Cyber Monday is a rocket booster for sales—and a magnet for deductions. When orders surge, small disconnects in marketplace fee math, split shipments, or “porch piracy” claims can snowball into accounts payable (AP) headaches and post-audit chargebacks.

Trade spend is supposed to grow sales—not quietly fund deductions. Industry estimates often peg trade spend at 20–25% of gross revenue , yet leakage from unclear terms, mis-accruals, and missing proofs regularly eats 1–2 points of margin. Where the January “surprise” happens. Cooperative advertising ( co-op ) and market development funds ( MDF ) reconciliations arrive with fuzzy backup. “Rate card drift” means the ad ran at a different cost than you accrued. Promo proofs live