What Is SDE and Why It Matters More Than EBITDA
SDE, seller's discretionary earnings, is the total financial benefit a single owner-operator takes from a business in a year: the profit, plus the owner's own pay, plus the personal and one-time expenses the business absorbs. For businesses under roughly five million dollars in earnings, SDE, not EBITDA, is the number buyers multiply to set the price, because it answers the only question a buyer of an owner-run business actually has: how much does this business really put in one owner's pocket.
How SDE is calculated
Start with the net profit on your tax return or P&L. Add back what the business pays you: your salary, your payroll taxes, your benefits. Add back interest, taxes, depreciation, and amortization, the financing and paper costs a new owner inherits differently. Then add the discretionary items: the vehicle the business carries for you, the travel that was half personal, the family member on payroll above market for the role. Finally, remove what does not repeat, in both directions: one-time expenses get added back, and one-time income gets subtracted. What remains is what the business earns for the person who owns and runs it.
Written as a line: SDE equals net profit, plus owner compensation and payroll taxes, plus interest, taxes, depreciation and amortization, plus documented discretionary and one-time expenses, minus one-time income.
That last subtraction surprises people, and it is where honest sellers separate themselves from hopeful ones. If the business collected a government subsidy, an insurance settlement, or a windfall contract that will not repeat, a real SDE calculation takes it out. A buyer's accountant certainly will.
The add-back taxonomy: legitimate, aggressive, and fatal
Every add-back you claim will be tested line by line, so it pays to know how buyers sort them. Legitimate add-backs are documented and provable: your W-2 salary, the country club membership with twelve statements behind it, the one-time legal settlement with the invoice attached. These survive diligence untouched. Aggressive add-backs are the gray zone: the spouse on payroll who does some real work, the vehicle that is sometimes used for deliveries, the "one-time" consulting expense that has appeared three years running. These get negotiated, usually at fifty cents or less on the dollar. Fatal add-backs are the ones that kill trust: unreported cash you cannot document, personal expenses you cannot separate, adjustments that exist only in the story. Claim one of these and the buyer stops believing the legitimate ones too. The add-back schedule is not just arithmetic, it is the first honesty test of the whole deal.
A worked example
Here is the mechanics on a demonstration manufacturer we use throughout the site, with reviewed financial statements behind every number. Verified EBITDA: $1,276,034. The owner's documented net add-backs come to $94,300. The business also received $11,500 in one-time government assistance that will not repeat, so it comes out. SDE: $1,276,034 plus $94,300 minus $11,500 equals $1,358,834. Notice two things. The gap between EBITDA and SDE is $82,800, real money when a multiple gets applied to it. And the calculation runs in both directions, additions and subtractions, because a number a buyer can verify is worth more than a bigger number they cannot.
SDE or EBITDA: which one applies to you
The difference is one salary. EBITDA measures the earnings of a business that runs with paid management in place. SDE measures the earnings of a business where the owner is the management. If the buyer of your business will personally run it, they think in SDE, because your salary becomes their salary. If the buyer will hire a manager, they think in EBITDA, because a market salary has to come out of the earnings before anything else is measured. This is why the same business can be quoted two different earnings numbers and two different multiples, and why the crossover matters as businesses grow: somewhere past a million or two in earnings, buyers stop being owner-operators and start being investors, the metric flips from SDE to EBITDA, and the multiple bands change with it. Quoting your business on the wrong metric is one of the most common ways owners misprice themselves before a single buyer shows up.
Why SDE sets the price, the financing, and the deal
Most owner-run businesses in the lower middle market trade between two and four times SDE, with the band moving on risk: customer concentration, owner dependence, the quality of the books, the trend of the earnings. But the multiple is only half the machine. The other half is the bank. Most buyers borrow most of the price, and the lender sizes the loan against your cash flow after the new owner takes a market salary. A generous SDE with aggressive add-backs can pass a handshake and then fail the bank, which is where deals die weeks after everyone smiled. The honest SDE, the one every line of which survives verification, is the one that carries a price all the way to a closing.
What buyers will do to your number
Expect a buyer's team to rebuild your SDE from source documents: tax returns, bank statements, payroll runs. Where the number you told and the number they build agree, trust compounds and the deal accelerates. Where a gap appears, every remaining claim gets re-examined at a discount. The single best preparation an owner can do before going to market is to run that verification on themselves first, find the gaps before a buyer does, and take the fragile add-backs off the table voluntarily. A slightly smaller number that holds is worth more than a bigger one that breaks.