How to Value a Business You Want to Buy: A Practical Guide for Serious Buyers

Why Business Valuation Is the Most Important Skill You Can Learn as a Buyer

Most first-time business buyers make one of two mistakes: they either fall in love with the concept of owning a business and overpay, or they lowball every opportunity out of fear and lose deals to buyers who understood the numbers. Both outcomes cost you. The ability to independently value a business — before a broker, a seller, or an accountant tells you what it's worth — is the single skill that separates buyers who close good deals from those who don't close at all.

This guide walks you through every major valuation method used in the real market, with actual multiples, real examples, and the questions you should be asking during due diligence. Whether you're looking at a small service business in Ohio or a restaurant in South Florida, the framework applies — though the specific numbers will shift depending on industry, location, and deal structure.

The Foundation: What Are You Actually Buying?

Before you run a single calculation, you need to understand what the business actually produces for its owner. The most important number in a small-to-mid-market business sale is Seller's Discretionary Earnings (SDE) — the total financial benefit the business provides to a full-time owner-operator. SDE starts with net profit and adds back the owner's salary, owner perks run through the business, depreciation, amortization, one-time expenses, and non-cash charges.

For example: a dry cleaning business shows $60,000 in net profit on its tax return. The owner pays himself a $75,000 salary, runs a personal vehicle through the business ($8,000/year), and had a one-time equipment repair in year two ($12,000). Adjusted SDE = $60,000 + $75,000 + $8,000 + $12,000 = $155,000. That number — not the $60,000 on the return — is what you're buying.

Larger businesses (typically those with $1M+ in revenue or $500K+ in earnings) are often valued using EBITDA — Earnings Before Interest, Taxes, Depreciation, and Amortization — because they have management layers that don't disappear when the owner sells. The distinction matters: a $2M revenue HVAC company with a general manager running day-to-day ops is valued on EBITDA, not SDE, because you're not replacing the owner with yourself.

Valuation Methods Explained — and When to Use Each One

1. The Multiple of Earnings Method (Most Common for Main Street Businesses)

The vast majority of small businesses sell between 1.5x and 4x SDE, with the exact multiple driven by industry, transferability, lease terms, customer concentration, and market conditions. Here's a realistic breakdown of where industries typically fall:

• Restaurants (independent): 1.5–2.5x SDE. High risk, high failure rate, heavily dependent on the owner's presence. A leasehold in a strong tourist market like Orlando or Miami's South Beach corridor can push toward the top of that range, but don't let location alone justify overpaying.
• Service businesses (HVAC, plumbing, electrical): 2.5–4x SDE. Licensed trade businesses with recurring service agreements and a trained workforce command the highest multiples in this category. A pest control route in Florida with recurring contracts has sold at 4–5x SDE in competitive environments because of the predictability of that revenue.
• Retail (brick-and-mortar): 1.5–2.5x SDE. Heavily discounted right now due to e-commerce pressure. Exceptions include businesses with proprietary products, loyal local customer bases, or strategic real estate positions.
• Laundromats and car washes: 3–5x SDE, sometimes higher for newer equipment. These are valued partly on earnings and partly on asset value. An unattended laundromat with updated machines and a strong lease has genuine passive income characteristics that support premium pricing.
• Healthcare and dental practices: 0.5–1x gross revenue, or 3–5x EBITDA. State licensing rules vary significantly here — Florida, Texas, and California each have different requirements for non-dentist ownership (DSO structures), which directly affects buyer pool and pricing.
• SaaS / software businesses: 3–6x annual recurring revenue (ARR) for smaller businesses, with established platforms going much higher. These are almost never valued on SDE — the metric is ARR and churn rate.
• Franchises: 2–3x SDE typically, but also dependent on remaining franchise term, franchisor approval requirements, and territory exclusivity. A Subway with 8 years left on its franchise agreement and a mediocre location is a fundamentally different asset than a Chick-fil-A operator agreement — don't group franchises together.

2. Asset-Based Valuation

If a business isn't generating meaningful earnings — or you're buying primarily for its equipment, inventory, or real estate — you value it on assets. A manufacturing business with $800,000 in equipment and inventory that generates $40,000/year in profit is an asset deal, not an earnings deal. You'd typically pay 50–80 cents on the dollar for liquidation value of assets, then negotiate anything above that based on the going-concern value (customer lists, contracts, trained staff).

Asset-based valuation also sets your floor in any earnings-based deal. If the multiple-of-earnings value comes in below the replacement cost of the equipment, something is wrong with either the earnings or the asking price.

3. Comparable Sales (Market Approach)

This is how residential real estate gets valued, and it works in business sales too — with less transparency. Brokers who transact regularly in a specific market will have access to closed deal data through platforms like BizBuySell, Pratt's Stats, or proprietary databases. If a similar HVAC business in the same metro area sold for 3.2x SDE six months ago, that's a meaningful data point — not gospel, but directional.

The challenge is that most business sale prices are never publicly reported. Your best access to this data is through a broker who actively works the market you're buying in. This is one of the real reasons working with an experienced intermediary matters, even as a buyer.

4. Discounted Cash Flow (DCF)

DCF projects future earnings and discounts them back to present value using a required rate of return. It's theoretically the most rigorous method and practically the most abused one. Small business financials are too variable and too owner-dependent to reliably project 5 years forward. Use DCF as a sanity check, not a primary valuation tool, unless you're buying a business with highly contracted recurring revenue (think a long-term government service contract or a commercial cleaning company with multi-year agreements).

What Drives a Multiple Up — and What Kills It

Two businesses in the same industry with identical SDE can have dramatically different valuations depending on transferability factors. Here's what moves the needle:

• Owner dependency: If the seller is the rainmaker, the technician, and the bookkeeper, you're buying a job — not a business. Buyers rightly discount these heavily, often 0.5–1x SDE below market multiples.
• Revenue concentration: If 40% of revenue comes from one customer, your lender and your gut should both be nervous. SBA lenders frequently require a customer concentration rep and warranty in the purchase agreement when this is the case.
• Lease terms: A location-dependent business with 18 months left on its lease and a non-cooperative landlord is a ticking clock. A favorable 10-year lease with renewal options in a high-traffic area is a legitimate asset that justifies a higher multiple.
• Trend of earnings: Three years of consistent 10–15% revenue growth supports a premium multiple. Two years of decline with a story about COVID or a key employee leaving requires aggressive due diligence — and a price that reflects the risk.
• Workforce and systems: Does the business run on documented processes, or does it run on the owner's phone? A business with an operations manual, cross-trained staff, and software-managed workflows is genuinely worth more — and will qualify more easily for SBA financing.

SBA Financing and How It Interacts With Valuation

The SBA 7(a) loan program is the dominant financing vehicle for business acquisitions under $5 million. Understanding how SBA lenders underwrite deals will help you evaluate whether a business is priced to finance — because if it can't pass SBA underwriting, you either need all cash or the seller needs to carry a note.

SBA lenders typically require the business to demonstrate a 1.25x debt service coverage ratio — meaning after all loan payments, the business needs to generate at least 25% more than what you owe the bank annually. If a business generates $150,000 in SDE and your annual SBA loan payment on a $600,000 purchase would be $90,000, your DSCR is 1.67x — you're in good shape. If SDE is $100,000 and payments are $90,000, you're at 1.11x — likely declined.

This math has a direct implication for negotiation: if the asking price can't clear SBA underwriting at current rates, the seller either needs to accept a lower price or carry a meaningful portion of the financing as a seller note. Many sellers don't realize this until a buyer walks them through it — and it creates real room to negotiate on price and structure simultaneously.

Due Diligence: Verify Before You Close

Valuation is a hypothesis. Due diligence is how you test it. At minimum, request and verify the following:

• Three years of business tax returns (compare to P&Ls — significant discrepancies need an explanation)
• Twelve months of bank statements (match deposits to reported revenue)
• Accounts receivable aging report (old receivables are often uncollectable and shouldn't be included in the purchase price)
• Current lease agreement and any correspondence with the landlord
• Employee agreements, non-competes, and compensation structure
• Customer contracts (are they assignable? do they auto-renew? can customers cancel on 30 days notice?)
• Any pending litigation, liens, or regulatory issues (Florida, Texas, and California each have state-specific licensing databases you can search independently)

Hire a CPA with business acquisition experience to review the financials — not just any accountant. The cost is typically $1,500–$5,000 and has saved buyers from six-figure mistakes more times than anyone can count.

Working With a Business Broker as a Buyer

In most transactions, the seller pays the broker's commission — so using a broker's services as a buyer costs you nothing directly. More importantly, an experienced broker brings deal flow, financing relationships, and transaction management expertise that moves closings from intent to funding. Barrett Henry works directly with buyers and sellers in Florida, and connects buyers in other states with vetted brokers through his nationwide referral network who know their local markets — because a food service business in Nashville trades differently than one in Phoenix or Portland, and local market knowledge is not a luxury.

If you're serious about buying a business, the right move is to get pre-qualified with an SBA lender, define your target criteria, and connect with a broker who can bring you vetted opportunities. Spending six months searching BizBuySell on your own and submitting lowball offers based on guesswork is not a strategy — it's a time tax you don't have to pay.