Most business owners who decide to sell start preparing too late. They get a number in their head, call a broker, and discover that the business as currently structured will not support that valuation. The fix is almost always the same: they needed 12 to 18 months to clean things up. The data backs this up. Businesses that enter the market after deliberate preparation consistently sell for 20 to 30 percent more than businesses that are rushed to market, and they close faster too.

This guide is a month-by-month checklist for getting your business ready to sell. Whether you are targeting a sale in 12 months or just want to build a business that could sell on your terms at any time, these are the right steps in the right order.

Months 1 to 3: Get Your Baseline and Clean Up the Financials

Get a Baseline Valuation

Before you can improve your valuation, you need to know where you stand. In the first month, calculate your current Seller’s Discretionary Earnings (SDE) and apply a realistic multiple for your industry. If you are not sure how to do this, our guide on how to value a small business walks through the full framework. The goal is not a precise number at this stage. It is a clear-eyed baseline so you can identify the gaps between where you are and where you want to be.

Identify Value Gaps

A value gap is anything that would cause a buyer to discount their offer or walk away entirely. Common gaps include: revenue that is declining or inconsistent; a customer base where one or two clients represent too much of total revenue; financials that mix personal and business expenses; operations that depend entirely on the owner. Write them down. You cannot fix what you have not identified.

Start Cleaning Up the Financials

Three years of clean, accurate financial statements are the foundation of any business sale. This means profit and loss statements, balance sheets, and tax returns that are consistent, reconciled, and easy for a buyer to read. If your bookkeeping has been inconsistent or your personal expenses have been running through the business, now is the time to untangle them. Work with a CPA to recast your financials in a buyer-friendly format. Buyers and their accountants will review every line item during due diligence.

Months 4 to 6: Reduce Owner Dependence

Owner dependence is one of the most common reasons business sales fail or close at a discount. If a buyer believes the business will struggle without you personally running it, they will either pass or price that risk into their offer. Your goal in this phase is to make yourself replaceable.

Document Your SOPs

Standard Operating Procedures turn institutional knowledge into transferable systems. Document every repeatable process in the business: how you onboard a new client, how you handle fulfillment, how you run your weekly team meeting, how you manage vendor relationships. Use written guides, Loom videos, or both. The more documented your operations, the less risk a buyer associates with the transition.

Cross-Train Your Staff

If key processes live in the head of one person (including you), that is a single point of failure. Cross-train your team so that at least two people can handle every critical function. Then, aim to step away from day-to-day operations for at least two consecutive weeks before the sale process begins. If the business runs smoothly without you, you can demonstrate that to buyers with confidence.

Address Customer Concentration

If any single client represents more than 20% of your revenue, that is a concentration risk that buyers will flag immediately. The fix is simple but takes time: grow other accounts so that the large client represents a smaller share of the total. Consider whether you can add new revenue streams, expand into adjacent markets, or acquire smaller clients to diversify the base.

Months 7 to 9: Clean Up Contracts and Legal Structure

The legal health of your business is just as important as the financial health during a sale process. Buyers will review every contract, agreement, and piece of intellectual property. Problems discovered during due diligence kill deals or force price reductions at the worst possible moment.

Make Sure Client Contracts Are Assignable

Review every client agreement with an attorney. If a contract requires the client’s consent before it can be assigned to a new owner, that client could exit at the sale. Update your standard client agreements to include assignment provisions that allow for transfer without individual client consent, or at minimum with a simple notification rather than approval requirement.

Verify Supplier and Vendor Contracts Are Transferable

The same logic applies to the vendor side. Any critical supplier contracts, software licenses, or service agreements that cannot be transferred to a new owner represent a gap in the business. Work with your attorney to either add assignment language or negotiate renewals that include it.

Confirm IP Is Owned by the LLC

Intellectual property owned personally by the founder rather than by the LLC is a significant legal problem in a business sale. This includes trademarks, copyrights, domain names, proprietary software, and trade secrets. Transfer all IP assets into the LLC now, with proper documentation, so there is no ambiguity about what is being sold.

Months 10 to 11: Prepare Your Marketing Materials

Build the CIM

The Confidential Information Memorandum (CIM) is the document that introduces your business to prospective buyers. It is typically 20 to 40 pages and covers: business overview and history, products or services offered, financial performance for the last three years, market position and competitive advantages, team and organizational structure, growth opportunities, and asking price or valuation rationale.

The CIM is the first detailed look a buyer gets at your business. A well-crafted CIM positions your business favorably and answers the questions that would otherwise slow down the process. Work with a business broker or M&A advisor on this document. Their experience with what buyers look for in your industry is invaluable.

Work with a Broker or M&A Advisor

For most businesses selling for under million, a business broker is the right partner. For larger businesses, an M&A advisor adds more value. Either way, engaging a professional at this stage gives you access to their buyer network, their process expertise, and their ability to run a competitive sale process that maximizes your price. See the SBA’s resources on selling a business for additional guidance on finding and working with advisors. You can also review our guide on how to sell a business for a detailed look at the full sale process.

Month 12: Go to Market

By month 12, your financials are clean, your operations are documented, your legal structure is tight, and your CIM is ready. Now your broker lists the business, begins reaching out to qualified buyers, and manages the inbound process. Your job shifts to running the business as if nothing is happening (because buyers pay more for businesses that are performing well during the sale process) while working through confidential buyer conversations on the side.

The typical sale process from listing to close takes 6 to 12 months. Some deals move faster; complex transactions take longer. The preparation you have done in the preceding year is what allows you to move with confidence, field multiple offers, and negotiate from a position of strength rather than desperation.

The businesses that sell for top dollar are not necessarily the most profitable ones. They are the ones that are the most prepared. Start the checklist now, even if you have no intention of selling for years. Building a business that could be sold is the same as building a business that runs well. Both are worth doing.