---
id: "concept-variable-cost-pricing-floor"
type: "concept"
source_timestamps: ["§ Avoid These Common Mistakes"]
tags: ["accounting", "margin-optimization"]
related: ["contrarian-total-cost-fallacy", "claim-incremental-profit-variable-cost", "prereq-variable-vs-total-cost"]
definition: "The concept that discounts can be profitably lowered to just above a product's variable cost, as any revenue above this threshold generates incremental profit."
sources: ["commercial"]
sourceVaultSlug: "hbr-seg-commercial"
originDay: 5
articleStem: "hbr-ext-22-art-of-discounting"
sourceUrl: "https://hbr.org/2026/05/the-art-of-discounting"
sourceTitle: "The Art of Discounting"
---
# Variable Cost as the Pricing Floor

A pervasive management misconception is that every individual unit sold must cover its **fully loaded** cost, including overhead. Mohammed's correction: while *total* revenue across the business must cover *total* costs, the pricing floor for **discounted** units is the product's [[prereq-variable-vs-total-cost|variable cost]].

Any revenue above the variable-cost threshold contributes to gross margin and represents **incremental profit**. Understanding this lower floor lets managers aggressively discount to capture highly price-sensitive customers (who would otherwise not buy at all) and still add to the bottom line — *provided* [[concept-profit-cannibalization|cannibalization]] is controlled. This is formalized in [[claim-incremental-profit-variable-cost]] and it directly powers the myth-inversion in [[contrarian-total-cost-fallacy]].

**Caution (from the enrichment / counter-perspectives):** variable-cost-floor thinking can be dangerous in the long run if managers ignore **capacity constraints, channel conflict, fixed-cost recovery, or competitive responses.** The incremental-profit logic is sound; "anything above variable cost is always good" is not universally true.