What Is Seller's Discretionary Earnings (SDE)? A Plain-English Guide

The short version

• A listing quotes one seller's discretionary earnings number, and most buyers read it as money in their pocket. That is the first mistake.
• SDE is the seller's earnings before two costs land on you: replacing the owner's labor, and servicing the loan that bought the business.
• On a $300,000-SDE business those two subtractions can be the difference between a deal that pays you and a job that pays the bank.
• Below: what SDE is, how it is built, and how to convert it into the number that is actually yours.

A business listing shows one earnings figure, and most first-time buyers read it as their take-home. That is the first mistake, and it is the most expensive one.

The number is almost always seller's discretionary earnings. It describes what the business produced for the current owner, not what it will produce for you after you step in and pay off the loan.

The gap between those two numbers is where buyers overpay. This guide defines SDE in plain terms, then converts it into the figure that is actually yours.

What seller's discretionary earnings actually is

Seller's discretionary earnings is a small business's net profit with the current owner's pay and personal expenses added back, so it shows the total benefit one full-time owner draws from the business. It is the seller's number, calculated before a buyer pays to replace the owner's labor or services any loan, which is why it is not buyer take-home.

That last sentence is the whole point of this article. SDE answers "what did this business give its owner," not "what will it give me."

It is the standard earnings basis quoted on owner-operated listings, typically businesses under roughly $1 million in earnings, a market rule of thumb rather than a hard line. When a broker says a business "does $300,000," they almost always mean $300,000 of SDE.

Hold that $300,000 figure. We will run one business all the way through, because the danger is in what the formula leaves out, not in the formula itself.

How SDE is calculated

SDE starts from the bottom line of the profit and loss statement the number is built from and adds back the costs that exist only because of the current owner. The build is mechanical.

1. Start with net profit. Take the business's pre-tax net income from the P&L, say $90,000 on our example business.
2. Add back one owner's salary and benefits. A buyer assumes one working owner, so the seller's compensation goes back in, say $120,000.
3. Add back owner perks and personal expenses. The car, the phone, the travel run through the business but are discretionary to the owner, say $30,000.
4. Add back interest, taxes, depreciation, and amortization. These are financing and accounting items, not operating costs, say $60,000.

Sum those and the example business reports $300,000 of SDE. The number is real, but every line after step one is an add-back, and add-backs are where buyers get burned.

Here is the cleaner way to see what you are holding. SDE is not a fact; it is a claim, and a claim is built from three different materials that a listing blends into one confident figure.

Step one is a known. The cash that moved through the business is what the bank statements and tax returns can prove, and that part of the number is evidence.

Every step after it is an assumption. Each add-back assumes the cost is not a real cost of running the business, and a single figure carries as many of those assumptions as the seller chose to make.

And the multiple sits on top of an inference, that this year's earnings repeat next year. The buyer pays today for a future the past only suggests.

So the reason an SDE figure inflates is not simply carelessness. It is incentive, and the incentive is structural rather than personal.

A seller and a broker are both paid against the multiple, and the multiple applies to SDE. Lift the base by one dollar of soft add-back and the sale price lifts by the whole multiple, so every borderline expense has a reason to be called discretionary.

A defensible add-back has a receipt and a reason. An aggressive one is a normal operating expense relabeled as discretionary to lift the base the multiple feeds on, which is why the SDE on a listing is a starting point for verification, not a fact.

Which add-backs to question

Treat every add-back as a claim until you have seen the document behind it. The seller's incentive runs one direction, and a single soft add-back can move the multiple by tens of thousands of dollars.

A few categories deserve the most scrutiny:

• A below-market owner salary: if the seller paid themselves $40,000 to do a $120,000 job, the add-back understates owner replacement cost, and your real number is lower than the SDE implies.
• Family on payroll: a spouse or child drawing a salary for little work is sometimes added back as discretionary, but the work may be real and may need replacing.
• "One-time" expenses: a cost labeled non-recurring that shows up in two of the last three years is not one-time, and adding it back inflates the earnings.
• Personal expenses with no paper trail: a perk added back without a receipt is a number you are taking on faith, not a verified adjustment.

The discipline here is the same one a buyer applies to the whole deal. Separate what the seller's figures show from what those figures can actually prove, and send the gap to diligence rather than the offer price.

This is also why two listings with the same headline SDE are rarely worth the same. One built its $300,000 on conservative, documented add-backs; the other reached the same number by stretching, and the second business is worth less the moment you verify it.

Why SDE is not your take-home

Start with the buyer's real question: what is left after I pay a manager and service the loan? That is the conversion no listing does for you.

SDE assumes you, the buyer, will work in the business as the owner did, doing the labor and management for free. The moment you plan to hire that work out, or to service debt, two subtractions shrink the number you keep.

• Owner replacement cost: if you will not work in the business full-time, you pay a manager to do what the seller did. A general manager at $90,000 comes straight out of the $300,000, leaving $210,000.
• Debt service: most buyers finance the purchase with an SBA 7(a) loan, one stage of the larger process of buying a business, and the annual loan payment is paid out of SDE. A note that costs $120,000 a year on a roughly $750,000 loan leaves $90,000.

Those debt figures are not arbitrary. SBA 7(a) acquisition loans commonly run a 120-month term at rates that sat near 9.50% in FY2025, so a six-figure purchase note carries a six-figure annual payment that comes straight out of SDE.

Run both subtractions on the example and the $300,000 of SDE becomes roughly $90,000 of cash actually available to you. That is a real return, but it is a third of the headline number, and it only holds if the earnings are clean.

This is also why the multiple alone does not set the price. The same business sells near 1.65x SDE when it depends on the owner and near 3.5x when it runs without one, so the dependence behind the number moves the price as much as the number itself.

The effect scales with the base, which is the part most owners underestimate. On a business at $500,000 of SDE, moving from a 2.5x multiple to a 3.5x one is a $500,000 swing, and the earnings line never changes.

So the SDE base and the owner-dependence behind it decide the deal together. A high SDE built on the owner's own labor is a smaller buyer number than it looks, because the same labor that produced it caps the multiple a buyer will pay on it.

The earnings can be identical on two listings and the price wildly different. That is the part of the number SDE alone will never show you, and the part a buyer pays the most attention to.

This is the gap that stays invisible to most owners. 86% of small business owners have no professional valuation or only a rough estimate, so the SDE they quote is often a number they have never had to defend.

SDE vs net income, EBITDA, and cash flow

The confusion is rarely about the formula. It is about which number a listing is quoting, because each of these measures something different.

• Net income is the taxable bottom line after the owner's pay and all expenses, the smallest of these numbers. SDE is built by adding the owner's costs back onto it.
• EBITDA strips out interest, taxes, depreciation, and amortization but does not add back the owner's salary, so it assumes the business pays a market-rate manager. It is the metric for larger businesses that already run without the owner.
• SDE adds one owner's full compensation back in, which is why it is used for owner-operated businesses and tends to be a larger figure than EBITDA on the same business.
• Cash flow is what is left after debt service and reinvestment, the number closest to your take-home.

The practical rule: SDE for owner-operated deals, EBITDA for manager-run ones, and the difference between them is roughly one owner's salary. The full breakdown lives in how EBITDA and SDE compare.

Confirm which number a listing means before you compare two deals. A business quoting EBITDA and one quoting SDE are not speaking the same language, and the SDE figure will look larger for a reason that has nothing to do with quality.

FAQ

How do you calculate seller's discretionary earnings?

You calculate seller's discretionary earnings by starting with net profit and adding back one owner's salary, owner perks and personal expenses, and interest, taxes, depreciation, and amortization. On a business with $90,000 of net profit, those add-backs commonly build to roughly $300,000 of SDE, and each one needs a receipt and a reason.

What is the difference between SDE and net profit?

SDE is net profit with the owner's compensation and discretionary expenses added back, so it is always the larger of the two numbers. Net profit is the taxable bottom line after the owner has been paid; SDE shows the total benefit one owner draws before a buyer replaces that owner or services any debt.

Is SDE the same as what I will take home as the buyer?

No, SDE is the seller's number, not your take-home, because it is calculated before you pay a manager to replace the owner's labor and before you service the acquisition loan. On a $300,000-SDE business, owner replacement and debt service can reduce the cash actually available to you to roughly $90,000.

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You cannot price a deal off a number you have not converted.

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