What Gross Margin Tells You That ROE Doesn't

In fiscal year 2015, Kohl's Corporation reported a return on equity somewhere in the low-to-mid twenties — impressive by retail-sector standards, where median ROE tends to land in the low teens. The company was buying back shares aggressively. Debt was rising, but manageable. On the surface, the ROE said: this business is generating good returns for shareholders.

But the gross margin told a quieter, more honest story. Kohl's gross margin had been running around 36% in the early 2010s. By 2015 it had slipped a few tenths of a point. Then a few more the year after. Then more again. No single year looked alarming — retailers face cost pressures, input-price cycles, all the usual explanations. But the direction was persistent. And when a company's ROE holds up or rises while its gross margin declines across multiple years, something structural is usually happening behind the headline number. The ROE wasn't misleading on purpose. It was just absorbing the effect of shrinking equity through buybacks and masking a business that was slowly losing its ability to price above its costs.

ROE is a useful metric. I'm not arguing otherwise. But it measures profitability after capital structure has had its say — after debt, after buybacks, after the leverage decisions that management makes partly for operational reasons and partly to manage financial optics. Gross margin doesn't have that escape route. It captures a single, direct thing: the revenue a business gets to keep after the cost of what it sells. Nothing more. And that makes it one of the cleaner signals of whether a business has real pricing power — which is the root of virtually everything a long-term investor cares about.

Gross Margin's Structural Clarity

The formula is simple enough that it's easy to underestimate: (Revenue − Cost of Goods Sold) ÷ Revenue. The numerator is what the business retains above its direct cost of producing and delivering whatever it sells. High gross margins mean customers are paying a meaningful premium above cost — and competitors haven't been able to force that premium away. Low gross margins mean the business is selling close to cost, constrained either by competition, commodity pricing, or limited differentiation.

ROE, by contrast, changes the moment a company borrows more money, buys back shares, or both — regardless of what happens to the underlying competitive position. A company that moves from 30% debt-to-capital to 60% will typically see ROE rise meaningfully, with nothing about the business itself having changed. Add a buyback program that depletes retained earnings into negative territory — common among US large-caps over the last decade — and ROE becomes almost mathematically uninterpretable as a standalone figure. It's measuring something, but it's not measuring competitive quality.

Gross margin also tells a useful story over time. Stability matters as much as level. A business holding 60% gross margins for ten consecutive years — through supplier cost increases, competitive entry, inflationary cycles — has demonstrated pricing power under test conditions. That durability is worth more than any single year's number. Conversely, gross margin that trends down across three or more consecutive years, even gradually, is the signature of a business losing pricing control. And because gross margin sits so high up the income statement, a multi-year trend down is very hard to offset with cost management or financial engineering below the line.

Three Businesses, Three Margin Tiers

The comparison becomes clearer when you put three real businesses side by side across the gross margin spectrum.

Adobe (ADBE) sits at the high end. Its fiscal 2023 10-K reported a gross margin of approximately 88%, essentially unchanged from 87–88% across the prior three years. For a decade, Adobe's gross margin has hugged a narrow band in the upper 80s. The absolute level is striking — nearly 88 cents of every dollar in revenue flows above the cost of revenue line. But the consistency is the more important signal. Prices have been raised multiple times across the subscription period. Customers haven't left. Competitors haven't successfully undercut. When a company holds gross margins that stable at that level across a full business cycle, the financial data is insisting: the pricing power here is structural, not cyclical, and not dependent on favorable macro conditions.

Procter & Gamble (PG) represents the middle tier. P&G operates in a more contested space — consumer packaged goods, where private-label alternatives are always a shelf away. Its gross margin from fiscal 2020 through fiscal 2024 ran between roughly 47% and 51%, compressed at the low end by the commodity inflation of 2021–2022 and recovering as P&G pushed through pricing on its major brands. The recovery back above 50% by fiscal 2024 is itself the signal. P&G's brands were strong enough to pass through meaningful cost increases without proportional volume losses — which is the precise thing gross margin is supposed to measure. A company with moderate gross margins that can defend and restore them under inflation pressure has demonstrated competitive quality more concretely than one whose ROE looks clean because the leverage is right.

Whirlpool (WHR) is in a different situation entirely. Its gross margins have run in the high teens to roughly 20% over the past five years, per annual filings. At that level, the buffer between revenue and direct costs is thin. Input-cost inflation — steel, components — flows through to gross margin rapidly, because there isn't enough cushion to absorb it. Whirlpool has legitimate brand recognition and a century of distribution relationships. But in a category where mid-range appliances from multiple manufacturers sit in the same retail space, the pricing power ceiling is low. And gross margin reflects that ceiling honestly, in a way that ROE — which can look reasonable in a good cycle year — simply doesn't.

When ROE Outpaces What the Business Can Justify

There's a specific pattern worth watching for: ROE running substantially higher than what the company's gross margin trajectory can justify. In most cases, the explanation involves leverage compressing the equity denominator faster than earnings are falling.

The math is illustrative. A retailer earns a 32% gross margin on $10 billion in revenue — $3.2 billion gross profit. After operating costs, depreciation, and taxes, it generates $500 million in net income against $4 billion in equity: a 12.5% ROE. Now management allocates $1.5 billion in debt-funded buybacks over three years, reducing equity to $2.5 billion. Same operations, same gross margin, same $500 million in net income — ROE climbs to 20%. On paper, the business improved. Gross margin tells you it didn't.

This dynamic isn't unique to retail. It's common across consumer and industrial sectors where capital allocation decisions are made partly to support financial metrics visible to investors. The problem is that gross margin and ROE eventually converge on the same answer. When gross margins are declining, the pricing power that sustains earnings is eroding. And a business that loses pricing power will eventually lose the earnings too — at which point the leveraged capital structure becomes a problem rather than a tool. The Kohl's example played out over nearly a decade. Gross margin moved first. ROE caught up eventually, in the wrong direction, when the earnings base could no longer support the financial structure built on top of it.

I'm less certain about where exactly the divergence becomes diagnostically meaningful than I'd like to be. It varies by industry, capital intensity, and the specific type of leverage involved. But the directional principle holds consistently across most of what I've looked at: when gross margin is trending down while ROE is holding up or rising, the burden of proof should sit on the financial engineering explanation, not the competitive quality story.

Applying This in Practice

The most useful version of gross margin analysis isn't a snapshot — it's a three-to-five-year trend read alongside the business's competitive set.

Same-industry comparison is essential because gross margin levels aren't comparable across industries. An 18% gross margin at a food distributor is decent. At a software company, it would signal something structurally broken. The question for any given business is whether its gross margin is high relative to industry peers, and whether that premium is holding.

The trend matters more than the level for established businesses. A company moving from 44% to 46% gross margin across three years is demonstrating pricing leverage — either the product is worth more to customers than it was, or input costs are being managed better than peers. A company at 60% gross margin but trending toward 57% is losing ground, even at an absolute level that still looks impressive. High-quality businesses tend to show gross margins that are stable or gently expanding. Multi-year declines deserve investigation before you attribute the narrative of competitive strength to them.

Combining gross margin with ROIC provides the most complete read. Gross margin confirms pricing power at the revenue line. ROIC confirms that the business converts that pricing power into returns above its cost of capital across the full capital base. A business with strong gross margins but mediocre ROIC often has an operational inefficiency problem — costs between gross profit and operating income are too high or the asset base is too large. A business with strong ROIC but declining gross margins often has a leverage-dependent quality problem — returns look fine until the pricing power erodes enough that earnings follow. When both metrics are strong and stable, the quality signal is robust. That combination — high gross margins held consistently, paired with high ROIC on the full capital base — is what a quality compounder looks like in the financial data before any qualitative story about brand strength or market position has been told.

Key Takeaways

• Gross margin measures pricing power directly: the revenue retained above the direct cost of delivering what the business sells. It doesn't change when a company borrows money or repurchases shares. ROE does — which is why they can diverge significantly without the business itself having changed.
• Adobe's ~88% gross margin has held in a narrow range for years, reflecting software-defined pricing durability. P&G's recovery to ~50%+ after 2021–2022 commodity inflation confirmed its brand-based ability to pass costs through. Whirlpool's thin 18–20% margins reflect the constrained pricing ceiling in commodity-adjacent appliances.
• When ROE is rising or holding while gross margin declines across multiple years, the explanation is almost always leverage or buybacks — not improving competitive quality. Kohl's sustained high ROE through aggressive buybacks in the mid-2010s while gross margins declined steadily, masking a deteriorating pricing position that eventually showed up in earnings.
• Track gross margin direction within an industry peer group over three to five years — not the level in isolation. Combine with ROIC for the most complete read: gross margin confirms pricing power exists; ROIC confirms it translates into above-cost-of-capital returns on the full capital base.