Buying a business usually takes 1.5 to 2 times as much cash as the sticker price suggests. On a $500,000 acquisition financed through an SBA loan, expect to need roughly $100,000 to $175,000 in liquid funds once you cover the down payment, closing costs, and enough working capital to keep the doors open in the first weeks. So the practical answer to how much money you need to buy a business is somewhere between 20% and 40% of the purchase price in personal cash, and the range depends almost entirely on which financing path you use and how much reserve you keep behind you.
Down Payment by Financing Path
The single biggest driver of your cash requirement is the loan structure. Three paths dominate small business acquisitions, and each sets a different equity bar.
SBA 7(a) Loans
The SBA 7(a) program is the most common tool for acquisition financing. For a complete change of ownership, the SBA requires a minimum equity injection of 10% of the total project cost, which covers everything needed to close the deal, not just the purchase price.1Congress.gov. Changes to Small Business Administration (SBA) Business Loan Program Policies in Early 2025 On a $1,000,000 acquisition with $50,000 rolled in for closing costs and working capital, the total project cost is $1,050,000, and the minimum injection is $105,000.
The SBA is strict about where that money comes from. Acceptable sources include unborrowed cash, personal savings, and personal loans with an outside repayment source, meaning the business itself cannot be repaying the loan. A seller note can count toward part of your injection, but only if it stays on full standby for the life of the SBA loan and covers no more than half of the required equity. On a 10% requirement, a standby seller note can cover at most 5%.
One advantage of the 7(a) is that working capital can be built into the total project cost, so you can borrow for early operating needs instead of paying entirely out of pocket.2U.S. Small Business Administration. Terms, Conditions, and Eligibility The current maximum 7(a) loan amount is $5 million.
Conventional Bank Loans
Without an SBA guarantee, banks bear the full default risk and price that into the equity requirement. Most conventional lenders ask for 20% to 30% down on the purchase price. On a $1,000,000 deal, that means $200,000 to $300,000 in cash, two to three times what the SBA minimum would require.
Seller Financing
When a seller carries part of the note, your cash need at closing can drop, but it rarely disappears. If a bank finances the remainder, that bank still expects your own equity in the deal. Even where the seller finances half the price, a 5% to 10% buyer contribution is standard. Sellers who carry paper also tend to charge interest slightly above bank rates and to set shorter payoff terms, so run the total debt service through your projections, not just the closing math.
Retirement Funds Through ROBS
A Rollover for Business Startups (ROBS) lets you use 401(k) or IRA funds to invest in the business without triggering early withdrawal taxes or the 10% penalty that normally applies to distributions before age 59½.3Internal Revenue Service. Guidelines Regarding Rollover as Business Start-Ups The structure involves forming a C corporation, setting up a 401(k) under it, rolling existing retirement funds into the new plan, and having the plan buy stock in the corporation. The proceeds fund the deal.
The tradeoffs are real. Setup fees from third-party administrators typically run $5,000 to $6,000, ongoing administration adds $150 or more per month, and custodian fees run $500 to $1,000 per year. Prohibited transaction penalties start at 15% of the amount involved and can reach 100% if the issue is not corrected.3Internal Revenue Service. Guidelines Regarding Rollover as Business Start-Ups And if the business fails, the retirement savings you rolled in are gone.
Closing Costs and Professional Fees
Budget roughly 3% to 5% of the purchase price for closing costs and professional fees combined. Complex deals push higher. Almost all of these bills are due at or shortly before closing.
Legal Fees
An attorney drafts or reviews the Asset Purchase Agreement or Stock Purchase Agreement, handles transfer of title, and works to see that liabilities are disclosed or carved out. Straightforward small business acquisitions typically run $5,000 to $15,000 in legal fees. Deals with intellectual property, commercial leases, or multiple entities cost more.
Accounting and Due Diligence
A CPA reviews the seller’s financial statements, tax returns, and bookkeeping for accuracy. Lenders use IRS Form 4506-C to pull the seller’s tax transcripts directly from the IRS and confirm the returns you were shown are the ones actually filed. Thorough financial due diligence runs $3,000 to $10,000 depending on size and complexity.
Loan Fees
Lender origination fees generally fall between 0.5% and 1% of the loan amount. SBA 7(a) loans also carry a one-time guarantee fee paid to the SBA. For FY 2026, the fee varies by loan size and maturity: loans maturing in 12 months or less carry a 0.25% fee on the guaranteed portion, with higher percentages on longer-term and larger loans. Some categories, including loans under $950,000 to manufacturers, have reduced or waived fees.
Environmental Assessments
If commercial real estate is part of the deal, the lender will likely require a Phase I Environmental Site Assessment. These typically cost $1,800 to $6,500 depending on property size, prior use, and location. Former gas stations, dry cleaners, and manufacturing sites are more expensive to assess. If a Phase I flags possible contamination, a Phase II with soil and groundwater sampling adds several thousand dollars more.
Escrow, Lien Searches, Title
Escrow fees pay the neutral third party holding funds at closing. UCC lien searches confirm the equipment and other assets are free of existing creditor claims. Title insurance may apply if real property changes hands. Individually these are small, but together they add up. Allocating an extra 1% to 2% of the purchase price for these line items keeps them from becoming surprises.
Broker Commissions
If a broker represents the seller, the seller pays the commission, though the cost is baked into the asking price. Businesses priced under $1 million typically carry broker fees of 8% to 12% of the sale price. Larger deals often use tiered formulas that start at 10% on the first million and step down. If you engage your own buyer’s broker, you may owe a separate fee, so confirm who pays what before signing any representation agreement.
Working Capital and Operating Reserves
Closing on the business is not the same as being able to run it. From day one you need liquid funds to cover payroll, replenish inventory, and pay vendors who may not extend credit to a new owner.
Working capital is the gap between what the business is owed and what it owes. Transitions strain that gap. Some customers delay payments when ownership changes. Inventory that ran low before closing has to be reordered. Seasonal patterns can suppress revenue right when you need it most. If the seller drew down inventory or collected receivables before closing, the shortfall lands in your account.
Insurance is another immediate cash need. General liability, property, and workers’ compensation policies often require upfront payments before coverage takes effect. Depending on the type of business and headcount, initial insurance costs can range from a few thousand dollars to $10,000 or more. Utility deposits may apply if accounts move to a new entity.
Most financial advisors recommend keeping at least three months of operating expenses in reserve beyond what you spend to close. A business with $25,000 in monthly overhead needs roughly $75,000 sitting behind it as a safety net. Even when your SBA loan includes working capital, lenders want to see additional personal reserves for the unexpected.
Cash Hits That Are Easy to Miss
A few expenses get overlooked in the rush of a deal and can create a squeeze if you have not budgeted for them.
- Earnest money deposit. When you sign a letter of intent or purchase agreement, you typically put down a good-faith deposit, often around 5% of the purchase price, held in escrow until closing. It is credited toward the price if the deal closes, but it ties up cash weeks or months early.
- Licenses and permits. A change of ownership usually means new business registrations, operating licenses, and any industry-specific permits. State filing fees vary widely, and specialized licenses such as liquor or healthcare permits cost significantly more.
- Employee-related liabilities. In an asset purchase, the seller typically terminates employees and you rehire them. Accrued but unpaid vacation or PTO becomes a negotiating point, and whether the seller pays it out or you assume it changes your cash need. Review the employee handbook and any employment agreements during due diligence.
- Bulk sale requirements. Some states require the buyer to notify the seller’s creditors before completing a transfer of business assets. Failure to comply can leave you personally on the hook for the seller’s unpaid taxes and debts. Ask your attorney whether this applies in your state.
- Inventory adjustment at closing. Inventory is often priced separately from the business and added on top at closing, valued at the seller’s cost after a physical count. On a retail or distribution business, this adjustment can add tens of thousands of dollars. Confirm early whether inventory is included in the asking price or treated as an add-on.
- Transition and training costs. Most purchase agreements include a period where the seller stays to train you and introduce you to key customers and vendors. If the transition runs longer than planned, additional compensation may be owed.
A Worked Example
Take a $750,000 business bought with an SBA 7(a) loan. Once working capital and closing costs are rolled in, the total project cost might reach roughly $825,000. At the 10% minimum equity injection, you need at least $82,500 in qualifying equity. Layer on earnest money committed early, insurance premiums, licensing fees, and a three-month operating reserve for a business with $20,000 in monthly overhead, and total cash out of pocket climbs to $140,000 to $175,000, before any inventory adjustment at closing.
The same deal financed conventionally at 20% to 30% down would demand $200,000 to $300,000 in personal capital, and that is before reserves. This is why experienced buyers describe the true cash cost of buying a business as roughly 20% to 40% of the purchase price, driven by the financing path chosen and the size of the cushion kept behind the deal.