Your best customer has been with you for 12 years, and you have never needed a formal agreement because the relationship just works. They call, you deliver, they pay. But when a buyer’s advisor pulls your customer list during due diligence, they will inevitably ask for the paperwork backing up those revenue streams before finalizing any contract for sale of business. That single question changes the entire conversation. A business with documented, assignable customer agreements presents entirely differently to a buyer than one running on handshake deals, and that difference directly impacts your final sale multiple.
Discovering that relationships you spent years building carry less weight without paperwork is one of the hardest realizations in exit preparation. You know these customers will stay, but proving it to a stranger with a checkbook is a different problem. Fortunately, contract quality is one of the most fixable factors in exit preparation. This article shows you what buyers look for in your customer agreements, what happens when they find informal arrangements, and how to assess your own contract quality today.
What Buyers Check about Your Customer Agreements
During due diligence, buyers evaluate every customer relationship for one question: will this revenue transfer to a new owner?
Written agreements with assignability clauses (language allowing the contract to transfer to a new owner) provide a clear answer. The agreement survives the sale. The customer remains bound by its terms. The buyer inherits a documented relationship.
Handshake deals provide no answer. The customer has no legal obligation to continue working with a new owner. The revenue depends entirely on goodwill that may or may not transfer.
According to legal analysis of M&A transactions, contracts without assignability clauses can trigger termination rights, revenue disruption, and depressed transaction valuation when the business changes hands. In asset sales, which are the more common structure in small business transactions, each contract must be transferred individually. Without assignability language, the buyer needs each customer’s consent.
In the Exit Readiness Score framework, Contract and Terms Quality (A3.5) carries 10% of the Customer and Revenue Quality category, which itself accounts for 15% of the total score. The weight reflects a practical reality: contract quality is fixable. Unlike customer concentration, which takes years to change, formalizing agreements can happen in months.
How Contract Quality Affects Your Score
The Exit Readiness Score rates contract quality on a 1-3-5 scale.
| Score | Description | Buyer perception |
|---|---|---|
| 5 | Written, assignable agreements with clear terms for key accounts. | Low transfer risk. Revenue is documented and transferable. |
| 3 | Mix of written and informal agreements. | Moderate transfer risk. Some revenue verifiable, some depends on goodwill. |
| 1 | Most revenue based on handshake or one-off projects. | High transfer risk. Revenue cannot be verified as transferable. |
The gap between Score 1 and Score 5 is not abstract. SBA (Small Business Administration) 7(a) lenders examine legal contracts and customer base during underwriting, a process that typically takes 30 to 90 days. Verbal customer arrangements create documentation gaps that can delay or block the buyer’s financing.
Tom’s Contract Quality: Zero Assignable Agreements
Tom owns Comfort Zone HVAC. His business generates steady revenue from residential maintenance and commercial service contracts. He has been in business for years. His customers trust him.
But Tom scored 1 out of 5 on contract quality. Here is what a buyer’s advisor found:
Residential customers: no contracts. Customer calls, Tom’s team quotes, customer approves verbally or by text. No written terms beyond the quote itself.
Commercial customers: written proposals for individual jobs. These proposals document one project, not an ongoing relationship.
Assignability clauses: zero. Not one customer agreement includes language allowing transfer to a new owner.
Tom’s commercial proposals are better than nothing. They prove the work happened. But they do not prove the relationship will continue. A buyer looking at Tom’s customer list sees revenue that depends entirely on Tom’s reputation and personal relationships.
Your Contract Quality Scorecard: 5 Questions
Answer each question based on your current documentation, not what you plan to do.
| # | Question | Yes | No |
|---|---|---|---|
| 1 | Do your top 10 customers by revenue have written service agreements (not just proposals or invoices)? | ||
| 2 | Do those agreements include assignability language allowing transfer to a successor or purchaser? | ||
| 3 | Could you hand a buyer a folder of signed customer agreements covering at least 50% of your annual revenue? | ||
| 4 | Do your agreements specify terms, pricing structure, and renewal or cancellation provisions? | ||
| 5 | If a customer disputed their arrangement with you, would you have a signed document to reference? |
Score 4-5 (Strong): Your customer agreements are documented and transferable. Buyers see low contract risk. This protects your multiple.
Score 2-3 (Moderate): You have some documentation but gaps remain. Buyers will flag the gaps during due diligence and may request you formalize agreements before closing.
Score 0-1 (Weak): Most of your revenue runs on informal arrangements. Buyers see high transfer risk. Some will walk away. Others will apply a discount.
These bands correspond to the scoring levels in the Exit Readiness Score framework.
Three Steps to Formalize Your Customer Agreements before Listing
These steps address the most common contract quality gaps. Tom completed all three over 15 months and moved his score from 1 to 3.
Hire an attorney to draft three agreement templates. You need a residential service agreement, a commercial service agreement, and a maintenance or subscription agreement if applicable. Each template must include assignability language: “This agreement may be assigned by Company to any successor, affiliate, or purchaser of Company’s business or assets.” Tom paid $3,500 for his three templates.
Start with your top 10 commercial accounts. These are the accounts that carry the most revenue and the most due diligence scrutiny. Introduce the agreement as a formalization of your existing relationship. Most customers sign without objection.
Roll out to all new customers immediately. Every new customer from today forward signs a written agreement. Within 12 months, a meaningful portion of your revenue will have documented terms.
Your next step: pull your top 10 customer list by revenue. Next to each name, write whether you have a signed agreement, a proposal on file, or nothing at all. That list is your starting point.
The Exit Readiness Score evaluates 35 factors across systems, customers, financials, team, and owner readiness. Contract quality is one of the factors within the Customer and Revenue Quality subcategory.
Frequently Asked Questions
Are handshake deals legally binding?
A verbal agreement can be legally binding, but it is hard to prove and even harder to transfer. In a business sale, what matters is not just whether the deal is enforceable but whether a buyer can verify it and inherit it, and handshake deals fail that test.
What is an assignability clause?
An assignability clause is contract language that allows the agreement to transfer to a new owner, such as a successor, affiliate, or purchaser of the business. Without it, a buyer may need each customer’s individual consent for the contract to carry over.
Do customer contracts transfer when a business is sold?
It depends on the contract and the deal structure. In an asset sale, the more common structure for small businesses, each contract transfers individually, and contracts without assignability language can give customers termination rights.
What is the difference between an asset sale and a stock sale?
In an asset sale, the buyer purchases specific assets, and contracts must be transferred individually. In a stock sale, the buyer purchases the legal entity and its contracts come with it. Most small business deals are asset sales, which makes assignability clauses important.
How do I formalize informal customer agreements before selling?
Have an attorney draft service agreement templates that include assignability language, then sign your highest-revenue accounts first and require a written agreement from every new customer going forward. This is generally achievable in months, not years.
References
Live Oak Bank. (n.d.). How to finance your business acquisition with an SBA 7(a) loan. https://resources.liveoak.bank/blog/financing-your-business-acquisition-with-sba-7a-loan
OlenderFeldman LLP. (n.d.). Anti-assignment clauses in commercial contracts and their impact on sale transactions. https://olenderfeldman.com/anti-assignment-clauses-in-commercial-contracts-and-their-impact-on-sale-transactions/
