Two business owners with identical companies can arrive at very different valuations. Same revenue. Same earnings. Same growth trajectory. The difference is which earnings metric they used to get there — and one of those owners is leaving real money on the table.
For business owners preparing to sell, the choice between Seller's Discretionary Earnings (SDE) and Earnings Before Interest, Taxes, Depreciation, and Amortization (EBITDA) is not academic. It determines what number a buyer anchors on, what multiple gets applied to that number, and ultimately what the business sells for.
This article is about how to know which one applies to your business — and why getting it right matters more than most owners realize.
What each metric actually measures
Both SDE and EBITDA are attempts to answer the same underlying question: what does this business actually earn, separate from accounting choices and ownership-specific decisions? They get there differently.
EBITDA starts with net income and adds back interest, taxes, depreciation, and amortization. The goal is to show the company's operating earnings independent of its capital structure (interest), tax situation (taxes), and historical investment decisions (depreciation and amortization). EBITDA assumes the buyer will install professional management and pay market-rate compensation for it.
SDE starts with net income and adds back everything EBITDA does — plus the owner's full compensation, benefits, personal expenses run through the business, and any other discretionary spending that benefits the owner rather than the operation. SDE assumes the buyer will be an owner-operator who replaces the seller and captures all the same financial benefits the seller does.
The core difference is owner compensation. EBITDA treats it as a real cost of running the business. SDE adds it back as a discretionary benefit that transfers to the new owner.
When each one applies
The choice between SDE and EBITDA is not a matter of preference. It is a function of business size and how the business is managed.
SDE is the standard metric for owner-operated businesses, typically those valued under $5 million. In these businesses, the owner is actively involved in operations, draws compensation that reflects ownership rather than market rate, and runs personal expenses through the company. The buyer pool is dominated by individual buyers, search funds, and small private equity groups who plan to operate the business themselves or install a single replacement operator.
EBITDA becomes the standard metric for management-driven businesses, typically those valued above $5 million. In these businesses, professional management is already in place, the owner's role is more strategic than operational, and a meaningful management team exists below the owner. The buyer pool shifts toward private equity, strategic acquirers, and institutional capital that will keep the existing management structure intact.
The transition between the two is not a hard line. Businesses in the $3 million to $7 million range can reasonably be evaluated on either metric depending on how the company actually operates. A $4 million business with a strong general manager, established middle management, and an owner who works 20 hours a week is an EBITDA business. A $4 million business where the owner handles sales, manages key accounts, and signs every check is an SDE business.
The math, with numbers
Here is what the difference looks like in practice. Consider a hypothetical business with the following financials:
- Revenue: $3,000,000
- Cost of goods sold: $1,800,000
- Operating expenses: $850,000
- Owner compensation included in operating expenses: $200,000
- Owner's personal expenses run through the business: $40,000
- Interest expense: $25,000
- Depreciation: $50,000
- Net income: $35,000
EBITDA calculation: Net income ($35,000) + interest ($25,000) + taxes (assume $0 for an S-corp) + depreciation ($50,000) = $110,000
SDE calculation: EBITDA ($110,000) + owner compensation ($200,000) + owner's personal expenses ($40,000) = $350,000
Same business. Same financials. EBITDA of $110,000. SDE of $350,000.
Now apply typical multiples. For a business of this size and quality, SDE multiples in the small business market run 2.5x to 3.5x. EBITDA multiples for businesses transitioning into the lower middle market run 4x to 6x.
| Metric | Earnings | Multiple Range | Valuation Range |
|---|---|---|---|
| SDE | $350,000 | 2.5x – 3.5x | $875,000 – $1,225,000 |
| EBITDA | $110,000 | 4x – 6x | $440,000 – $660,000 |
The gap is not subtle. Using EBITDA on a business that should be valued on SDE produces a valuation roughly half of what the business is actually worth. Using SDE on a business that should be valued on EBITDA does the reverse — and signals to sophisticated buyers that the seller does not understand their own market.
Why the choice matters more than the math
The metric you use shapes more than the number. It shapes the entire negotiation.
When a seller presents SDE, they are signaling to the market that this is a business for an owner-operator buyer. The conversation centers on lifestyle, total cash flow to the owner, and the buyer's ability to step into the role. The buyer pool is broader, the financing is often SBA-backed, and the negotiation tends to focus on transition support and seller financing.
When a seller presents EBITDA, they are signaling that this is an institutional-grade business. The conversation centers on operating margins, growth trajectory, and the management team's ability to execute without the owner. The buyer pool is narrower but more sophisticated, the financing is conventional or PE-backed, and the negotiation tends to focus on working capital adjustments, earnouts, and management retention.
Choosing the wrong metric does not just produce the wrong valuation. It attracts the wrong buyers and sets up the wrong negotiation.
What to do if you are not sure
Most owners of businesses under $5 million can stop wondering: SDE is almost certainly the right metric. The question only gets interesting in the gray zone between $3 million and $7 million in valuation.
In that gray zone, the test is not the financial threshold. It is the operational reality:
- If the owner could leave for 60 days and the business would continue to operate without meaningful disruption, EBITDA is defensible.
- If the owner's departure for 60 days would create real operational risk, SDE is the right metric.
- If the business has a general manager or COO with full operational authority, EBITDA is defensible.
- If the owner is the sales lead, the operations lead, or the key customer relationship, SDE is the right metric.
The most useful exercise for a seller in this range is to ask their CPA or transaction advisor to model the business both ways and compare the resulting valuations against the universe of likely buyers. Sometimes the answer is to present both — leading with the metric that fits the buyer pool and providing the other for context.
A Straight Answer
Most business owners preparing to sell a company under $5 million should be using SDE. Not because EBITDA is wrong as a concept, but because using EBITDA on an owner-operated business systematically undervalues it.
The recast — moving from net income through SDE — is not aggressive. It is correct. It shows the business as it actually performs for an owner-operator, which is what the buyer pool for businesses this size is actually buying.
Where this fits in the larger valuation picture
Choosing the right earnings metric is the first decision in valuation, but it is not the only one. Once you know whether to use SDE or EBITDA, the next questions are about the multiple — what range your business commands, what factors push the multiple up or down, and how to defend the number to a buyer or lender.
For a complete walk-through of multiples, the qualitative factors that drive them, and how buyers actually evaluate small business valuations, see our guide on how to value your business before you sell.
The earnings number you choose is the foundation. Get it right, and the rest of the valuation conversation rests on solid ground. Get it wrong, and every conversation that follows starts from the wrong place.
Frequently asked questions
Can I use both SDE and EBITDA in my CIM?
Yes, and for businesses in the gray zone between $3 million and $7 million, presenting both is often the strongest approach. Lead with the metric that matches your buyer pool and provide the other for context. Sophisticated buyers will calculate both anyway — showing you have done the work signals competence.
What about adjusted EBITDA?
Adjusted EBITDA is EBITDA with one-time, non-recurring, or non-operational expenses added back. It is the standard metric in middle-market and PE transactions. For owner-operated businesses, the equivalent adjustment work happens in the SDE recast.
Do banks lend on SDE or EBITDA?
SBA lenders working with small business acquisitions typically underwrite to SDE for businesses in the under $5 million range. Conventional lenders and PE financing typically work from EBITDA. The financing source often follows the same logic as the metric choice.
Is SDE just EBITDA plus owner salary?
The owner salary add-back is the largest component, but SDE also adds back personal expenses run through the business, owner benefits (health insurance, vehicle, phone), and other discretionary spending. A clean SDE recast documents every add-back with supporting evidence — which becomes critical when a buyer's accountant verifies the numbers in due diligence.