Seller Takes Customers After Selling a Business in Turkey: Legal Remedies for the Foreign Buyer – 2026 Updated Guide

Learn how foreign buyers can protect customers, seek injunctions, claim damages, and enforce non-compete and confidentiality obligations after buying a business in Turkey.

When a seller takes customers after selling a business in Turkey, the foreign buyer may suffer serious financial and commercial losses. Customer diversion can reduce turnover, damage goodwill, weaken the value of the acquired business, and undermine the purpose of the M&A transaction.

The seller may be liable if the conduct breaches a non-compete clause, violates a non-solicitation obligation, misuses confidential information, diverts business opportunities, or constitutes unfair competition. However, customers are generally free to choose their suppliers. The buyer must therefore prove that the seller’s actions went beyond ordinary competition.

Can a Seller Take Customers After Selling a Business?

A seller is not automatically prohibited from operating in the same market after completing a business sale. The legal position depends on the transaction documents and the seller’s conduct after closing.

A foreign buyer should first review the share purchase agreement, asset purchase agreement, goodwill transfer documents, confidentiality agreement, non-compete provisions, non-solicitation clauses, and disclosure schedules.

These documents may prohibit the seller from contacting or soliciting former customers for a defined period. They may also restrict the seller from using customer lists, pricing information, trade secrets, business strategies, employee information, and commercial opportunities acquired through the sold business.

If the seller simply establishes a new business and competes independently without using protected information or violating a contractual obligation, the buyer may have limited grounds for a claim. If the seller contacts the acquired company’s customers using the customer database or falsely suggests that the new business is the continuation of the old business, the buyer’s position may be considerably stronger.

Non-Compete and Non-Solicitation Clauses

The most important protection is usually a clearly drafted post-closing restriction. A non-compete clause may prevent the seller from establishing, managing, financing, advising, or working for a competing business.

A non-solicitation clause may specifically prevent the seller from approaching:

• Customers of the acquired business;
• Customers with whom negotiations were pending before closing;
• Key employees and managers;
• Suppliers or strategic business partners;
• Customers included in a transferred goodwill portfolio.

The clause should identify the restricted activity, territory, duration, and protected persons or entities. A restriction that is vague, unlimited, or disproportionate may be challenged by the seller.

Courts generally examine whether the restriction protects a legitimate commercial interest and whether it is reasonably limited. The buyer should not assume that every broad prohibition will automatically be enforced.

When Does Customer Diversion Become Unlawful?

Customer movement alone does not necessarily prove unlawful conduct. Customers may leave because of price, service quality, personal relationships, or independent business decisions.

The buyer may have stronger legal grounds where the seller:

• Uses the company’s confidential customer database;
• Copies customer contracts or pricing records;
• Sends targeted offers to former customers;
• Encourages customers to terminate contracts unlawfully;
• Diverts contracts negotiated by the acquired company;
• Uses the former company’s name, brand, or reputation;
• Tells customers that the new company is officially connected to the sold business;
• Transfers customers to a related company;
• Uses confidential information obtained during due diligence;
• Persuades employees to provide protected commercial information.

Such conduct may give rise to contractual liability, compensation claims, unfair competition proceedings, and, in serious cases, additional legal remedies relating to trade secrets or unauthorized use of data.

Can the Foreign Buyer Request an Injunction?

A foreign buyer may consider applying for an interim injunction when the seller’s conduct is continuing and there is a risk of immediate commercial harm.

Possible requests may include preventing the seller from using confidential customer information, stopping the use of the acquired company’s brand, restricting direct solicitation of protected customers, preventing the transfer of business records, or stopping clearly defined activities covered by the non-compete clause.

The buyer generally needs to demonstrate a plausible legal right, an urgent risk of harm, and a direct relationship between the requested measure and the alleged breach. The court may also require security depending on the circumstances.

An injunction application should be precise. A request to prohibit the seller from carrying on any business may be considered excessive. A request limited to the misuse of a customer database, targeted solicitation, or use of confidential information may be more effective.

Compensation Claims Against the Seller

If the buyer proves a breach and resulting loss, compensation may be claimed. The potential loss may include lost profits, customer-related revenue, the cost of replacing lost business, expenses for investigating the breach, damage to goodwill, and a reduction in the value of the acquired company.

The buyer should distinguish between lost revenue and lost profit. A court may focus on the actual economic benefit that would reasonably have been obtained if the customers had remained with the acquired business.

The buyer should also establish causation. A decline in revenue after closing does not automatically prove that the seller caused the loss. Evidence should connect the seller’s conduct with specific customer departures, cancelled contracts, diverted orders, or lost negotiations.

If the SPA includes a contractual penalty, the buyer may seek payment in accordance with the agreement. The enforceability and amount of the penalty may depend on the wording of the contract, the seriousness of the breach, and judicial assessment.

The foreign buyer should also check whether the SPA contains a liability cap, deductible, basket, claim notification period, exclusive remedy provision, or arbitration clause.

Can the Buyer Sue the Seller’s New Company?

The seller’s new company may potentially be included in legal proceedings if it participated in the customer diversion, used confidential information, benefited from unlawful conduct, or acted together with the seller.

However, the existence of common shareholders, relatives, employees, or business connections does not automatically establish liability. The buyer should collect evidence showing the actual role of the new company.

Relevant evidence may include common directors, identical websites, similar branding, customer transfer patterns, identical proposals, employee movement, shared contact details, redirected telephone numbers, and communications between the seller and the new business.

The claim should be directed against the parties whose conduct and legal responsibility can be supported by evidence.

Evidence in Customer Diversion Disputes

Evidence should be preserved immediately. Important documents may include the SPA, due diligence reports, customer lists transferred at closing, disclosure schedules, CRM records, customer contracts, emails, WhatsApp messages, invoices, sales reports, employee resignation records, website materials, online advertisements, and customer statements.

The buyer should compare customer activity before and after closing. A sudden loss of specific customers shortly after the seller launched a competing business may be relevant, particularly if those customers were contacted by the seller.

Digital evidence should be collected lawfully and in its original form whenever possible. Cloud logs, access records, email headers, CRM activity, file downloads, and communication metadata may help establish when information was accessed or transferred.

The buyer should not unlawfully access the seller’s private accounts or systems. Improper evidence collection may create separate legal problems and weaken the case.

What If There Is No Non-Compete Clause?

The absence of a non-compete clause does not necessarily prevent legal action. The buyer may still evaluate claims based on confidentiality obligations, unfair competition, trade secret misuse, contractual warranties, fraud, misrepresentation, or diversion of opportunities belonging to the acquired business.

The seller may also be liable if the buyer was induced to complete the transaction through false statements about customer retention, market relationships, or the seller’s intention to compete after closing.

The buyer should examine the seller’s representations and warranties, management presentations, email communications, financial forecasts, customer retention statements, and documents placed in the data room.

Lawyer Fırat Fesih Kaya assists foreign buyers with post-acquisition customer diversion, non-compete breaches, unfair competition, compensation claims, and urgent interim remedies in Turkey.

2026 Practical Considerations for Foreign Buyers

In 2026, customer diversion disputes increasingly involve cloud databases, online sales platforms, remote employees, digital advertising accounts, encrypted messaging applications, and customer information transferred electronically.

Foreign buyers should ensure that future M&A agreements clearly regulate customer ownership, goodwill, digital records, customer data, post-closing communication, non-solicitation obligations, contractual penalties, escrow arrangements, and claim notification procedures.

The buyer should act quickly after discovering customer diversion. Delay may allow the seller to contact more customers, delete evidence, move assets, or make the financial loss more difficult to calculate.

A coordinated strategy may include a formal legal notice, evidence preservation, an interim injunction application, a compensation claim, and protection of the acquired company’s confidential information.

Frequently Asked Questions (FAQ)

1. Can a seller legally contact customers after selling a business in Turkey?
Customers may be contacted lawfully in some circumstances, but the seller may face liability if the contact breaches a non-solicitation clause, misuses confidential information, or constitutes unfair competition.

2. Can the foreign buyer force customers to remain with the acquired company?
Generally, no. Customers are usually free to choose their business partners. The buyer must focus on the seller’s unlawful conduct rather than the customer’s independent decision.

3. What if the SPA contains no non-compete clause?
Other remedies may still be available if the seller misuses trade secrets, breaches confidentiality, makes misleading statements, or engages in unfair competition.

4. Can the buyer obtain an injunction against the seller?
Potentially, yes. The buyer must demonstrate a plausible right, urgency, and a specific risk of continuing harm.

5. What compensation can the foreign buyer claim?
Depending on the evidence, the buyer may claim lost profits, customer losses, investigation costs, goodwill damage, reduced business value, and contractual penalties.

6. How can customer diversion be proven?
Emails, messages, CRM logs, customer statements, cancelled contracts, diverted invoices, employee records, website evidence, and sales comparisons may be important.

7. Can the seller’s new company also be sued?
Possibly, if the new company participated in the breach, used confidential information, or acted together with the seller. Liability is not automatic merely because the companies are connected.

8. Does customer loss automatically prove the seller’s liability?
No. The buyer must generally establish the seller’s breach and a causal link between that conduct and the specific customer or financial loss.

9. Can the buyer claim a contractual penalty without proving the exact financial loss?
The contract may provide a separate penalty remedy, but the validity, wording, breach, and enforceability of the clause must be examined carefully.

10. What should a foreign buyer do first?
The buyer should preserve all evidence, review the SPA and confidentiality documents, identify the customers involved, send an appropriate legal notice, and obtain Turkish legal advice before taking further action.

This article is provided for general informational purposes only and does not constitute legal advice. We recommend consulting a lawyer about your specific circumstances to avoid any loss of rights.

Expert Legal Support for Customer Diversion After a Business Sale

Expert legal support is essential to avoid losing valuable rights. By working with a lawyer experienced in Turkish M&A transactions, non-compete clauses, customer diversion, unfair competition, and compensation claims, foreign buyers can protect their commercial interests in Turkey and abroad. Fırat Fesih Kaya Law Office provides professional legal support in business sale and post-acquisition disputes.

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