Many business owners assume that when they're ready to retire, they can simply put their business on the market and find a buyer. In reality, selling a business is rarely that simple.

According to M&A advisor and business broker Lamar Rutherford , the biggest challenge isn't a lack of buyers. It's a lack of businesses that are truly ready to be sold.

"Business owners don't necessarily see their business through the lens of a buyer," Rutherford told me. "Buyers are trying to buy something that they know is going to continue and that they can run and improve."

As millions of business owners approach retirement, understanding what buyers want could mean the difference between a successful exit and a business that never sells.

The Coming Wave of Business Transitions

America is entering what many experts call the "Silver Tsunami" as aging business owners prepare to exit their companies.

According to research from Harvard Business School , more than half of privately held businesses in the United States are owned by individuals over the age of 55, creating a significant wave of ownership transitions in the coming years.

At the same time, many owners remain unprepared. A Gallup survey found that roughly half of small business owners either have no succession plan or expect to simply close their business rather than transfer ownership.

This disconnect creates a growing opportunity for buyers while exposing weaknesses in businesses that haven't been built for transferability.

Owner Dependency Can Destroy Value

One of the most common deal killers Rutherford sees is owner dependency. "If you're going to walk away and the business is going to walk away without you, it can be the value of the company," she said.

Many founders spend decades building relationships, solving problems and making key decisions. Over time, they become the operating system of the business. The problem is that buyers don't want to purchase a company that cannot function without its owner.

Businesses that lack documented processes, management depth and delegated decision-making create risk for buyers. That risk often translates into lower valuations or failed transactions altogether.

Rutherford recommends that owners test their business's independence long before a sale. "We tell them to take a long vacation," he said. "If their business can run without them there for a long period of time, that shows that it's not totally dependent on them."

Recurring Revenue Gets Buyers' Attention

Not all revenue is viewed equally by buyers. Rutherford says recurring revenue remains one of the most attractive characteristics in today's M&A market because it provides predictability and reduces risk.

Membership-based businesses and subscription models often attract strong buyer interest because they generate ongoing cash flow. Even businesses in traditionally transactional industries are finding ways to create recurring revenue through service agreements, memberships and maintenance plans.

For buyers evaluating future performance, predictable revenue streams are often worth more than one-time sales.

Clean Financials Build Confidence

Strong financial performance alone isn’t enough to attract buyers. Rutherford recalls reviewing a fast-growing company whose revenue had doubled from $8 million to $16 million. While the growth was impressive, the financial records raised immediate concerns. One entry for nearly $400,000 was labeled simply as "fraud." Another large expense was described as "ask my accountant."

"Those things are usually not problems, but clean it up," Rutherford said.

Buyers, lenders and investors expect financial statements that are accurate, organized and easily explained. Unclear transactions create doubt, and doubt creates risk.

Customer Concentration and Other Hidden Risks

Customer concentration is another issue that frequently causes buyers to hesitate. When a single customer represents more than 20% of revenue, buyers worry about what happens if that relationship disappears after the acquisition.

Other risks include key employee dependency, contracts that cannot easily transfer to a new owner and financial information that lenders cannot verify. These issues may seem manageable to an owner who has lived with them for years. To a buyer, they can be reasons to walk away.

The businesses that command premium valuations aren't always the largest. They're the ones that can operate, grow and generate cash flow without relying on the founder.

As millions of business owners prepare for retirement, buyers are still actively looking for acquisition opportunities. The question isn't whether buyers exist. It's whether the business has been built to survive, and thrive, without its owner.

Melissa Houston, CPA, CEPA , is a Business Value & Financial Strategy Advisor and a Forbes.com contributor who writes about building profitable, sellable businesses.

With more than 25 years of experience in finance and accounting, she helps entrepreneurs increase profit, improve cash flow, and build companies that create long-term wealth. Her work focuses on financial leadership, profit optimization, and increasing business valuation through strategic decision-making.

Melissa is a Certified Exit Planning Advisor (CEPA), specializing in helping founders understand and close the gap between their current business value and its full potential. She works with business owners to strengthen financial performance, reduce risk, and position their companies for successful exits.

A published author of Cash Confident: An Entrepreneur’s Guide to Creating a Profitable Business , Melissa is a recognized voice in financial strategy and entrepreneurial wealth-building.

The opinions expressed in this article are not intended to replace professional accounting or tax advice.