What Is EBITDA? A Plain-English Definition for Business Buyers

The short version

• EBITDA is earnings before interest, taxes, depreciation, and amortization: one line on the income statement, the most-quoted number in any deal.
• It is the seller's number, before two costs a buyer cannot avoid: replacing the owner's work and servicing the loan.
• That gap is where a business priced at 3.5x and one priced at 1.65x can post the same EBITDA.
• Below: the definition, how to calculate EBITDA, and what the number quietly leaves out.

EBITDA is the most-quoted number in a small business deal and the most misread. A broker leads with it, a seller defends it, and a buyer who takes it at face value pays for it later.

The reason is structural. EBITDA measures the seller's earnings, and a buyer's only real question is how much of that becomes their cash flow after they replace the owner and pay the loan.

So start with what the word actually means, then with the gap between the seller's number and yours.

What EBITDA is, and how to calculate it

EBITDA stands for earnings before interest, taxes, depreciation, and amortization. It is a company's operating profit with four non-operating costs added back, used to compare the core earning power of one business against another before financing and tax structure muddy the picture.

You build it from the income statement in one pass:

• Start with net profit: the bottom line after every expense.
• Add back interest: debt cost belongs to the owner's financing choice, not the business.
• Add back taxes: tax bill depends on structure and the owner, not core operations.
• Add back depreciation and amortization: non-cash charges for assets bought in prior years.

The result is a cleaner read on what the operations earn. That is the whole appeal of the number, and also its limit.

EBITDA vs net profit, and vs SDE

EBITDA is not net profit. Net profit is what is left after interest and taxes; EBITDA adds those back to strip out financing and tax decisions that change with every owner.

It is also not the same as seller's discretionary earnings, the figure most main-street deals actually trade on. SDE adds the owner's salary and perks back too, because in a small owner-run business the owner is part of the cost structure, not above it.

That is the caveat EBITDA hides on a small business. It treats the owner's labor as if it were free, so the headline number overstates the cash that actually transfers until you subtract what it costs to do the owner's job.

A rough rule: smaller owner-operated businesses are quoted in SDE, larger manager-run ones in EBITDA. Confusing the two, or reading how EBITDA and SDE diverge on a small business too late, is how a buyer ends up comparing two numbers that were never the same thing.

Why buyers use EBITDA, and what it hides

Buyers use EBITDA because it normalizes earnings across businesses with different debt and tax situations. It answers a real question: stripped of financing, what does this operation earn?

The trap is treating that number as the buyer's take-home. EBITDA is the seller's earnings before two costs the buyer inherits the day they sign:

• Owner replacement cost: if the owner did $90,000 of work, the buyer hires a manager to do it, and that salary comes straight off EBITDA.
• Debt service: a buyer financing through an SBA 7(a) loan repays the loan out of the cash the business produces, not out of the EBITDA line.

Run both deductions and EBITDA stops being a multiple input and becomes a cash-flow question. The real test is whether what remains after a manager's salary and the loan payment clears the return a buyer should demand for the risk.

That single conversion is why two businesses with identical EBITDA sell hundreds of thousands of dollars apart. An owner-dependent service business sells near 1.65x; an owner-light one near 3.5x, a $555,000 gap on $300,000 of earnings, because the owner-light business hands the buyer more transferable cash and less owner to replace.

The full conversion lives in how to value a small business as a buyer, where the EBITDA line becomes a cash-on-cash return you can defend. EBITDA is where valuation starts, not where it ends.

FAQ

What is the EBITDA formula?

The EBITDA formula is net profit plus interest, taxes, depreciation, and amortization. You take the bottom line of the income statement and add back those four costs, which produces operating earnings before financing and tax structure are factored in.

Is EBITDA the same as profit?

EBITDA is not the same as profit. Net profit is what remains after interest and taxes are paid, while EBITDA adds both back, along with depreciation and amortization, to show what the core operations earn before an owner's financing and tax decisions.

Why do buyers use EBITDA to value a business?

Buyers use EBITDA because it compares earning power across businesses with different debt and tax structures. It is a starting point, not the buyer's take-home, because it sits before owner replacement cost and loan payments, both of which come directly out of that number.

EBITDA tells you what the operations earn. It does not tell you what the business is worth to you after you replace the owner and service the debt.

The free Keystone diagnostic runs that conversion. You get three scores and an estimated sale price, calibrated against 10 years of BizBuySell Insight Reports and 1.6M+ SBA 7(a) loan records.

Get your three scores and an estimated sale price, free, at app.trykeystone.io. Keystone Pro ($199/mo, $1,990/yr) adds the Deal Analyzer that runs the full buyer cash-flow conversion, and Core ($129/mo, $1,290/yr) tracks your own number as it moves.