Onur Serakibi

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

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