Profitability and Margin Analysis

Why revenue growth is not the same as earning power

A regional home-goods retailer reports that sales rose 15% year over year. The CEO (chief executive officer) highlights the headline in the earnings call. The CFO (chief financial officer) sends the board a one-page chart showing that net income (bottom-line profit for the period after all expenses and taxes) fell 30%. The operations team insists that stores were busy and fulfillment hit record volumes. The lender, reading the same filing, asks whether covenant headroom on minimum net income is shrinking. Everyone is looking at real numbers, but they are not looking at the same question until someone builds the profitability story correctly.

Profitability analysis is the discipline of measuring how much profit a company earns relative to its sales, its assets, and its owners' capital. It is not vanity metrics for analysts. It is how boards decide whether growth is healthy, how lenders judge whether debt is supportable, and how operators learn whether pricing, product cost, or overhead is breaking the model. Unit 6, Lesson 1 (Liquidity and Working Capital) asked whether the firm can pay near-term bills. This lesson asks a different question: once bills are paid, is the business actually making money in a durable way?

You already know how to build the income statement (profit and loss statement, also called the P&L or *statement of operations) from Unit 5, Lesson 1 (Building the Income Statement). You traced revenue and COGS (cost of goods sold, the inventory cost of what was sold) from Unit 4, Lesson 3 (Inventory and Cost of Goods Sold), operating expenses and depreciation from Unit 4, Lesson 4 (Property, Plant, Equipment, and Depreciation), and accrual adjustments from Unit 3 (Accrual Accounting). You also know from Unit 5, Lesson 2 (Building the Balance Sheet) that total assets and shareholders' equity are snapshot balances that must be averaged across the period when you compare profit flows to balance sheet stocks. Profitability ratios are where those construction skills become judgment. A misclassified expense from Unit 3 still changes operating margin. A COGS policy choice from Unit 4 still changes gross margin. A balance sheet built without articulation checks from Unit 5 still distorts return on assets (ROA) and return on equity (ROE).

The failure mode is familiar. Managers celebrate revenue and ignore margin compression. Investors chase high ROE (return on equity, net income divided by average owners' equity) without noticing that leverage, not operations, created the return. Peers are compared on headline percentages without adjusting for accounting policy, seasonality, or business mix. This lesson teaches you to read the margin stack, compute ROA and ROE with proper averaging, preview the DuPont (DuPont analysis, a framework that splits ROE into margin, efficiency, and leverage components) three-factor decomposition, walk margin bridges that separate price, volume, and mix effects, and apply peer comparison cautions that keep ratio work honest. By the end, you should be able to explain not only what a ratio is, but where on the income statement the story broke and what a leader should do next.

The margin stack: gross, operating, and net

The margin stack is the sequence of profitability layers on a multi-step income statement. Each layer divides a subtotal by net sales (revenue after returns and discounts) to express profit as a percentage of each sales dollar. The stack works because it mirrors how managers run the business: first earn enough on the product itself, then cover overhead, then survive financing and taxes.

Gross profit equals net sales minus COGS. Gross margin equals gross profit divided by net sales. Gross margin answers the product economics question: after paying for what you sold, how many cents remain on each revenue dollar to fund rent, salaries, marketing, and profit? A retailer with 40% gross margin has more room to absorb a bad quarter than a competitor at 22%, assuming overhead is similar. From Unit 4, Lesson 3, you know COGS follows the matching principle (expenses recorded in the same period as the revenues they help generate): inventory cost leaves the balance sheet when goods are sold. If purchase costs rise faster than selling prices, gross margin compresses even when units move briskly.

Operating income (income from operations) equals gross profit minus operating expenses (costs to run the business that are not directly tied to each unit sold, such as selling salaries, advertising, administrative wages, and depreciation on operating assets). Operating margin equals operating income divided by net sales. Operating margin answers the core business model question: is the company earning money from its ordinary activities before financing and tax structure? Two competitors can have identical operating income but different net income if one carries more debt and therefore more interest expense (cost of borrowed money).

Net income is the bottom line after non-operating items and income tax expense (the accounting measure of tax on this period's earnings). Net margin equals net income divided by net sales. Net margin answers the shareholder question: after everyone else is paid, including lenders and the government, how much of each sales dollar remains for owners? Net margin is the most complete profitability percentage on the face of the P&L, but it is also the noisiest. A one-time asset sale gain, a tax credit, or a restructuring charge can move net margin without changing whether the core business improved.

Build the stack in order every time. Skipping straight to net margin is how teams miss a gross margin problem hidden inside a temporary tax benefit. Unit 5, Lesson 1 taught the multi-step format precisely because these subtotals exist. When you receive a single-step internal P&L, rebuild the stack manually: revenue, minus direct product cost, minus recurring overhead, then inspect interest, taxes, and unusual items last.

Period length matters as much as formula choice. The income statement describes activity over time (for the quarter ended, for the year ended), unlike the balance sheet's as of snapshot from Unit 5, Lesson 2. Comparing a December month to a March quarter without adjusting length misleads every margin percentage. Seasonality matters too. A toy maker's fourth quarter may show peak sales with different mix and promotion patterns than the first quarter. Trend analysis across comparable periods is therefore more informative than one isolated percentage.

When gross margin falls but operating margin is flat, overhead discipline may be masking product economics problems temporarily. When gross margin is stable but operating margin falls, OpEx (operating expenses) or depreciation may be bloating. When operating margin is stable but net margin falls, look below the line for interest, taxes, or non-operating losses. The stack turns a single "profit fell" headline into a diagnostic map tied directly to the accounts you learned to measure in Units 3 through 5.

ROA and ROE: profit relative to invested capital

Margins compare profit to sales. ROA and ROE compare profit to the capital base that produced it. That shift matters because a company can earn acceptable margins yet still disappoint owners if it deploys too much capital to generate those sales. Conversely, a firm with thin margins can look strong on ROA if it turns assets quickly and keeps the asset base lean.

Return on assets (ROA) equals net income divided by average total assets (the simple average of total assets at the beginning and end of the period, unless quarterly data justify a more precise weighted average). ROA asks: for each dollar tied up in the business, how many cents of profit did we earn this period? Total assets include cash, accounts receivable (AR, money owed by customers), inventory, property, plant, and equipment (PP&E, long-lived tangible operating assets), and other operating and non-operating resources. Because net income is an after-interest number, ROA reflects the combined effect of operations and financing on the asset base. For cleaner operating focus, some analysts use operating income divided by average assets, but introductory GAAP (Generally Accepted Accounting Principles, the U.S. rulebook for financial statements) work typically uses net income in ROA.

Return on equity (ROE) equals net income divided by average shareholders' equity (average of beginning and ending common equity, sometimes adjusted for preferred stock depending on the question). ROE asks: for each dollar owners have invested, how much profit did they earn this period? Equity is the residual claim after liabilities. It grows with retained profits and shrinks with dividends and losses, as you saw in Unit 5, Lesson 4 (Equity and the Statement of Changes in Equity).

Always average balance sheet denominators when the numerator covers a full period. Using year-end assets alone can distort ROA if the company acquired a competitor on December 31 or paid down debt mid-year. Unit 5 articulation discipline applies: if net income closed to retained earnings in Unit 3, Lesson 5 (Closing the Books), the equity denominator should reflect that flow across the year, not only the ending balance.

ROA and ROE answer different stakeholder questions. A lender focused on asset coverage cares whether earnings relative to the asset base support debt service, a theme developed further in Unit 6, Lesson 4 (Leverage and Solvency). An equity investor cares whether management deploys owner capital productively. A division president may have strong division margins but weak ROA if inventory and PP&E assigned to the division are bloated. That is why Unit 6, Lesson 3 (Efficiency and Asset Utilization) complements this lesson: margin tells you how much you keep per sale; turnover tells you how many sales you generate per asset dollar.

Relationship check: ROE exceeds ROA when the company uses liabilities to finance assets, because equity is smaller than assets. A firm with no debt would have ROE approximately equal to ROA if equity equals assets minus zero liabilities. Leverage amplifies ROE relative to ROA, which is powerful when returns are strong and dangerous when returns weaken. Never celebrate ROE without checking ROA. High ROE with mediocre ROA often means debt is doing the work, not operational excellence.

DuPont three-factor preview: separating margin, turnover, and leverage

DuPont analysis is a framework that decomposes ROE into three drivers managers can actually influence: profitability per sale, efficiency of asset use, and financial leverage. The three-factor model is a preview here; Unit 6, Lesson 4 will connect the leverage component to solvency ratios in more depth. For now, learn the algebra because it stops you from misdiagnosing performance.

The three-factor DuPont identity:

ROE = Net margin × Asset turnover × Equity multiplier

Where:

• Net margin = Net income ÷ Net sales (profitability layer from the margin stack)
• Asset turnover = Net sales ÷ Average total assets (efficiency layer previewing Lesson 3)
• Equity multiplier = Average total assets ÷ Average shareholders' equity (leverage layer previewing Lesson 4)

Verify the math collapses to ROE:

Net margin × Asset turnover × Equity multiplier

= (Net income ÷ Sales) × (Sales ÷ Avg assets) × (Avg assets ÷ Avg equity)

= Net income ÷ Avg equity

= ROE ✓

Notice that sales and average assets cancel in the middle. That cancellation is the point. ROE can rise because margins improved, because the company generated more sales per asset dollar, or because it financed the same assets with relatively less equity (more debt). Those are not interchangeable stories. A board should respond differently to each.

You can also write:

ROA = Net margin × Asset turnover

Because (Net income ÷ Sales) × (Sales ÷ Avg assets) = Net income ÷ Avg assets. ROA therefore combines the margin stack's bottom layer with operating efficiency. If ROA is weak, DuPont tells you to ask whether the problem is thin margins, slow asset turnover, or both. Lesson 3 will deepen turnover with DSO (days sales outstanding, average collection period on credit sales), DIO (days inventory outstanding, average days inventory is held), and fixed asset turnover. This lesson gives you the profitability half of that conversation.

DuPont is not an excuse to ignore risk. A higher equity multiplier means more assets are funded by liabilities. When margins fall in a leveraged firm, ROE can collapse faster than at a conservative peer because the same absolute profit change hits a smaller equity base, for better or worse. DuPont clarifies mechanism; it does not replace reading the balance sheet.

Margin bridges: price, volume, and mix

A margin percentage changed. Management wants a one-line explanation. Operations says volume was strong. Pricing says promotions were controlled. Finance says input costs rose. They can all be partially right because revenue and gross profit changes decompose into price, volume, and mix effects. A margin bridge (a step-by-step reconciliation that explains how a margin or profit line moved from one period to another) turns argument into arithmetic.

Start with the simplest revenue bridge. Suppose last year you sold 1,000 units at $100 each, for $100,000 revenue. This year you sold 1,100 units at $98 each, for $107,800 revenue. Revenue rose $7,800. How much came from volume versus price?

Volume effect (holding last year's price constant): Additional 100 units × $100 = +$10,000

Price effect (holding this year's volume at last year's price path): 1,100 units × ($98 − $100) = −$2,200

Check: +$10,000 − $2,200 = +$7,800 ✓

Volume pushed revenue up; price per unit pulled it down. Without the bridge, "revenue grew 7.8%" hides that the company discounted to move units.

Mix enters when the company sells multiple products or channels with different margins. Suppose Nordic Home sells furniture (high margin) and housewares (lower margin). If customers shift toward housewares, total revenue can rise while gross margin falls because the sales mix (the relative proportion of higher- and lower-margin products sold) moved toward lower-margin items. Mix is often the hardest effect to measure precisely because it requires detail below the consolidated P&L, but even a directional mix story prevents false blame on "cost inflation alone."

For gross margin bridges, work in dollars and percentages in parallel:

1. Compute last period and this period gross profit and gross margin.
2. Separate revenue change into price, volume, and mix using segment or SKU detail when available.
3. Separate COGS change into input cost per unit, volume, and mix (including FIFO versus weighted average policy effects from Unit 4, Lesson 3).
4. Reconcile the gross profit delta to the identified drivers and state what is unexplained (often rounding, inventory write-downs, or freight capitalization policy).

Managers use bridges in board decks because they connect ratio movement to decisions: list price increases, supplier renegotiation, promotion calendar changes, or SKU rationalization. A bridge also exposes when "growth" was bought with margin. If volume effect is strongly positive but price and mix effects are negative, the company may be trading margin for market share.

Bridges require consistent definitions. Net sales must exclude returns the same way both periods. COGS must follow the same inventory method unless you explicitly adjust for method changes disclosed in Unit 5, Lesson 5 (Notes, Disclosures, and Accounting Policies). If one period includes a LIFO (last-in, first-out, an inventory cost flow assumption) liquidation gain and another does not, the bridge must call that out or comparisons mislead.

Peer comparison cautions: when ratios lie politely

No ratio is meaningful in a vacuum. Peer comparison (evaluating a company's ratios against similar companies or industry medians) adds context, but naive peer tables create false confidence. Before you rank Nordic Home against Peer A and Peer B, apply a short discipline checklist.

Business model alignment. A home-goods retailer is not a software subscription business. Gross margins, capital intensity, and ROA norms differ by industry. Compare within the same NAICS (North American Industry Classification System, a standard industry code*) category or known competitor set, not against "the market" in general.

Accounting policy differences. Unit 5, Lesson 5 emphasized footnotes for a reason. One peer may depreciate store fixtures over seven years while another uses ten. One may capitalize more SG&A (selling, general, and administrative expenses) into implementation costs. COGS can differ with FIFO versus LIFO in inflationary periods. Policies can be legal under GAAP yet make margins non-comparable without adjustment.

Leverage and capital structure. ROE especially is polluted by capital structure. Peer B may show higher ROE than Nordic Home not because operations are superior, but because debt-to-equity (total liabilities relative to shareholders' equity) is higher and the equity multiplier is larger. Always pair ROE with ROA and preview leverage metrics from Lesson 4.

One-period noise versus trend. A single quarter with a supply chain charge, a litigation settlement, or a tax valuation allowance release distorts margins. Multi-year trends, ideally three to five years, reveal compression or expansion more honestly. Unit 1's periodicity assumption (activity is sliced into months, quarters, and years so performance can be compared) supports this habit.

Seasonality and lifecycle stage. A mature chain and a high-growth rollout company differ even in the same sector. The growth company may show lower net margin because it is opening stores and expensing pre-opening costs, while the mature peer looks richer on margin but grows revenue slowly.

Non-GAAP adjustments in press releases. Public peers often highlight "adjusted EBITDA" (earnings before interest, taxes, depreciation, and amortization, a non-GAAP rough measure of operating cash generation*) or other non-GAAP figures in earnings releases. Compare GAAP margins first, then read reconciliations in the 10-K (annual filed report with audited financials and footnotes) or 10-Q (quarterly update filing) before adopting adjusted peer numbers.

Geography and currency. Consolidated peers with different international exposure may report translation effects and tax rates that move net margin without changing local operating skill.

When comparison is done well, it produces questions, not verdicts. "Peer A runs 200 basis points higher gross margin: is that assortment, private label mix, or lower freight-in accounting?" Basis points (one hundredth of a percentage point, so 200 basis points = 2.00 percentage points) keep language precise when margins move by small amounts that still matter at scale.

Nordic Home Inc. is a fictional multi-channel retailer of furniture and housewares. The board wants to know why ROE fell even though sales grew from Year 1 to Year 3. You have audited summaries in millions ($M). Tax rate is 30% unless noted. Use average assets and average equity as given.

Part A: Income statement and balance sheet inputs

Income statement ($M):

Selected balance sheet averages ($M):

Build gross profit mentally before ratios: Year 3 gross profit = 120.0 − 78.0 = $42.0M. Year 1 gross profit = 100.0 − 60.0 = $40.0M. Absolute gross profit rose, but sales rose faster than gross profit, which is the first clue that margin percentages compressed.

Part B: Margin stack and capital returns

Year 3 margins:

Gross margin = (120.0 − 78.0) ÷ 120.0 = 42.0 ÷ 120.0 = 35.0%

Operating income = 120.0 − 78.0 − 32.0 = $10.0M

Operating margin = 10.0 ÷ 120.0 = 8.3%

Net margin = 4.9 ÷ 120.0 = 4.1%

Year 1 margins for trend context:

Gross margin = 40.0 ÷ 100.0 = 40.0%

Operating margin = (100.0 − 60.0 − 28.0) ÷ 100.0 = 12.0%

Net margin = 7.0 ÷ 100.0 = 7.0%

The stack shows compression at every layer, but the steepest drop from Year 1 to Year 3 is gross margin (40.0% to 35.0%, a 500 basis point fall). Operating margin fell 370 basis points (12.0% to 8.3%). Net margin fell 290 basis points (7.0% to 4.1%). Product economics and COGS pressure are the lead story; overhead added pain but did not start the fire.

Year 3 ROA and ROE:

ROA = 4.9 ÷ 95.0 = 5.2%

ROE = 4.9 ÷ 43.0 = 11.4%

Check direct: 4.9 / 43 = 0.11395 ≈ 11.4% ✓

Year 1 ROA and ROE:

ROA = 7.0 ÷ 80.0 = 8.8%

ROE = 7.0 ÷ 40.0 = 17.5%

ROE fell 610 basis points while ROA fell 360 basis points. Both declined, so this is not purely a leverage trick reversing. Operations and asset productivity weakened.

Part C: DuPont decomposition and diagnosis

Year 3 DuPont factors:

Net margin = 4.9 ÷ 120.0 = 4.1%

Asset turnover = 120.0 ÷ 95.0 = 1.26×

Equity multiplier = 95.0 ÷ 43.0 = 2.21×

ROE = 4.1% × 1.26 × 2.21 = 11.4% (approximate product; exact ROE uses 4.9/43) ✓

Year 1 DuPont factors:

Net margin = 7.0%

Asset turnover = 100.0 ÷ 80.0 = 1.25×

Equity multiplier = 80.0 ÷ 40.0 = 2.00×

ROE = 7.0% × 1.25 × 2.00 = 17.5% ✓

Asset turnover barely changed (1.25× to 1.26×). The equity multiplier rose modestly (2.00× to 2.21×), which would tend to increase ROE if margins had been flat. Instead, net margin collapsed from 7.0% to 4.1%. DuPont isolates the culprit: profitability per sales dollar, not asset speed and not leverage salvation.

Link back to Units 3 through 5: if Nordic Home delayed needed depreciation adjustments or understated COGS via inventory capitalization errors from Unit 4, margins would be temporarily overstated. Here the pattern is the opposite: reported margins fell, consistent with real input inflation, promotional pricing, or adverse mix toward lower-margin housewares. Footnotes from Unit 5, Lesson 5 would confirm whether COGS included abnormal freight or shrink charges.

Part D: Managerial read

Board question (BLUF: bottom line up front): Gross margin compression drove the ROE decline from 17.5% to 11.4%; leverage rose slightly and now amplifies pain rather than boosting returns. Fix sourcing, pricing, and mix before adding debt to fund inventory.

Operator actions: Negotiate supplier terms, revisit promotion calendar, shift assortment toward higher-margin private label, and audit COGS capitalization per Unit 4 inventory lessons. Lender read: ROA at 5.2% may still service moderate interest, but trend direction matters for covenants tied to net income. Investor read: Revenue growth without margin maintenance destroyed owner returns despite stable turnover.

SummitRoute Outdoor Co. sells two product lines: premium tents (high margin) and camp accessories (lower margin). Year 2 to Year 3, consolidated gross margin fell from 44.0% to 41.3%. Management claims "cost inflation." Marketing claims "strong unit growth." You bridge gross profit and compare SummitRoute to two peers.

Part A: Segment facts

Year 2:

Gross margin Year 2 = 13.2 ÷ 30.0 = 44.0% ✓

Year 3:

Gross margin Year 3 = 13.15 ÷ 31.81 = 41.3% ✓

Gross profit dollars essentially flat ($13.2M to $13.15M) while sales rose $1.81M. Margin fell because COGS and revenue grew faster than gross profit.

Part B: Price and volume bridge on revenue

Total revenue change = 31.81 − 30.0 = +$1.81M

Tents revenue change:

Volume effect at Year 2 price: (52 − 50) × $400 = +$0.80M

Price effect at Year 3 units: 52 × ($395 − $400) = −$0.26M

Net tents change = +$0.54M

Accessories revenue change:

Volume effect: (230 − 200) × $50 = +$1.50M

Price effect: 230 × ($49 − $50) = −$0.23M

Net accessories change = +$1.27M

Check: 0.54 + 1.27 = +$1.81M ✓

Volume added $2.30M; price reductions subtracted $0.49M. Revenue grew, but price was a headwind in both lines.

Part C: Mix effect on consolidated gross margin

Accessories share of units rose from 200/250 = 80% to 230/282 = 81.6%. Accessories carry lower gross margin (Year 3: 4.57/11.27 = 40.6% on accessories vs tents 8.58/20.54 = 41.8%). Shift toward accessories slightly hurt mix. A simplified mix narrative: even holding line-level margins constant, selling more lower-margin units pulls consolidated margin down.

COGS rate check: Consolidated COGS as percent of sales rose from 16.8/30.0 = 56.0% to 18.66/31.81 = 58.7%. Input inflation and line mix both matter; neither "cost alone" nor "volume alone" explains the story.

Part D: Peer table with cautions

SummitRoute trails TrailPeak on gross and operating margin and on ROA. ValleyMart shows the highest ROE but the highest debt-to-equity (2.4). ValleyMart's ROA (8.1%) exceeds SummitRoute's (6.0%), so part of ValleyMart's ROE edge is operational, but leverage still boosts ROE beyond ROA more aggressively than at SummitRoute. Peer ranking without reading capital structure would overpraise ValleyMart's risk profile.

Managerial read: SummitRoute should not copy ValleyMart's leverage to mimic ROE. It should attack tent COGS inflation, reduce accessories price promotions if elasticities allow, and rebalance mix toward tents where brand strength supports price. Peer gap to TrailPeak on gross margin (~210 basis points) is a concrete sourcing and assortment target.

HarborLight Tools Inc. (fictional), Year 2 data in $000s:

Tasks:

1. Compute gross margin, operating margin, and net margin. Show operating income and net income explicitly.
2. Compute ROA and ROE.
3. Compute DuPont three-factor components and verify they reproduce ROE.
4. A peer reports ROE of 18% with ROA of 9% and net margin of 6%. Which DuPont factor likely differs most from HarborLight if HarborLight's asset turnover is similar? Explain in prose.

Solution

1. Margin stack

Gross profit = 50,000 − 32,000 = 18,000

Gross margin = 18,000 ÷ 50,000 = 36.0%

Operating income = 18,000 − 11,000 = 7,000

Operating margin = 7,000 ÷ 50,000 = 14.0%

Pretax income = 7,000 − 1,000 = 6,000

Income tax = 25% × 6,000 = 1,500

Net income = 6,000 − 1,500 = 4,500

Net margin = 4,500 ÷ 50,000 = 9.0%

Check: margins stack logically: gross 36.0% > operating 14.0% > net 9.0% ✓

2. ROA and ROE

ROA = 4,500 ÷ 40,000 = 11.25%

ROE = 4,500 ÷ 25,000 = 18.0%

3. DuPont

Net margin = 9.0%

Asset turnover = 50,000 ÷ 40,000 = 1.25×

Equity multiplier = 40,000 ÷ 25,000 = 1.60×

ROE = 9.0% × 1.25 × 1.60 = 18.0% ✓

Exact: 4,500/25,000 = 18.0% ✓

4. Peer comparison explanation

Peer ROE = 18% with ROA = 9% and net margin = 6%. If HarborLight's asset turnover is similar at ~1.25×, peer implied equity multiplier ≈ ROE ÷ (net margin × asset turnover) ≈ 18% ÷ (6% × 1.25) ≈ 2.40×, well above HarborLight's 1.60×. The peer likely uses more financial leverage to lift ROE while running a lower net margin (6% vs HarborLight's 9%). HarborLight earns more per sales dollar and per asset dollar; the peer may look comparable on ROE only because debt magnifies a thinner return. This is exactly why DuPont and Lesson 4 solvency work belong in the same conversation.

ClearForge Analytics (fictional software with services) shows the following Year 1 to Year 2 change:

Subscription gross margin is stable at 75%. Services gross margin fell from 30% to 20% because of higher contractor costs. Tax and interest are zero for simplicity.

Tasks:

1. Compute gross margin, operating margin, and net margin for Year 2 (net income equals operating income here).
2. Build a simple mix narrative explaining part of the consolidated gross margin change.
3. Why might comparing ClearForge's gross margin to a pure subscription peer overstate ClearForge's product economics problem? Answer in one paragraph.

Solution

1. Year 2 margins

Gross profit = 114 − 40.6 = 73.4

Gross margin = 73.4 ÷ 114 = 64.4%

Operating income = 73.4 − 58 = 15.4

Operating margin = 15.4 ÷ 114 = 13.5%

Net margin = 13.5% (no interest or tax)

Year 1 check: Gross profit = 100 − 34 = 66; gross margin = 66.0%. Operating income = 66 − 52 = 14; operating margin = 14.0%. Consolidated gross margin fell 260 basis points while operating margin fell 50 basis points.

Segment tie-out Year 2: Subscription gross profit = 92 × 75% = 69.0; Services gross profit = 22 × 20% = 4.4; sum 73.4 = total gross profit ✓

2. Mix narrative

Subscription revenue share rose slightly from 80/100 = 80.0% to 92/114 = 80.7%, a modest mix shift toward higher-margin subscriptions. That mix shift alone would nudge consolidated gross margin up, but services margin collapsed from 30% to 20% because contractor costs rose. The services line therefore pulled blended gross margin down faster than mix improved it. Directionally, stable subscription economics plus weaker services delivery costs explain why consolidated gross margin fell even though the subscription line itself did not degrade.

3. Peer comparison paragraph

A pure subscription peer's gross margin reflects one business model with high incremental margin and low delivery COGS. ClearForge blends subscription (75% gross margin) with services (20% in Year 2). Comparing ClearForge's 64.4% consolidated gross margin to a peer at 78% overstates a "product" problem because ClearForge's services line legitimately carries lower margins and is growing. Peer comparison must separate segments or adjust for mix; otherwise management might overcorrect subscription pricing when the fix belongs in services staffing, contractor rates, or services pricing per Unit 5 segment disclosure habits in footnotes.

Key takeaways

• Build the margin stack (gross, operating, net) from the Unit 5 multi-step P&L before interpreting ROA or ROE.
• ROA and ROE require average balance sheet denominators and answer different capital deployment questions.
• DuPont splits ROE into net margin, asset turnover, and equity multiplier so you can see whether profitability, efficiency, or leverage drives returns.
• Margin bridges (price, volume, mix) connect ratio changes to operating decisions instead of one-word explanations.
• Peer comparisons demand industry, policy, leverage, and GAAP consistency; high ROE with average ROA is a leverage warning, not proof of superiority.

1. Pull a public company's last three annual filings (10-K) and chart gross, operating, and net margin trends. Note one footnote policy that might affect peer comparability.
2. Run DuPont three-factor decomposition for your company and one competitor. Which factor explains most of the ROE gap?
3. Continue to Lesson 3: Efficiency and Asset Utilization, where asset turnover and working-capital speed complete the profitability picture you started here.