What Is SDE vs. EBITDA? A Small Business Buyer's Guide

The existence of two primary earnings metrics reflects a fundamental structural difference between owner-operated small businesses and management-run larger businesses. In an owner-operated small business, the owner is typically the highest-paid employee, and their personal compensation is both the primary 'salary' and the primary return on their investment in the business. The owner's decisions about how much to pay themselves, what personal expenses to run through the business, and whether to defer or accelerate capital expenditures directly influence the reported net income.

SDE was developed to answer the question: 'What is the total economic benefit to a single full-time owner-operator?' By adding back not just depreciation and interest (as EBITDA does) but also owner compensation and personal benefits, SDE captures the full pre-tax, pre-owner-cost earning power of the business. This makes it the right metric for valuing businesses where the buyer intends to be the owner-operator.

EBITDA was developed for businesses where the owner is not the primary operator — where professional management is already in place or will be hired by the new owner. EBITDA does not add back management compensation because that compensation is a legitimate ongoing operating cost under the new ownership structure.

SDE = Net Profit + Owner Compensation (salary, bonuses, dividends) + Owner Perks and Personal Benefits + Depreciation and Amortization + Interest Expense + One-Time or Non-Recurring Expenses − One-Time or Non-Recurring Income.

Here is a detailed example using a plumbing and heating company in Burnaby with $500,000 in annual revenue.

Net profit as reported on the income statement: $28,000. Owner salary: $85,000 (add back — this will either be replaced by your own salary draw or represents your compensation). Owner vehicle expenses (personal vehicle on the business): $9,600/year (add back — you may or may not run your personal vehicle through the business). Owner life insurance premium paid by the company: $3,200/year (add back). Depreciation on vehicles and equipment: $22,000 (add back — this is a non-cash expense). Interest on a business vehicle loan being paid off at close: $4,100 (add back). One-time legal costs for a customer dispute now resolved: $7,500 (add back).

SDE = $28,000 + $85,000 + $9,600 + $3,200 + $22,000 + $4,100 + $7,500 = $159,400.

At a 2.8× SDE multiple (reasonable for a stable trades business in BC), this business is worth approximately $446,300.

EBITDA = Net Profit + Interest Expense + Taxes + Depreciation and Amortization.

Using the same $500,000 revenue plumbing company: Net profit $28,000 + Interest $4,100 + Taxes (assume $11,000) + Depreciation $22,000 = EBITDA of $65,100.

Notice the dramatic difference: SDE of $159,400 versus EBITDA of $65,100. The difference is the owner compensation and perks ($97,800), which are added back for SDE but not for EBITDA.

For an owner-operator acquisition (the buyer intends to run the business themselves), SDE is the appropriate metric. For a passive or semi-passive acquisition where the buyer intends to hire a general manager at market salary to run the business, EBITDA is more appropriate — because the management cost is a real ongoing expense.

The threshold is generally: SDE for businesses with revenue under $3–5M and EBITDA for businesses above that level or those already operating with a management team. If a seller or broker attempts to use EBITDA multiples (which are typically higher) to value a small owner-operated business, this is a valuation inflation tactic you should recognise and correct.

Add-backs are legitimate in principle but contested in practice. The most common disputes arise around four types of add-backs:

Owner family member compensation: if the owner's spouse or adult children are on the payroll, their compensation may be added back only to the extent their role is redundant under new ownership. If they perform a real function that would need to be replaced, their salary is an ongoing cost, not an add-back.

Below-market rent when owner owns the property: if the owner also owns the building and charges the business below-market rent, the add-back inflates SDE. When you buy the business (not the building), you will pay market rent. The SDE should reflect market rent, not the artificially depressed rent.

Discretionary lifestyle expenses: travel classified as business travel, meals, entertainment, home office expenses. These are valid add-backs if genuinely personal and non-recurring for the new owner, but the line between business and personal is often blurry and contested.

Deferred maintenance: this is not technically an add-back in the SDE calculation, but sellers and brokers sometimes argue that deferred maintenance makes the recent cash flows look higher and therefore SDE is clean. It is not — deferred maintenance is a future capital obligation that reduces the effective value you are receiving.

Reported earnings — the numbers on the financial statements — are the starting point, not the conclusion. Normalized earnings adjust reported figures for non-recurring items in both directions: one-time expenses that inflate current costs downward (making the business look more profitable), and one-time revenues or cost deferrals that inflate current profitability upward.

For a buyer, normalizing is a two-way process. Add back the owner's personal expenses and non-recurring costs. Subtract one-time revenue boosts (a large unexpected government contract, insurance proceeds, a prior-year credit that won't recur). Adjust for any costs the seller intentionally deferred to inflate near-term profitability (delayed equipment maintenance, underinvestment in marketing, reducing inventory levels below operational requirements).

The most reliable approach is to normalize three years of financials independently and compare your normalized SDE trend across all three years. A business with consistent normalized SDE of $150,000–$165,000 across three years is a much safer buy than a business where year-one SDE was $110,000, year-two $130,000, and year-three $170,000 — even if the trailing-twelve-month number is the same. Volatility is a risk factor that should affect both the multiple and your due diligence depth.

Multiples are expressed as a multiplicand of the earnings metric — '2.5× SDE' or '4× EBITDA.' The market multiple reflects the risk-adjusted return that buyers in a given industry demand for their invested capital. Higher multiples mean buyers are willing to pay more for each dollar of earnings, which implies lower risk, higher growth expectations, or fewer competitive alternatives.

A critical practical point: SDE multiples and EBITDA multiples are not comparable. A restaurant trading at 2.5× SDE is not priced the same as a restaurant trading at 2.5× EBITDA. Because EBITDA is structurally much lower than SDE for owner-operated businesses (it excludes owner compensation), a 2.5× EBITDA multiple implies a far higher price-to-earnings ratio for the buyer.

A seller or broker who quotes you a '4× multiple' without specifying the earnings base is giving you incomplete information. Always clarify: four times what? SDE as the seller recast it? EBITDA? The most recent year only or a three-year average? Ask for the earnings number, the recast calculations, and the multiple applied separately — then assess each component independently rather than accepting the resulting price as a given.