In this piece · 7 sections
What SDE and EBITDA actually measure
Both SDE and EBITDA are attempts to answer the same question — how much real, recurring cash does this business throw off? — but they answer it for different sized businesses with different ownership structures.
EBITDA is earnings before interest, taxes, depreciation, and amortization. You start with net income, then add back four non-operational categories so the figure reflects pure operating profitability, independent of capital structure (interest), jurisdiction (taxes), and accounting policy (depreciation, amortization).
SDE starts with EBITDA and goes further. It also adds back the owner-operator's salary, any personal expenses run through the business, and any one-time costs.
The logic: in a small business sale, the new owner can choose to draw a salary or not, can choose to run personal expenses through the company or not. So those line items are "discretionary" — a benefit available to ownership, not a true business cost.
Why the difference matters
Take a $400k-revenue content site. Owner draws a $90k salary and runs $15k of personal expenses through the business. After all costs, net income is $80k.
On an EBITDA basis: net income $80k + interest $2k + depreciation $4k + amortization $1k = ~$87k EBITDA. At a 3.5× multiple, that's a $305k valuation.
On an SDE basis: same $87k base + $90k owner salary + $15k personal expenses = $192k SDE. At a 2.8× multiple, that's a $538k valuation. The website valuation multiples for 2026 post covers the current bands by asset class.
Which one applies to your site
The cutover from SDE to EBITDA is not a single revenue line — it is a function of how much the business depends on the owner, how much professional management it needs, and what kind of buyer is realistic. A working rule:
Worth flagging between the visuals: the underlying data is the same — the second view stacks the same facts in a different shape so the spread reads at a glance.
A small operational note before the call to action: the model returns the band; the memo explains which inputs are doing the heavy lifting.
The add-back conversation
If you are using SDE, the add-back conversation is where multiples are won and lost. Every dollar of legitimately discretionary spending you can document — and convince a buyer to accept as discretionary — translates directly into higher proceeds at the multiple.
- Owner salary is the cleanest add-back. If you paid yourself $80k and the new owner could choose not to, that's discretionary.
- One-time legal, accounting, or platform-migration costs. A $20k one-time Shopify replatform last year is not a recurring cost; it's an add-back.
- Personal expenses. Cell phone, vehicle, home-office utilities — if they were partially personal and partially business, the personal portion is an add-back.
- Family wages. A spouse's $30k salary doing four hours a week of bookkeeping is partly compensation, partly distribution.
Be ready to defend. The pre-listing roadmap and 90-day selling checklist cover how to document each add-back for buyer diligence.
How to calculate SDE vs adjusted EBITDA
The difference between SDE and EBITDA becomes clearer when you calculate both from the same set of books. Start with net profit, then add back interest, taxes, depreciation, and amortization. That gives you EBITDA. For adjusted EBITDA, add only defensible non-recurring items that a buyer would not inherit.
To calculate SDE, continue from EBITDA and add the financial benefit available to the owner-operator: owner salary, discretionary expenses, and personal expenses that would not be required under new ownership. SDE represents total cash flow available to one working owner. That is why small business owners and most owner-operated website sellers use SDE.
Choosing between SDE and EBITDA is really choosing the valuation method a buyer will accept. Use SDE when the buyer is buying a job plus cash flow. Use EBITDA when the buyer is acquiring a mid-sized business with management in place. The metric to use depends on business size, transferability, and whether the cash flow available after close requires a replacement operator.
Business brokers often show both in the gray zone. SDE multiples and EBITDA multiples are not interchangeable because the earnings base is different. EBITDA calculations treat owner compensation as a real cost; SDE calculation treats that compensation as discretionary earnings. Understanding the difference protects you from using valuation multiples that were meant for another size of business.
Which metric should value your business
The right metric for your business is the one a buyer will use to value your business after diligence. SDE is best when the buyer expects to operate the site personally and capture available cash flow. EBITDA is used when the business structure already includes management, repeatable systems, and financial reporting that can support institutional underwriting.
SDE and EBITDA calculations can produce very different outcomes for businesses in the same industry. SDE assumes the owner can remove salary or expenses paid through the business. EBITDA reflects a managed company where the owner's replacement cost remains in the model. That is one of the key differences in business valuation, and it explains why using the right metric matters before a business exit.
A useful valuation process should show adjusted EBITDA and SDE when the case is ambiguous. If the business is worth more under SDE but the likely acquirer will price on EBITDA, the seller should know that before setting expectations. The valuation approach should also explain whether EBITDA applies because the team is transferable, or whether SDE is typically used because the owner still carries the operation.
For website sellers asking whether to use SDE or EBITDA, the answer is not a slogan. Calculate EBITDA, calculate SDE, compare the cash flow available under each, then choose the valuation metric to use based on buyer type. Using the right metric is what keeps a listing price defensible when business brokers, buyers, and accountants all review the same books.
How RealSiteWorth handles it
RealSiteWorth returns a conservative range for owner-operated sites and can incorporate stronger financial context when an owner provides it. The output is a range, not a single number — see reading the band — and the methodology explains the public guardrails without exposing private implementation details. The website valuation pillar guide is the umbrella reference.
For larger sites or operations with a hired management team, the model can be configured to report adjusted EBITDA instead. The math is mechanical once the inputs are clean; the judgment is in which inputs apply, and how a real buyer is going to treat them.
