Before buying an existing business, you need to confirm three things above everything else: that the cash flow shown in the listing is real and provable on tax returns and bank statements, that you know the full debt and liabilities you may be inheriting, and that you have enough capital to survive the first 90 days after closing when revenue often dips during the ownership transition. Everything else — the seller's story, the equipment list, the "growth potential" — is secondary to verified cash flow and a funded runway. A business that looks profitable on a broker's summary but can't back it up with a Schedule C, filed returns, and matching bank deposits is not the business you think you're buying. This guide walks through what to verify, how acquisition deals are commonly structured (down payment, seller note, lender financing), and how to fund both the purchase and the working capital you'll need right after the keys change hands.
Key takeaways
- Buyers who confirm cash flow against filed tax returns and bank deposits — not just the seller's profit-and-loss statement — avoid the single most common acquisition mistake: paying for earnings that don't exist.
- Most small-business acquisitions are financed with a mix: a buyer down payment (often 10-30% of price), a seller note carrying part of the balance, and outside financing for the rest.
- Working capital is separate from the purchase price. Plan for the first 60-90 days of payroll, rent, and inventory as if revenue could temporarily drop during the transition.
- Revenue-based financing and MCA-marketplace funding approve primarily on bank-deposit history and monthly revenue rather than credit score — useful for post-close working capital when a FICO is 500+ and monthly deposits are steady.
- An asset purchase (buying the assets, not the legal entity) generally protects the buyer from the seller's unknown past liabilities better than a stock/entity purchase.
- A seller who refuses to carry any financing is signaling something — a seller note is often the strongest vote of confidence that the numbers are real.
- Typical revenue-based funding for post-close needs starts around $10,000 with 24-48 hour decisions, and is never guaranteed — approval depends on verified deposits and revenue.
Verify the cash flow before you fall in love with the business
The number that matters most in any acquisition is seller's discretionary earnings (SDE) — roughly the net profit plus the owner's salary, benefits, and one-time or personal expenses added back. Brokers build a listing around SDE because the asking price is usually a multiple of it. Your job is to prove that number is real before you trust it.
Ask for and cross-check these against each other:
- Three years of filed federal tax returns. Not a QuickBooks export — the actual returns the seller sent the IRS. People rarely overstate income to the IRS.
- Three years of profit-and-loss statements and balance sheets. Compare the P&L bottom line to the tax return. Gaps need an explanation.
- 12 months of business bank statements. The deposits should roughly match reported revenue. If the P&L says $600,000 in sales but deposits total $400,000, either there's unreported cash (a risk you can't finance or verify) or the P&L is inflated.
- Add-backs, itemized. Every add-back to SDE should be a specific, documented expense — not a vague "owner ran personal costs through the business." Scrutinize add-backs; they inflate the price.
When bank deposits, tax returns, and the P&L all tell the same story, you have verified cash flow. When they don't, you have a negotiation — or a walk-away.
Know exactly what you're buying: assets vs. the entity
How you buy matters as much as what you pay. There are two basic structures, and the difference protects — or exposes — you.
Asset purchase. You buy the equipment, inventory, customer lists, name, and goodwill, but not the legal entity. The seller's old company keeps its history, including debts and liabilities you didn't know about. For most first-time buyers of small businesses, this is the safer path.
Stock or entity purchase. You buy the company itself — and everything attached to it, including tax liens, pending lawsuits, unpaid vendor accounts, and warranty obligations. It's sometimes necessary (non-transferable licenses, contracts, or leases can force it), but it demands far deeper legal due diligence.
Whichever structure, run these checks before closing:
- A UCC lien search at the state level to see who already has a claim on the business's assets. Existing merchant-cash-advance or equipment liens can block your own financing.
- Verify the business is in good standing with the Secretary of State.
- Confirm any lease is assignable — a business tied to a location is worthless if the landlord won't let you take over the lease on comparable terms.
- Check that key licenses, permits, and supplier contracts transfer to a new owner.
Understand how acquisition deals are actually structured
Very few buyers write one check for the full price. A realistic acquisition stacks several sources of capital, and understanding the stack helps you negotiate and know what you'll need to fund.
- Buyer down payment. Commonly 10-30% of the purchase price, in cash from the buyer. This is your skin in the game and what most lenders want to see.
- Seller financing (seller note). The seller carries part of the price and you pay them over time, usually with interest. This is the buyer's best friend for two reasons: it lowers the cash you need up front, and a seller willing to carry a note is betting the business will keep performing — a strong signal the numbers are honest.
- Outside financing. An SBA 7(a) loan is the classic tool for acquisitions and offers long terms, but it is slow, paperwork-heavy, and can take months. Conventional bank loans are similar. These fund the purchase itself when you qualify and can wait.
- Working capital. A separate need — see the next section. This is the operating cash you use after closing, not part of the purchase price.
For a broader view of how these tools compare, see our business acquisition financing guide and our working capital pillar.
Example deal structure and where the money comes from
The table below is a for example illustration only — not a quote, and not a promise of terms. It shows how a mid-sized acquisition might be assembled and where working capital fits in. Figures are round numbers chosen to make the structure clear.
| Piece of the deal | For-example amount | Typical source | What it covers |
|---|---|---|---|
| Purchase price | $400,000 | — | Agreed value of the business |
| Buyer down payment | $80,000 (20%) | Buyer's own cash | Skin in the game; what lenders expect |
| Seller note | $80,000 (20%) | Seller carries balance | Lowers cash needed; signals seller confidence |
| Acquisition loan | $240,000 (60%) | SBA / bank financing | Bulk of the purchase price |
| Post-close working capital | $25,000+ | Revenue-based / MCA marketplace | Payroll, rent, inventory for first 60-90 days |
Notice that working capital sits outside the purchase math. Buyers routinely fund the acquisition perfectly and then get squeezed in month two because every dollar went into the price and none into operating cash. Plan the runway before you close, not after.
Fund the first 90 days — the transition gap most buyers miss
Ownership transitions are rarely seamless. Some customers wait to see if the new owner is any good. A key employee leaves. A supplier tightens terms for the unfamiliar buyer. Revenue can dip for a quarter even when nothing is fundamentally wrong. If you've spent your last available dollar on the down payment, that normal dip becomes a crisis.
This is where revenue-based financing and MCA-marketplace funding earn their place. These options approve primarily on the business's bank-deposit history and monthly revenue rather than a credit score, which fits the moment: you're buying a business with a real deposit track record, and you may not yet have strong personal or business credit tied to it.
Typical profile for this kind of post-close working capital:
- Funding amounts commonly starting around $10,000 and scaling with monthly revenue.
- Approval geared to bank deposits and revenue over credit, with FICO 500+ often workable.
- Decisions in roughly 24-48 hours — fast enough to cover a payroll gap.
- Repayment tied to a share of ongoing revenue, so it flexes with your cash flow.
It is never guaranteed — approval and terms depend on verified deposits and revenue. Use it as a deliberate runway tool, not a rescue after you've already run dry, and price the cost of capital into your first-90-days plan.
Decision framework: when buying this business makes sense
Not every deal is worth doing, and not every good deal is right for you. Use this framework to pressure-test the acquisition before you sign.
This acquisition works best when:
- Cash flow is verified three ways — tax returns, P&L, and bank deposits all agree.
- The seller will carry a note, showing they believe the business will keep performing.
- The business isn't a one-person show — it has systems, staff, or recurring customers that survive the owner leaving.
- You have a funded runway for the first 60-90 days separate from the purchase price.
- The lease, licenses, and key contracts transfer cleanly to you.
- Deposits are steady month to month, which also makes post-close working capital easier to secure.
Avoid or slow down when:
- The seller can't or won't produce filed tax returns, or the returns don't match the P&L.
- A large share of revenue depends on the departing owner's personal relationships.
- The business relies on unreported cash you can't verify or finance against.
- A single customer is more than ~20-30% of revenue.
- UCC searches reveal existing liens the seller can't clear before closing.
- You'd have zero working-capital cushion after the down payment.
- The seller refuses all financing and wants only full cash at close — ask hard why.
Build your due-diligence checklist before you make an offer
Put your diligence in writing and make the purchase agreement contingent on completing it. A serious seller expects this; a defensive one is a warning sign. At minimum, work through:
- Financial: three years of tax returns, P&Ls, balance sheets, 12 months of bank statements, current accounts receivable and payable, and an itemized add-back list.
- Legal: entity good standing, UCC lien search, any pending or past litigation, and the assignability of leases and contracts.
- Operational: customer concentration, supplier terms and dependencies, employee roster and who is at risk of leaving, and the condition and ownership of equipment.
- Deal: asset vs. entity structure, seller note terms, a non-compete from the seller, and a transition/training period written into the agreement.
- Capital: confirmed down payment, acquisition financing, and a funded working-capital plan for the first 90 days.
Bring in a CPA to read the financials and an attorney to paper the deal. Their fees are trivial against the cost of buying earnings that turn out to be fiction. Diligence isn't a formality — it's the whole job of being a buyer.
Frequently asked questions
How much cash do I need to buy an existing business?
Plan for a down payment in the range of 10-30% of the purchase price, plus working capital for the first 60-90 days that sits outside the price. The rest is usually covered by a seller note and outside financing. The exact down payment depends on the deal structure and what lenders require, but the mistake to avoid is spending every dollar on the price and leaving nothing for operating cash after closing.
What's the most important thing to verify before buying?
Verified cash flow. Cross-check the seller's discretionary earnings against three sources: filed federal tax returns, profit-and-loss statements, and 12 months of business bank statements. When all three agree, the earnings are real. When they don't — especially if bank deposits fall short of reported revenue — treat it as a red flag and either renegotiate or walk away.
Should I buy the assets or the whole company?
For most first-time buyers, an asset purchase is safer because it generally leaves the seller's past liabilities — tax liens, lawsuits, unpaid debts — with the old legal entity rather than transferring them to you. A stock or entity purchase brings everything, good and bad, and requires much deeper legal due diligence. Non-transferable licenses or contracts sometimes force an entity purchase; have an attorney confirm which structure your deal needs.
Why does seller financing matter so much?
A seller note lowers the cash you need up front, but its bigger value is as a signal. A seller willing to carry part of the price is betting the business will keep performing well enough for you to pay them back. A seller who insists on all cash and no note may be trying to get out before problems surface. It's worth asking directly why a seller won't carry any financing.
How do I fund working capital right after closing?
Revenue-based financing and MCA-marketplace funding are built for this because they approve primarily on the business's bank-deposit history and monthly revenue rather than on credit score. Amounts commonly start around $10,000, decisions come in roughly 24-48 hours, and FICO 500+ is often workable. Repayment flexes with a share of ongoing revenue. It's never guaranteed — approval depends on verified deposits — so line it up before you close, not after you've run short.
What if the seller reports a lot of cash income that isn't on the books?
Be very cautious. Unreported cash can't be verified, can't be financed against, and often doesn't survive the ownership change — customers who paid the old owner in cash may not do the same for you. Value the business only on the income you can prove through tax returns and bank deposits. If most of the profit lives in cash that isn't documented, you're paying for earnings you can neither confirm nor bank on.
How long does acquisition financing take?
It depends on the tool. SBA and conventional bank loans offer long terms and low rates but can take weeks to months and demand extensive paperwork. Seller financing is as fast as the two parties agree. Revenue-based working-capital funding for the post-close period is the fastest, often 24-48 hours, because it underwrites on deposits and revenue. Many buyers combine a slower acquisition loan for the purchase with fast revenue-based funding for the first-90-days runway.
What's a fair price for a small business?
Small-business prices are usually a multiple of seller's discretionary earnings, and the right multiple varies widely by industry, growth, customer concentration, and how transferable the business is without the current owner. Rather than anchoring on the broker's asking multiple, verify the earnings first, then judge the multiple against the risks you've uncovered in diligence — a high customer concentration or an owner-dependent business justifies paying less.
