Seller's Discretionary Earnings: Calculate SDE From Your Books

Which profit number should you use from your books or tax return?

If the first row of an SDE calculation says only "net income," it does not tell you enough. Net income from which record? For which company and period? Before you debate a single add-back, you should be able to point to the exact profit figure the calculation will change.

Use the record that clearly identifies the company, period, and profit line you plan to adjust. That may be a tax return or a financial statement. Either can work, but every later adjustment must relate to the same figure rather than drift among several versions of profit.

Entity type changes what you will see around that figure. A sole proprietorship reports net profit or loss on line 31 of the 2025 Schedule C. The form also states that labor cost does not include amounts paid to the proprietor. That detail has an immediate consequence for SDE: a sole proprietor's work does not appear as a corporate-style salary expense inside Schedule C profit.

An S corporation presents the owner's economics differently. The 2025 Form 1120-S instructions address ordinary business income separately from officer compensation, salaries and wages, interest, depreciation, employee benefits, and other deductions. Those categories help show which costs may already have reduced the reported result. They do not, on their own, decide whether a particular amount belongs in SDE.

A partnership creates another pattern. The 2025 Form 1065 instructions separately address ordinary business income and guaranteed payments to partners. The separate presentation makes a guaranteed payment relevant to the analysis, but it does not automatically make the payment an add-back.

These forms are useful because they expose a simple problem: the same economic idea can appear in different places. One working owner may have officer compensation in an S corporation. A sole proprietor may contribute substantial labor without a proprietor salary reducing Schedule C profit. A partner's economics may include guaranteed payments reported apart from ordinary business income. Applying the same label and sign across all three would ignore how the starting figures were actually built.

We would start with the profit figure for the business and period you are explaining, then keep it fixed. If an owner-related amount reduced that profit, consider whether the SDE definition calls for reversing it. If the amount never reduced profit, adding it would create earnings that never disappeared in the first place.

The company's underlying records answer that question without turning the exercise into tax analysis. IRS Publication 583 explains how source documents feed journals and ledgers, which then feed financial statements and returns. You can follow that chain behind a reported total: the tax form shows where an amount appeared, while the ledger and supporting documents explain the transactions inside it.

Keep the reporting period consistent, too. Combining a profit figure from one year with adjustments from another period would not describe one coherent set of earnings. Once the first row settles the period, record, and profit figure, the owner-compensation question becomes much easier to ask accurately.

Does SDE include owner salary and benefits?

Yes—the IBBA definition includes one owner's entire compensation, including benefits and qualifying nonbusiness or personal expenses paid by the business. That answer has two important boundaries: the amount must have affected the chosen profit figure, and the definition does not treat every owner's compensation in the same way.

The first boundary prevents double counting. Suppose your records show owner compensation as an expense that reduced the reported profit used on the first row. If the amount fits the definition, reversing that expense changes the subtotal once. If the starting profit never included that expense, there is nothing to reverse. The owner's work may still matter economically, but SDE cannot manufacture a salary expense solely to add it back.

That is why the entity-type differences above matter here: the records, not a common label, show whether and where owner compensation reduced the starting profit.

Benefits widen the inquiry beyond a salary line. IRS Publication 15-B describes fringe benefits as compensation for services for federal employment-tax purposes. That guidance can help explain why a benefit appears in compensation records, but its tax treatment does not decide the SDE conclusion. Nor does an account labeled "benefits" prove that every amount inside it belongs to one owner or qualifies for adjustment.

The second boundary is the phrase "one owner." The IBBA glossary includes one owner's compensation in discretionary earnings and treats other owners separately through total compensation adjusted to market value. Applying the one-owner rule to everyone's pay would change the measure, especially when several owners work in the company or receive different forms of compensation.

This is where owners and advisers can talk past one another. An owner may reasonably think about total personal income from the business. The SDE definition asks a narrower question: which company-paid amounts fit its treatment of one owner, and how did those amounts affect the selected profit? Keeping those questions separate avoids an argument about labels and puts the focus on the actual economic effect.

In our view, the clearest owner-pay adjustment is easy to explain in one sentence: the company paid the amount, it reduced the selected profit, and it falls within the definition's treatment of one owner's compensation or benefits. If the records cannot support that explanation, the amount remains an open question. It does not become more credible because moving it would make SDE larger.

Owner compensation is only one part of the formula. The remaining categories expose the weakness in the phrase "add-backs": a complete SDE calculation has to account for movements that lower the subtotal too.

Which SDE add-backs - and subtractions - belong in the calculation?

The familiar add-back logic begins with expenses. If an applicable expense reduced reported profit, reversing its effect increases SDE. That can apply to the expense side of the categories named by the IBBA, including income taxes, nonoperating or nonrecurring expenses, depreciation and amortization, interest expense, and the defined one-owner amounts.

But the same definition also names income. Applicable nonoperating income, nonrecurring income, and interest income may have increased reported profit. Removing their effect requires a subtraction. An SDE presentation that reverses interest expense while retaining applicable interest income tells only the favorable half of the story.

Related offsets create the same problem. If income and expense both affected the starting figure, reversing only the expense changes the net effect. We think this is one of the most useful checks on an SDE schedule: whenever the schedule adds back an expense, look for income from the same category that may also need to come out.

Subtractions are not a generic haircut meant to make the schedule look conservative. They follow the same logic as additions. If applicable income raised the selected profit, leaving it there would carry that benefit into SDE even though the definition calls for removing it. Showing the subtraction also helps you separate movements required by the definition from amounts that still depend on company-specific judgment.

Mixed accounts deserve similar restraint. A single ledger account can contain transactions with different purposes. The fact that part of an account fits an SDE category does not establish that the entire balance should move. The ledger and underlying documents can separate the supported portion from the rest; the account title cannot do that work by itself.

This does not mean every proposed adjustment needs a miniature legal brief. It means the calculation should distinguish what the records establish from what remains uncertain. If the documents support only part of an amount, only that part can enter the resolved subtotal. If related income remains in the starting profit, the schedule should show its effect rather than allowing it to disappear behind a gross expense number.

The direction follows the amount's effect on starting profit: reverse an applicable expense only when it reduced that profit, remove applicable income when it increased the figure, and leave an amount that was already outside the starting number alone. If the records do not resolve an item, keep the question open instead of quietly folding it into SDE.

Those are consequences of the formula, not a universal list of accepted adjustments. The IBBA glossary supplies the categories, while the company's facts determine whether a particular amount belongs in one of them. Tax reporting also does not settle that transaction judgment. It shows where an amount appeared and how it affected reported profit.

By this point, the calculation should have one consistent starting figure and a set of additions and subtractions that explain real movements from it. The final step is to bring those movements back to one subtotal without confusing that arithmetic with a broader conclusion about cash or value.

What does an SDE result tell you - and what does it leave out?

Your finished SDE schedule should reconcile exactly:

Identified reported profit + additions - subtractions = shown SDE

That equation is simple. Making it reproducible requires one compact connection for each movement:

source statement or return and period -> ledger account and amount -> addition or subtraction -> supporting document -> resolved or unresolved

The first part anchors the calculation to reported profit for a particular period. The account and amount show what changed that figure; the sign shows whether the movement increases or decreases SDE. Supporting documents explain the amount, and the final status keeps an unanswered question from passing as settled.

You should not need the person who prepared the schedule sitting beside you to reproduce the arithmetic. Another reader using the same starting figure and displayed movements should reach the same subtotal. If the rows do not add back to the shown result, the schedule has not yet explained its own number.

That kind of reconciliation establishes something useful: it shows how the stated earnings presentation was built. It also makes disagreement more productive. Instead of arguing about the SDE total as a whole, you can see which particular amount, direction, or assumption remains in question.

Reconciliation does not establish whether another party will accept each movement. The IBBA glossary provides professional transaction vocabulary, not a guarantee of buyer or lender treatment.

SDE also does not tell you how much cash remains after capital spending, working capital, debt service, taxes, or replacement labor. The calculation does not account for those demands. A well-built earnings subtotal can therefore be clear and reproducible without representing cash available to an owner.

Nor does the subtotal supply a market multiple, company value, or transaction outcome. Those conclusions require evidence and analysis that the SDE calculation itself does not contain. Stopping at that boundary is not a weakness. It keeps the number useful for the question it can actually answer.

For us, a credible SDE figure is not the one with the most adjustments or the highest result. It is the one that begins with an identifiable profit number, treats one owner's compensation consistently, shows movements in both directions, and leaves open questions visible. That gives an owner something far more useful than a polished total: an earnings explanation another reader can understand and challenge.