Most owners plan to leave their business someday. Almost half expect to do it within five years. But when it comes to actually preparing for that day, most owners are flying blind, and it costs them.

Roughly 80% of business owners have no written exit plan, and half haven't done any exit planning at all, according to the Exit Planning Institute. That gap doesn't just delay the eventual sale. It shrinks what the business is worth, limits who wants to buy it, and in many cases forces owners to close the doors instead of cashing out.

Here are five mistakes that quietly cost owners the most, and how to avoid making them.

1. Waiting until they're ready to leave to start planning

Most owners treat exit planning as something to think about "closer to the time." But a business doesn't become sellable overnight. Buyers, lenders, and appraisers all look for a track record: clean financials, stable systems, a team that runs things day to day. Building that takes years, not months.

Owners who wait too long often end up choosing between a rushed, discounted sale or simply closing. Starting the planning conversation early, even five or ten years out, gives an owner options later. Starting late usually removes them.

2. Making themselves the most important part of the business

This is the one that surprises owners the most: being indispensable to your own business actively lowers its value. If every key client relationship, sales conversation, or decision runs through the owner personally, buyers see risk, not strength. Multiple valuation studies put the resulting discount at roughly 25% to 50% versus a similar business that runs without its owner in the room.

The fix isn't working less. It's documenting how the business runs, training others to own client relationships, and proving the business can perform without the owner behind every deal.

3. Assuming the kids (or a partner) will just take over

More than half of owners say they'd like to pass the business to a family member. It's an understandable instinct. But the data on family succession is sobering: according to the Small Business Administration, only about 30% of family businesses make it to the second generation, 12% to the third, and just 3% beyond that.

A family member taking over isn't a plan by itself. Without training, a real timeline, and often outside help managing the transition, "keeping it in the family" frequently becomes the reason the business doesn't survive the handoff at all.

4. Guessing what the business is worth

Owners often carry a number in their head, usually based on what they've heard other businesses sold for, what they think they need to retire on, or simple hope. That number is rarely accurate. Valuation depends on specifics: industry, customer concentration, recurring revenue, how dependent the business is on the owner, and current market multiples, all of which shift over time.

An owner who doesn't know their real number can't plan a realistic retirement, can't negotiate effectively, and is often blindsided when an offer comes in well below expectations.

5. Closing the doors instead of exploring a sale

For owners who decide it's time to move on, closing can feel like the simplest option. It's also usually the most expensive one. Only around 30% of small businesses that go to market actually sell, which means a majority of the owners who do try still end up walking away with nothing. But the owners who never explore a sale at all guarantee that outcome for themselves; equipment gets liquidated for pennies, customer relationships evaporate, and years of work convert to nothing.

Even owners who aren't sure they want to sell are usually better off having that conversation before deciding to just shut down.

None of these mistakes are permanent if they're caught early enough. The businesses that sell well, and the owners who leave on their own terms, are usually the ones who started asking these questions years before they needed the answers.

If you're weighing your options, whether that's selling, staying, or something in between, a confidential conversation costs nothing but a little time, and it beats guessing. Talking with a Transworld Business Advisors broker is confidential, free, and often the most valuable time an owner spends on their exit. Reach out here to start the conversation.

Sources: Exit Planning Institute (2023 National State of Owner Readiness Report); Capital on Tap survey via Poole Waterfield (2025); U.S. Small Business Administration; Value Builder System / Duran Advisors; Strategic Exit Advisors; Teamshares Succession Planning Statistics (2025).