What Is EBITDA? A Business Owner's Guide

If you're a business owner who has ever Googled "what is my business worth," you've encountered EBITDA. It gets thrown around in every M&A conversation like everyone should already know what it means. Most business owners nod along while quietly wondering why anyone would ignore interest, taxes, and depreciation when evaluating a company.

I've spent my career in M&A, and I can tell you that EBITDA is simultaneously the most useful and most misused metric in business valuation. Let me break it down the way I explain it to business owners across my desk — not the way a finance textbook would.

The Formula (It's Simpler Than You Think)

EBITDA stands for Earnings Before Interest, Taxes, Depreciation, and Amortization. The formula is:

EBITDA = Net Income + Interest + Taxes + Depreciation + Amortization

That's it. You start with the bottom line of your P&L and add back four specific items. But the real question isn't howto calculate it — it's why each item gets added back.

Why Each Item Is Added Back

Interest is added back because it reflects how you financed the business, not how it operates. If you took on $2M in debt to buy equipment while your competitor paid cash, your net income looks worse — but the underlying business performance is identical. A buyer will bring their own capital structure, so your interest expense is irrelevant to them.

Taxes are added back because they depend on your legal structure, tax elections, and personal situation. An S-corp, a C-corp, and an LLC with the same revenue and expenses will show wildly different tax lines. Buyers want to evaluate the business independent of your tax strategy.

Depreciationis a non-cash accounting charge that spreads the cost of physical assets over their useful life. Your delivery trucks didn't actually lose $80,000 in value this year in cash terms — that's just what your accountant booked. Adding it back shows the cash the business actually generated.

Amortizationworks the same way but for intangible assets — patents, customer lists, goodwill from prior acquisitions. If you acquired a competitor five years ago and you're still amortizing the goodwill, that's a bookkeeping entry, not an operating expense.

A Real P&L Example

Let me walk through a $3M revenue company I worked with last year. Their P&L looked like this:

• Revenue:              $3,000,000
• COGS:                 $1,650,000
• Gross Profit:         $1,350,000
• Operating Expenses:   $900,000
• Depreciation:         $120,000
• Interest:             $85,000
• Taxes:                $55,000
• Net Income:          $190,000

At first glance, $190,000 in net income on $3M in revenue looks thin — a 6.3% margin. But watch what happens when we calculate EBITDA:

• Net Income:      $190,000
• + Interest:      $85,000
• + Taxes:         $55,000
• + Depreciation:  $120,000
• + Amortization:  $0
• EBITDA:          $450,000

Now we're looking at a 15% EBITDA margin — much more representative of what this business actually generates for its owner. If similar companies in this industry trade at 4-5x EBITDA, this business is worth roughly $1.8M-$2.25M. Using net income at the same multiple would have yielded $760K-$950K — a massive undervaluation.

Adjusted EBITDA: What Buyers Actually Use

Here's what most articles about EBITDA miss: in M&A, nobody uses "reported" EBITDA straight off your financials. Every buyer, lender, and advisor calculates adjusted EBITDA — which adds back non-recurring, non-operational, and owner-specific expenses.

Common adjustments I see on virtually every deal:

• Owner compensation above market: If you pay yourself $400K but a replacement manager costs $180K, the $220K difference is an add-back.
• One-time expenses: That $60K lawsuit settlement, the $25K roof repair, the $15K rebranding — these won't recur, so they get added back.
• Related-party transactions: Renting the building from yourself at $8K/month when market rent is $5K? The $36K annual difference is an adjustment.
• Personal expenses run through the business: Your spouse's car lease, your country club membership, your kids' cell phones. These come back in.
• Non-cash stock compensation: If you issue equity to employees, the expense is real for accounting purposes but doesn't consume cash.

Going back to our example: if the owner was paying himself $350K (market rate for a replacement is $150K) and had $40K in one-time legal fees, the adjusted EBITDA would be $450K + $200K + $40K = $690,000. At 4-5x, the business is now worth $2.76M-$3.45M. Adjustments matter enormously.

When EBITDA Is the Wrong Metric

EBITDA works well for businesses above roughly $1M in earnings — the domain of private equity firms, strategic acquirers, and sophisticated buyers. But for smaller businesses, it can be misleading or even useless.

If your business earns less than $1M and is owner-operated, SDE (Seller's Discretionary Earnings)is the right metric. SDE includes the owner's total compensation — salary, benefits, perks — because a buyer of a small business is buying themselves a job. They want to know the total economic benefit of ownership, not just what's left after paying a manager.

The math: SDE = EBITDA + Owner's Total Compensation. For a business with $300K EBITDA and $200K in owner compensation, SDE is $500K. A buyer using SDE multiples (typically 2-4x) values this business at $1M-$2M and plans to run it themselves. A buyer using EBITDA multiples (4-6x) values it at $1.2M-$1.8M and plans to hire a manager.

There are also industries where neither EBITDA nor SDE is the primary metric. Insurance agencies trade on a multiple of book or commissions. Dental practices sell on a percentage of collections. SaaS companies trade on revenue multiples. Knowing which metric applies to your industry is step one of any serious valuation.

The "EBITDA Is Not Cash Flow" Caveat

This is the most important thing I tell business owners who fixate on EBITDA: EBITDA approximates operating cash generation, but it is not free cash flow. Three critical items sit below EBITDA that determine what you actually take home.

Capital expenditures (CapEx).EBITDA adds back depreciation, but if your business requires $150K per year in equipment replacement just to maintain operations, that's real cash going out the door. A trucking company with $800K EBITDA but $400K in annual fleet replacement has very different economics than a consulting firm with $800K EBITDA and $10K in CapEx. Buyers know this — it's why asset-light businesses command higher multiples.

Working capital requirements. If your business is growing, you need more inventory, you have more receivables outstanding, and your cash is tied up in operations. A business growing 20% per year might need $200K in additional working capital annually. That cash comes from somewhere.

Taxes. Yes, we added them back to calculate EBITDA, but the buyer will eventually pay taxes. A business structured as a C-corp faces federal tax rates around 21% on earnings. An asset purchase triggers different tax treatment than a stock purchase. The tax reality of the deal absolutely affects what a buyer will pay.

The Bottom Line

EBITDA is the common language of M&A. When a buyer says your business is worth "5x," they mean 5x EBITDA (or adjusted EBITDA). When a lender underwrites an acquisition loan, they're looking at EBITDA to determine debt service coverage. When a quality of earnings reportcomes back, it's essentially a deep forensic analysis of your adjusted EBITDA.

Understanding EBITDA — and more importantly, understanding how buyers will adjust your EBITDA — is the single most valuable thing you can do before entertaining acquisition conversations. Get it wrong, and you'll either overprice your business and waste everyone's time, or underprice it and leave real money on the table.