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How to Prepare a Business for Sale: An 18-Month Playbook

What to fix, document, and de-risk in the 6 to 18 months before selling, and why preparation is the cheapest way to raise your multiple.

Iuliia ShnaiUpdated August 20, 20269 min read

The gap between what owners think their business is worth and what buyers pay usually comes down to preparation. Two businesses with identical earnings can sell for meaningfully different multiples based on how transferable, documented, and de-risked they look in diligence.

Preparation compounds: most of the work that raises a multiple takes 6 to 18 months to show results, which is why the best time to start is well before you want to sell.

Clean up the financials (12 to 18 months out)

Move to accrual accounting if you are on cash basis, separate personal expenses from the business, and document every add-back you plan to claim. Buyers discount earnings they cannot verify, and lenders financing your buyer will be stricter still.

If your deal is likely to exceed a few million dollars, ask your accountant about a sell-side quality of earnings review. Finding your own problems first is dramatically cheaper than having a buyer find them at LOI.

Reduce owner dependence (12+ months out)

  • Document processes the owner currently carries in their head
  • Introduce key customers to a second point of contact
  • Delegate supplier relationships and pricing authority
  • Build a management layer that can run 30 days without you
  • Take a real vacation and record what broke
Owner dependence is the most common reason small-business deals die or retrade. Every relationship that only the owner holds is revenue the buyer will discount.

Fix transferability problems (6 to 12 months out)

Read your lease, franchise agreement, and top customer contracts for change-of-control and assignment clauses. Renegotiate now, from strength, rather than mid-deal when the counterparty knows you need their consent.

Register unregistered trademarks, get IP assignments from past contractors in writing, and resolve any handshake arrangements with employees or suppliers that a buyer's attorney would flag.

Build the diligence file (3 to 6 months out)

Assemble the full document set a buyer will request: financials, tax returns, contracts, corporate records, employee agreements, and operational documentation. Organize them the way a diligence request list is structured, so responses during the deal are instant.

Sellers who walk into their first buyer meeting with a complete, organized diligence file signal operational quality in a way no CIM narrative can match.

Assemble the deal team (3 months out)

  • A broker or M&A advisor matched to your size range
  • A transaction attorney, not just your general counsel
  • Your accountant, briefed on deal structure tax implications
  • A wealth advisor for post-sale planning

Next steps

FAQ

How long does it take to prepare a business for sale?

Meaningful preparation takes 6 to 18 months. Financial cleanup and owner-dependence reduction need at least a year to show in the numbers buyers examine.

What raises a business's sale multiple the most?

Reduced owner dependence, verified financials, low customer concentration, and transferable contracts. All four are preparation problems, not market problems.

Should I tell employees the business is for sale?

Most advisors recommend telling only key employees who will be involved in diligence, under confidentiality, and telling everyone else after closing. Early leaks unsettle staff, customers, and competitors alike.