SDE vs EBITDA: the short answer
The SDE vs EBITDA question comes down to who will run the business after the sale. Seller's discretionary earnings (SDE) estimates the total annual benefit available to one full-time owner-operator. EBITDA estimates operating earnings after paying everyone who works in the business, including management, at market rates. If the buyer will step into the founder's job, SDE is usually the more informative earnings measure. If the buyer will keep or install a management team and stay out of daily operations, EBITDA usually is.
The two numbers can differ by a full salary or more, so a multiple quoted against one cannot be applied to the other. This guide explains both definitions, the add-backs that move them, a worked example for a small software business, and the mistakes that cause valuation disputes. It is not accounting, tax, or legal advice; earnings used in a transaction should be prepared or reviewed by a qualified accountant.
What EBITDA means
EBITDA stands for earnings before interest, taxes, depreciation, and amortization. The SEC staff's interpretation for public-company filings is that "earnings" in EBITDA means net income as presented in the GAAP income statement, and that measures calculated differently should carry a distinct label such as "Adjusted EBITDA" (SEC, Non-GAAP Financial Measures C&DIs, Question 103.01). Private-company deals are not bound by those rules, but the distinction is useful: plain EBITDA is mechanical; "adjusted EBITDA" includes judgment.
EBITDA = net income + interest expense + income taxes + depreciation + amortization
Adjusted EBITDA = EBITDA ± documented non-recurring, non-operating, or normalizing items
EBITDA treats all labor as an ordinary operating expense. If the founder takes a $40,000 salary but the market cost of a replacement general manager is $110,000, a careful buyer will normalize compensation to market, which reduces adjusted EBITDA.
What SDE means
SDE is common in small-business brokerage. Corporate Finance Institute describes it as a cash-flow-based measure of earnings in an owner-operated business, with one owner's compensation and benefits added back and other owners' pay adjusted to market rates (CFI, "Seller's Discretionary Earnings").
SDE = pre-tax profit + interest + depreciation and amortization + one owner's total compensation and benefits + documented discretionary or one-time expenses − non-operating income
Equivalently, for many small companies:
SDE ≈ EBITDA + one owner's compensation + discretionary add-backs
SDE is not "free money." It is the pool from which a buyer-operator pays themselves, services any acquisition debt, reinvests, and pays taxes.
SDE vs EBITDA side by side
- Owner salary: SDE adds back one owner's compensation; EBITDA expenses management at a market rate.
- Typical buyer: SDE fits an individual operator or small holding company; EBITDA fits strategic buyers, private equity, and firms with management in place.
- Typical business: SDE fits an owner-operated company with a small team; EBITDA fits a company whose management works independently of the owner.
- Interest, depreciation, and amortization: both add them back.
- Discretionary personal spending: SDE adds it back if documented; so does adjusted EBITDA, but plain EBITDA does not.
CFI notes that SDE is used when valuing smaller companies and EBITDA is more common for larger ones (CFI). There is no universal revenue cutoff. The better test is whether the business would keep operating if the founder disappeared tomorrow and was replaced by paid staff.
Add-backs: where the arguments happen
Add-backs increase SDE or adjusted EBITDA by removing costs a buyer will not incur. Each one should be documented and plausible.
Usually supportable when documented:
- One owner's salary, payroll taxes, and benefits (SDE only).
- Clearly personal expenses run through the company, such as a personal phone plan or travel unrelated to the business.
- Genuinely one-time costs: a one-off trademark dispute, a rebrand, a migration project.
- Interest on debt that will not transfer, and non-cash depreciation and amortization.
Usually challenged:
- Recurring "one-time" costs: if a legal or migration expense appears every year, it is part of operating the business.
- Hosting, software, contractors, and marketing the business needs to maintain revenue.
- A second owner's salary added back in SDE without replacing their labor.
- Founder labor priced below market. If the founder does engineering, support, and sales for 50 hours a week, the buyer has to buy that time back somewhere.
For software businesses, also watch capitalized development costs. If engineering spend is capitalized and then amortized, adding back amortization can make EBITDA look stronger than the cash the business actually generates. Buyers may ask for a cash view that treats ongoing development as an operating cost.
Worked example: one SaaS business, two earnings figures
A self-serve SaaS business has the following trailing-twelve-month (TTM) results:
- Revenue: $360,000
- Cost of revenue (hosting, APIs, payment fees): $54,000
- Contractor support and marketing: $96,000
- Founder salary and benefits: $60,000
- Personal travel run through the company: $4,000
- One-time legal cost for a trademark dispute: $8,000
- Amortization of capitalized software: $12,000
- Interest on a founder loan: $3,000
- Pre-tax profit: $123,000
Check: $360,000 − $54,000 − $96,000 − $60,000 − $4,000 − $8,000 − $12,000 − $3,000 = $123,000.
SDE:
SDE = $123,000 + $3,000 interest + $12,000 amortization + $60,000 owner compensation + $4,000 personal + $8,000 one-time = $210,000
Adjusted EBITDA, assuming a buyer must hire a general manager at an illustrative market cost of $95,000 including benefits:
Adjusted EBITDA = $123,000 + $3,000 + $12,000 + $4,000 + $8,000 + $60,000 founder pay − $95,000 replacement = $115,000
Both figures are "right"; they answer different questions. SDE says an owner-operator could earn roughly $210,000 before debt service and taxes. Adjusted EBITDA says an absentee owner could expect roughly $115,000.
Now apply multiples. The following are illustrative assumptions only, not market benchmarks: 3.5x SDE gives $210,000 × 3.5 = $735,000; 6.0x adjusted EBITDA gives $115,000 × 6.0 = $690,000. Applying the EBITDA multiple to SDE by mistake would give $210,000 × 6.0 = $1,260,000, a number no informed buyer would accept. Always pair the multiple with the denominator it was derived from.
If the $12,000 of amortization reflects development the business must keep doing, a buyer may subtract an equivalent ongoing cost, lowering both figures. Test the result in the startup acquisition ROI calculator, which shows whether earnings can cover debt service and a reasonable return.
Which one should you use?
Use SDE when:
- The founder works full-time in the business and is the main operator.
- The likely buyer is an individual or a small acquirer who will operate it.
- There is no separate management layer.
Use EBITDA (usually adjusted) when:
- A team runs daily operations without the founder.
- The buyer is a strategic acquirer or financial investor who will not operate it personally.
- Lenders or investors expect EBITDA-based covenants or reporting.
Calculate both when the business is in between, for example a founder who works 15 hours a week supported by contractors. The gap between the two numbers is a direct measure of how much value depends on the founder's labor, which is also a transferability risk. The micro-SaaS valuation guide explains how to reconcile earnings-based and revenue-based views, and ARR multiples covers the revenue-based side.
How SDE and EBITDA relate to revenue metrics
Neither SDE nor EBITDA is a revenue metric. Revenue figures such as MRR, ARR, or a verified trailing revenue profile describe the top line. RevenueBug shows payment-provider-verified trailing 30-day revenue; it does not verify expenses, profit, SDE, or EBITDA (methodology). A buyer still needs profit and loss statements, tax returns, and bank records to rebuild earnings. The U.S. Small Business Administration recommends a thorough, objective investigation with help from an accountant and lists cash-flow and capitalized-earnings approaches among valuation methods (SBA, "Buy an existing business or franchise").
Common mistakes
- Mixing multiples and denominators. An SDE multiple applied to EBITDA understates value; an EBITDA multiple applied to SDE overstates it.
- Adding back two owners in SDE. Only one owner-operator's compensation is added back; others are normalized to market.
- Undocumented add-backs. If a seller cannot show an invoice and explain why the cost will not recur, expect it to be removed.
- Using a non-comparable period. Earnings should cover a full TTM period that ties to tax returns or reviewed statements. See TTM revenue.
- Ignoring working capital and deferred revenue. Annual prepayments collected before closing create obligations the buyer must service; this affects price even if SDE looks healthy. See startup buyer due diligence.
Frequently asked questions
Is SDE always higher than EBITDA?
For an owner-operated business, usually yes, because SDE adds back the owner's compensation. If the owner is paid far above market and EBITDA is normalized to market pay, the gap shrinks, but SDE is typically still higher.
Can I add back my entire salary for SDE?
For one working owner, yes, that is the point of SDE. The buyer then pays themselves from SDE. If a second owner also works in the business, their compensation should be adjusted to the market cost of replacing their work.
Is adjusted EBITDA the same as EBITDA?
No. Plain EBITDA follows a mechanical formula from net income. Adjusted EBITDA adds judgment-based items. Ask for a reconciliation from net income showing every adjustment.
Which metric do SaaS marketplaces usually quote?
Small-business and micro-SaaS listings commonly quote SDE or "profit," while larger deals and private-equity buyers typically use EBITDA. Always ask how the seller defined the figure; labels vary between platforms.
Do depreciation and amortization matter for software companies?
They matter when development is capitalized. Adding back amortization of capitalized code without accounting for continuing development spend can overstate sustainable earnings.
Does RevenueBug verify SDE or EBITDA?
No. RevenueBug calculates trailing revenue from connected payment providers. It does not see expenses or payroll and does not audit profitability.