The short answer: SDE (Seller's Discretionary Earnings) is the total yearly benefit to one owner-operator: SDE = net profit + one owner's salary & perks + interest + taxes + depreciation + one-time add-backs. You rebuild it from the tax return because owners minimize reported profit for tax reasons. It's the earnings base for valuing Main Street businesses, multiply it by an industry multiple to get price. The traps: adding back more than one owner's salary, counting recurring costs as add-backs, and skipping receipts.
Worked normalization: tax return → SDE
Here's the entire rebuild on a real-shaped example, a landscaping company's tax return that reports just $52,000 of net profit. Watch it become $192,000 of SDE:
| Line (from the return) | Add back? | Amount | Running SDE |
|---|---|---|---|
| Net profit (bottom line) | Starting point | $52,000 | $52,000 |
| Owner's W-2 salary | + one owner | $85,000 | $137,000 |
| Owner payroll taxes | + | $6,500 | $143,500 |
| Depreciation (trucks, mowers) | + non-cash | $18,000 | $161,500 |
| Interest on equipment loan | + always added back | $7,500 | $169,000 |
| Owner's truck, phone, insurance (personal) | + documented perk | $9,000 | $178,000 |
| One-time legal fee (settled dispute) | + non-recurring | $6,000 | $184,000 |
| Son on payroll, doesn't work | + ghost wage | $8,000 | $192,000 |
| Working foreman's wages | NO, recurring | $0 | $192,000 |
| Deferred equipment repairs | NO, real cost coming | $0 | $192,000 |
| SDE, true owner benefit | = total | $192,000 |
Same trucks, same crew, same customers, the only thing that changed is whether you read the earnings correctly. The tax return makes this look like a $52,000 business (about $130,000 at a landscaping-typical ~2.5×). Rebuilt to SDE, it's $192,000 of real owner benefit, roughly a $480,000 business. Sellers and brokers price off SDE, so if you value a deal off the tax-return profit you'll lowball good businesses and lose them. Reading SDE right is the whole ballgame.
Why we didn't subtract a manager's salary here
SDE is the full benefit to one owner-operator, you add back all of the owner's pay and perks, full stop. You don't dock SDE for a replacement salary. That comes later and separately: when you check whether the loan's DSCR works, you budget the market wage for whoever runs it day to day. Mixing the two here is the single most common way people confuse themselves on valuation.
The formula, term by term
Every SDE rebuild is the same recipe. Here's what each piece means and why it belongs:
- Net profit, the tax-return bottom line, deliberately minimized. Your starting point, not your answer.
- + One owner's salary & payroll taxes, SDE measures earnings before paying the owner, because the buyer becomes the owner. Only one owner's pay (see pitfalls).
- + Interest, a financing choice, not an operating cost; the new owner's loan will differ.
- + Taxes, income taxes paid through the entity; they depend on the owner, not the business.
- + Depreciation & amortization, non-cash accounting entries; no money actually left.
- + Documented add-backs, personal perks, one-time costs, and ghost wages that won't continue. Governed by the rules in legitimate vs aggressive add-backs.
SDE vs EBITDA in one line
SDE adds one owner's salary back; EBITDA doesn't. That single difference is why SDE is bigger and carries a lower multiple. Use SDE for owner-operated Main Street deals.
Common pitfalls that inflate SDE
Most bad valuations trace back to a bloated SDE. These are the ones that catch buyers:
| Pitfall | Why it's wrong | The fix |
|---|---|---|
| Adding back two working owners' salaries | SDE assumes one operator; the buyer must pay any other workers | Add back one; keep the rest as expense |
| Add-backs with no receipts | Undocumented = unverifiable = worth $0 | Demand proof for every line |
| Counting needed marketing as an add-back | Cut it and revenue falls, it's a real cost | Leave recurring costs in |
| Adding back deferred repairs | The cost is coming; hiding it doesn't remove it | Leave it in, or price the repair |
| Using projected instead of actual figures | You buy what exists, not what's promised | Value trailing 12 months actuals |
| Forgetting your own replacement salary | You still need to eat while running it | Subtract a market salary before the DSCR test |
The two-owner trap
A husband-and-wife team both draw $80k and the seller adds back both, inflating SDE by $80k and the price by ~$200k at 2.5×. Only one owner's salary is a legitimate add-back; the second is a wage the buyer will keep paying.
Reported profit is a tax story. SDE is the truth. The whole valuation stands on which one you use.
Turn your SDE into a value
Enter your rebuilt SDE and industry for a value range, then test the loan.
Keep going
Frequently asked questions
SDE is the total yearly benefit a single owner-operator gets: net profit + one owner's salary & perks + interest + taxes + depreciation + one-time add-backs. It rebuilds the real earnings a buyer receives, and it's the standard base for valuing Main Street businesses.
Start with net profit, then add back one owner's salary and payroll taxes, interest, entity taxes, depreciation and amortization, documented personal expenses, and one-time costs. Each add-back must be documented, see legitimate vs aggressive add-backs.
Adding back more than one owner's salary, treating recurring costs like marketing or a working manager as add-backs, using projected instead of actual figures, forgetting your own replacement salary, and accepting add-backs without receipts. Each overstates SDE and inflates the price.
You add back one owner-operator's salary and payroll taxes, because SDE measures the benefit to a single owner who replaces that role. If two or more owners work in the business, only one salary is added back; the others are employee wages a buyer must keep paying.
Sources
- SDE definition, conventions, and multiples, BizBuySell Insight Report (2026).
- Industry multiples used in examples, Acquisition Ace multiples data (2026).
