Next deadline: 26/10 · Reverse-charge VAT (KDV-2)
Beylikdüzü, Istanbul
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Accounting, tax, social security and company matters · Beylikdüzü, Istanbul

Accounting, tax and payroll: current information and calculators

The Beylikdüzü, Istanbul practice of Erkan Kodalak, Certified Public Accountant (SMMM). The site offers calculators based on 2026 legislation, the tax calendar, current parameters and articles linked to official sources.

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Quick calculation

Type an amount and see the result instantly.

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Numbers have a story too.We try to tell it plainly.

Where to start

Forming a company

Company types, documents, steps, timing and official costs under the Istanbul Chamber of Commerce 2026 tariff.

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Running a business

Bookkeeping, tax returns, payroll and social security obligations; the monthly and annual calendar.

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Investing in Türkiye from abroad

Tax number, company or branch formation, bank account, work and residence permits; information in English and Turkish.

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Upcoming deadlines

  • 26/10Reverse-charge VAT (KDV-2)Period: September 20262026-10-26
  • 26/10Withholding and social security returnPeriod: September 20262026-10-26
  • 26/10Withholding return (quarterly)Period: 2026 · Q32026-10-26
  • 26/10Stamp duty returnPeriod: September 20262026-10-26
  • 26/10Accommodation taxPeriod: September 20262026-10-26
  • 28/10VAT return and paymentPeriod: September 20262026-10-28
  • 28/10VAT return (quarterly)Period: 2026 · Q32026-10-28
  • 02/11Social security premium paymentPeriod: September 20262026-11-02
  • 10/11e-Ledger upload (income tax payers)Period: July 20262026-11-10
  • 16/11e-Ledger upload (other taxpayers)Period: July 20262026-11-16
  • 17/11Provisional tax return and paymentPeriod: 2026 · Q32026-11-17
  • 25/11Reverse-charge VAT (KDV-2)Period: October 20262026-11-25

Full tax calendar →

Topics

Company formationCompany formation · Limited company formation · Joint stock company formationAccountingBooks and e-Ledger · Accounting service and handoverTaxTurkish tax system · Tax returns · VAT and VAT refundsCorporate matters and advisoryTrade registry procedures · Restructuring · Acquisitions and due diligenceAudit and reportingAudit readiness · Financial reporting and internal controlHR and payrollPayroll and social security · Taxation of wages · Work permit applicationsLabour law in practiceWorking hours and overtime · Weekly rest and holiday work · Employment contractsInternationalForeign investors · Double taxation · Service exports

How we work

  1. First meeting

    We discuss the business's activity, size and obligations.

  2. Written engagement

    Scope and fee are set in a written contract in line with the professional fee tariff.

  3. Handover

    Books and documents are taken over and records are transferred to our system.

  4. Every month

    Returns are prepared according to the tax calendar; amounts payable are notified in advance.