The best business valuation tools, by use case
There's no single best tool to value a business. The right one depends on why you're asking. Here are the five real options, what each costs, where each falls short, and when to reach for it.
Search "business valuation tools" and you'll get a wall of calculators all promising to tell you what your company is worth in thirty seconds. Some of that is useful. A lot of it oversells what a tool can do. So this is the honest version: five categories of valuation tool, ranked by what they're good at rather than by who paid for placement.
The thing to hold onto before you pick one: a calculator gives you a range to orient yourself. A professional gives you a number you can defend. They're different jobs, and using the wrong one for the wrong moment is how owners end up either underpricing a sale or paying for an appraisal they didn't need.
1. Free online valuation calculators
The most accessible starting point. You plug in your annual earnings, pick your industry, and the tool multiplies your profit by a typical industry multiple to spit out a value range. ProCloser's free business valuation calculator works this way: it takes your SDE (for owner-operated businesses) or EBITDA (for larger ones), applies the going multiple for your sector, and returns an indicative range in seconds. No email needed for the estimate.
Good for: getting your bearings. If you've never put a number to your business, a calculator turns a vague worry into a concrete starting figure you can react to.
Cost: free.
Limitations: a calculator can only see the numbers you type in. It can't judge whether your revenue is recurring or one-off, whether one client is 40% of your sales, whether the business runs without you, or what buyers in your niche are actually paying this quarter. Two businesses with identical earnings can be worth very different amounts, and a calculator can't tell them apart. The output is a range, not a quote.
When to use it: first, always. It costs nothing and takes a minute. Just don't make a decision on the number alone. Want the math behind it? See how much is my business worth for a plain-English walkthrough.
2. Broker and marketplace estimators
Business-for-sale marketplaces and brokerage sites often bundle their own valuation estimators, usually fed by listing and sale data from their platform. Some lean on comparable-listing data, which can be a useful reality check on what similar businesses are asking.
Good for: seeing rough comparables in your category and getting a feel for the listing market.
Cost: typically free, though many are a front door to a brokerage's services.
Limitations: asking prices aren't sale prices, and listing data skews toward whatever happens to be on that platform. There can also be a built-in incentive to produce a number that gets you to list. Read the output as one data point, not gospel.
When to use it: alongside a calculator, to sanity-check the range against what's visibly on the market. Cross-reference rather than rely.
3. Accountant or CPA-led valuations
Here you move from tool to professional. A CPA who does valuation work will dig into your actual financials, normalize your earnings, sort out the add-backs, and produce a documented valuation rather than a quick estimate.
Good for: a credible, defensible figure backed by someone who has examined your books. Useful for internal planning, buy-sell agreements, and conversations with lenders or partners.
Cost: paid. Typically from a few thousand dollars into five figures depending on the complexity of the business and the depth of the report.
Limitations: a CPA's strength is your financials and the accounting, which isn't always the same as a live read on the deal market. A textbook-correct number can still miss what a strategic buyer would actually pay. And a CPA who doesn't specialize in your industry may lean on generic multiples.
When to use it: when you need a documented number for a real decision but aren't necessarily heading straight to market. Tax planning, structuring a partner buyout, getting your house in order. Loop your CPA in early on the tax side regardless of who values the business.
4. Certified business appraisers
The most rigorous and formal option. Certified appraisers (holding credentials such as ABV, ASA, or CVA) produce a full, independent valuation report built to withstand scrutiny from courts, the IRS, and opposing parties.
Good for: situations where the number has to hold up legally. Estate and gift tax, divorce, shareholder disputes, litigation, ESOPs, and some SBA-backed financing all call for an independent certified appraisal.
Cost: paid, and generally the most expensive of these options because of the credentialing, independence requirements, and documentation involved.
Limitations: it's overkill for an ordinary sale. A certified appraisal is built for defensibility, not for getting you the highest price in a competitive process, and it takes longer and costs more than most sellers need.
When to use it: when a third party needs to trust the number. A judge, the IRS, a lender, a co-owner. Not because you're curious what your business is worth.
5. M&A advisor indicative valuations
If your actual goal is to sell, this is usually the most useful read you can get. A good M&A advisor or broker who closes deals in your industry will give you an indicative valuation grounded in what buyers are paying right now for businesses like yours. Not a textbook multiple. Live market reality.
Good for: sellers preparing to go to market. An advisor factors in growth, recurring revenue, customer concentration, owner dependence, and current buyer appetite, then tells you honestly what it would take to hit the top of the range.
Cost: the indicative valuation is often free, provided as part of an advisor evaluating whether to take you on. That's how ProCloser's matching works. We connect you with vetted advisory firms, including no-retainer options, and the indicative valuation comes as part of the process. Free to sellers, confidential.
Limitations: an advisor's pitch valuation can run optimistic to win your business, so weigh it against your calculator range and ask how they got there. And it's a starting estimate, not a guaranteed price; the market sets the final number.
When to use it: when you're seriously considering a sale in the next year or two. Pair it with the steps in our guide to selling your business.
Free vs. paid, indicative vs. defensible
The clearest way to choose is to map the tools on two axes: how much they cost, and how much weight the number can carry.
| Tool | Cost | What the number is |
|---|---|---|
| Online calculator | Free | Indicative range |
| Broker / marketplace estimator | Free | Indicative, market-flavored |
| M&A advisor valuation | Often free | Indicative, live-market |
| CPA-led valuation | $$ | Documented, defensible |
| Certified appraisal | $$$ | Independent, legally defensible |
Most owners only ever need the free tools plus, when it's time to sell, an advisor. The paid appraisal route exists for when a number has to survive a courtroom or a tax filing, not for satisfying curiosity.
So which should you actually use?
Start with a free calculator to get a range. If the number matters for a decision, get it reviewed: an M&A advisor if you're selling, a CPA if you're planning, a certified appraiser if the law requires it. The mistake isn't using a free tool. It's stopping at the free tool when the stakes call for more, or paying for a formal appraisal when a quick estimate would have done the job.
For the underlying methods behind every tool on this list, read business valuation methods explained.
Frequently asked questions
What is the best business valuation tool?
There's no single best one. It depends on why you need the number. For a fast, free starting point, an online calculator that applies an industry SDE or EBITDA multiple is the most accessible. For a number you can defend to a buyer, lender, or court, you need a CPA-led valuation or a certified appraiser. For sellers heading to market, an M&A advisor's indicative valuation is usually the most useful, because it reflects what buyers are actually paying now.
Are free business valuation calculators accurate?
They give you an indicative range, not a precise or defensible figure. A calculator applies a typical industry multiple to your earnings, which is useful for orientation, but it can't see revenue quality, growth, customer concentration, owner dependence, or current market conditions. Treat the output as a starting point and get it reviewed before you act on it.
How much does a business valuation cost?
Online calculators are free. A formal CPA-led valuation typically runs from a few thousand dollars into five figures depending on complexity. A certified appraisal for legal or tax purposes is usually the most expensive. An M&A advisor's indicative valuation is often free as part of evaluating you as a client. Costs vary by provider, region, and how complex the business is.
Do I need a certified appraiser to sell?
Usually not, for an ordinary private sale. Most owner-operated and lower-middle-market businesses sell on a price set by what buyers will pay, guided by an advisor or broker. A certified appraisal becomes necessary when a defensible, independent number is required: estate or gift tax, divorce, partner buyouts, litigation, or some SBA financing. If you just want to sell, start with an advisor and bring in an appraiser only if the situation demands it.
Start free, then get it reviewed.
Run your numbers through the free calculator, then let us match you with a vetted M&A advisor in your industry for a confidential, indicative valuation grounded in today's market. Free to sellers. No retainer to find out.