Seller Discretionary Earnings: What It Is, How It's Calculated, and When It Matters

# Seller Discretionary Earnings: What It Is, How It's Calculated, and When It Matters

Walk into any business broker's office and ask to see the financials on a $2M business. You'll get a summary sheet showing revenue, expenses, and a number labeled SDE or seller discretionary earnings. That number will be higher than the business's net income. Often significantly higher.

Understanding what SDE is — and where it breaks down — is one of the most important things a buyer can learn before going under LOI.

What Seller Discretionary Earnings Means

Seller discretionary earnings is the total pre-tax financial benefit available to a single full-time owner-operator of a business. It starts with net income and adds back:

1. The owner's compensation (salary, distributions, or both) 2. The owner's personal expenses run through the business 3. Non-cash expenses (depreciation and amortization) 4. Interest expense (to isolate operating performance from financing) 5. One-time or non-recurring items

The formula looks like this:

SDE = Net income + owner compensation + personal expenses + depreciation + amortization + interest + non-recurring items

The logic: SDE represents what the business would generate for you, the new owner, if you stepped into the seller's role. Your compensation comes out of SDE — you don't add a market salary on top of it. That's how SDE works.

This makes SDE most useful for valuing owner-operated businesses where a single owner runs the day-to-day operations and takes most of their economic benefit through the business rather than through a formal salary.

A Simple Example

A plumbing company with the following financials:

| Item | Amount | |------|--------| | Revenue | $1,800,000 | | Operating expenses | $(1,400,000) | | Net income | $400,000 | | Owner salary | + $120,000 | | Owner vehicle (personal use) | + $18,000 | | Owner health insurance | + $12,000 | | Depreciation | + $45,000 | | Interest expense | + $22,000 | | One-time legal settlement | + $35,000 | | SDE | $652,000 |

A broker might price this business at 2.5x SDE, for a listing price of $1.63M. The SDE multiple for small businesses typically ranges from 2x–4x depending on size, industry, growth, and risk.

The new owner would acquire the business, step into the seller's role, and take home $652K — the SDE — in salary and benefits. If they hire a manager instead, that manager's $120K+ salary reduces what flows to the owner.

Where SDE Gets Abused

SDE is also the most manipulated number in small business M&A. Here's how:

Inflated add-backs. Sellers and brokers add back expenses that aren't truly one-time, aren't truly personal, or aren't truly going away. The plumbing company above added back $35K in legal settlement costs. Is that really non-recurring? Maybe — or maybe it's a business that settles worker disputes regularly. Your QoE provider's job is to scrutinize every line.

Owner compensation normalized too low. If the seller was taking $80K/year in salary but the job requires a $150K manager, the SDE overstates what's available to a non-operating buyer. The SDE formula adds back the seller's compensation — it doesn't normalize to replacement cost.

Counting distributions differently than salary. Some sellers take minimal salary and large distributions, or pass personal expenses through as business expenses rather than salary. The SDE should capture all of it, regardless of the form.

Using the best year. SDE is often calculated on a single trailing twelve month period that happens to be the business's best year. Three-year averages tell a more complete story.

SDE vs. EBITDA: When to Use Each

SDE is designed for owner-operated small businesses where the owner is the business. EBITDA is designed for businesses large enough to have professional management — where you can separate the management cost from the earnings the business generates.

The rough dividing line: businesses under $2M–$3M in earnings are typically valued on SDE. Businesses above that threshold are typically valued on EBITDA.

If you're buying a $1.5M HVAC company where the seller runs the crew and handles sales, SDE is the right metric. You're buying a job along with a business, and the SDE captures the total economic benefit.

If you're buying a $15M distribution company with a CFO, an operations manager, and a sales team, EBITDA is more appropriate. The management structure is already in place. The owner isn't essential to daily operations. EBITDA measures what the business generates after paying for that management.

For a detailed comparison of when each metric applies and how deal multiples work for each, see our guide to SDE vs. EBITDA.

Adjusted SDE vs. Normalized EBITDA: Not the Same Thing

A source of confusion: both adjusted SDE and normalized EBITDA start from the same place (reported income) and make adjustments. But they differ in a critical way.

Adjusted SDE includes the owner's compensation as part of the earnings available to the owner-operator. It does not subtract a market-rate management cost.

Normalized EBITDA strips out the owner's compensation entirely, replaces it with a market-rate management cost, and presents the earnings a business generates above and beyond what it costs to manage it professionally.

A business with $650K in SDE might have $450K in normalized EBITDA once you subtract $200K in market-rate management compensation. These are not interchangeable. Using the wrong metric at the wrong deal size leads to significant valuation errors.

For a deeper explanation of how normalized EBITDA is constructed and why it matters, see our normalized EBITDA guide.

What a QoE Does With SDE

When Bedrock is engaged on a buy-side quality of earnings for a smaller deal, we don't just verify the seller's SDE — we rebuild it independently.

That means:

- Pulling 24–36 months of bank statements and reconciling deposits to reported revenue - Reviewing every add-back claimed by the seller and forming an independent view of each - Identifying owner-related expenses that the seller didn't include in the SDE calculation - Quantifying one-time revenue that inflated the SDE in the trailing period - Providing a range (trailing twelve months, 2-year average, 3-year average) so the buyer understands the trend, not just the snapshot

On a $3M acquisition we completed last year, the seller's broker had calculated SDE of $525K. Our analysis came back at $380K — a 28% difference that repriced the deal by nearly $400K. The adjustments were mostly uncontroversial once documented: $85K in add-backs for costs that were genuinely recurring, $40K in revenue from a customer relationship that had already ended, and $20K in owner compensation that hadn't been included in the seller's calculation at all.

None of that was discovered by reading the seller's marketing package. It came from asking the right questions and testing the numbers against independent sources.

How to Use SDE in Your Buying Process

A few principles for buyers:

Don't accept the broker's SDE at face value. The broker works for the seller. Their job is to maximize price, not to verify every add-back. Treat SDE as a starting point for your own analysis, not a verified number.

Understand what you're buying. SDE is a useful shorthand for small business value. But you're not buying an SDE multiple — you're buying a business that will (or won't) generate that income for you. The quality, sustainability, and risk of those earnings matter as much as the number itself.

Model your personal income correctly. If you're replacing the seller as a full-time operator, the SDE is available to you as compensation plus return on capital. If you're hiring a manager to run the business, you need to model the manager's salary as an expense before you calculate your return.

Engage a QoE provider. For any deal over $500K, an independent quality of earnings analysis is worth the cost. The fee is typically $8K–$20K. On a $3M deal, that's less than 1% of the purchase price — and it's the work that will tell you whether you're paying the right price.

Bedrock runs buy-side QoE engagements across the lower middle market. Talk to us about your deal.