork before deciding anything.