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

That math is the first mistake, and the most expensive one. What the broker means is almost always seller's discretionary earnings, which describes what the business produced for the current owner. What it'll produce for you, after you step in and pay off the loan, is a smaller number.

The gap between those two is where buyers overpay. On the $300,000 business we'll walk through here, the headline shrinks to about $90,000 once you pay a manager and service the loan.

What SDE 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 overstates what a buyer takes home.

That last sentence is the whole article, really. SDE answers "what did this business give its owner," and you need to know "what will it give me."

It's the standard earnings basis on owner-operated listings, typically businesses under roughly $1 million in earnings (a market rule of thumb, and a loose one). When a broker says a business "does $300,000," they almost always mean $300,000 of SDE.

Hang on to that $300,000. We'll run one business all the way through, because the danger is in what the formula leaves out.

How the number gets built

SDE starts from the bottom line of the profit and loss statement it's built from and adds back the costs that exist only because of the current owner. It's 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 that sit outside day-to-day operations, say $60,000.

Add those up and the linen service reports $300,000 of SDE. The number's real, but every line after step one is an add-back, and add-backs are where buyers get burned.

Here's a cleaner way to look at it. SDE is not a fact; it is a claim, 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 bank statements and tax returns can prove, so that part's evidence.

Every step after it is an assumption. Each add-back assumes the cost isn't a real cost of running the business, and one 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.

Why listings run high

An SDE figure usually inflates because of incentive, and the incentive is built into the deal.

A seller and a broker both get 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 get called discretionary.

A defensible add-back has a receipt and a reason. An aggressive one is a normal operating expense relabeled to lift the base, which is why the SDE on a listing is where verificaton starts.

The add-backs worth pushing on

Treat every add-back as a claim until you've 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.

These deserve the hardest look:

• 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 kid drawing a salary for little work sometimes gets 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 isn't 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're taking on faith.

It's the same discipline you'd apply to the whole deal. Separate what the seller's figures show from what they can actually prove, and send the gap to diligence before it ever reaches the offer price.

That's 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 stretched to get there, and it's worth less the moment you verify it.

What you actually keep

Start with the question you really care about: what's left after I pay a manager and service the loan? No listing does that conversion for you.

SDE assumes you'll work in the business the way the owner did, doing the labor and the management for free. The moment you plan to hire that out, or carry debt, two subtractions shrink what you keep.

• Owner replacement cost: if you won't 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 with an SBA 7(a) loan, one stage of the bigger process of buying a business, and the annual loan payment comes out of SDE. A note that costs $120,000 a year on a roughly $750,000 loan leaves $90,000.

Those debt figures aren't pulled from the air. 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, straight out of SDE.

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

The multiple matters just as much, and it scales with the base in a way 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 number to a buyer than it looks, because the same labor that produced it caps the multiple.

Two listings can show identical earnings and sell for wildly different prices. SDE alone will never show you that part, and it's the part a buyer watches closest.

Most owners never see it either. 86% of small business owners have no professional valuation or only a rough estimate, so the SDE they quote is often a number they've never had to defend.

SDE next to net income, EBITDA, and cash flow

Most of the confusion comes from which number the listing is quoting, since each one measures something different.

Rule of thumb: SDE for owner-operated deals, EBITDA for manager-run ones, and the gap between them is roughly one owner's salary. The full breakdown is in how EBITDA and SDE compare.

So before you line up two deals, confirm which number each one means. A listing quoting SDE will look bigger than one quoting EBITDA 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.

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

Keystone is built to help with that read, and it's closed while the build finishes. When it opens, the diagnostic takes about four minutes across 18 questions and returns three scores and a value range with the most likely figure locked, calibrated against 10 years of BizBuySell Insight Reports and 1.6M+ SBA 7(a) loan records. You'd see the real earnings behind a listing and what owner-dependence is doing to the multiple.

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