How This Business Acquisition Calculator Works
Most people assume buying a business requires a huge pile of cash or an SBA loan. In reality, experienced acquirers structure deals so the business pays for itself — using a combination of funding layers known as a deal stack. This calculator models all seven layers in one place:
- Valuation first. The tool compares the seller's asking price to fair market value (SDE/EBITDA × industry multiple). You should rarely pay more than the lower of the two.
- Asset-based funding. The company's own balance sheet — receivables, inventory, equipment, real estate — can be converted to cash at closing through factoring, sale-leasebacks, consignment, and refinancing.
- Seller financing. The single most powerful lever. Motivated sellers routinely carry 30–80% of the price as a note paid from future cash flow.
- Earnouts. Part of the price is only paid if the business hits agreed performance targets — aligning incentives and lowering closing cash.
- Debt assumption. Taking over existing liabilities "subject-to" reduces the cash purchase price dollar-for-dollar.
- Equity partners. Operating partners buy in for a stake, and outside investors purchase equity priced off the full valuation.
- IP monetization. Patents, trademarks, and proprietary data can be licensed or financed to produce additional closing cash.
Stack enough layers and the net cash out of pocket drops to zero — or even goes negative, meaning you're paid to take over the company. The calculator updates in real time as you adjust any assumption.
When to Walk Away From a Deal
A calculator can model the structure, but discipline closes good deals. Watch for these red flags: an asking price far above the industry multiple with no defensible reason, sellers who refuse any financing or earnout (often a signal they don't trust the business's future), declining revenue hidden behind one-time spikes, and customer concentration above 30%. The "multiple delta" figure in section 1 shows instantly how far the ask deviates from market norms — anything above 1× over the industry multiple needs strong justification like recurring revenue, defensible IP, or strategic synergies.
Acquisition Guides
Seller Financing Explained
How to negotiate the seller carrying 30–80% of the price — structures, terms, and scripts.
Asset-Based Deal Funding
Factoring, sale-leasebacks, consignment, and 9 other ways the business funds its own purchase.
Valuation Multiples Guide
SDE vs EBITDA, typical multiples by industry, and how to justify a lower offer.
Every Input Explained
What data you need to analyze a deal, what each number means, and where to find it.
Buy With No Money Down
A realistic guide to low- and no-money-down acquisitions — and when they actually work.
Earnout Agreements
Structures, worked examples, and the disputes to avoid when part of the price is performance-based.
SaaS & Recurring Revenue
ARR, MRR, churn, LTV, the Rule of 40, and the multiples recurring-revenue businesses sell for.
Due Diligence Checklist
Financial, legal, operational, and customer verification — plus the red flags that kill deals.
What Sellers Really Want
The real motivations behind a sale and how to use them to win better terms.
SBA Loan vs Seller Financing
A side-by-side comparison — and why the strongest deals combine both.
Frequently Asked Questions
Can you really buy a business with no money down?
Yes, in many cases. By combining seller financing, funding drawn from the business's own assets (receivables factoring, sale-leasebacks, inventory consignment), earnouts, and equity partners, the total funding stack can equal or exceed the purchase price — reducing your cash at closing to zero. It requires a motivated seller and a business with a healthy balance sheet, which is exactly what this calculator helps you assess.
What is a "deal stack"?
A deal stack is the layered combination of funding sources used to pay for an acquisition: seller financing, asset-based funding, assumed debt, earnouts, investor capital, and operator equity. Each layer reduces the cash the buyer must personally bring to closing.
What's the difference between SDE and EBITDA?
SDE (Seller's Discretionary Earnings) adds the owner's salary and personal perks back to profit — it's the standard for businesses under roughly $1M in earnings. EBITDA assumes a market-rate manager replaces the owner and is used for larger companies. Use whichever figure your industry's multiples are quoted in.
What percentage will a seller typically finance?
Seller financing commonly covers 10–60% of the purchase price, and highly motivated sellers (retirement, health, burnout) sometimes carry 80% or more. The seller's reason for leaving is the single best predictor — always find out what they plan to do after the sale.
What is a carveout?
A carveout is any asset excluded from the sale — for example, the seller keeps their personal securities account or a company vehicle. Carveouts reduce what you're buying, so they reduce the price you should pay. The calculator subtracts them automatically.
Is my data stored anywhere?
No. Every calculation runs locally in your browser. Nothing you type is uploaded, stored, or shared.
How much money do I actually need to buy a business?
For a conventional purchase, expect a down payment of roughly 20–30% of the price (about 10% with an SBA loan). But "how much of your own money" is the better question — by layering seller financing, asset-based funding, and partners, buyers routinely close with a fraction of that, and occasionally nothing out of pocket. Use the calculator to find your specific number.
Is seller financing actually common?
Yes — it's the norm, not the exception. The large majority of small-business sales include at least some seller financing, because the pool of buyers who can pay all-cash is small and financing lets sellers command a higher price and defer taxes. See the seller financing guide.
How do I know if a business is priced fairly?
Compare the asking price to fair market value: multiply the business's SDE or EBITDA by the typical multiple for its industry and size, then check against comparable sales. If the ask is well above that, it's overpriced unless there's a strong reason (recurring revenue, defensible IP, fast growth). The calculator flags this automatically with the "multiple delta."
How long does it take to buy a business?
Typically 2–6 months from first conversation to closing. Seller-financed deals can move faster; SBA-financed deals are slower due to underwriting. The bottleneck is usually due diligence — verifying the financials and contracts before you commit.
What credit or qualifications do I need for seller financing?
Because the seller acts as the bank, they'll usually vet you much like a lender would — reviewing your credit, relevant experience, and a personal financial statement, and typically requiring a personal guarantee. Strong credit and demonstrated competence to run the business matter more than a specific score.
What are the biggest red flags when buying a business?
Customer concentration (one client >10–15% of revenue), declining margins with no clear cause, heavy owner dependence, revenue that doesn't reconcile to tax returns, undisclosed liabilities or litigation, and a seller who won't explain why they're selling or refuses any financing. See the due diligence checklist.
What does it mean that a business is "owner-dependent"?
It means the business relies on the current owner's relationships, skills, or daily involvement to function. If those leave with the seller, you may be "buying a job" rather than a self-sustaining business — which lowers what it's worth and raises your risk. Always ask what happens to revenue when the owner steps away.
Do I need a business broker to buy a business?
No, but brokers can surface listed deals and help with paperwork. Many of the best opportunities are off-market — found by approaching owners directly — which is also where motivated sellers and flexible terms tend to be. Either way, engage your own attorney and CPA; a broker typically represents the seller.