Working Capital in Business Acquisitions: The Number Most Buyers Underestimate
Working capital is current assets minus current liabilities — the operating cash the business needs to function from day to day. In an acquisition context, it becomes the subject of a negotiated adjustment at closing: the buyer expects to receive the business with enough working capital to keep operating, and the purchase agreement defines exactly how much that should be.
The Working Capital Formula
Working Capital = Current Assets − Current Liabilities
Current assets typically included: accounts receivable, inventory, prepaid expenses.
Current liabilities typically included: accounts payable, accrued liabilities, deferred revenue.
Exclusions (usually): cash (seller takes it), long-term debt (separate line item), income taxes payable.
The Working Capital Peg
The "peg" is a target amount of net working capital that the buyer and seller agree the business should have at closing. It's calculated as the trailing average — typically 12 months — of the business's actual working capital, which represents normal operating needs.
At closing, the actual working capital is measured and compared to the peg:
- If actual WC is below the peg: the seller owes the buyer the difference (a dollar-for-dollar adjustment to the purchase price)
- If actual WC is above the peg: the buyer pays the seller the excess
- Within a defined range (the "collar"): no adjustment is made
Why Working Capital Matters
A buyer who takes possession of a business without adequate working capital immediately faces a cash crunch: payroll is due, vendors need payment, but the receivables haven't come in yet. Without operating cash, they may need to inject capital they hadn't budgeted for — effectively paying more than the agreed purchase price.
Sellers who drain cash, slow payables, or accelerate receivable collections before closing can artificially depress working capital at measurement date. This is a form of value extraction that buyers should watch for in the weeks before closing.
Example: Working Capital Adjustment in Practice
A distribution business is acquired for $2,000,000. The working capital peg is set at $250,000 based on a 12-month trailing average. At closing, actual working capital is measured at $190,000.
The shortfall: $250,000 − $190,000 = $60,000.
The seller owes the buyer $60,000 — often deducted from a holdback or escrow established at closing for this purpose.
Seasonality Makes This Complicated
For seasonal businesses (landscaping, retail, HVAC), working capital swings dramatically across the year. A landscaping company might have $400K in working capital in June and $80K in January. If the deal closes in January and the peg was based on a June average, the buyer could demand a significant payment from the seller.
The solution is to define the peg carefully — using multiple years of data, specifying the measurement methodology, and sometimes using a different averaging period for highly seasonal businesses.
Deal-Model Context
Working capital is the operating liquidity the business needs to keep functioning after closing. A buyer can overpay without realizing it if the seller removes too much cash, underfunds inventory, delays payables, or leaves receivables that will not collect.
In the model, working capital should be a separate source-and-use line. A purchase price that includes normal working capital is different from a price where the buyer must inject additional cash on day one to fund payroll, vendors, or inventory.
Buyer Diligence Questions
Diligence should review monthly balance sheets, receivables aging, payables aging, inventory turns, seasonality, deposits, deferred revenue, and payroll timing. The right target is usually based on a trailing average, not a single closing-date snapshot.
This term connects to enterprise value, asset purchases, SBA debt, and deal stack planning. Ask what level of working capital is included, what happens if it is short, and whether excess cash belongs to buyer or seller.
Practical Review Checklist
Before relying on Working Capital in Business Acquisitions: The Number Most Buyers Underestimate in an acquisition model, turn the term into a written assumption. State what source document proves it, what dollar amount or risk category it changes, and whether it affects purchase price, cash at closing, debt service, working capital, legal exposure, or post-close operations. That step makes the concept auditable instead of merely descriptive.
For buyer diligence, collect at least one primary source document, one seller explanation, and one downside case. If the source document is missing, keep the assumption out of the base case. If the downside case changes DSCR, working capital, customer retention, or transition risk enough to threaten closing, address it through price, seller financing, escrow, earnout, indemnity, or a closing condition.
When using AcquireCalc, enter the verified number first, then test the seller's number and a conservative number. The spread between those cases shows whether Working Capital in Business Acquisitions: The Number Most Buyers Underestimate is a minor definition, a negotiation point, or a risk that should change the structure of the deal.
Related Terms
- Due diligence — when working capital analysis happens
- Deal stack — working capital needs affect total capital required at closing
- SBA 7(a) loan — SBA loans can include working capital in the financed amount
Sources & Further Reading
- SBA: Buying an Existing Business — acquisition process and financing