# Margins that matter: gross margingross marginGross margin is the share of revenue left after subtracting the direct cost of producing goods or services, expressed as a percentage of revenue.Voir la définition complète →, EBITDAEBITDAEBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization) measures a company's operating profitability before financing and accounting decisions, used to compare core performance across firms.Voir la définition complète → and PEP explained
A senior partner at a mid-size law firm turns down a merger with a larger rival, even though the combined firm would triple revenue. Why? Because her profit-per-equity-partner (PEP), the number that funds her mortgage and her retirement, would likely fall as she absorbs the acquired firm's lower-margin practice groups. In professional services, revenue is vanity. PEP, and the margins that build it, is what partners actually watch.
This lesson walks through the three numbers that matter most when reading a professional services P&L (profit and loss statement): gross margingross marginGross margin is the share of revenue left after subtracting the direct cost of producing goods or services, expressed as a percentage of revenue.Voir la définition complète →, EBITDAEBITDAEBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization) measures a company's operating profitability before financing and accounting decisions, used to compare core performance across firms.Voir la définition complète →, and PEP. All three measure profitability, but each answers a different question, and firms game them in different ways.
Law firms, consultancies, and accounting firms sell time and expertise, not products. Their biggest cost is people, not materials. This changes what "margin" means.
In a manufacturing business, gross margingross marginGross margin is the share of revenue left after subtracting the direct cost of producing goods or services, expressed as a percentage of revenue.Voir la définition complète → reflects factory efficiency. In a law firm, the equivalent metric reflects how much of what a client pays actually reaches the partnership, versus what gets absorbed by associate salaries, benefits, and support staff.
That's why professional services firms report a distinct set of metrics that outsiders often confuse.
Gross marginGross marginGross margin is the share of revenue left after subtracting the direct cost of producing goods or services, expressed as a percentage of revenue.Voir la définition complète → = (Revenue − direct cost of delivering the service) ÷ Revenue.
In professional services, "direct cost" usually means the fully-loaded cost of the fee-earners (lawyers, consultants, auditors) actually doing the billable work: salaries, payroll taxes, benefits.
Worked example:
A consulting engagement bills $500,000. The consultants staffed on it cost the firm $180,000 in salary and benefits for the hours worked.
Gross marginGross marginGross margin is the share of revenue left after subtracting the direct cost of producing goods or services, expressed as a percentage of revenue.Voir la définition complète → = ($500,000 − $180,000) ÷ $500,000 = 64%
Benchmark estimates for 2025-2026: top-tier strategy consulting (McKinsey, BCG, Bain) engagement-level gross margins are commonly estimated in the 55-70% range; large law firm gross margins (before firm overhead) often run higher, in the 65-75% range, reflecting high leverage (many junior associates billed out at multiples of their cost) (estimate, industry commentary, no single public disclosure exists since most major firms are private partnerships).
Gross marginGross marginGross margin is the share of revenue left after subtracting the direct cost of producing goods or services, expressed as a percentage of revenue.Voir la définition complète → tells you whether the *delivery model* is healthy. It says nothing yet about rent, marketing, technology, or partner compensation.
EBITDAEBITDAEBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization) measures a company's operating profitability before financing and accounting decisions, used to compare core performance across firms.Voir la définition complète → (earnings before interest, taxes, depreciation, and amortizationearnings before interest, taxes, depreciation, and amortizationEBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization) measures a company's operating profitability before financing and accounting decisions, used to compare core performance across firms.Voir la définition complète →) strips out financing and accounting choices to show core operating profitability. It's the standard metric used when private equity or investors compare firms, especially relevant now that PE has moved aggressively into accounting and law-adjacent services (for example, PE-backed roll-ups of CPACPACost Per Acquisition: the total cost to generate one customer or conversion, computed by dividing total spend by the number of acquisitions.Voir la définition complète → firms in the US, and litigation funders eyeing law firm economics in some jurisdictions).
EBITDAEBITDAEBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization) measures a company's operating profitability before financing and accounting decisions, used to compare core performance across firms.Voir la définition complète → = Revenue − Operating expenses (excluding interest, tax, depreciation, amortization)
Worked example, continuing above:
The consulting firm's total revenue for the year is $50 million. Direct delivery costs are $20 million (gross margingross marginGross margin is the share of revenue left after subtracting the direct cost of producing goods or services, expressed as a percentage of revenue.Voir la définition complète → 60%). Overhead, office space, non-billable staff, marketing, technology, comes to $18 million.
EBITDAEBITDAEBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization) measures a company's operating profitability before financing and accounting decisions, used to compare core performance across firms.Voir la définition complète → = $50M − $20M − $18M = $12M
EBITDAEBITDAEBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization) measures a company's operating profitability before financing and accounting decisions, used to compare core performance across firms.Voir la définition complète → margin = $12M ÷ $50M = 24%
Benchmark estimates: mid-market consulting and accounting firms often target EBITDAEBITDAEBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization) measures a company's operating profitability before financing and accounting decisions, used to compare core performance across firms.Voir la définition complète → margins in the 15-25% range (estimate, common industry advisory benchmarks); PE-backed professional services roll-ups often underwrite to 20%+ post-integration.
EBITDAEBITDAEBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization) measures a company's operating profitability before financing and accounting decisions, used to compare core performance across firms.Voir la définition complète → is the metric buyers use because it's comparable across firms with different debt levels and tax jurisdictions, useful when evaluating potential lateral team acquisitions or firm mergers on both sides of the Atlantic.
Profit-per-equity-partner (PEP) is specific to partnership structures (law firms, some consultancies, accounting firms). It answers: after all costs, how much profit does each equity partner (an owner-partner, as opposed to a salaried "non-equity" partner) take home before individual tax?
PEP = Total distributable profit ÷ Number of equity partners
Worked example:
A law firm generates $200 million in revenue. After paying all costs, including associate salaries, non-equity partner salaries, rent, and support staff, but before equity partner distributions, $80 million remains as distributable profit. The firm has 100 equity partners.
PEP = $80,000,000 ÷ 100 = $800,000
This is the number that appears in industry rankings like the American Lawyer's Am Law 100 and drives lateral hiring decisions: a partner with a strong book of business will move firms if a rival firm's PEP, and thus expected personal compensation, is meaningfully higher.
Benchmark estimates (2024-2025 reporting cycles, figures vary by year and source):
PEP is why firms are cautious about growing headcount for its own sake. Adding equity partners dilutes PEP unless they bring proportionate profit. This is also why firms increasingly use non-equity partner tiers: a way to reward senior staff without diluting the equity pool's PEP.
Vérification des acquis
1. Why did the senior partner in the opening example reject a merger that would triple revenue?
2. In a professional services firm, what does gross margin primarily measure?
3. Why is 'revenue' described as misleading in professional services firms specifically?
4. Select ALL correct answers about why gross margin, EBITDA, and PEP are described as answering 'different questions' in a professional services P&L.
Sélectionnez toutes les réponses correctes.
5. Select ALL correct answers about what counts as 'direct cost' when calculating gross margin for a professional services engagement.
Sélectionnez toutes les réponses correctes.
Think of it as a funnelfunnelThe customer journey from awareness to purchase, typically Awareness, Interest, Consideration, Decision, Action, with prospects narrowing at each stage.Voir la définition complète →:
1. Gross marginGross marginGross margin is the share of revenue left after subtracting the direct cost of producing goods or services, expressed as a percentage of revenue.Voir la définition complète → tells you if the core service delivery is priced and staffed correctly.
2. EBITDA margin tells you if the whole operation, including overhead, is disciplined.
3. PEP tells you how that operating profit is ultimately shared among the owners.
A firm can have excellent gross margingross marginGross margin is the share of revenue left after subtracting the direct cost of producing goods or services, expressed as a percentage of revenue.Voir la définition complète → but poor PEP if it has too many equity partners relative to profit generated, a common problem after aggressive lateral hiring or a merger. This is exactly the dynamic in the opening scenario: tripling revenue through merger looks good on a gross margingross marginGross margin is the share of revenue left after subtracting the direct cost of producing goods or services, expressed as a percentage of revenue.Voir la définition complète → or EBITDAEBITDAEBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization) measures a company's operating profitability before financing and accounting decisions, used to compare core performance across firms.Voir la définition complète → basis, but if the acquired firm's partners are added to the equity pool without matching profit contribution, existing partners see their personal PEP fall.
Conversely, some firms deliberately keep the equity partner tier small and promote heavily into non-equity or "counsel" roles, protecting PEP even as the firm grows.
Leverage, the ratio of associates (or junior consultants) to partners, is a major PEP driver. More leverage generally means more billable hours generated per partner, boosting distributable profit, as long as utilization (the percentage of available hours actually billed to clients) stays high.
Simplified leverage impact:
Firm A: 1 partner : 3 associates, associates billed at 3x cost → higher profit pool per partner
Firm B: 1 partner : 1 associate, same billing multiple → lower profit pool per partner, all else equalThis is why firms report leverage ratios alongside PEP in benchmarking studies, and why a firm's utilization rate (see the Thomson Reuters Legal industry reports for methodology) matters as much as headline billing rates.
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