SDE (Seller's Discretionary Earnings)
Definition
Owner earnings: profit with the owner's pay and perks added back.
Why It Matters
Nearly every main-street listing is priced as a multiple of this figure, so it sets the asking price before you negotiate a thing. Because the add-backs are where an owner dresses the number up, most of screening is really an argument over what honestly belongs in SDE, and at a 3x multiple every soft dollar you accept costs three dollars of price.
In numbers: A shop reporting $300k of pre-tax profit, a $150k owner salary, and $60k of one-time and personal expenses shows $510k of SDE; at 3x that supports a $1.53M asking price.