How to Value Any Small Business: The SDE Multiple Framework

Most first-time buyers walk into acquisition conversations completely blind on valuation. Sellers throw out a number, buyers counter-offer on instinct, and both sides end up frustrated because neither is anchored to a shared framework. The result: deals die over price when they should not, or buyers overpay because they did not know how to push back.

The fix is simpler than most people realize. The vast majority of small business acquisitions — companies doing $500K to $10M in annual revenue — are valued using a single framework: Seller's Discretionary Earnings (SDE) multiplied by an industry-specific multiple. Learn this model and you will be able to walk into any deal conversation and know within fifteen minutes whether the asking price is defensible.

What Is SDE?

Seller's Discretionary Earnings is the total financial benefit that a single owner-operator derives from a business in a given year. It starts with net income (from the tax return or P&L), then adds back every expense that flows through the business for the owner's personal benefit — things a new buyer would not necessarily keep paying.

The SDE formula:

The logic is straightforward: a new buyer replacing the current owner would have all of those add-backs available to them as real economic benefit. SDE represents the true earning power of the business for its new owner, before financing costs and owner compensation decisions.

Why SDE — Not EBITDA — for Small Businesses

If you have spent any time in finance or M&A, you will know EBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization). EBITDA is the right metric for larger companies where professional management teams run operations independently of the owner. But in a small business where the owner is also the operator — managing sales, handling key accounts, running the day-to-day — EBITDA understates the actual earnings power available to a new owner-operator.

The key difference: SDE adds back the owner's salary entirely. EBITDA does not. For a business with $200K in net income and an owner paying themselves $150K per year, EBITDA would be roughly $200K (plus D&A and interest), while SDE would be closer to $350K. At a 3x multiple, that is the difference between a $600K and a $1.05M valuation. That gap is why sellers and buyers using different metrics end up talking past each other.

Use SDE for any business where a single owner-operator is central to the business. Use EBITDA for businesses with management teams that would stay in place post-acquisition.

The Multiple: Where the Negotiation Really Happens

Once you have a clean SDE number, you multiply it by a range that reflects how attractive, defensible, and transferable the business is. The multiple encodes everything risk-related: customer concentration, growth trajectory, how owner-dependent the business is, competitive moat, and how easy or hard it would be to replace the current operator.

General SDE multiple ranges for small businesses in 2026:

• 1.5x to 2.0x — High risk, owner-dependent, single-customer concentration, declining revenue, or operating in a shrinking industry. Often service businesses tied heavily to the seller's personal relationships.
• 2.0x to 3.0x — The most common range for Main Street businesses. Stable revenue, moderate owner dependency, no major customer concentration. Landscaping, cleaning services, restaurants, retail shops.
• 3.0x to 4.5x — Strong businesses with documented systems, diversified customer bases, recurring revenue, or growth momentum. Think B2B service companies, HVAC and plumbing with service contracts, niche manufacturing.
• 4.5x to 6x+ — Exceptional businesses. Strong recurring revenue (SaaS, subscription, membership), minimal owner dependency, clear growth levers, proprietary products or technology. These are rare in the sub-$10M range but do exist.

The SDE Quality Checklist

Multiples are not arbitrary — they reflect how a buyer would answer these questions about the business:

• Revenue concentration. Does any single customer represent more than 15-20% of revenue? If yes, the multiple compresses. The business is only as stable as that customer's loyalty.
• Recurring vs. transactional revenue. Businesses where customers return automatically (subscriptions, retainers, service contracts) deserve a higher multiple than businesses where every dollar of next year's revenue must be re-earned.
• Owner dependency. Could a qualified manager run this business without the seller? The harder it is to replace the owner, the lower the multiple should be — because the buyer is buying a job, not a business.
• Revenue trend. Three years of 10% growth supports a higher multiple than flat revenue or revenue that peaked two years ago. Always request three years of financials.
• Documented processes. Businesses with employee handbooks, SOPs, and systems that do not live only in the owner's head are more transferable and deserve a premium.
• Industry tailwinds. Is the market for this type of business growing, stable, or shrinking? Multiples for pest control (fragmented, essential, growing) are structurally different from multiples for print shops (secular decline).

Walking Through a Live Example

Suppose you are looking at a regional HVAC company. The seller provides three years of tax returns. Here is what you find:

• Net income: $120,000
• Owner's salary: $95,000
• Owner's truck (personal use, run through business): $14,400/year
• One-time legal expense (resolved lawsuit, not recurring): $22,000
• Depreciation and amortization: $18,000
• Interest expense: $11,000

SDE = $120,000 + $95,000 + $14,400 + $22,000 + $18,000 + $11,000 = $280,400

Now apply the multiple framework. The HVAC business has service contract revenue representing 35% of total revenue (recurring, positive), no customer over 8% of revenue (diversified, positive), three office staff who handle dispatch and scheduling (not purely owner-dependent, positive), revenue flat over three years (neutral), and the owner is the primary estimator for large jobs (some dependency, negative).

This business sits comfortably in the 2.75x to 3.25x range. At 3x, the valuation is $841,200. If the seller is asking $1.1M, you now have a specific, defensible basis to negotiate from — not intuition.

The Add-Back Audit: Where Buyers Get Burned

Not every add-back is legitimate, and sellers know it. Common add-back abuses to watch for:

• Family member salaries. The seller's spouse is on payroll for $60,000 but actually does real work in the business. If you are buying the business, you will need to either keep paying someone for that work or do it yourself. This is not a clean add-back.
• One-time revenues. A large, non-recurring contract that inflated last year's revenue. SDE should reflect normalized, repeatable earnings — not a windfall year the seller wants you to capitalize.
• Deferred maintenance. Capital expenses that were postponed to make the financials look cleaner. If the fleet has not been replaced in six years, that is a liability, not an add-back.
• Working capital manipulation. Accounts receivable stretched, accounts payable accelerated, or inventory run down before a sale to inflate short-term cash. Always look at the balance sheet trend, not just the income statement.

When you find inflated add-backs, do not walk away — recalculate. A true SDE of $210,000 instead of $280,000 changes your offer significantly, and you will have the numbers to justify the adjustment.

SDE Is a Starting Point, Not a Final Answer

The SDE multiple framework gives you a principled basis for the price conversation, but valuation is ultimately the intersection of numbers and negotiation. A motivated seller, a favorable financing structure, or a seller willing to carry a meaningful note will move the effective price down even when the headline number does not change. The best acquirers treat valuation as one dimension of a multi-dimensional deal — not the only variable on the table.

The buyer who understands SDE better than the seller controls the conversation. Not because they can low-ball — but because they can explain exactly why the number they are offering is fair.

Valuation mastery is one piece of the acquisition toolkit. For the full system — including how to pair seller financing with your offer, structure earn-outs to bridge valuation gaps, and conduct due diligence that protects you — get Creative Acquisitions. Every framework in this post comes straight from the book.