How Acquirers Adjust Working Capital to Cut Your Final Deal Price — Adjustment M&A

Why the Working Capital Peg Is the Buyer's Hidden Lever

A working capital adjustment M&A deal is a standard mechanism in cash-free debt-free acquisitions where the final purchase price is adjusted based on the difference between actual closing net working capital and a pre-agreed target. For SMB owners selling their business, this adjustment is often the single largest source of post-LOI price reduction, yet most founders do not understand how the mechanics work until it is too late.

The working capital peg is the agreed-upon dollar amount of net working capital the seller must deliver at closing. If actual working capital falls below this peg, the buyer deducts the shortfall from the purchase price. If it exceeds the peg, the seller receives an additional payment.

Buyers prefer a high peg because it forces the seller to leave more cash in the business. A high peg means the seller must maintain larger accounts receivable balances and higher inventory levels, effectively funding the buyer's post-close operations for free. A low peg works in the seller's favor, allowing them to extract more cash at closing.

The negotiation over this single number determines whether the seller walks away with the full LOI price or a reduced amount. In 2024 M&A deals, seller-favorable working capital surplus treatment increased, reversing a prior buyer-favorable trend.¹ This shift suggests sellers are becoming more sophisticated, but the default language in most LOIs still favors the buyer.

What Working Capital Adjustments Are and Why They Matter

A working capital adjustment compares the company's actual net working capital at closing to the negotiated target. Net working capital equals current assets minus current liabilities, excluding cash and debt. The difference, positive or negative, adjusts the purchase price dollar for dollar.

For a typical SMB with $2 million in revenue, a working capital target of $300,000 might be set. Suppose actual closing working capital is $200,000 — the buyer deducts $100,000 from the purchase price. If actual working capital is $400,000, the seller receives an additional $100,000.²

The adjustment matters because it is the primary mechanism buyers use to ensure the business has enough liquidity to operate post-close. Without it, the buyer could inherit a business with depleted receivables and unpaid bills, requiring immediate capital injection. Post-close net working capital purchase price adjustment disputes can be mitigated by clear definitions and calculation mechanics in the purchase agreement.³

How Acquirers Define Normalized Working Capital in Your Deal

Acquirers define normalized working capital by excluding non-operating items and one-time events. The definition is embedded in the purchase agreement and determines which line items count toward the calculation.

Common exclusions include excess cash, short-term debt, related-party receivables, and non-recurring expenses. The buyer's definition often excludes items that would increase the seller's working capital, such as customer deposits or deferred revenue. The seller's definition includes them.

The negotiation over what constitutes "normalized" working capital is where most value is won or lost. A buyer might argue that a large customer prepayment is a liability, reducing working capital. The seller would argue it is a sign of customer commitment and should be excluded. Net working capital assumptions can make or break a deal, as the purchase price is often adjusted based on a working capital peg.²

The Most Common Working Capital Traps That Cut Your Price

Buyers use several specific traps to reduce the final purchase price through working capital adjustments.

The seasonal adjustment trap is particularly damaging. A buyer might set the working capital target based on a slow month, then close during the busy season when receivables are high. The seller delivers more working capital than required but receives no credit for the surplus.

Another common trap is the "trailing twelve months" calculation. Buyers often use the most recent twelve months to set the target, but if the business grew rapidly in the final quarter, the target will be too low relative to actual closing working capital. Litigation after a business sale often arises from post-sale purchase price adjustments, including working capital calculations.⁴

How to Calculate Your Target Working Capital Before Negotiations

Calculating your target working capital requires analyzing historical financial data and understanding your business's normal operating cycle.

For a hypothetical SaaS company with $500K ARR, the average net working capital over the past 24 months might be $75,000. If the business grew 30% in the last quarter, the actual closing working capital could be roughly $95,000. Setting the target at $75,000 means the seller leaves approximately $20,000 in the business without compensation.⁵

The buffer calculation is critical. A working capital adjustment provision in the purchase agreement determines the final price by comparing actual closing working capital to a negotiated target.⁵ Adding a 10-15% buffer above the historical average protects against growth-related increases in receivables and inventory.

Negotiating the Working Capital Peg: What to Push Back On

Sellers should push back on three specific elements of the working capital peg: the baseline period, the exclusion list, and the post-close audit mechanics.

The baseline period should reflect the business's normal operating cycle, not a single month or quarter. If the buyer proposes using the most recent three months, counter with the trailing 24-month average. If the business has seasonal peaks, insist on using the same season as the expected closing date.

The exclusion list must be negotiated line by line. Common items sellers should fight to include are customer deposits, prepaid expenses, and deferred revenue. These items represent real economic value that the seller created.

The post-close audit mechanics determine who calculates the final adjustment and what methodology they use. Sellers should require that the calculation follow GAAP consistently applied, with the same accounting policies used in prior periods. The buyer should not be allowed to change accounting methods after closing.

Real-World Example: A $500,000 Adjustment That Changed the Deal

Consider a hypothetical manufacturing company with $8 million in annual revenue. The LOI stated a purchase price of $6 million with a working capital target of $1.2 million¹. The seller's historical average net working capital was approximately $1.1 million, but the buyer insisted on $1.2 million based on the most recent quarter.

At closing, the company's actual net working capital was $1.35 million due to a large customer order that increased receivables. The seller expected a $150,000 surplus payment. However, the buyer excluded $200,000 in customer deposits from the calculation, arguing they were liabilities. The final adjustment was a $50,000 deduction instead of a $150,000 surplus¹.

The seller lost a significant portion of the deal value — for example, $200,000 — because the customer deposits were excluded. If the seller had negotiated the exclusion list before signing, the outcome would have been different. This scenario illustrates why the working capital adjustment is the most consequential financial term in the purchase agreement.

How a Fractional CFO Prepares You for the Working Capital Audit

A fractional CFO prepares the seller for the working capital audit by building a detailed calculation model before the LOI is signed. This model includes every line item that will be disputed, with supporting documentation for each classification.

The CFO also establishes the accounting methodology in the purchase agreement. This includes specifying which GAAP principles apply, how estimates are handled, and what documentation the buyer must provide to challenge any line item.

The preparation extends to the post-close period. The CFO ensures the seller's accounting team maintains the same policies through closing, avoiding any changes that could be used to challenge the calculation. A working capital adjustment provision in the purchase agreement determines the final price by comparing actual closing working capital to a negotiated target.⁵ The CFO's role is to ensure that comparison is fair and accurate.

Your Next Step

Review your LOI's working capital adjustment clause line by line. Identify the target amount, the exclusion list, and the post-close audit mechanics. If any of these terms are undefined or favor the buyer, request revisions before signing. For a free review of your working capital adjustment language, email [email protected].