A buyer walks away from an ecommerce business for reasons that have almost nothing to do with revenue. The five that kill deals most reliably are commingled finances, cash-basis books that cannot produce a defensible margin, no product-level profitability, undocumented supplier relationships, and an operation that only works because the owner is in it. Each one is fixable. None of them is fixable in the ninety days before a sale, which is when most sellers discover them.
Ecommerce is a large enough category now that acquirers have templates for this. The Census Bureau put US retail e-commerce at $340.2 billion in the second quarter of 2026, 17.1 percent of total retail sales, in its Quarterly Retail E-Commerce Sales release of August 18, 2026. Buyers looking at that category have seen enough deals to know exactly where the bodies are buried.
1. Personal and business money share an account
The Amazon disbursement lands in the account that also pays the mortgage. Inventory goes on a personal card because it had the available limit that week. A family member draws money that is recorded as neither payroll nor distribution.
The problem is not the commingling itself, which is common and usually innocent. The problem is that untangling it requires the buyer to trust the seller’s explanation of which transactions were business. A diligence team will not do that. They will either discount the earnings by whatever cannot be substantiated, or they will price the uncertainty into the multiple, and the seller will never see the line item that cost them.
Separate accounts from the first dollar. If they are already tangled, separate them now and accept that the clean period starts today, not retroactively.
2. The books are cash basis and the business is not
Cash accounting records money when it moves. An inventory-carrying ecommerce business has a fundamental timing problem that cash basis cannot represent: you pay for goods months before you sell them, marketplaces hold your funds after the sale, and advertising spend lands in a different period from the revenue it generated.
Run cash basis and a strong month looks like a weak one whenever you place a container order. Run it long enough and the trend line becomes noise. Buyers model on accrual because accrual is what shows whether the business earns money. A seller who arrives with cash-basis books is asking the buyer to do the conversion, and the buyer will do it conservatively.
This is also where the inventory number gets uncomfortable. If closing inventory has been a plug figure adjusted once a year to make the balance sheet work, every monthly gross margin in the history is approximate.
3. Nobody can say which products make money
A buyer’s first real question after revenue is concentration: which SKUs produce the profit, and how durable are they. A seller who can only answer at the account level is describing a black box.
Getting to product-level truth means allocating landed cost, marketplace fees, fulfillment, storage, returns, and advertising down to the individual SKU. Most sellers do part of this in a spreadsheet and abandon it when the catalog grows. Tools built for the job include Sellerboard, A2X, and ConnectBooks, which approach the allocation from different directions, and several sellers run the analysis in a warehouse alongside their accounting system instead. The method matters much less than having one that produces the same number twice.
What makes this a deal issue rather than a management issue: if the top three SKUs carry eighty percent of profit, the buyer needs to know that before closing. Finding it afterward is how earnouts get disputed.
4. The supplier relationship lives in someone’s inbox
Many profitable sellers have no written agreement with their primary manufacturer. Pricing was negotiated over years of messages, exclusivity is understood rather than documented, and the relationship is personal to the founder.
From a buyer’s side, that is an asset that may not transfer. If the factory’s loyalty is to the person leaving, the cost structure the buyer is paying for could change in the first year. The same applies to a single 3PL with no contract, a freight forwarder relationship built on one broker, or a private-label formulation that nobody can prove ownership of.
Written supply agreements, documented pricing tiers, and clear intellectual property assignment are unglamorous work that directly changes what a business is worth. Start them before you need them. Federal guidance on the basics of business contracts and structure is collected in the SBA business guide, though anything material should go past an attorney.
5. The business is the owner
The last one is the hardest to see from inside. If purchasing decisions, listing changes, ad bid adjustments, supplier calls, and customer escalations all route through one person, the business does not have processes. It has a person with habits.
Buyers price that directly. They will ask how many hours a week the owner works, what happens during a two-week absence, and whether anyone else has ever placed a purchase order. Vague answers lengthen the earnout and lower the cash at close.
The fix takes a year and looks like documentation: written reorder rules with actual thresholds, a documented listing change process, a named second person on the supplier relationship, and a close checklist that someone other than the founder can execute. Business survival data from the Bureau of Labor Statistics Business Employment Dynamics program consistently shows the steepest attrition in the early years, and owner dependence is part of why. It is also why the businesses that survive long enough to sell often still cannot.
What to do first
If you plan to sell in the next three years, fix them in this order: separate the accounts, move to accrual, then build SKU-level reporting. Those three are prerequisites for the other two, because you cannot document a process you cannot measure and you cannot negotiate supplier terms without knowing what each product actually earns.
None of this is deal preparation in the usual sense. It is running the business with numbers you can defend, which happens to be what a buyer is paying for.
