Onur Serakibi

Tax professional with 20+ years of experience in corporate taxation, tax audits, tax compliance, internal controls, and financial investigations.

Former Tax

Inspector at the Turkish Ministry of Finance and Sworn-In Certified Public Accountant (YMM) with expertise in tax certification, VAT refunds, tax risk assessment, and regulatory compliance.

Head of Tax & Internal Control - Acme Holding A.S. - Istanbul/Turkey

(2024-12 - 2025-07)

• Managed the accurate preparation and filing of Payroll & Withholding Tax, VAT & Withholding VAT, and Advance Corporate & Corporate Tax Returns for holding companies comprising 14 entities, three of which operated in the textile manufacturing sector.
• Reviewed and evaluated internal tax control systems to ensure compliance with applicable tax laws and regulations.
• Oversaw tax provisions and year-end tax accruals in close coordination with the accounting managers of group companies.
• Monitored and ensured group companies' compliance with evolving tax legislation, codes, and communiqués.
• Advised holding company executives on the tax implications of strategic initiatives.
• Ensured the accurate and timely processing of all accounting transactions and compliance with Turkish Generally Accepted Accounting Principles (GAAP).
• Monitored accounts receivable performance metrics to improve cash flow, maintain group companies' liquidity, and enhance operational efficiency.
• Ensured the accuracy of cost of goods manufactured calculations and depreciation & amortization expenses.
• Managed and led inventory audits to ensure compliance with internal controls and regulatory requirements.

Expert Witness at the Commercial Courts of Istanbul - Republic of Turkey Ministry of Justice - Istanbul/Turkey

(2022-11 - 2024-07)

• Prepared expert reports determining outstanding accounts receivable balances and calculating interest resulting from breached B2B agreements, and submitted them to the commercial courts of Istanbul.
• Prepared expert reports evaluating the tax consequences of capital reductions by joint-stock companies and submitted them to the commercial courts of Istanbul.

Founder | Sworn-In Certified Public Accountant - ISTTAX – Tax Certification & Advisory Firm - Istanbul/Turkey

(2019-01 - 2024-07)

• Conducted tax certification audits of companies and prepared detailed tax certification reports in accordance with the Turkish Corporate Income Tax Code.
• Certified the accuracy of corporate tax filings and financial information in accordance with Turkish tax regulations.
• Certified companies' VAT refund claims in compliance with Turkish VAT Code and Prepared VAT refund reports submitted to the tax administration.
• Advised clients on Turkish tax legislation and double taxation treaties.
• Reviewed and evaluated internal tax control systems to ensure compliance with Turkish tax legislation and minimize tax risks.
• Performed tax due diligence for mergers, acquisitions, and investments and evaluated tax exposures and contingent liabilities.
• Represented taxpayers before Turkish Tax Authorities and Supported companies in administrative tax disputes.

Tax Inspector - Republic of Turkey Ministry of Finance, Board of Tax Inspection - Istanbul/Turkey

(2003-07 - 2018-12)

• Conducted comprehensive tax audits of companies, gathered and evaluated evidence to support audit findings and prepared detailed tax audit reports in accordance with applicable tax regulations.
• Assessed tax liabilities and recommended adjustments based on audit findings and applicable tax regulations.
• Examined accounting records such as General Journals and ledgers, financial statements, and supporting documentation.
• Assessed taxpayer's compliance with Turkish tax legislation, accounting standards, and reporting requirements.
• Determined tax liabilities and proposed tax assessments when non-compliance was identified.
• Investigated suspected tax evasion, fraud, and abusive tax practices.
• Analyzed complex financial transactions to identify irregularities.
• Performed tax risk assessments to identify high-risk taxpayers and transactions.
• Interpreted and applied Turkish tax legislation and double taxation treaties to complex tax matters

MSc - Business Finance - Queen Mary University of London (2013)

Ma - Fiscal Law - Istanbul University (2012)

BSc - Economics - Mugla Sıtkı Kocman University (2001)