Due diligence is painful almost entirely because of decisions made two or three years earlier. A buyer asks for monthly profit and loss statements by channel, and the seller discovers those numbers were never produced. The six habits below cost very little to maintain while you are operating, and they are the difference between a four week diligence process and a four month one.
None of this assumes you are selling soon. The businesses that clear diligence quickly are the ones that were run this way before anyone made an offer.
1. Close every month, and close it on a schedule
A monthly close means: all marketplace settlements recorded, inventory adjusted, accruals booked, bank and card accounts reconciled, and the period locked so nobody edits it later. Pick a date, the tenth or the fifteenth, and hold it.
The alternative is what most sellers do, which is categorize transactions continuously and never formally close anything. That produces books where a figure you pulled in March differs from the same figure pulled in August, because someone recategorized a transaction in between. A buyer who spots that stops trusting every other number you have given them, and they are right to.
Locking closed periods also gives you a real audit trail. When a diligence question comes back about a specific month, you can answer it from a fixed set of records rather than from whatever the ledger says today.
2. Record marketplace settlements at their components, never at the deposit
This is the single largest source of restated ecommerce financials. A marketplace deposit is a net number. Gross sales, referral fees, fulfillment fees, storage, advertising, refunds and reserve adjustments have all been netted before the money lands.
Book the deposit as revenue and you understate both revenue and expenses by the same amount. Gross margin becomes meaningless, and every ratio built on it is wrong. Amazon publishes its fee categories in the Seller Central fee reference, and the list is longer than most sellers track.
A buyer’s analyst will rebuild your revenue from settlement reports regardless. If your books already match that rebuild, diligence moves fast. If they do not, you spend weeks explaining a gap that never needed to exist.
3. Carry inventory as an asset, on the accrual basis
Cash basis treatment of inventory, expensing a purchase order in the month you paid for it, makes profit swing wildly with purchasing timing. A month with a large container payment shows a loss. The month you sell that container shows an inflated profit. Neither reflects what the business earned.
Inventory belongs on the balance sheet at landed cost until the unit sells, at which point it moves to cost of goods sold. Landed cost means the supplier invoice plus freight, duty, tariffs and inbound handling, not just the invoice.
Software in this category automates the movement rather than leaving it as a quarterly manual entry. A2X, Link My Books and ConnectBooks all handle some version of cost of goods sold posting, with different approaches to how inventory is valued and how granular the reporting goes. Whichever you use, the requirement is the same: the balance sheet should show what you are actually holding.
4. Keep a SKU-level margin record, not just a company-level one
Buyers price on the durability of earnings, and durability is a question about product mix. A business earning most of its profit from three SKUs is a different asset from one earning the same profit across sixty, and the diligence conversation goes differently in each case.
You need, per SKU: units sold, revenue, landed cost, channel fees attributable to it, returns, and advertising allocated to it. Monthly. The businesses that cannot produce this end up asserting their margins rather than demonstrating them, which invites a lower offer or an earnout.
Start it now even if it is imperfect. Two years of approximate SKU history is worth more in diligence than a precise system you turned on last month.
5. Separate the owner’s finances from the company’s, completely
Personal expenses run through the business are the most common diligence friction point and the most avoidable. Every one of them has to be identified, quantified and added back, and every add-back is a line a buyer can dispute.
Run one business bank account and one business card. Pay yourself by transfer. If something genuinely mixed happens, a vehicle used for both, record it properly at the time with a note explaining the split.
The cost of not doing this is not just the argument over the add-backs. It is that a buyer who finds a dozen personal charges starts wondering what else in the books was treated casually.
6. Write down the things the ledger does not capture
Keep a running document covering the facts a buyer will ask about that no accounting system stores. Supplier terms and whether they are contractual or informal. Which SKUs are exclusive and under what agreement. Concentration risk in suppliers and channels. Any past account suspension and how it resolved. Who actually knows how to run the ad accounts.
This takes an hour a quarter and it prevents the worst diligence outcome, which is a material fact surfacing late. A risk disclosed early gets priced. The same risk discovered by a buyer’s advisor in week six gets treated as concealment, and it changes the tone of everything that follows.
What these six have in common
Every one of them is a habit rather than a project. None requires a finance hire, and none takes more than a few hours a month once established.
The payoff arrives long before any exit. Books maintained this way tell you which products to reorder, when you can afford to, and what the business actually earns, which is information worth having whether or not anyone ever makes an offer. Survival data from the Bureau of Labor Statistics Business Employment Dynamics program shows roughly two thirds of new establishments still operating after two years and closer to 44 percent after four, and the operators who make it that far are rarely the ones guessing at their own margins.
