Purchase Price Adjustments Explained

Purchase price adjustments (PPAs) reconcile the price a buyer and seller agree to at signing with the business’s actual financial position at closing. Once found in about half of M&A deals a decade ago, PPAs now appear in roughly 80% of transactions, making them a critical piece of deal structuring for both sides.

Net Working Capital Adjustments

Net working capital (NWC) is typically calculated as (accounts receivable + inventory + prepaid expenses) minus (accounts payable + accrued liabilities). Buyer and seller agree on a target or “peg” NWC, often based on a 12-month average, that reflects what the business needs to operate normally. If closing NWC exceeds the target, the buyer pays the seller for the excess; if it falls short, the seller receives less because the buyer must inject additional funds. To avoid disputes, these calculations are generally done using GAAP or consistent historical methods, and a sample NWC calculation schedule attached to the agreement clarifies how items like receivables will be treated.

Cash and Debt Adjustments

Most M&A deals are structured cash-free and debt-free, meaning the seller withdraws surplus cash and settles outstanding debt before or at closing. The purchase price is then increased by any cash left on the balance sheet and decreased by any debt the buyer assumes, with both targets typically set at zero. These adjustments, included in roughly 80% of deals today, are calculated separately from NWC. Clearly defining “cash” (restricted vs. unrestricted) and “debt” (long-term liabilities vs. shareholder loans) up front avoids confusion during the reconciliation process, which usually happens within 60 to 90 days of closing.

Other Adjustment Factors

Several other items can shift the final price: transaction expenses like legal and accounting fees are usually deducted dollar-for-dollar; employee-related liabilities such as transaction bonuses and accrued paid time off are accounted for; deferred tax assets and liabilities may be included or excluded from NWC to prevent distortions; and contingent liabilities, like pending litigation, can affect price if not addressed separately. In “lockbox” deals priced off an earlier balance sheet date, leakage provisions deduct any value the seller extracted between the lockbox date and closing. Spelling out every adjustment factor in the agreement, with supporting schedules, prevents overlapping adjustments — often called “double-dipping.”

The Adjustment Process: Estimates, True-Up, and Disputes

Before closing, the seller provides an estimated closing statement covering cash, debt, working capital, and transaction expenses, which sets the initial purchase price. After closing, the buyer typically has 60 to 90 days to prepare a final closing statement with actual figures, and the seller has about 30 days to review it; if there’s no objection, the numbers become final and binding. If the final values are higher than estimated, the buyer pays the difference; if lower, the seller refunds the excess, usually within 5 to 10 business days of the determination.

Disputes are fairly common. Most agreements require good-faith negotiation, typically for around 30 days, before escalating to an independent accounting firm that reviews only the specific items in dispute. Some agreements use “baseball arbitration,” forcing the accountant to pick one party’s figure rather than splitting the difference, and “loser pays” fee provisions discourage extreme positions by making the party furthest from the final number cover more of the accountant’s fees.

Negotiating Targets and Allocating Risk

Setting the working capital peg is usually done with a trailing twelve month average, adjusted for seasonality so neither party gets an unfair advantage at closing. De minimis thresholds or collars prevent adjustments unless the variance exceeds a set dollar amount, avoiding disputes over routine day-to-day fluctuations. A two-way adjustment mechanism, where price can move up or down, keeps both parties invested in the outcome, while a one-way adjustment — which typically only moves the price down — favors the buyer and places more risk on the seller. Agreements should also state explicitly that buyers cannot recover the same item through both a purchase price adjustment and indemnification.

Common Mistakes to Avoid

• Define the adjustment time precisely, e.g. “12:01 a.m. EST on the Closing Date,” instead of leaving “Closing Date” ambiguous
• Specify whether GAAP or GAAP-consistent-with-historical-practice takes priority to avoid reconciliation fights
• Use a 6-12 month trailing average for the working capital peg to smooth out seasonal spikes
• Add a “no double dipping” clause so adjustments and indemnification claims don't overlap
• Include a submission-deadline waiver so a missed true-up deadline doesn't create indefinite uncertainty

With 85% of private company M&A deals now including post-closing adjustments, and roughly 90% of buyers handling the initial calculations themselves, sellers benefit from having clean, well-documented financial history before they ever start negotiating.

How Deal Memo Can Support Your M&A Process

Presenting your business professionally to buyers is the first step toward a clean purchase price adjustment process. Deal Memo produces white-labeled CIMs and OMs within 72 hours, giving M&A firms, business brokers, and investment banking teams polished sell-side materials without internal delays. Clear offering materials establish the “representative” historical working capital level buyers rely on, and including sample PPA calculations as exhibits reduces confusion during the post-closing true-up.