When a small or medium-sized business changes hands, one formula tends to dominate the conversation:
The accountant provides a number. The broker suggests a multiplier. A price emerges. Simple, elegant — and, for an unprepared buyer, dangerously incomplete.
This paper unpacks what this formula actually measures, what it systematically ignores, and why a buyer relying solely on it may be pricing a business through the seller's eyes without ever knowing it.
Part I — Four Concepts, One Dangerous Confusion
Before we touch any formula, let's separate four concepts that are routinely conflated in the SMB transaction world.
| SELLER'S PERSPECTIVE | BUYER'S PERSPECTIVE | |
|---|---|---|
| Valuation | SDE × Multiple — a present value of past performance at transaction date T. | DCF — a present value of forecasted future free cash flows, discounted at required yield. |
| Asking Price | Set by seller, informed by broker benchmarks. Starts with SDE, ends with negotiation. | Informed by the maximum price the buyer can afford, derived from their DCF. |
| Final Price | Where minds meet — urgency, financing terms, timing, emotion. Not the subject of this paper. | |
Valuation is what each party believes the business is worth — shaped by their perspective, risk tolerance, and what they stand to gain or lose. Price is where minds meet. It incorporates elements that never appear in a spreadsheet: urgency, financing terms, timing, and emotion. They are not the same thing.
The Seller looks backward
Their valuation is rooted in what the business has produced — a present value of past results at transaction date T.
The Buyer looks forward
Their valuation asks: how much will this generate over the next 3–5 years? And from that: how much can I afford to pay today?
SDE × Multiple is a Seller framework. DCF at a given yield is the Buyer's compass. Both are legitimate. They often produce very different numbers — and that gap is where deals either happen or fall apart.
Part II — Understanding SDE: From P&L to Seller's Discretionary Earnings
2.1 The P&L Waterfall
SDE is derived from the Profit & Loss statement through a sequence of adjustments. The first key step: why do we stop at EBITDA rather than EBIT?
EBITDA excludes Depreciation & Amortization because these are accounting entries, not cash outflows. They reflect the declining book value of assets on paper, but no cash leaves the business each month on their account. For an SMB — especially in asset-intensive sectors like food service — these non-cash charges can significantly distort the picture of actual cash generation.
SDE goes one step further: it adds back the owner's full compensation — salary, benefits, and personal expenses run through the business. The logic is direct: what the current owner paid themselves is irrelevant to the business's underlying earning power. What matters is the total cash available to a single working owner, regardless of how it was split.
| LINE ITEM | AMOUNT | NOTES |
|---|---|---|
| Revenue | $1,200,000 | Annual gross sales |
| − Cost of Goods Sold (COGS) | ($360,000) | 30% of revenue |
| = Gross Profit | $840,000 | 70% gross margin |
| − Operating Expenses (excl. D&A) | ($540,000) | Rent, labor, utilities, marketing… |
| = EBITDA | $300,000 | Before interest, taxes, D&A |
| + Owner Compensation & Benefits | +$120,000 | Salary + personal add-backs |
| + Non-recurring / one-time items | +$15,000 | e.g. one-off legal settlement |
| = SDE (Seller's Discretionary Earnings) | $435,000 | Basis for the multiple |
Figure 1 — P&L to SDE: illustrative example for a $1.2M revenue restaurant
2.2 The FF&E Complication
Where do physical assets fit in? Furniture, Fixtures & Equipment (FF&E) are typically added separately to the valuation — but this creates immediate ambiguity in the formula's construction:
The answer varies by deal, broker, and industry convention. This ambiguity is not a minor detail. On a transaction with $80,000 in FF&E and a multiple of 2.2, misalignment on this single question represents a $176,000 swing in valuation. Buyers who don't challenge the formula's construction are paying for imprecision.
Part III — The Multiple: Where Art Meets Industry Benchmarks
3.1 Industry Distribution for Restaurants
Industry associations and broker networks publish average SDE multiples by sector. For restaurants, the data clusters around a mean of approximately 2.2, with a standard deviation of ~0.4. Statistically, 95% of completed transactions fall between 1.4 and 3.0.
Figure 2 — Approximate distribution of SDE multiples in restaurant transactions (% of deals per range)
3.2 What Moves the Multiple
The multiple is not a fixed parameter. It is adjusted based on qualitative factors specific to each business. The listing agent's role is to argue for a multiple that produces a defensible asking price — structurally aligned with the seller's interests.
The listing agent suggests the multiple. The system is calibrated toward the seller's interests. That doesn't make it dishonest — it makes it something a buyer must understand before entering the room.
Part IV — The Buyer's Compass: Discounted Cash Flow
4.1 Free Cash Flow vs. EBITDA
A DCF does not start from EBITDA. It starts from Free Cash Flow (FCF) — the actual cash generated after capital expenditures and taxes. This is a critical distinction that SDE-based valuations systematically ignore.
| EBITDA | FREE CASH FLOW | |
|---|---|---|
| What it measures | Operating profit before financing, taxes, and non-cash charges | Actual cash generated after all reinvestment and taxes |
| Taxes | Excluded | Included |
| CAPEX / Reinvestment | Excluded | Included (actual spend, not D&A) |
| Depreciation | Added back (excluded) | Replaced by real CAPEX spend |
| Best used for… | Seller benchmark, industry comparison | Buyer's DCF input, return modeling |
| Key risk | Overstates cash when CAPEX needs are high | Requires accurate CAPEX forecasting |
CAPEX deserves particular attention in the restaurant context. A business that hasn't replaced its exhaust hood in 12 years, runs on a legacy POS that crashes weekly, and has a walk-in cooler on borrowed time may look highly profitable on paper. A buyer inherits not just the revenue stream — but the deferred investment the seller chose not to make. EBITDA will not tell you that. FCF will.
4.2 The DCF Framework and the Owner Transition Factor
A DCF values the business as the present value of its projected free cash flows, discounted at a rate reflecting the buyer's required return — cost of capital, opportunity cost, and risk premium. For a hands-on SMB acquisition, a required yield of 20–25% is not unreasonable given the concentration risk and personal operational involvement.
The DCF forces buyers to model what SDE-based valuation ignores entirely: the ownership transition. Will key staff stay? Will loyal customers follow the previous owner out the door? Will the chef who has been there nine years take their regulars elsewhere? Will supplier terms be renegotiated on day one? These are not hypothetical — they are material variables that determine whether the purchase price is justified.
Part V — The Complete Example: When Both Models Sit at the Same Table
Let's put both frameworks side by side with a concrete case: a casual dining restaurant generating $1.2M in annual revenue, $435,000 SDE, $80,000 in FF&E. The buyer targets a 22% annual yield over 5 years and models a Year 1 revenue dip of ~4% due to the ownership transition.
| Year 1 | Year 2 | Year 3 | Year 4 | Year 5 | |
|---|---|---|---|---|---|
| Revenue | $1,150,000 | $1,200,000 | $1,260,000 | $1,310,000 | $1,360,000 |
| EBITDA (25%) | $287,500 | $300,000 | $315,000 | $327,500 | $340,000 |
| − CAPEX | ($45,000) | ($30,000) | ($30,000) | ($60,000) | ($30,000) |
| − Taxes (~20%) | ($57,500) | ($60,000) | ($63,000) | ($65,500) | ($68,000) |
| = Free Cash Flow | $185,000 | $210,000 | $222,000 | $202,000 | $242,000 |
| Discount factor (22%) | 0.820 | 0.672 | 0.551 | 0.451 | 0.370 |
| Present Value of FCF | $151,700 | $141,100 | $122,300 | $91,100 | $89,500 |
| DCF VALUE (5-yr, 22% yield) | Sum of PV = $595,700 | ||||
Figure 3 — 5-Year DCF Model at 22% discount rate (Year 1 transition dip modeled)
Now let's compare what each valuation method produces:
| VALUATION METHOD | VALUE | WHAT IT REFLECTS |
|---|---|---|
| Seller SDE × Multiple |
$435,000 × 2.2 = $957,000 + FF&E $80,000 = $1,037,000 |
Past performance. Industry-average multiple. FF&E added separately. |
| Buyer DCF @ 22% yield |
$595,700 | 5-year FCF (post-transition, after CAPEX & taxes) at 22% required return. |
| Gap | −$441,300 (43%) | Seller and buyer describe two different assets. Bridging the gap requires renegotiation, seller financing, or earnout structures. |
The gap here is $441,300 — 43% of the seller's asking price. This is not a rounding error. It is a structural difference between two legitimate frameworks describing two different things: what the business has been, and what it will likely generate under a new owner who pays taxes, reinvests in equipment, and faces a real Year 1 transition.
When DCF value exceeds or matches the SDE asking price, a deal flows naturally. When the gap is large, bridging it requires creativity: seller financing, earnout structures, or price adjustments tied to post-closing performance. All viable tools — but only for parties who understand both sides of the equation.
Conclusion — Know Both Sides of the Table
SDE × Multiple is not wrong. It is a practical shorthand with decades of market history behind it, and it serves its purpose: giving brokers and sellers a benchmarked, defensible asking price anchored in past performance.
But it is a seller's tool. Built to reflect what a business has been. Blind to what the new owner will face when the previous owner walks out the door.
A buyer who enters a transaction armed only with the seller's framework is not negotiating — they are accepting. The DCF model forces a harder set of questions: What will I actually earn? What must I reinvest? What does the transition cost me in Year 1? What is this business worth to me, at my required return?
These questions have answers. And those answers determine whether an acquisition creates wealth or destroys it.
The best SMB transactions are the ones where both sides understand both valuations — and find the overlap.
This paper is for educational purposes only and does not constitute financial, legal, or investment advice. All figures are illustrative.