Why SDE multiples differ so much by industry

An SDE multiple that seems rock-solid in one industry is completely out of market in another. A staffing firm trading at 5x SDE looks cheap until you compare it to a general contracting shop at 2.5x—or learn the staffing shop has zero recurring revenue while the contractor has three-year fixed-price contracts locked in. The same normalized earnings number yields wildly different valuations depending on industry structure, cash flow predictability, customer concentration, and growth appetite. This isn’t chaos—it’s a rational market pricing specific risks and opportunities. Understanding the mechanics behind these spreads separates buyers who overpay from those who negotiate from first principles.

The Core SDE Multiple Drivers That Move the Needle

SDE multiples cluster around industry characteristics, not arbitrary ranges pulled from broker comparables. The primary variables are customer concentration, revenue predictability, scalability, and the labor intensity baked into the business model.

Customer concentration and contract stickiness move multiples more than any other single factor. A software-as-a-service company with 40% of revenue locked into annual contracts with a 92% net retention rate commands a 6–8x multiple. The same EBITDA number—say, $500k—earned by a managed IT services firm with 15 large enterprise clients and one-year renewal rates earns 4.5–6x. Now shrink that to a local janitorial service with 35 small commercial clients and month-to-month agreements: you’re looking at 2.5–3.5x. The denominator is the same SDE figure; the numerator—the multiple—moves because the buyer is pricing different probability and effort to retain that revenue stream.

Consider a worked scenario: two home services businesses each with $400k SDE. One is a roofing contractor with four large commercial accounts (55% of revenue) and a mix of residential one-offs. The other runs a residential HVAC maintenance club with 280 monthly subscribers and automatic renewal. The roofing shop likely trades at 2.8–3.2x ($1.12M–$1.28M valuation). The HVAC club, with its predictable recurring base, fetches 4.2–5x ($1.68M–$2M). Both earned the same SDE; the difference is entirely customer risk and renewal mechanics.

Labor Intensity and Margin Profile Matter More Than Growth Rate

A common buyer mistake is assuming high growth automatically justifies a premium multiple. A digital marketing agency growing 40% year-over-year but operating at 35% EBITDA margins with founder-dependent client relationships still trades lower than a slower-growing staffing firm with 18% margins but 70% gross revenue from long-term managed accounts.

Labor-heavy businesses—staffing agencies, cleaning services, field technicians—face built-in margin caps. Revenue scales roughly in line with headcount. A staffing business at $2M revenue with 12 recruiters has much less leverage than a software company at $2M revenue with the same SDE. That software company can double revenue with 20% incremental headcount; the staffing firm needs roughly 100% more people. Buyers price this differently. Staffing multiples historically run 3.5–5x EBITDA. SaaS 6–9x. The gap isn’t greed—it’s math.

Industry-Specific Multiple Anchors and What They Mean

B2B Services (consulting, staffing, marketing agencies): 3.5–5.5x SDE. The spread depends entirely on customer diversification and whether contracts are project-based (lower end) or retainer/managed services (higher end). A recruiting firm with three retained search contracts worth 40% of annual revenue and a churn rate below 10% sits at 5.2x. A project-based digital agency with contract length averaging eight weeks sits at 3.8x.

Software and Recurring Revenue: 5.5–9x SDE, occasionally higher for niche vertical SaaS with strong moats. The driver is predictability and zero marginal cost of serving additional customers. A $600k EBITDA payroll software company with 87% net revenue retention and 92% customer retention hits 7–8x ($4.2M–$4.8M). A one-time license software firm at identical EBITDA sits at 5–6x.

Home Services and Trade (HVAC, electrical, plumbing, roofing): 2.5–4x SDE. Owners are often customer-facing, so transition risk is baked in. Recurring revenue models (maintenance contracts, service clubs) float toward 4x; pure project work sits at 2.5–3x. A plumbing company with 55% of revenue from maintenance contracts worth $350k runs 3.8–4.2x. A one-off residential/commercial plumber at the same SDE runs 2.8–3.2x.

E-commerce and Fulfillment: 3–5x SDE depending on supplier concentration and channel mix. Amazon seller businesses with 60%+ revenue from Amazon multisource sit at the lower end (3–3.5x) due to platform dependence. Diversified sellers across three-plus channels with owned email audiences sit at 4–5x.

Niche Manufacturing and Fabrication: 2.5–4.5x SDE. Revenue quality varies dramatically. A shop with long-term OEM supply contracts at gross margins of 52% and repeat customers covering 70% of output runs 4–4.5x. A job shop with spot contracts and 35% margins runs 2.5–3.2x.

Working Backward From Multiple to Identify Red Flags

A multiple that feels high or low often reveals hidden business issues worth checking before you spend money on a formal Quality of Earnings engagement. If a business is trading at a multiple 1.5+ points below comparable recent transactions, ask why. Common culprits:

• Pending customer loss. If the seller is offloading a business at 2.8x when the industry norm is 4x, the seller may know that a large account is at risk. Verify customer retention assumptions before signing an LOI.
• Owner dependence that isn’t obvious. The seller runs $600k EBITDA but invoices under the owner’s personal brand, or major clients specifically request the owner’s work. The business is worth far less to a new buyer until that relationship is rebuilt.
• Undisclosed churn or margin pressure. A services business with flattening revenue and rising labor costs may show stable SDE today but declining SDE in year two. The market prices that in.
• Working capital or asset intensity not fully captured. A contracting business might have high SDE but require $80k in seasonal working capital (unbilled invoices, materials) that the normalized calculation didn’t flag.

Using Multiples as a Sanity Check, Not a Price Target

Normalized SDE is the foundation for valuation, but the multiple isn’t set in stone—it’s a starting point for questions. A buyer reviewing a $1.2M SDE business should never accept “the industry multiple is 4.5x, so it’s worth $5.4M” as analysis. Instead:

• Verify the comparables. Are they truly comparable in customer mix, contract type, and growth profile? (A staffing firm growing 3% is not comparable to one growing 28%.)
• Adjust the multiple for specific risks. If the business has no customer concentration risk but depends heavily on the founder, you might offer 4.1x instead of 4.5x, all else equal.
• Check margin quality. A business with 18% EBITDA margins from a 40% gross margin is more stable than one with 18% EBITDA from 52% gross margin and aggressive cost cutting.
• Review growth trajectory. If recent revenue is flat but gross profit is declining, the 4.5x multiple is a ceiling, not a floor.

Outsourcing Processing calculates and organizes normalized EBITDA and SDE data so you can compare multiple scenarios side-by-side and stress-test assumptions about revenue quality and add-back legitimacy. The platform lets you see how add-backs, customer concentration, and margin trends shift the normalized picture—giving you the foundation to negotiate from realistic benchmarks rather than broker-supplied ranges.

Frequently Asked Questions

Why does the same SDE earn a 3.5x multiple in one industry and 7x in another?

The SDE number reflects earnings, not probability or persistence. A $500k SDE in a staffing business with month-to-month client agreements and high churn carries more buyer risk and lower growth leverage than $500k SDE in a SaaS business with annual contracts and 90%+ renewal rates. The multiple accounts for revenue quality, scalability, and the effort required to retain earnings in year two. Markets reward predictability and scalability, penalize concentration and dependence.

Should I use industry multiples from a broker report as my opening offer?

Industry multiples are a conversation starter, not a negotiating foundation. They aggregate recent deals but don’t account for your specific business’s customer concentration, margin trends, or growth profile. A business at the 25th percentile of its peer group might justify a multiple 0.5–1 point below the median. Use broker ranges to calibrate the ballpark, then adjust based on fundamentals: contract type, customer count and size, churn rates, and whether revenue is scaling faster or slower than the industry average.

Can a business deserve a lower multiple if margins are rising?

Rising margins might indicate rising profitability, but they can also signal cost-cutting that isn’t sustainable post-acquisition. If EBITDA margin expanded 4 points year-over-year but gross margin is flat, the seller may have deferred maintenance, cut training, or reduced marketing spend. Verify that margin expansion reflects business improvement (better pricing power, scale efficiency) rather than one-time cuts. A buyer will often offer a lower multiple for a business that achieved SDE through unsustainable reductions because the baseline SDE is less stable.

How much does customer concentration risk change the SDE multiple?

High customer concentration (top three customers representing 50%+ of revenue) typically compresses the multiple by 0.5–1.5 points compared to a diversified peer. A business with 60% revenue concentration might trade at 3.2x instead of 4.5x, assuming all other factors are equal. This doesn’t mean the deal is off-limits—it means you’re pricing in higher risk and likely building transition support or earnout terms into the purchase price to protect yourself if a major customer leaves within twelve months of close.

Do add-backs affect the SDE multiple or just the normalized EBITDA number?

Add-backs adjust the normalized earnings, but the multiple reflects the quality of those add-backs. If a seller adds back $50k in personal expenses (country club dues, vehicle insurance) that truly won’t recur post-close, the normalized EBITDA is legitimately higher—but the multiple might compress slightly because the buyer is factoring in execution risk or testing whether the add-back is defensible. If a seller tries to add back $80k in compensation for an owner who will stay post-close, the buyer won’t accept the add-back at all, and the SDE (and multiple) remains low. The multiple doesn’t change—the numerator does.

This article is educational and does not constitute M&A, investment, or accounting advice — confirm findings with a licensed CPA or M&A advisor before making an offer.

This article is educational and does not constitute M&A, investment, or accounting advice — confirm findings with a licensed CPA or M&A advisor before making an offer.

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