What SDE measures, and who it is for
Seller's discretionary earnings is the total financial benefit a single full-time owner-operator receives from a business in a year. It starts at net profit and adds back the things that exist because of how this particular owner runs the business rather than because the business requires them.
The logic is straightforward. A buyer stepping into an owner-operated business will take the owner's salary themselves, will not run their car through the business, and will not employ the owner's spouse in a role that does not exist. Those costs disappear on a change of ownership, so a buyer wants to see earnings with them removed.
SDE assumes one working owner. Once a business is large enough to be run by hired management, or has multiple owners drawing salaries, SDE overstates what a financial buyer receives — they still have to pay someone to do the job. Around $1M of SDE or roughly $5M of revenue, buyers switch to EBITDA with market-rate management compensation left as an expense.
Building SDE from the tax return
SDE is built from a filed tax return rather than a management report, because the return is the document a buyer and their lender will trust. The walk looks like this on a business with $2.2M of revenue.
| Line | Item | Amount |
|---|---|---|
| Start | Net income per return | $142,000 |
| Add | Owner compensation (officer comp) | $220,000 |
| Add | Owner payroll taxes | $16,800 |
| Add | Depreciation and amortization | $38,000 |
| Add | Interest expense | $18,000 |
| Add | Owner health insurance and retirement | $24,000 |
| Add | Personal vehicle run through the business | $11,400 |
| Add | One-time legal settlement | $22,000 |
| Less | Non-owner family member below market | ($18,000) |
| Total | Seller's discretionary earnings | $474,200 |
Two things in that table are worth noticing. Interest is added back because it reflects how the current owner financed the business, not what it costs to operate. And the final line is a deduction — a family member paid below market has to be normalized upward, because the buyer will have to pay a real wage.
An SDE calculation containing only add-backs reads as advocacy. Almost every real business has of least one adjustment that goes the other way: below-market rent from a related party, a family member on a friendly wage, deferred maintenance. Including them makes the rest of your add-backs more believable, which is worth more than the dollars they cost.
Which add-backs survive diligence
Buyers and their lenders remove add-backs they cannot verify or do not accept. The distinction is not about honesty — it is about documentation and whether the expense genuinely disappears.
| Add-back | Usual outcome | What it needs |
|---|---|---|
| Owner compensation | Accepted | Officer comp line on the return |
| Owner health, retirement | Accepted | Payroll records |
| Depreciation, interest | Accepted | Return and Form 4562 |
| One-time legal or moving | Usually accepted | An invoice, and absence in other years |
| Personal vehicle | Usually accepted | Mileage log or a clear pattern |
| Owner travel | Often challenged | Proof it was not customer-facing |
| Marketing 'we won't need' | Usually removed | Rarely survives |
| Above-market rent to owner | Accepted | A market rent appraisal |
An add-back you can document survives. An add-back you assert does not — and the ones that get struck cause the buyer to re-examine the ones that were fine.
This is the practical risk of aggressive add-backs. A buyer who removes three of your twelve adjustments does not simply subtract those three — they start testing the other nine, and they revise their view of everything else you have told them. A defensible $420,000 is worth more than a contested $480,000, because the first closes and the second reopens the price.
SDE against EBITDA, on the same business
The two measures differ by one thing: whether owner compensation is treated as an expense. That single difference produces very different numbers and very different multiples, which is why comparing an SDE multiple to an EBITDA multiple is meaningless.
| Measure | Calculation | Amount |
|---|---|---|
| SDE | As built above | $474,200 |
| Less | Market manager salary | ($130,000) |
| Adjusted EBITDA | What a financial buyer sees | $344,200 |
At a 3.0× SDE multiple the business is worth $1,422,600. At a 4.5× EBITDA multiple it is worth $1,548,900. Both are defensible, and the gap between them is why the measure has to be stated whenever a multiple is quoted.
01Related toolBusiness Valuation CalculatorValue on SDE or EBITDA with add-back normalisation and industry ranges.→02Related toolTax Return AnalyzerWork an 1120-S into adjusted EBITDA and SDE line by line.→What moves the multiple
Most small businesses trade in a two to four times SDE range. Where a specific business sits within that range has less to do with the industry than with how much risk transfers to the buyer.
- Owner dependence — if revenue follows the owner, the multiple compresses regardless of how good the numbers look.
- Customer concentration — a single customer above roughly a third of revenue is the most common cause of a discount or an earnout.
- Recurring revenue — contracted or genuinely repeat revenue is worth materially more than project work at the same margin.
- Growth and trend — three years of growth prices differently from three flat years, and a declining final year is the hardest thing to sell through.
- Documentation — clean financials and written processes reduce perceived risk, and perceived risk is what the multiple is measuring.
- Size — larger businesses attract more buyers, including institutional ones, and multiples generally rise with size.
It is a negotiated conclusion. Industry data gives you a range, not a number, and the same business will attract different multiples from a strategic buyer, a financial buyer and an individual operator — because they are buying different things. Treat published multiples as the start of the argument, not the end of it.