Seller's Discretionary Earnings: SDE Formula, Add-Backs and SDE vs EBITDA

Seller's discretionary earnings (SDE) is the earnings figure a small business is priced on. The formula is net income plus interest, taxes, depreciation and amortization, plus the owner's compensation and benefits, plus documented discretionary and one-time expenses. It exists because a single owner-operator buyer captures the money the current owner pays themselves, so that money belongs in what they are buying.

The number matters more than almost anything else in a small business sale, because price is usually just SDE multiplied by a market multiple. Move SDE by $50,000 and, at typical multiples, you have moved the asking price by $100,000 to $175,000. That is why the add-back schedule is the single most negotiated document in a Main Street deal, and why a wishful one costs sellers more than a conservative one ever does.

What is seller's discretionary earnings?

Seller's discretionary earnings is the total pre-tax cash benefit a single full-time owner-operator would receive from the business in a year. It starts from reported net income and adds back everything that is a function of the current owner's choices rather than of the business's operations: their salary, their benefits, their personal expenses, the financing they chose, and non-cash accounting charges.

The reason it exists is that reported net income on a small business tax return is close to meaningless as a measure of earning power. An owner who pays themselves $250,000 and one who pays themselves $60,000 can run identical businesses and report wildly different profit. SDE strips out that choice so two businesses can be compared, and so a buyer can see what the business will actually put in their pocket.

It is a Main Street metric. Practitioners generally use SDE below about $1M of EBITDA, calculate both SDE and adjusted EBITDA in the $1M to $2M band, and switch to adjusted EBITDA above $2M. The switch happens because at that size a buyer is no longer planning to work in the business full time. They expect to hire a general manager, so the manager's salary is a real cost and does not get added back.

What is the seller's discretionary earnings formula?

SDE = net income + interest + taxes + depreciation + amortization + owner's W-2 compensation + owner's benefits + discretionary and one-time expenses. Net income comes off the income statement. Everything after it comes off specific general ledger accounts, which is the part that matters: every line in the recast must be traceable to an account in the books.

A useful way to think about it is in two halves. The first half, net income plus interest, taxes, depreciation and amortization, is just EBITDA, and it removes capital structure and accounting policy from the picture. The second half is the discretionary layer: owner pay, owner benefits, and the personal or one-time spending that ran through the business. That second half is what separates SDE from EBITDA, and it is the half buyers argue about.

One rule to apply consistently: SDE assumes one owner-operator. If a business is run by two owner-operators who both work full time, only one salary gets added back in full. The second is a real cost, because the buyer will have to replace that person. Sellers who add back both salaries and then cannot explain who does that work are the most common version of a recast falling apart in diligence.

Seller's discretionary earnings example

Here is a recast for a hypothetical service business with $1.4M of revenue. Start with the tax return net income and work down the schedule. Each line names the account it came from, which is exactly how it should be presented to a buyer.

Illustrative SDE recast, single-owner service business, fiscal 2025

Line	Amount	Source and reason
Net income per tax return	$118,000	Form 1120-S, page 1
Owner W-2 compensation	+ $145,000	Officer compensation account
Payroll taxes on owner comp	+ $11,000	Payroll tax expense, owner portion
Owner health insurance and retirement	+ $28,000	Benefits accounts, owner portion
Interest expense	+ $19,000	Interest expense account
Depreciation and amortization	+ $34,000	Depreciation schedule
Personal vehicle (mileage log attached)	+ $9,200	Auto expense, personal portion
One-time employment litigation	+ $22,000	Legal expense, invoices attached
Seller's discretionary earnings	$386,200	Basis for the multiple

Reported profit of $118,000 becomes SDE of $386,200. At a 2.5x multiple that is the difference between a business that looks barely viable and one worth close to a million dollars. Nothing was invented to get there; every line came off an account and has a document behind it. That is the whole exercise.

What add-backs are allowed in SDE?

Four categories are broadly accepted. Owner compensation and benefits, meaning W-2 wages, the payroll taxes on them, health insurance and retirement contributions. Genuine personal expenses run through the business. One-time and non-recurring items. And non-cash or capital-structure items: depreciation, amortization, interest and income taxes.

Within personal expenses, the ones that survive have a paper trail. A vehicle with a mileage log. A club membership in the owner's name. Personal travel that was genuinely personal, with no client meeting attached to it. Family cell phone lines. The test a buyer applies is whether the expense disappears the day they take over, and whether you can prove the amount without a conversation.

One-time items are the category most often abused and, when handled properly, the most valuable. A single lawsuit, a one-off rebranding, severance for a terminated employee, an uninsured storm loss, the professional fees from a failed acquisition attempt: all legitimate, all provable, and all genuinely non-recurring. The evidence standard is the same as everywhere else. An invoice, a settlement agreement or a board minute makes the line stick.

Which add-backs do buyers reject?

Six recur, and experienced buyers strike them almost on sight. Marketing spend written off as discretionary because it did not produce results. Consulting fees with no engagement letter or invoice behind them. Expenses labeled one-time that appear in all three years. Family payroll where the family member does real work at a market rate. Personal travel with any business component attached. And forward-looking run-rate adjustments, which ask the buyer to pay today for revenue that has not been earned.

The family payroll one causes the most friction, because sellers feel it is unfair. The logic is simple though: if your spouse does the bookkeeping twenty hours a week and is paid $30,000, the buyer will have to pay someone to do that job. It is a real cost of operating. What you can add back is the gap, the amount above market rate, if you can show what market rate for that role actually is.

There is a strategic cost to a padded schedule that sellers underestimate. When a buyer strikes two lines, they do not just remove those two numbers. They go back and re-examine every other line, and they start discounting the rest of your representations too. A conservative schedule where every line survives is worth more at closing than an aggressive one where half do, because it buys you credibility on the questions that come later.

SDE vs EBITDA: which applies to your business?

SDE and EBITDA differ in one place: SDE adds the owner's compensation and benefits back, EBITDA does not. Use SDE below roughly $1M of EBITDA, calculate both between $1M and $2M, and use adjusted EBITDA above $2M. The dividing line is whether the buyer will work in the business or hire someone to run it.

This matters for how you read multiples, and it is where sellers get confused. SDE multiples for sub-$2M deals typically run about 2.0x to 3.5x depending on industry, with the all-industry average sitting near 2.5x as of 2026 and the middle of the market closing around 2.7x. EBITDA multiples for larger deals run roughly 4.0x to 7.0x and up. Those ranges are not comparable, because they are applied to different earnings figures. Multiplying your SDE by an EBITDA multiple you read in an article about middle-market M&A is how sellers arrive at a price no buyer will discuss.

If your business is in the borderline band, calculate both and present both. It costs you nothing, it tells a sophisticated buyer that you understand what you are selling, and it lets each buyer type work from the figure they use. If you want a rough sense of what the resulting range looks like before you talk to a broker, a valuation estimate built from your own numbers is a reasonable sanity check to run first, though the figure a market actually pays is set by buyers, not by any model.

How do you document add-backs so they survive diligence?

Build the schedule as a document, not a claim. Reported net income at the top, each add-back on its own row with an amount, the general ledger account it came from, and a one-line reason. Adjusted earnings at the bottom. Then keep a folder of the supporting evidence alongside it, indexed to the row numbers, so that when a buyer asks about row seven you send one file rather than going hunting.

Do the same recast for all three years, not just the most recent one. A single-year recast invites the assumption that you picked your best year. Three years, consistently prepared with the same logic applied to each, shows a pattern and answers the trend question before it is asked. It also surfaces the recurring expenses you were about to call one-time, which is better found by you than by the buyer.

Then check it against the financing. If your buyer plans to use an SBA 7(a) acquisition loan, the lender runs their own filter over the add-back schedule, and unsupported adjustments do not just reduce price, they reduce the number of buyers who can be financed at your number. The requirements on that side are on our page about the financial statements banks and SBA lenders require.

What SDE work looks like in practice

Most of the effort is not the arithmetic, it is producing a clean, consistent monthly financial history to run the arithmetic on. Buyers ask for three years of annual statements, monthly detail for the trailing twenty four months, a trailing twelve month figure, and year to date, and then they ask for the fresher version again six weeks later. Every one of those has to tie to the others and to the tax returns.

That is mechanical work, and it is where a statement generator earns its keep during a sale. Feeding a QuickBooks or Xero export into our financial statement generator returns the income statement, balance sheet and statement of cash flows as one consistent set for any period, footed and tied to each other, in about a minute. When the buyer comes back for a refreshed TTM in week five, it is another minute. The full diligence document list and how the pack fits together is on financial statements for selling a business.

The normalization discipline itself transfers across deal types. Practice acquisitions in dentistry and medicine run on the same logic with a different vocabulary, adjusted EBITDA rather than SDE and collections rather than production, which we cover on dental practice financial statements. Whatever the label, the standard is the same: every adjustment ties to an account, and every account ties to a document.

This article is general information, not accounting, tax, legal or valuation advice. Add-back treatment is negotiated deal by deal and lenders apply their own standards. Work with your CPA and your broker on the schedule you actually send.