Hidden Tax Liabilities After Buying a Turkish Company: Who Is Responsible? (2026 Updated Guide)

Hidden tax liabilities discovered after buying a Turkish company can create major risks for foreign investors. Learn who may be responsible, how share and asset deals differ, and what buyers can do after a tax assessment.

Buying a Turkish company does not necessarily eliminate tax risks created before the acquisition. A foreign investor may complete a transaction, take control of the target and only later discover unpaid taxes, incorrect tax returns, withholding problems, VAT exposure, payroll liabilities, transfer-pricing issues or liabilities arising from an ongoing tax audit. The central question is usually whether the buyer purchased shares in the existing company or acquired selected assets and business operations. In a share acquisition, the legal entity generally continues to exist with its historical liabilities, meaning an undisclosed pre-closing tax exposure can remain a liability of the target company even though its shareholders have changed. The buyer must then consider the company’s liability toward the tax administration separately from contractual claims against the seller.

Why Can Tax Liabilities Appear After an Acquisition?

Tax exposure may remain undiscovered at closing because a tax audit has not yet started, an existing audit has not been completed, returns contain errors that have not been detected, accounting records are incomplete or the seller failed to disclose a known issue.

The financial impact can include the underlying tax, penalties, interest or other public receivables depending on the particular assessment.

Share Purchase and Asset Purchase Must Be Distinguished

This is one of the most important distinctions in acquisition tax risk.

In a share purchase, the investor acquires shares in an existing legal entity. The company itself generally remains the same taxpayer before and after closing.

A change in ownership therefore does not normally erase the company’s historical tax obligations.

An asset acquisition can present a different liability structure, but it should not automatically be assumed that buying assets eliminates every public-law risk. The transaction structure, transferred business and applicable tax and collection rules must be reviewed separately.

The Tax Debt Belongs to the Company

Where an assessment concerns the target company’s historical tax obligations, the starting point is generally the company’s own liability.

The fact that the current shareholder did not own the company when the taxable event occurred does not automatically prevent the tax administration from pursuing the company itself.

This is why historical tax due diligence is crucial in a share acquisition.

Can the New Shareholder Become Personally Liable?

This question requires a separate analysis from the company’s liability.

Personal exposure can depend on matters such as the company’s legal form, the person’s capacity as shareholder or legal representative, the relevant public receivable, the period concerned and the statutory conditions for pursuing persons other than the company.

A buyer should therefore not assume either that shareholders are always personally liable or that corporate personality always prevents personal exposure.

Limited Liability Companies Require Particular Attention

Acquiring an interest in a limited liability company can raise specific public-debt collection questions concerning shareholders.

The acquisition agreement should therefore be preceded by a review of historical public receivables, share-transfer dates and the potential statutory consequences attached to shareholder status.

Joint-Stock Companies Can Present a Different Position

The rules affecting shareholders of a joint-stock company are not identical to those governing shareholders of a limited liability company.

However, directors and legal representatives may present separate liability issues.

The buyer should therefore analyze shareholder liability and management liability independently.

Directors and Legal Representatives May Face Separate Exposure

A foreign investor frequently changes the target company’s management immediately after closing. New directors may then receive notices concerning historical liabilities.

Whether a particular manager can personally be pursued requires analysis of the relevant period, representative capacity and statutory conditions. Merely being the current manager should not automatically be treated as equivalent to personal responsibility for every historical tax debt.

What If the Tax Audit Started After Closing?

The date the audit begins is not necessarily the same as the period giving rise to the underlying tax exposure.

For example, an audit beginning after acquisition may examine transactions from years before closing.

The buyer should therefore identify the tax period, not merely the date of the audit report or assessment.

What If the Audit Was Already Pending Before the Sale?

A pending tax audit is a major due-diligence and disclosure issue.

The buyer should examine whether the seller disclosed the audit, information requests, inspection notices, preliminary findings or communications with tax authorities.

Failure to disclose a material known investigation may strengthen contractual claims against the seller depending on the transaction documents.

Review the Tax Assessment Immediately

When a post-closing tax assessment arrives, determine the tax type, taxable period, principal amount, penalty, interest consequences, notification date and available administrative or judicial remedies.

Do not allow an indemnity dispute with the seller to cause the company to miss a tax litigation deadline.

Tax Defense and Seller Recovery Are Separate Tracks

This distinction is critical.

The target company may need to challenge the tax assessment before the competent authority or tax court, while the buyer simultaneously pursues contractual rights against the seller.

A strong claim against the seller does not automatically suspend the tax administration’s proceedings.

Review the Share Purchase Agreement

The SPA should be examined immediately for provisions concerning taxes, pre-closing liabilities, representations and warranties, indemnities, disclosure, conduct of tax disputes, notice requirements and limitation periods.

The exact drafting can determine whether the economic burden ultimately remains with the buyer or can be recovered from the seller.

Tax Warranties Can Be Crucial

Typical acquisition documentation may contain representations concerning filed tax returns, payment of taxes, pending audits, withholding obligations, tax disputes and accuracy of financial records.

Compare the discovered liability with the exact wording of those representations.

Tax Indemnities May Provide Stronger Protection

A transaction may include a specific tax indemnity allocating pre-closing tax exposure to the seller.

The scope, exclusions, thresholds, caps and claim procedure should be reviewed carefully.

Do not assume that a general warranty and a specific tax indemnity provide identical protection.

Observe Contractual Notice Requirements

An otherwise strong indemnity claim can become complicated if the buyer fails to follow contractual notification procedures.

Check how notice must be delivered, what information it must contain and whether a specific period applies.

Who Controls the Tax Litigation?

The SPA may specify whether the buyer, target or seller controls the defense of a historical tax assessment.

This issue can become contentious because the seller may bear the economic risk while the buyer controls the company.

Follow the contractual procedure while protecting mandatory tax deadlines.

Due Diligence Does Not Necessarily Eliminate Seller Liability

The fact that the buyer conducted tax due diligence does not automatically resolve whether the seller remains liable under warranties or indemnities.

The answer depends on the contract, disclosures, buyer knowledge provisions and the nature of the undisclosed issue.

Review the Disclosure Letter

Determine whether the seller specifically disclosed the tax exposure.

A generic statement that tax authorities may conduct audits is different from disclosure of a known assessment, audit or material tax position.

Financial Statements Should Be Revisited

Compare the newly discovered liability with historical financial statements and closing accounts.

Was an appropriate provision recorded? Was the risk mentioned in notes? Did the liability affect working capital, debt or purchase-price calculations?

These questions can produce claims beyond the tax indemnity itself.

VAT Exposure Can Be Significant

Historical VAT problems can arise from unsupported deductions, incorrect invoices, transaction characterization, exemptions or documentation deficiencies.

The underlying transaction should be reconstructed rather than simply accepting the amount stated in the assessment.

Withholding Tax Risks Should Be Reviewed

Payments to employees, service providers, shareholders, foreign entities and other parties can generate withholding issues depending on the circumstances.

Historical contracts and payment records may therefore become central evidence.

Payroll and Employment Taxes May Be Hidden

A company acquisition can also reveal historical payroll and social-security-related liabilities.

These should be analyzed separately from corporate income tax exposure because different authorities, procedures and liability rules may apply.

Related-Party Transactions Are a Major Risk Area

If the target historically traded with shareholders, group companies or related foreign entities, review transfer pricing and other related-party tax issues.

Intercompany loans, management fees, royalties, services and product pricing can create significant post-closing exposure.

Foreign Service Payments Require Careful Review

Payments abroad for consulting, software, licensing, management or other services can involve several tax questions.

Contracts, invoices, proof of services, payment records and applicable treaty positions should be preserved.

Undocumented Shareholder Payments Can Create Problems

Historical transfers between the company and former shareholders may be characterized differently from how they appear in the accounting records.

Large unexplained transfers should be investigated during both due diligence and post-closing tax defense.

Can the Buyer Claim Purchase Price Adjustment?

Potentially, depending on the acquisition agreement.

A hidden tax liability may affect completion accounts, net debt, working capital or another purchase-price mechanism. The buyer should therefore examine both indemnification and price-adjustment provisions.

Escrow and Holdback Funds Should Be Checked

If part of the purchase price remains in escrow or subject to holdback, determine whether the tax claim qualifies for recourse against those funds.

Procedural deadlines under the escrow arrangement should be protected.

Warranty and Indemnity Insurance May Be Relevant

If the transaction included relevant insurance, review the policy promptly.

Notification periods, exclusions, known-risk provisions and tax-specific coverage can affect recovery.

Can the Buyer Sue the Seller?

Potentially. Depending on the transaction documents and facts, claims may arise from contractual warranties, indemnities, inaccurate disclosures or other contractual breaches.

The governing law and dispute-resolution clause should be checked before commencing proceedings.

Fraudulent Concealment Creates a More Serious Situation

If evidence suggests that the seller deliberately concealed an existing tax investigation, falsified records or knowingly provided inaccurate information, the dispute may extend beyond an ordinary warranty claim.

Preserve emails, due-diligence responses, data-room records and management representations.

Preserve the Virtual Data Room

After closing, buyers should retain a complete copy of the acquisition data room where legally and contractually permitted.

The documents available to the buyer before closing can become critical in determining whether the tax issue was disclosed.

Preserve Due-Diligence Questions and Answers

Written Q&A exchanges can be especially important.

If the buyer specifically asked whether tax audits or unpaid liabilities existed and received an inaccurate answer, that evidence may materially affect the contractual dispute.

Review Tax Limitation Periods Separately

Historical liabilities should be analyzed by tax type and period.

Do not assume that every old transaction is automatically outside assessment or collection periods merely because several years have passed. The applicable limitation rules and events potentially affecting those periods must be reviewed specifically.

What If the Company Has Already Paid the Tax?

Payment does not necessarily answer whether the assessment could have been challenged or whether the seller must reimburse the company or buyer.

Preserve payment records and determine immediately whether any available objection, litigation or repayment route remains open.

What If Company Bank Accounts Are Frozen?

Historical public debts can create urgent enforcement problems.

If bank accounts or other company assets are subject to collection measures, the legality of the underlying debt, notification process and enforcement action should be reviewed immediately.

Emergency judicial remedies may need to be considered depending on the measure.

Can the Seller Be Required to Fund the Defense?

Possibly, if the SPA or tax covenant contains provisions requiring the seller to bear professional costs associated with pre-closing tax liabilities.

Check whether prior consent is required before appointing advisers or settling the dispute.

Do Not Settle With the Tax Authority Without Checking the SPA

A settlement or admission can affect the buyer’s ability to recover from the seller.

Before accepting an administrative resolution, determine whether the transaction documents require seller consultation or consent.

Do Not Let the Seller Control the Case at the Company’s Expense

Conversely, the current owner must protect the target company’s interests.

If the seller has contractual participation rights, they should be respected without allowing mandatory deadlines or the company’s ongoing operations to be endangered.

Conduct a Post-Acquisition Tax Risk Review

Once one hidden liability appears, the buyer should determine whether it is isolated or indicates a broader historical compliance problem.

Review similar transactions, tax periods, group-company payments and accounting practices.

Consider Voluntary Correction for Separate Issues

If the internal review identifies unrelated historical errors that have not yet been assessed, determine whether lawful corrective mechanisms are available.

Any corrective action should be based on a careful tax and procedural analysis rather than an indiscriminate admission of liability.

Foreign Investors Should Strengthen Pre-Acquisition Due Diligence

Before acquiring a Turkish company, foreign investors should review tax returns, audit history, tax litigation, public debts, related-party transactions, payroll practices, VAT positions, withholding taxes and major cross-border payments.

Material risks should then be reflected in the transaction structure.

Use Specific Tax Protection in the SPA

For significant acquisitions, relying solely on broad representations can leave avoidable uncertainty.

Tax indemnities, escrow arrangements, disclosure procedures, dispute-control provisions and survival periods should be negotiated according to identified risks.

Share Deals Require Historical-Liability Pricing

Where the same legal entity continues after closing, historical liabilities can affect the value of the shares acquired.

Tax risk should therefore influence valuation, purchase price and contractual protection before closing.

Immediate Action Plan After Discovering a Hidden Tax Liability

The buyer should immediately identify the tax and taxable period, obtain the assessment and audit file, protect administrative and judicial deadlines, determine whether payment or enforcement is imminent, notify the seller under the SPA, review tax warranties and indemnities, preserve the data room and due-diligence record, evaluate escrow or insurance recovery, investigate whether similar liabilities exist and coordinate the tax defense with any contractual claim against the seller.

Frequently Asked Questions

Who pays a tax liability relating to the period before a share acquisition?

The target company may remain liable to the tax administration because the legal entity continues after the shares are transferred. Whether the seller must ultimately reimburse the buyer or company is a separate contractual question.

Does changing the shareholders erase the company’s old tax debts?

Generally, a change in share ownership does not itself erase liabilities of the existing company.

Can a foreign buyer be personally liable for old company taxes?

Personal exposure depends on the company’s legal form, the person’s capacity, the type of public receivable and other statutory conditions. It requires a separate analysis.

Can a new director be pursued for historical tax liabilities?

The answer depends on the relevant liability framework, period, representative status and facts. Current management status alone should not automatically be equated with liability for every historical debt.

Can the buyer recover the tax from the seller?

Potentially, if the SPA, tax indemnity, warranties or other contractual provisions allocate the relevant liability to the seller.

What if the seller did not disclose an ongoing tax audit?

The buyer should review the warranties, disclosure letter, due-diligence responses and tax indemnity immediately. Non-disclosure may support a contractual claim depending on the transaction documents.

Should the company challenge the tax assessment even if the seller agreed to indemnify the buyer?

Potentially, yes. Rights against the tax administration and rights against the seller are separate. Tax litigation deadlines should not be missed while the parties dispute indemnification.

Can hidden tax liabilities affect the purchase price?

Potentially. Depending on the transaction documents, the liability may affect completion accounts, net debt, working capital or other purchase-price mechanisms.

What evidence should the buyer preserve?

The SPA, disclosure letter, tax indemnity, due-diligence reports, data-room documents, written Q&A, tax assessments, audit reports, accounting records and communications with the seller should be preserved.

What is the most important step after discovering a hidden tax liability?

Protect the company’s tax-defense deadline and the buyer’s contractual claim deadline at the same time. The tax administration’s claim against the company and the buyer’s recovery claim against the seller are legally distinct and should be managed in parallel.

Client-Focused Legal Support for Hidden Tax Liabilities After Turkish Company Acquisitions

Hidden tax exposure after an acquisition can involve corporate tax assessments, VAT, withholding taxes, related-party transactions, public-debt enforcement, director liability, seller warranties, tax indemnities and post-closing M&A disputes. Fırat Fesih Kaya Law Office assists foreign investors, shareholders and international companies dealing with undisclosed liabilities discovered after acquiring a Turkish business. Lawyer Fırat Fesih Kaya provides legal assistance in reviewing historical tax exposure, challenging tax assessments and enforcement measures, analyzing shareholder and director liability, enforcing SPA warranties and indemnities, and coordinating tax litigation with post-acquisition claims against sellers.

Phone: +90 312 434 22 22

Mobile / WhatsApp: +90 532 769 22 22

Email: info@firatfesihkaya.av.tr

Address: Mevlana Boulevard No:221, Yıldırım Tower, Office No:148, 06520 Balgat, Çankaya, Ankara, Turkey