Calculate the ROI on a Business Purchase

Return on investment measures a business's yearly earnings as a percentage of what it costs to buy. It's the classic ROI formula — Net Return ÷ Total Investment × 100 — measured on a single year's earnings.

Here, the "net return" is the cash flow left after paying a market wage for whoever runs the business, and "total investment" is the full purchase price (plus any inventory or costs on top). A 25% ROI means the business earns $25 a year for every $100 of price. Because it looks at the whole price — not just the cash you put down — it's a clean way to compare one business to another regardless of how each is financed.

They answer two different questions, and the difference is financing.

ROI measures the return on the full purchase price — it ignores how you pay, so it's the pure "how good is this business for the money?" view.

Cash-on-cash return measures the return on just the cash you personally invest after taking a loan. Because leverage lets you control the whole business with a fraction of the price, cash-on-cash usually runs higher than ROI on the same deal.

If you pay all cash, the two are identical — there's no loan to create a gap. The moment you finance, they diverge. Run the same deal through our Cash-on-Cash Calculator to see the financed view.

They're two sides of the same coin — ROI is simply the inverse of the multiple a business sells for. Flip one and you get the other:

So a business priced at a 4× multiple of its earnings is roughly a 25% return on those earnings — handy, since buyers and brokers usually talk in multiples. One nuance you'll notice in the calculator: the multiple it shows follows the market convention of using SDE (the full cash flow on most listings), while the ROI additionally sets aside a market salary for whoever runs the business. So your ROI runs a little below a simple 1 ÷ multiple — and that small gap is the cost of the owner's labor. For current, industry-specific multiples, see our Industry Valuation Multiples.

Small businesses generally trade at higher returns than passive investments, because owning one carries more risk and often more work. As a rough guide:

These are reference points, not rules. A lower ROI on a stable, established business can be worth more than a high ROI on a fragile one, and ideal ranges vary by industry. Treat it as a directional screen and verify the earnings before trusting the number.

Because someone has to run the business — and that work has a cost, whether it's you doing it or a manager you hire.

Most listings show cash flow as Seller's Discretionary Earnings (SDE), which includes the current owner's salary. That's the right figure for "what does a full-time owner take home," but it overstates the return on your investment, because it counts your paycheck as if it were profit on your money. Subtracting a fair market wage separates the two, so the ROI reflects a true return on capital.

This is essentially the difference between SDE and EBITDA, the metric used for larger, manager-run businesses. Our guide on Cash Flow vs. EBITDA breaks down when each applies.

No. This is a pre-tax snapshot of a single year's earnings against the price, so it deliberately leaves out several things: future growth in the business, your tax bill, and any profit from eventually reselling.

That keeps it a fast, clean screen — but it also means a low first-year ROI on a fast-growing business can understate the real opportunity, and a high ROI on a declining one can flatter it. ROI is a starting point; for a return that accounts for timing and an eventual exit, buyers turn to more advanced measures like internal rate of return (IRR).

If you have to buy it separately, yes. In many retail, wholesale, and distribution deals, inventory is sold on top of the asking price — and it's real money you have to put in, so it belongs in the total investment.

It can move the number meaningfully. Picture a business priced at $10M that earns $2M — that's a 20% ROI. But if you also have to buy $5M of inventory, your true investment is $15M, and the ROI drops to about 13%. Use the "Additional Investment" field to capture inventory or other take-over costs, or leave it at $0 if they're already included in the price.

Not on its own. A high ROI means a low price relative to earnings — which is sometimes a bargain, and sometimes a warning. A business may be priced cheaply because it's declining, overly dependent on the current owner, concentrated in one customer, or sitting on a shaky lease.

Before trusting a high number, confirm the earnings are real and durable, and look at what's behind the discount. A dependable 20% return can easily beat a fragile 40% one. Use ROI alongside working capital, debt coverage, and a hard look at the quality of the earnings.

No. This tool provides educational estimates only, to help you screen and compare deals quickly. Real returns depend on the specific business, its industry, how the deal is financed, and your own tax situation — and cash flow figures should always be verified, never taken at face value. Confirm the numbers with your accountant, lender, and advisors before signing a letter of intent or committing capital.