Knowing what your business is worth before you put it on the market is one of the most important things you can do as a seller. Owners who skip this step often misprice their businesses, lose credibility with buyers, or leave significant money on the table. A proper valuation gives you a defensible number, sets realistic expectations, and puts you in a stronger negotiating position from day one.

Why Valuation Comes Before Everything Else

Most sellers set a price based on what they need in retirement or what a neighbor got for their business five years ago. Neither of those approaches works. Buyers are sophisticated. They will run their own numbers, and if yours do not hold up, they will either lowball you or walk away.

A formal valuation also forces you to look at your business the way a buyer does: through the lens of transferable income, risk, and growth potential. That perspective often reveals both problems to fix and strengths worth highlighting.

The Three Main Valuation Methods

1. Seller’s Discretionary Earnings (SDE) Multiple

SDE is the most common method for small businesses, typically those with annual revenue under $5 million. You start with net profit, then add back the owner’s salary, personal expenses run through the business, depreciation, and any one-time costs. The result is the true cash flow available to a full-time owner-operator.

SDE multiples typically range from 2x to 4x for main street businesses, though strong businesses in good industries can reach 5x or higher. A restaurant might sell at 2.0x to 2.5x SDE. A recurring-revenue service business could command 3.5x to 4.5x. To understand how SDE compares to EBITDA, read our breakdown at SDE vs EBITDA: Which Valuation Method Is Right for Your Business?

2. EBITDA Multiple

For larger businesses, typically those with over $1 million in annual earnings, buyers shift to EBITDA: Earnings Before Interest, Taxes, Depreciation, and Amortization. EBITDA multiples vary widely by industry and business quality. Boring but stable industries like waste management or commercial cleaning might trade at 5x to 7x EBITDA. Tech-enabled businesses with strong growth can reach 8x to 12x or more.

Check out our industry-by-industry breakdown: EBITDA Multiple by Industry 2026: What Is Your Business Worth?

3. Asset-Based Valuation

Asset-based valuation makes sense when the business has significant tangible assets: real estate, equipment, inventory, or vehicles. You add up the fair market value of all assets, subtract liabilities, and arrive at a net asset value. This method is common for businesses that are not particularly profitable but hold valuable physical property. It establishes a floor price: no rational buyer will pay less than what your hard assets are worth.

How to Calculate SDE: A Step-by-Step Example

Here is how a simple SDE calculation looks in practice:

• Net profit (from tax return): $180,000
• Add back owner salary: $95,000
• Add back owner benefits (health insurance, car, phone): $18,000
• Add back depreciation: $12,000
• Add back one-time legal expense: $8,000
• Total SDE: $313,000

At a 3x multiple, that business is worth roughly $940,000. At 3.5x, it is $1.095 million. The multiple is where buyers and sellers negotiate, and understanding what drives that multiple is critical.

What Drives Your Multiple Up or Down

Two businesses with identical SDE can sell for very different multiples. The factors that move the number include:

• Revenue concentration: If one customer accounts for more than 20% of revenue, buyers apply a risk discount. Diversified customer bases command higher multiples.
• Owner dependency: A business that cannot run without the owner is a liability. Documented systems, trained staff, and a management team in place all increase value.
• Revenue type: Recurring contracts beat project-based revenue every time. Subscriptions and retainers are worth more than one-off sales.
• Growth trajectory: Flat revenue for three years is valued differently than revenue growing 15% annually.
• Industry: Some industries are simply more attractive to buyers. Healthcare services and software businesses trade at higher multiples than restaurants or retail.
• Documentation quality: Clean books, up-to-date financials, and organized operations records reduce perceived risk and justify higher offers.

Do You Need a Professional Valuation?

You can estimate your own value using the SDE or EBITDA method. However, for any business sale above $500,000, a professional business appraisal from a certified valuator is worth the investment. A Certified Business Appraiser (CBA) or Accredited in Business Valuation (ABV) professional produces a defensible written report that stands up in buyer negotiations, financing conversations, and legal reviews.

Professional appraisals typically cost $3,000 to $10,000 depending on business complexity. That cost is negligible compared to the difference between a confident, well-supported asking price and one you cannot defend.

The SBA’s guide to selling a business also outlines the role of valuations in the sale process, including what lenders and the SBA itself look for when a buyer applies for an SBA 7(a) loan to finance the purchase.

Timing Your Valuation

Most owners get their first formal valuation too late. The ideal time to do a valuation is 12 to 24 months before you plan to sell. That window gives you time to act on what you learn: cut unnecessary expenses, reduce customer concentration, clean up the books, or make strategic hires.

Waiting until you are ready to list means you are stuck with your current numbers. Getting valued early means you can improve them.

For a complete picture of the process beyond valuation, see our full guide: How to Value a Small Business: The Complete Guide.

Common Valuation Mistakes to Avoid

• Using revenue instead of earnings: Buyers buy cash flow, not revenue. A $2M revenue business with $80K in profit is worth far less than a $600K revenue business with $250K in profit.
• Mixing personal and business expenses without documenting them: If you have been running personal expenses through the business, you can add them back in SDE. But you need clean documentation to do so credibly.
• Anchoring to what a friend’s business sold for: Industry, geography, customer base, and timing all change the number. Comparisons to other businesses are useful context but not substitutes for your own analysis.
• Ignoring working capital needs: The business needs enough cash on hand to operate between closing and the buyer’s first full operating month. Buyers will negotiate working capital adjustments, and sellers who are not prepared often give ground they did not have to.

Start Here Before You Do Anything Else

Before you talk to a broker, post a listing, or tell employees you are thinking of selling, get your valuation in order. It shapes every conversation that follows.

Pull your last three years of tax returns, your current profit and loss statements, and any owner add-backs you can document. Run the SDE math yourself as a starting point. Then decide whether to hire a professional appraiser for a defensible written report.

The goal is to walk into every buyer conversation knowing exactly what your business is worth and exactly why. That confidence changes the outcome of every negotiation.

Related Reading: M&A for Small Business: The Complete Guide

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