SDE vs. EBITDA: The One Number Buyers Actually Pay You For
Every valuation multiple you hear gets applied to this number. Get it wrong by $100K at a 4x multiple, and you just lost $400K.
Why This One Number Matters More Than Revenue
Business buyers do not pay for revenue. They pay for earnings. Specifically, they pay a multiple of either SDE or EBITDA, and which one applies depends on the size and structure of your business.
Here is why this matters: the valuation formula is simple. Earnings × Multiple = Price. If your earnings number is off by $100K and the multiple is 4x, your price is off by $400K. If your earnings is off by $250K, your price is off by $1M. This is where most sellers either leave money on the table or create an overpriced listing that nobody buys.
Getting the earnings number right is the single most important exercise you do before going to market.
What Is SDE?
SDE stands for Seller's Discretionary Earnings. It is the total amount of cash a single owner-operator pulls out of the business in a year, before taxes and before any investment in growth.
SDE assumes the buyer will be an owner-operator just like you, they will replace your labor, collect your salary, and use the same perks you used. That is why SDE adds your salary back into earnings: the new owner will pay themselves the same way.
SDE Formula
What Is EBITDA?
EBITDA stands for Earnings Before Interest, Taxes, Depreciation, and Amortization. Unlike SDE, EBITDA assumes the business will be run by hired management after the sale, not by the owner. So instead of adding owner salary back, EBITDA subtracts a market-rate replacement salary for whoever will run the business going forward.
For any business where the owner is replaceable (or already replaced) with a general manager, EBITDA gives you a cleaner view of what the operation actually earns on its own.
EBITDA Formula
Worked Example: $2M Revenue Business
Let's walk through a real-feeling example. Same business, calculated both ways. Round numbers so the math is easy to follow.
Starting Point, From Tax Return
Calculating SDE
Calculating EBITDA
Same business. SDE is $340K. EBITDA is $255K. The difference ($85K) is the market-rate salary it would take to replace the owner. Neither number is "wrong", they just answer different questions for different types of buyers.
When to Use SDE vs. EBITDA
Use SDE when
- • Business earnings are under ~$5M
- • A single owner actively runs the operation
- • Your buyer pool is individual owner-operators or small search funds
- • You're using SBA 7(a) financing (SBA deals run on SDE)
Use EBITDA when
- • Business earnings are over ~$5M
- • Professional management is already in place
- • Your buyer pool is private equity or strategic acquirers
- • Institutional capital (debt or equity) is part of the deal
Rule of thumb: under $5M in earnings, use SDE. Over $5M, use EBITDA. Right around $5M, calculate both and use whichever buyer pool you're actually targeting.
Legitimate Add-Backs Buyers Accept
- Owner salary and distributions (SDE only)
- Owner health insurance, dental, vision paid by the business
- Personal car lease or payments expensed through the business
- Personal travel booked on the company card
- Meals and entertainment beyond normal business levels
- Family members on payroll who aren't essential
- Charitable donations made through the business
- Above-market rent paid to an owner-owned real estate entity
- One-time legal fees (lawsuit settlement, trademark registration)
- One-time consulting or branding projects that won't repeat
- Start-up or launch costs for new products or locations
- Non-recurring repairs or capital events
Add-Backs Buyers Reject
- Aggressive personal expense shifting, If more than 15-20 percent of your earnings comes from add-backs, buyers get suspicious. The business starts to look like a tax shelter, not a cash generator.
- "Pro forma" growth projections, You cannot add back "expected" revenue from a product launch that hasn't happened. Buyers pay for what is, not what might be.
- Speculative cost savings the buyer hasn't agreed to, "If you lay off Bob and renegotiate the lease, the business makes $80K more" is not an add-back. It is a promise.
- Anything you can't document, If a QoE analyst asks for a receipt and you can't produce one, the add-back dies. Keep the paper trail.
- Recurring "one-time" expenses, If you had "one-time" legal fees in each of the last three years, it's not one-time.
- Owner salary in an EBITDA calculation, EBITDA subtracts a replacement salary. You don't also get to add back what you paid yourself.
Want your SDE and EBITDA calculated for free?
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Every Multiple Applies to This Number
When people say "SaaS businesses sell for 4-8x" or "FBA brands sell for 2.5-5x" or "dental practices sell for 65-85% of collections", most of those multiples are applied directly to SDE or EBITDA.
That means a 10 percent improvement in your earnings calculation flows straight through to a 10 percent improvement in your valuation. Spending a month scrubbing the P&L, documenting add-backs, and getting a clean earnings number is usually the highest-return activity in the entire sale process.
Different industries weight this differently. See how it plays out in Amazon FBA valuations, SaaS valuations, ecommerce valuations, and dental practice valuations.
Frequently Asked Questions
What is the difference between SDE and EBITDA?
SDE (Seller's Discretionary Earnings) is the total cash a single owner-operator takes out of the business, it includes net profit, owner salary, owner perks, interest, taxes, depreciation, amortization, and one-time expenses. EBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization) assumes the business will be run by hired management, so a market-rate replacement salary is subtracted instead of added back. SDE is bigger than EBITDA by the amount of owner compensation above market rate.
Which one should I use for my business?
If your business is under roughly $5M in earnings and has one active owner-operator, use SDE, that is what buyers in this range will apply a multiple to. If your business is over $5M in earnings, or is already run by professional management, use EBITDA. The crossover happens where the owner's compensation stops being a major variable in the earnings picture.
What add-backs are legitimate and which ones do buyers reject?
Legitimate add-backs include owner salary, owner perks (health insurance, personal car, personal travel), one-time legal or consulting fees, one-time product launches, and above-market rent paid to an owner-controlled entity. Buyers reject aggressive personal expense shifting, "pro forma" growth projections as add-backs, speculative cost savings the buyer hasn't agreed to, and any add-back the seller can't document.
Why does this number matter so much?
Because every valuation multiple you hear, "3x," "5x," "8x", is applied to SDE or EBITDA. If you miscalculate the earnings number by $100K, and the multiple is 4x, your valuation is off by $400K. Getting the earnings number right is the single most important task in preparing a business for sale.
Should I hire someone to calculate SDE or EBITDA for me?
For businesses under $1M in earnings, you can often do it yourself with a spreadsheet and your tax returns. For businesses over $1M, a sell-side Quality of Earnings (QoE) report pays for itself many times over. A third-party validated earnings number is very hard for buyers to retrade during diligence, which protects your price.
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