How to Prepare a Business for Sale: A 12 to 24 Month Plan for Getting a Business Ready to Sell

To prepare a business for sale, give yourself 12 to 24 months and work in this order: get three clean years of financials on a consistent basis, build a documented add-back schedule you can prove, reduce the company's dependence on you personally, fix customer concentration, make sure leases and material contracts are assignable, and assemble the diligence file before you list. Owners who do this typically transact faster and defend a higher multiple, because the buyer and the lender are underwriting evidence rather than explanations.

Most owners start thinking about a sale roughly six weeks before they want to be done. The preparation that actually moves price is slower than that, and none of it is glamorous. It is bookkeeping, contracts, and delegation, done consistently for a year or two while the business keeps running.

How long before selling should I prepare my business?

Twelve to twenty-four months is the working minimum, and three years is better if you want the numbers themselves to change. The reason is arithmetic: buyers look at three years of history, so an improvement made this month only shows up fully in the trailing average two or three years from now.

Different fixes have different lead times. Cleaning up the chart of accounts takes a quarter. Reviewed financial statements take one fiscal year plus the review itself. Hiring and proving out a general manager takes twelve to eighteen months before a buyer will believe it. Diversifying away from a customer that is 45 percent of revenue can take two to three years, because you cannot fire the customer, you have to grow past them.

How do I clean up my financials before selling a business?

Get three years of profit and loss statements and balance sheets on a consistent, accrual basis, reconciled to your tax returns, with a stable chart of accounts across all three years. Then stop running personal expenses through the company at least one full year before you go to market, so the most recent year needs the fewest adjustments.

Cash-basis books are the most common problem in small deals. They distort seasonality and misstate the relationship between revenue and the cost of delivering it. Most buyers under $5M will accept cash-basis QuickBooks if the records are clean, but every step up in book quality reduces the discount a buyer applies for uncertainty. Above roughly $3M to $5M of revenue, CPA-reviewed statements start to pay for themselves.

Two other habits matter. Keep the chart of accounts stable across the three years, because a buyer who cannot compare 2024 to 2026 line by line assumes the worst about the difference. And close the books monthly, within about fifteen days. Slow answers in diligence cost momentum.

Which add-backs will a buyer actually accept?

Buyers accept add-backs that are documented, non-recurring for them, and clearly personal to you. Owner compensation above a market manager salary, personal vehicles and phones, family members on payroll who do not work in the business, above-market rent paid to an entity you own, one-time legal fees, and genuine one-off events all survive scrutiny. Everything else gets struck.

The discipline here is worth real money. At a 3.5x multiple, every $10,000 of add-back a buyer strikes costs you $35,000 of price. That argues for provable add-backs rather than aggressive ones, because a struck line damages your credibility on the adjustments that were legitimate. If your "one-time" equipment repair has appeared in three consecutive years, it is a recurring expense.

Build the schedule as a spreadsheet with one row per adjustment, per year, referencing the invoice or payroll record behind it. Our walkthrough of how to calculate SDE covers the mechanics, and SDE versus EBITDA explains which measure your buyer pool will use. Under roughly $2M of earnings you are usually selling on SDE. Above that, on EBITDA with a real manager salary deducted.

How do I reduce owner dependence before selling?

Move yourself out of every recurring operating decision and prove it stayed working for at least six months. Buyers price owner dependence directly: a business where the owner holds the customer relationships, quotes the jobs, and signs off on purchasing is worth less than an identical business with a general manager, because the buyer is buying a job plus transition risk.

List everything only you do, then sort it into delegate, document, or automate. Customer relationships are the hardest and the most valuable to fix. Introduce your second-in-command into every major account this year, so that when a buyer calls a customer during diligence, the answer is not "we deal with the owner."

Documented SOPs are the proof. Written procedures for opening, closing, quoting, hiring, purchasing, and handling the top five recurring problems tell a buyer the business runs on a system, and they survive the employee turnover that often comes with a sale process.

Why does customer concentration lower the value of a business?

Because one customer leaving can erase the buyer's return. As a working rule, buyers get uncomfortable above about 15 to 20 percent of revenue from a single customer, and above 30 percent expect a lower multiple, a larger earnout, or a deal structure that keeps you exposed until the customer proves it stayed.

SBA 7(a) lenders think the same way, and they are financing a large share of small-business acquisitions. A concentration problem can shrink your buyer pool to people paying cash, which lowers price on its own.

The fix is growth, not surgery. Grow the rest of the book so the big account shrinks as a percentage. In the meantime, make the relationship look durable: a multi-year contract with assignment language, multiple contacts inside the customer instead of one, and documented delivery history. A 35 percent customer on a three-year assignable contract reads very differently from a 35 percent customer on a handshake.

What contracts and legal items need to be cleaned up?

Every material contract needs to be current, written, and assignable to a buyer. That means your facility lease, customer and supplier agreements, equipment leases, franchise agreements, and any software or licensing arrangement the business depends on.

The lease is the one that kills deals. If you have eighteen months left with no renewal option, a buyer is underwriting the risk of relocating a business they just paid for. Renew early, get a multi-year term with options, and get consent language that does not let the landlord refuse assignment unreasonably. Do this twelve months out, because a landlord who knows you are selling has leverage.

The rest of the legal cleanup: confirm trademarks and domains are registered to the company rather than to you personally, get written IP assignments from any contractor who built your software or brand assets, resolve open litigation and tax liens, and make sure licenses and permits are in the entity's name and current.

What documents do buyers ask for in due diligence?

Three years of tax returns and financial statements, current interim statements, the normalized earnings schedule, entity and ownership documents, all leases and material contracts, an asset and inventory list, payroll and employee records, and proof of licenses and insurance. Have all of it assembled before you list.

Our full due diligence document checklist lays out how far back each item goes and what the buyer tests with it. Build the data room in the order a buyer will ask, and once you have three clean years, a defensible add-back schedule, and a customer and contract summary, it is worth an afternoon to turn those reports into a clean buyer presentation rather than emailing a folder of PDFs. Presentation does not change the earnings, but it changes how competent the business looks in the first meeting, and first impressions set the tone for every negotiation that follows.

How much working capital do I have to leave in the business?

Enough to run the business at normal volume without an immediate cash injection. In most small-business deals the seller delivers a normalized level of receivables, inventory, and payables at closing, calculated as an average of the trailing twelve months, with a true-up after the fact.

Owners routinely miss this and lose six figures at the last minute, because they assumed they were keeping all the receivables. Raise the working capital peg early, agree on the calculation method in the letter of intent rather than in the purchase agreement, and do not strip cash or delay payables in the months before closing. A buyer's accountant will spot a manufactured number.

When should I get a business valuation before selling?

Get a baseline the moment you decide a sale is on the horizon, then re-run it every six to twelve months as you work through the list. The first number tells you whether your timeline is realistic. The subsequent ones tell you whether the work is paying, which is the only way to prioritize a two-year plan.

Run the valuation estimator on your normalized earnings, look at the range from all three methods, and work through the levers that raise value before a sale. If the estimate lands well below what you need for retirement, you have found out with two years to act rather than two weeks. Our guide to valuing a business for sale covers how an estimate becomes an asking price, and how long it takes to sell a business sets expectations for what follows.

What are the most common value killers?

Messy or cash-basis books, an owner who is the business, a customer over 30 percent of revenue, a lease that expires soon and cannot be assigned, undocumented add-backs, declining revenue in the most recent twelve months, and key-employee risk where one person holds the technical knowledge.

Two more are less obvious. Deferred maintenance gets priced into the offer at replacement cost, usually higher than the repairs would have cost you. And a seller who cannot answer questions quickly signals a business that is not under control, which turns into diligence extensions, and extensions kill deals more reliably than bad numbers do.

None of these are fixed in the last quarter. That is the argument for the 12 to 24 month runway: the work is ordinary, but it only compounds if you start early.