---
id: "claim-haphazard-discounting-margin-destruction"
type: "claim"
source_timestamps: ["¶6"]
tags: ["financial-impact", "margin-erosion"]
related: ["concept-profit-cannibalization", "quote-profit-from-final-dollars"]
speakers: ["Rafi Mohammed"]
confidence: "high"
testable: true
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"
---
# Haphazard discounting disproportionately destroys net profit

Because profit comes from the **final dollars** of a price tag (see [[quote-profit-from-final-dollars]]), any discount is deducted directly from the profit margin. Mohammed cites that the **average net profit margin for S&P 500 companies in Q4 2025 was 13.2%.** Therefore, haphazardly giving away a **10% discount is not a trivial marketing expense — it nearly wipes out the entire profit margin for that transaction.** This mathematical reality is precisely why discounting must be strategic and hurdle-gated rather than blanket, and it is the financial engine behind [[concept-profit-cannibalization]].

**Confidence: high; testable: true** — the 13.2% figure and the arithmetic are checkable against reported margin data.