Business Valuation Calculator

The math behind earnings-multiple valuation is genuinely simple — multiply annual earnings by a chosen factor. The hard, judgment-heavy part is choosing a defensible multiple in the first place. Multiples are shaped by industry norms, growth rate, customer concentration, whether revenue is recurring (subscription-style) or one-off, and how dependent the business is on its current owner's personal relationships and involvement. Two businesses with numerically identical net income can command very different valuations depending on these underlying quality factors.

A business with predictable, recurring subscription revenue and a diversified customer base will typically command a meaningfully higher multiple than a business with unpredictable, one-off sales concentrated among just a handful of large customers — even at the same reported net income — because the recurring-revenue business represents a more reliable, lower-risk stream of future earnings to a potential buyer.

Earnings-multiple valuation is one of several common methods used to estimate what a business is worth. Asset-based valuation adds up the value of everything a business owns minus what it owes, which suits asset-heavy businesses (like equipment rental or real estate holding companies) where the physical or financial assets themselves represent much of the business's value. Discounted cash flow (DCF) valuation projects future cash flows and discounts them back to today's value using an assumed rate of return — potentially more precise than a simple multiple, but it requires making several forward-looking assumptions that are themselves uncertain.

For a quick, first-pass estimate — especially for smaller, owner-operated businesses — the earnings-multiple approach used here is usually the fastest and most commonly used starting point, with more detailed methods reserved for formal transactions where precision justifies the additional analysis.

• SDE (Seller's Discretionary Earnings) — net income plus owner's salary and discretionary expenses, the common earnings basis for small business valuation.
• Valuation multiple — a factor applied to earnings, varying by industry, growth, and business quality characteristics.
• Owner dependency — how much a business's ongoing success relies on the specific current owner's personal involvement, which typically lowers valuation if high.

$150,000 in annual net income, using a 3.5x multiple typical for an owner-operated local business:

If this same business instead had recurring service contracts and a management team that didn't depend on the owner's daily involvement, it might reasonably command a higher multiple — say 4.5x — pushing the valuation to $675,000 for the identical $150,000 in earnings, purely from the improved quality and predictability of the earnings stream.

• Using one blanket multiple for every business type — recurring-revenue businesses command higher multiples than one-off, transactional sales models.
• Ignoring owner dependency — a business that can't function without the current owner's daily involvement is typically worth less to a buyer than one with independent management.
• Confusing revenue with earnings — valuation multiples in this context apply to net earnings (or SDE), not top-line revenue, which is a much larger and less meaningful figure to multiply.