If you're evaluating a business under $5 million, you'll see SDE — Seller's Discretionary Earnings — in almost every listing. Brokers use it to set asking prices. Buyers use it to justify offers. SBA lenders use it to determine loan eligibility.
The problem: SDE is self-reported. The seller calculates it, the broker packages it, and it lands in front of you as a number that's designed to make the business look as profitable as possible. That's not dishonesty — it's how the market works. But it means the number you're given is almost never the number you should be using to make a decision.
This guide explains exactly what SDE is, how it's built, where it gets manipulated, and how to evaluate it before you commit capital.
The Definition
Seller's Discretionary Earnings represents the total economic benefit available to a single full-time owner-operator after all operating expenses are paid — before accounting for the owner's compensation, taxes, depreciation, and amortization.
It's different from EBITDA, which is used for larger businesses with professional management teams. SDE adds back the owner's salary because in small businesses, the owner is typically the operator. A buyer replacing that owner needs to understand the total cash the business generates — including what currently goes to the seller as compensation.
That last line — the replacement owner's salary — is frequently omitted in broker listings. If you're buying a business that requires a full-time operator and you plan to hire one, that expense needs to come back out. Skipping it inflates SDE by $60,000–$120,000 on most deals and breaks your debt service math.
Why SDE Is Used Instead of EBITDA
EBITDA assumes the business has a management team separate from ownership. The owner's compensation is already baked into operating expenses as a market-rate salary. SDE doesn't make that assumption — it treats the owner's compensation as discretionary because the buyer determines what they'll pay themselves.
For businesses under roughly $2–3 million in revenue, SDE is the standard. Above that threshold, as businesses carry dedicated management teams, EBITDA becomes more appropriate. You'll sometimes see both metrics used in the $2M–$5M revenue range, which creates its own confusion.
Rule of thumb: If the seller is the primary operator — running day-to-day, managing employees, handling customers — use SDE. If the business has a GM or management team that would survive the seller's departure, EBITDA is more accurate. When in doubt, model both.
How SDE Gets Inflated
The add-backs are where deals go wrong. An add-back is any expense that gets pulled back out of the profit figure to increase SDE. Some add-backs are completely legitimate. Others are aggressive. And some are fabricated.
Legitimate Add-Backs
- Owner's W-2 salary and payroll taxes
- Owner's health insurance premiums run through the business
- Depreciation and amortization (non-cash charges)
- One-time legal fees not expected to recur
- One-time equipment repair for a non-recurring failure
- Charitable donations the new owner won't continue
Aggressive Add-Backs to Scrutinize
- Personal vehicle expenses run through the business
- Family member salaries — legitimate if they actually work, inflated if they don't
- Travel and meals — legitimate if business-related, not if personal
- Home office deductions
- Life insurance premiums for the owner
- "One-time" expenses that appear in multiple years
Red flag: If the same "non-recurring" expense shows up in two or three years of tax returns, it isn't non-recurring. This is one of the most common add-back inflations in small business listings. Always request three years of returns and compare the add-backs year over year.
SDE vs. What You Can Actually Take Home
SDE is not your take-home income. It's the ceiling of what the business generates before your debt service. The actual cash flow available to you after buying the business looks like this:
A business listed at $1.5 million showing $280,000 SDE sounds strong. Run the actual math: a 10-year SBA 7(a) loan at current rates produces roughly $195,000 in annual debt service. After debt service, you have $85,000 — before you pay yourself. For most buyers, that's not a viable deal at that price.
This is the single most important calculation buyers skip. They anchor on the SDE number without modeling what's left after the loan payment. The correct framing is always: what is the debt service coverage ratio (DSCR), and does it meet the lender's minimum threshold of 1.25x?
SDE Multiples: What Drives Valuation
Asking prices for small businesses are typically expressed as a multiple of SDE. Most deals in the $500K–$3M range price between 2.0x and 4.0x SDE, with the following factors pushing the multiple up or down:
Factors That Support a Higher Multiple
- Strong recurring revenue with contracts or subscriptions
- Low owner dependency — business runs without the seller
- Diversified customer base — no single customer above 15–20% of revenue
- Transferable lease with favorable terms
- Trained employees who will stay post-sale
- Clean books — consistent financials across three years
Factors That Compress the Multiple
- High owner dependency — seller is the rainmaker or key operator
- Customer concentration — one or two clients driving most revenue
- Short lease or non-transferable lease
- Declining revenue trend over the past 2–3 years
- Deferred maintenance or aging equipment
- Unclear or inconsistent add-backs
Practical framing: A 3.0x SDE multiple is not automatically reasonable or unreasonable. It depends entirely on whether the SDE is defensible — meaning it would survive a rebuild from source documents — and whether the risk profile of the business justifies that multiple. A car wash with clean financials, diversified customers, and a long lease might be worth 3.5x. A restaurant where the seller is the chef and the lease is month-to-month is worth 1.5x regardless of what the broker says.
How to Verify SDE Before You Offer
You should never make an offer based on a broker's SDE figure. The standard verification process — what we call a financial rebuild — requires the following:
- Three years of business tax returns — Schedule C (sole prop), Form 1065 (partnership), or Form 1120-S (S-corp). This is the primary source of truth.
- Most recent 12-month P&L — To capture current performance, which may differ from the last full tax year.
- Bank statements — To verify revenue actually deposited matches what's reported.
- Payroll records — To confirm owner and employee compensation.
From source documents, you rebuild the income statement yourself: gross revenue, COGS, operating expenses, and owner compensation — line by line. Every add-back gets evaluated individually against documentation. If an add-back can't be supported with documentation, it doesn't survive the rebuild.
The delta between the broker's SDE and your rebuilt SDE is usually where the negotiation lives. A $30,000 SDE discrepancy at a 3.0x multiple is a $90,000 difference in what you should pay.
SDE and SBA Financing
SBA lenders underwrite deals based on their own calculation of cash flow — not the seller's SDE figure. The lender will require the same documents, rebuild the financials independently, and apply their own add-back policy, which is typically more conservative than what a broker presents.
The SBA's standard threshold is a 1.25x debt service coverage ratio. If the business's verified cash flow doesn't cover 1.25x the proposed loan payment, the deal doesn't qualify. Buyers who anchor on the broker's SDE and structure their offer around it frequently discover during underwriting that the lender's number is materially lower — which collapses the financing and kills the deal after weeks of due diligence and legal fees.
The correct sequence: rebuild the financials independently before making an offer, model the debt service at your expected loan amount and rate, confirm the DSCR clears 1.25x, and structure the offer accordingly. If the numbers don't work at the asking price, you either negotiate a lower price or walk away.
The Bottom Line
SDE is a useful metric when it's calculated correctly from verified source documents. The version you receive from a broker is almost always optimistic — not necessarily dishonest, but structured to present the business in the strongest possible light. Your job as a buyer is to get to the real number before you commit capital.
The questions that matter: What is SDE after a rebuild from tax returns? What add-backs survive scrutiny? What does cash flow look like after debt service? Does the risk profile of the business justify the multiple being asked?
If you can't answer all four questions before submitting an LOI, you're not ready to submit an LOI.
Have a deal in front of you right now?
A Deal Day gives you a verified SDE rebuild, add-back analysis, SBA viability review, and a written go/no-go recommendation in 48 hours — before you make an offer.
Find Out If This Deal Is Worth Buying →$3,500 flat · 48-hour turnaround · Buyer-side only
