Working Capital Collar

A working capital collar is a negotiated range — defined by a floor and a ceiling — around the target working capital figure used in a purchase price adjustment. If the actual closing working capital falls within the collar (between the floor and ceiling), no price adjustment is made. Only if closing working capital falls outside the collar — below the floor or above the ceiling — does a dollar-for-dollar purchase price adjustment occur. The collar creates a neutral zone of tolerance that protects both parties from immaterial fluctuations in working capital without triggering adjustments.

Working capital adjustments in M&A purchase agreements are designed to ensure the buyer receives the business with a normalized amount of working capital — enough to operate normally without requiring an immediate additional capital injection. The reference point is a negotiated target working capital figure (often based on a trailing average or a specific historical period). If the business delivers more working capital than the target at close, the buyer pays more; if less, the buyer pays less.

Without a collar, any deviation — even $5,000 — from the working capital target triggers an adjustment. This creates an adversarial post-close accounting exercise where both parties scrutinize every item in the working capital calculation, often resulting in disputes over methodology rather than meaningful economics. A collar — typically 1–3% of enterprise value or $100K–$500K in SMB deals — creates a zone of immateriality where minor fluctuations are ignored.

Collars are especially important in businesses with lumpy or seasonal working capital. A landscaping company's working capital varies dramatically between February and August; a fixed working capital target without a collar would trigger large adjustments based purely on seasonal timing rather than any change in business quality. A wide collar accommodates these natural variations.