How to analyze a business before you buy it

You found a listing that looks good. The broker's summary says it earns $300K a year, the price feels almost reasonable, and part of your brain is already rearranging your life around owning it. This is exactly the moment to slow down — because analyzing a business before you buy it is the one skill that separates the buyers who build wealth from the buyers who spend years paying for someone else's problems.

Start with two questions, not twenty

Every deal analysis is really answering two things. Fit: is this a business you should own — does it match your skills, your capital, your location, the hours you're willing to work? And numbers: does it actually make money, and is the price connected to reality? A business can pass one and fail the other. A great HVAC company is still the wrong deal if you live two states away and hate managing technicians. Answer fit first; it's free, and it eliminates half of the listings before you spend an hour on spreadsheets.

Step 1: Verify the earnings are real

Small businesses are usually priced on SDE — seller's discretionary earnings, meaning the profit plus the owner's salary and perks, the total financial benefit one working owner takes out of the business. The listing's SDE number is a claim, not a fact. It's built from add-backs — expenses the seller says a new owner won't have — and add-backs are where optimistic sellers quietly inflate a business's profit. A one-time lawsuit? Fair add-back. "My spouse's salary, but she barely works here"? Now you're negotiating.

Ask for three years of profit-and-loss statements and three years of business tax returns, then compare them. Sellers rarely overstate income to the IRS, so the tax returns are your anchor. We wrote a full guide to telling legitimate add-backs from inflated ones — it's the single highest-leverage skill in deal analysis.

Step 2: Read the trend, not the average

A broker package that says "averages $290K SDE over three years" can describe two very different businesses: one that earned $250K, then $290K, then $330K — and one that earned $330K, then $290K, then $250K. Same average. Opposite stories. You're not buying the average; you're buying next year.

Lay the years side by side and look at revenue, gross margin, and SDE separately. Revenue up while margin falls means the business is buying growth. Revenue flat while SDE jumps means costs got cut — ask which ones, because deferred maintenance and gutted advertising both look like profit for exactly one year.

Step 3: Scan for the deal-killers

Certain problems sink more deals than everything else combined: one customer who is 40% of revenue, a business that can't run a week without the seller, a lease with two years left and no renewal option, cash revenue the books can't prove. None of these are always fatal — but every one of them changes what the business is worth and what you should ask for in the deal. The full list, and what to do when you spot each one, is in our guide to red flags when buying a small business.

Step 4: Test the price against the debt

Here's the test most first-time buyers skip: a price isn't good or bad in the abstract — it's good or bad after the loan payments. Lenders call this the DSCR, the debt-service coverage ratio: the business's cash flow divided by the annual loan payments. Most lenders want at least 1.25.

A worked example. Say a business earns $240K in SDE and the asking price is $850K. You buy it with an SBA loan — 10% down, roughly $765K financed over 10 years at 10.5% — and the payments come to about $124K a year. Take out a fair salary for the manager the business needs (you), say $90K, and the cash flow left to cover that $124K of debt is about $150K. That's a DSCR of roughly 1.2 — just under the line. This deal isn't dead, but the price, the down payment, or the structure has to move. That's not a feeling; it's arithmetic you can show a seller. (Terms vary by lender and by year — the SBA's 7(a) program page has the current rules, and your lender will have their own overlay.)

Step 5: Ask before you assume

By this point you'll have a list of things the documents can't answer — why revenue dipped in year two, who really manages the crews, what happens to the two biggest accounts when the seller's name comes off the door. Good. Analysis isn't just reading; it's knowing what to ask the seller before you make an offer, and paying attention to which questions get straight answers and which get stories. A seller who welcomes hard questions is telling you something. So is a seller who doesn't.

What this looks like in practice

The honest workflow: screen for fit in minutes, run steps one through four in an evening or two, and only then invest real weeks — and real money for a CPA and attorney — in the deals that survive. Stay excited; buying the right business is one of the best financial moves a regular person can make. But make every deal prove itself. Scope the numbers before you fall for the story, and you'll walk away from the mirages with your capital — and your confidence — intact.

FAQ

How long does it take to analyze a business before buying it?

A first screen — fit, rough numbers, obvious risks — should take hours, not weeks. Full due diligence after an accepted offer typically runs 30 to 90 days. The expensive mistake is spending diligence-level weeks on deals a one-evening screen would have eliminated.

What financial documents should I ask for?

At minimum: three years of P&Ls, three years of business tax returns, a current balance sheet, and the seller's add-back list. The tax returns are the anchor — compare everything else against them.

Can I analyze a business myself, or do I need an accountant?

Do the first screen yourself — it's how you learn the business and avoid paying professionals to evaluate deals that were never real. Bring in a CPA before you close, and consider a quality-of-earnings review on larger deals. None of this article is advice for your specific deal; confirm the specifics with your own CPA and attorney.

What is a good DSCR when buying a business?

Most lenders want at least 1.25 — cash flow covering loan payments 1.25 times over. Under that, expect the lender to push for a lower price, more down, or seller financing on standby.

Educational content, not financial, legal, or tax advice for your situation — confirm specifics with your own CPA and attorney. Written by Mark Higbee, Scope co-founder, who is going through the buying process himself.