Net Working Capital (NWC): Definition, Formula, and the Transaction Adjustment

The textbook formula is:

Net working capital = current assets – current liabilities

There are three versions in common use, and most confusion comes from mixing them:

A worked example (figures in thousands, hypothetical)

The current ratio on the reporting basis is about 1.46. This example assumes the loans are treated separately from operating NWC and customer deposits remain in NWC. Adding back CAD 400,000 of financing liabilities more than offsets removing CAD 300,000 of cash. Removing cash pulls the other way, so the net effect depends on the balance sheet.

In everyday use they mean the same thing. Some writers use “working capital” for current assets alone and “net working capital” for the difference. In a purchase agreement, what binds both sides is the agreement’s own definition of which accounts are included.

There is no universal figure. In the federal government’s 2024 Financial Performance Data for incorporated Canadian businesses with CAD 5 million to 20 million in revenue, the median industry group reports a current ratio of about 1.6, and the middle half of industry groups sit between 1.3 and 1.9. But the industry headline often hides the figure for a business your size: in 41 of 244 industry groups (2024 data, analyzed October 2026), the whole-industry ratio is 1.0 or higher while at least one revenue group in the same industry sits below 1.0. Our study of working capital ratios by industry in Canada sets out the method and the industry tables.

Two cautions before comparing yours:

For the receivables side of the same data, see ISED collection-period definitions.

They answer different questions. The balance sheet properly includes the current portion of loans among current liabilities. A cash-free, debt-free transaction may settle those loans separately, so including them again in the operating NWC target would mix financing with trading.

In a working capital walkthrough, our transaction lead described a seller’s starting calculation that included current loan balances. Separating those loans changed the operating figure. That does not mean the accountant’s balance sheet was wrong: it means a reporting total was being used for a different purpose.

The direction is not predetermined. Removing cash reduces NWC; removing a financing liability increases it. Customer deposits, lease balances, taxes and related-party accounts need their own definitions. Use the net debt schedule alongside the NWC schedule so the same amount is not deducted twice.

Our transaction discussions include static inventory, adjustment accounts and unsupported allowances. Those observations point to evidence requests, not automatic exclusions.

Document each correction and apply the same measurement policy to the peg and closing statement. Deleting an account because its name looks unusual can be just as misleading as accepting it without support.

Once the balance sheet is clean, the question becomes which historical period represents the normal working capital need.

Our default starting point is a trailing twelve month average. It covers a full annual cycle and is a useful comparison when the business and its accounting have been stable.

Two reasons to test it against other windows are growth and contraction:

Growth. A business whose working capital requirement has been climbing steeply will not be represented by a twelve month average, because most of those twelve months describe a smaller company. In an engagement discussion, our team described receivables and the working capital requirement growing alongside earnings, and argued for comparing a shorter window with the trailing twelve months. The important question was whether the average represented the business being bought. A recent period still needs a seasonality check before it can justify the target.

Contraction. The mirror image. A declining business may have a trailing average above its present requirement. Check whether lower sales have actually reduced receivables and inventory, or whether slow collections and unsold stock have kept balances high.

The trade that follows from this

There is a direct link between the earnings a seller wants credit for and the working capital they have to leave, and it is worth understanding before you negotiate.

Where a seller points to recent improved performance and asks for the price to reflect it, that is often reasonable. But recent performance is also the period in which working capital expanded. If recent trading supports the earnings case, test the operating capital needed to sustain it as well. The appropriate earnings period and NWC method may differ, but the assumptions should reconcile.

In the same discussion, our team described connecting an improved earnings case to the additional working capital supporting those earnings. The useful negotiating question is concrete: which receivables, inventory and payment terms are needed to deliver the earnings being priced?

Seasonal businesses need a normalized figure rather than a point-in-time one, and the effect can be extreme.

The clearest way to see it is a seasonal retailer. Buy a Halloween business on the twentieth of October and you are buying a warehouse full of inventory. Buy the same business on the tenth of November and there is almost none. The business has not changed. The date has. In the first case the buyer receives far more working capital than the business normally carries, and in the second, far less. Compare the annual cycle with the closing-season requirement and agree how the target will reflect it. An annual average alone does not decide what a seasonal buyer needs on day one.

For a less extreme business, compare the same months across years and investigate why peaks occur. Receivables, inventory and payables can follow different cycles. A busy sales month does not necessarily coincide with the largest cash requirement.

See inventory in due diligence and working capital mistakes in acquisitions.

A deposit may fund work the buyer will perform after closing. The questions are what obligation remains, what it will cost to fulfil, whether it can be refunded, and where the cash goes. The parties may include the liability in NWC, treat an agreed amount as debt-like, or negotiate a separate adjustment. There is no universal rule that the full deposit must remain as cash or that only the cost-to-complete amount matters.

Model the full bridge. If deposits reduce closing NWC, compare that with a peg using consistent treatment. If they are deducted separately as debt-like, remove any overlapping treatment. A buyer who receives a deduction already needs to account for it before asking for the same amount again as retained cash.

Lease security deposits are a different asset. Determine whether they transfer, when they are recoverable and whether the agreement includes them. A long-term deposit is not automatically current working capital merely because cash is tied up in it.

The negotiated target is the peg. At closing, actual working capital is measured against it, and the price adjusts for the difference: the seller is paid more if they leave more than the target, and less if they leave less. That adjustment is the true-up.

A necessary control is: the true-up must use the same method as the peg. Where the peg is built one way and the closing calculation is run another, the two will differ for reasons that have nothing to do with how the business was run, and the price adjustment may reflect a method change rather than a change in operating balances. Whatever method sets the target should be written down in enough detail that a different person could reproduce it. The working capital peg covers the mechanics.

On very small transactions a formal peg is sometimes more machinery than the deal warrants, and that is a legitimate call to make deliberately rather than by omission.

If you are preparing for a sale and want the operating figure built before a buyer builds it, our transaction advisory services team proposes a supported peg as part of a quality of earnings engagement.