Net Working Capital in M&A: The Buyer's Most Important Number

Quick answer

Net working capital (NWC) in M&A is the difference between current assets and current liabilities included in the purchase price mechanism. It determines the dollar-for-dollar price adjustment at closing and the 60–90 day post-close true-up. KPMG Deal Advisory notes that NWC methodology disputes are among the most common post-close disagreements, typically affecting 2–4% of deal value. Key practices: normalize for seasonality, exclude deal-specific items, agree on the NWC peg in the LOI, and define the true-up timeline.

If EBITDA determines what you pay for a company, net working capital determines what you actually receive at closing. Buyers who master NWC mechanics avoid the most common post-close dispute in M&A.

What NWC Includes (and Excludes)

Included in NWC

• Accounts receivable (trade, net of allowance for doubtful accounts)
• Inventory (raw materials, WIP, finished goods)
• Prepaid expenses (insurance, rent, licenses)

• Accounts payable (trade)
• Accrued expenses (salaries, utilities, professional fees)
• Deferred revenue (if applicable and agreed upon)
• Customer deposits

Excluded from NWC (typically)

• Cash and cash equivalents — Treated as separate price adjustment
• Debt (current portion) — Included in net debt mechanism
• Transaction expenses — Seller-specific costs excluded
• Income taxes payable — Often excluded or treated separately
• Intercompany balances — Eliminated at closing

The specific inclusions and exclusions are negotiated in the purchase agreement. KPMG Deal Advisory emphasizes that these definitions must be precise to avoid post-close disputes [KPMG Deal Advisory, "Financial Due Diligence methodology," 2024].

The NWC Peg: How It Is Set

The peg is the buyer's expectation of "normal" NWC — the level required to operate the business without additional capital infusion.

Normalization Process

1. 1. Calculate monthly NWC for trailing 12–24 months
2. 2. Identify seasonality — Is there a consistent pattern? (Retail businesses see NWC spike in Q3–Q4)
3. 3. Remove one-time items — Unusual collections, clearance sales, vendor disputes
4. 4. Adjust for known changes — New contracts, lost customers, price changes
5. 5. Set the peg — Typically the trailing 12-month average, or the average excluding seasonal peaks/troughs

Common Peg Strategies

The True-Up Mechanism

How It Works

1. 1. Estimated closing statement: Before closing, the seller prepares an estimated NWC calculation
2. 2. Purchase price at closing: Based on the estimated NWC vs. peg difference
3. 3. Post-close true-up: Within 60–90 days, the buyer prepares a final closing statement with actual NWC
4. 4. Review period: The seller has 30–60 days to review and object
5. 5. Dispute resolution: If parties disagree, an independent accounting firm resolves disputes

Dollar-for-Dollar Adjustment

• Actual NWC at closing = $5.5M → Buyer pays seller $500K additional
• Actual NWC at closing = $4.3M → Purchase price reduced by $700K

This mechanism is symmetrical — it protects both parties.

Seller Manipulation: What to Watch For

Sellers can manipulate pre-close NWC through:

• Accelerating collections: Pressuring customers to pay early, inflating AR-turned-cash
• Delaying payables: Holding vendor payments to inflate AP balance at closing
• Drawing down inventory: Reducing stock levels below operational needs
• Pre-billing: Issuing invoices before services are delivered to inflate AR
• Reclassifying items: Moving items between NWC and non-NWC categories

Deal agreements should include operating covenants requiring the seller to operate in the ordinary course of business during the pre-close period.

AI-Assisted NWC Analysis

AI accelerates NWC analysis:

• Automated extraction of monthly balance sheet data from financial statements
• Seasonal pattern detection across 24+ months of data
• Anomaly flagging — Unusual month-to-month swings in any NWC component
• Scenario modeling — Test different peg methodologies and their price impact
• Peer benchmarking — Compare target's NWC as a percentage of revenue to industry peers

Bloomberg Law reports that NWC disputes are the most common post-close adjustment mechanism, averaging 2–4% of deal value [Bloomberg Law, "Post-Closing Disputes in M&A," 2023].

The Bottom Line

NWC is the most technically demanding and frequently disputed element of M&A pricing. Buyers who normalize correctly, negotiate the peg in the LOI, and structure the true-up mechanism precisely pay the right price and avoid post-close disputes.

Sources cited

1. KPMG Deal Advisory, 'Financial Due Diligence methodology,' 2024
2. Bloomberg Law, 'Post-Closing Disputes in M&A,' 2023
3. Deloitte, 'Working Capital Management in M&A,' 2023

Author

Sorai Editorial

Editorial review team for Sorai's public diligence content

The editorial team translates public primary-source research and Sorai's workflow perspective into material designed for private equity, corporate development, and transaction advisory readers.

What is net working capital in M&A?

NWC is current assets minus current liabilities included in the purchase price mechanism. Components typically include: accounts receivable, inventory, and prepaid expenses (assets) minus accounts payable, accrued expenses, and deferred revenue (liabilities). Cash, debt, and transaction expenses are usually excluded.

What is a NWC peg?

The NWC peg is the normalized target level of working capital agreed upon in the purchase agreement. If actual NWC at closing exceeds the peg, the buyer pays the seller the difference. If below the peg, the purchase price is reduced. The peg is typically set as the trailing 12-month average NWC, normalized for seasonality.

Why does NWC matter for purchase price?

NWC prevents sellers from manipulating the business before closing — delaying vendor payments, accelerating collections, or drawing down inventory. The mechanism ensures the buyer receives the business with a 'normal' level of operating liquidity.

What causes NWC disputes after closing?

Common disputes: disagreement over what constitutes 'normal' NWC, seasonal timing of the closing date, treatment of specific items (deferred revenue, customer deposits), accounting policy differences, and seller manipulation of pre-close collections or payables.

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