Annual Compliance Requirements for Foreign-Owned Companies in Turkey (2026)
Establishing a company in Turkey is just the beginning. Once your business is operational, maintaining compliance with Turkish regulations becomes an ongoing responsibility. Missing deadlines or failing to meet requirements can result in significant penalties, legal complications, and even business disruption.
This comprehensive guide covers all annual compliance requirements that foreign-owned companies must fulfill in Turkey, organized by category and timeline.
Overview: The Compliance Calendar
Turkish business regulations require companies to complete various filings, reports, and audits throughout the year. Understanding this calendar is essential for smooth operations:
| Period | Key Obligations |
|---|---|
| January | Previous year VAT reconciliation begins |
| February | Annual withholding tax declaration |
| March | Corporate tax return preparation begins |
| April | Corporate tax return deadline (25th) |
| May-June | General Assembly meeting (within 3 months of fiscal year-end) |
| Throughout Year | Monthly/quarterly tax declarations, SGK filings |
Tax Compliance Requirements
Corporate Income Tax
Annual Return (Kurumlar Vergisi Beyannamesi)
- Deadline: April 25th following the fiscal year
- Payment: In two installments (April and July)
- Rate: 25% standard rate (2026)
Foreign-owned companies must:
- Prepare financial statements according to Turkish Accounting Standards
- Calculate taxable income with allowable deductions
- Apply any available incentives or exemptions
- File electronically through the Revenue Administration (GİB) system
Value Added Tax (VAT)
Monthly Declarations
- Deadline: 24th of the following month
- Payment: 26th of the following month
Annual VAT Reconciliation
- Cross-check all VAT declarations
- Ensure input/output VAT is accurately recorded
- Prepare for potential tax audits
Withholding Taxes
Monthly Withholding Tax Declaration (Muhtasar Beyanname)
- Deadline: 23rd of the following month
- Covers employee salaries, rent payments, professional fees, dividends
Annual Withholding Summary
- Deadline: February of the following year
- Comprehensive summary of all withholdings
Stamp Duty
Applicable to various documents including:
- Contracts and agreements
- Financial statements
- Official applications
Companies must track and pay stamp duty on relevant documents throughout the year.
Social Security (SGK) Compliance
Monthly Declarations
SGK Monthly Premium Declaration
- Deadline: 23rd of the following month
- Payment: Last day of the following month
Required information:
- Employee headcount and salary details
- Working days and overtime
- Bonuses and additional payments
Annual Obligations
- Year-end reconciliation of employee records
- Verification of minimum wage adjustments (typically January)
- Update of employee categories and premium rates
Important SGK Compliance Points
- Timely Registration: New employees must be registered before they start working
- Accurate Reporting: Salary and working day information must be precise
- Record Keeping: Maintain employee files for at least 10 years
- Workplace Safety: Annual occupational health and safety audits
Corporate Governance Requirements
Annual General Assembly (Genel Kurul)
Deadline: Within 3 months of fiscal year-end (typically by end of March)
Required Agenda Items:
- Review and approval of annual financial statements
- Board of Directors discharge (ibra)
- Profit distribution decision
- Board member elections (if terms ending)
- Appointment of auditor (if required)
Documentation Required:
- Financial statements
- Board of Directors annual report
- Auditor’s report (if applicable)
- Attendance sheet
- Minutes of the meeting
Post-Meeting Filings:
- Trade Registry notification within 15 days
- Publication in Turkish Trade Registry Gazette
Board of Directors Meetings
- Minimum frequency as per articles of association
- Proper documentation and minute-keeping
- Signature requirements and quorum rules
Trade Registry Updates
Report changes within 15 days:
- Share capital changes
- Board member changes
- Registered address changes
- Company name or scope changes
- Signatory authority changes
Audit Requirements
Independent Audit Obligation
Companies meeting any two of these criteria for two consecutive years must have independent audits:
| Criteria | Threshold (2026) |
|---|---|
| Total Assets | TRY 150 million |
| Net Revenue | TRY 300 million |
| Employees | 150 average |
Statutory Audit
Even if independent audit is not required, certain companies must have statutory auditors:
- Joint Stock Companies (A.Ş.) with specific characteristics
- Companies with significant shareholder diversity
Audit Timeline
- Engagement: Early in the fiscal year
- Interim Reviews: Optional, typically quarterly
- Year-End Audit: January-March following fiscal year
- Report Delivery: Before General Assembly
Financial Reporting Obligations
Annual Financial Statements
Required statements:
- Balance Sheet (Bilanço)
- Income Statement (Gelir Tablosu)
- Cash Flow Statement (Nakit Akış Tablosu)
- Statement of Changes in Equity
- Notes to Financial Statements
Reporting Standards
- Large Companies: Turkish Financial Reporting Standards (TFRS) - aligned with IFRS
- Small and Medium Enterprises: BOBI FRS (local simplified standards)
- Micro Enterprises: Simplified accounting rules
Preparation and Approval
- Prepared by accounting department or external accountant
- Reviewed by management
- Approved by Board of Directors
- Presented to General Assembly
Employment Law Compliance
Annual Obligations
Disabled Employee Quota
- Companies with 50+ employees: 3% disabled workforce requirement
- Annual verification and reporting
- Penalty for non-compliance: Monthly fine per missing employee
Annual Leave Tracking
- Minimum 14 days for employees with 1-5 years tenure
- Maintain accurate leave records
- Unused leave accrual policies
Minimum Wage Updates
- Typically announced in December for January implementation
- Update payroll systems accordingly
- Recalculate SGK premiums
Workplace Regulations
- Annual occupational health and safety review
- Fire safety inspections
- Emergency evacuation drills
- Employee training records
Data Protection (KVKK) Compliance
Annual Requirements
Data Inventory Update
- Review and update data processing activities
- Document any new data categories
- Update data retention schedules
VERBIS Registration
- Verify registration is current
- Update if processing activities change
- Annual verification of accuracy
Privacy Notices
- Review and update employee privacy notices
- Update customer/vendor privacy policies
- Ensure consent mechanisms are current
Data Processing Agreements
- Review agreements with processors
- Ensure international transfer mechanisms are valid
- Update for regulatory changes
E-Document Compliance
E-Invoice (E-Fatura) Obligations
Companies exceeding TRY 3 million gross revenue must:
- Issue e-invoices to other e-invoice users
- Store invoices in the Revenue Administration system
- Maintain proper integration systems
E-Archive (E-Arşiv)
- Required for e-invoice users
- B2C invoice storage
- 10-year retention requirement
E-Ledger (E-Defter)
- Electronic bookkeeping requirement
- Monthly submission to GİB system
- Berat (certification) deadline: 3 months after period end
Sector-Specific Compliance
Manufacturing Companies
- Environmental impact reporting
- Waste management declarations
- Energy efficiency audits (large consumers)
Import/Export Companies
- Customs compliance verification
- Trade statistics reporting (INTRASTAT if applicable)
- Certificate of origin documentation
Technology Companies
- Software localization requirements
- Data localization considerations
- Cybersecurity compliance
Financial Services
- BRSA/CMB reporting requirements
- Anti-money laundering updates
- Annual compliance certifications
Penalties for Non-Compliance
Tax-Related Penalties
| Violation | Penalty |
|---|---|
| Late filing | Loss of tax benefits + interest |
| Non-filing | Up to 2x tax due |
| Incorrect information | Tax penalty + interest |
| Tax evasion | Criminal penalties possible |
SGK Penalties
- Late premium payment: Monthly interest + penalty
- Unregistered employees: Significant fines per employee
- Incorrect declarations: Administrative penalties
Corporate Penalties
- Late Trade Registry filings: Administrative fines
- Missing General Assembly: Board liability
- Audit non-compliance: Operating restrictions
Best Practices for Compliance Management
1. Establish a Compliance Calendar
Create a detailed calendar with:
- All filing deadlines
- Preparation time buffers
- Responsible parties
- Verification checkpoints
2. Engage Professional Support
Work with:
- Certified Public Accountant (SMMM): Tax and accounting compliance
- Legal Counsel: Corporate governance and contracts
- Audit Firm: Independent audit requirements
- HR Consultant: Employment law compliance
3. Implement Internal Controls
- Document all processes
- Segregate duties appropriately
- Regular internal reviews
- Management oversight
4. Maintain Organized Records
- 10-year retention for tax documents
- 10-year retention for employment records
- Proper electronic backup systems
- Secure storage for physical documents
5. Stay Updated
- Monitor regulatory changes
- Subscribe to professional updates
- Attend relevant seminars
- Maintain communication with authorities
Common Compliance Mistakes to Avoid
- Missing Deadlines: Set reminders well in advance
- Incomplete Documentation: Ensure all required documents are prepared
- Poor Record Keeping: Implement systematic filing systems
- Ignoring Small Obligations: Minor violations can compound
- Relying on Outdated Information: Regulations change frequently
- Underestimating Preparation Time: Start early
- Inadequate Internal Communication: Ensure all departments are aware
- Skipping Professional Advice: Complex matters need expert input
Compliance Checklist Summary
Monthly
- VAT declaration and payment
- Withholding tax declaration
- SGK premium declaration and payment
- E-ledger submissions
Quarterly
- Advance corporate tax payments
- Interim financial reviews
- Compliance status review
Annually
- Corporate tax return (April)
- General Assembly meeting (within 3 months of year-end)
- Trade Registry filings
- Independent audit (if applicable)
- KVKK data inventory update
- Employee record verification
- Disabled employee quota check
How FDI Consultancy Supports Your Compliance
Managing compliance across multiple areas can be overwhelming, especially for foreign companies unfamiliar with Turkish regulations. FDI Consultancy provides comprehensive support:
Compliance Management Services:
- Annual compliance calendar customized for your company
- Deadline tracking and reminder systems
- Document preparation and filing support
- Liaison with Turkish authorities
Professional Network:
- Vetted accounting and audit partners
- Legal counsel with foreign investment expertise
- HR and payroll service providers
- Industry-specific consultants
Ongoing Support:
- Regulatory update monitoring
- Compliance health checks
- Issue resolution assistance
- Annual compliance reviews
Conclusion
Compliance is not optional - it is essential for sustainable business operations in Turkey. Foreign-owned companies face the same obligations as domestic companies, with the added complexity of navigating an unfamiliar regulatory environment.
By understanding your obligations, implementing proper systems, and engaging professional support, you can maintain full compliance while focusing on growing your business. The cost of compliance is always less than the cost of non-compliance.
Need help managing your company’s compliance in Turkey? FDI Consultancy provides comprehensive compliance support for foreign-owned businesses. Contact us to ensure your company meets all regulatory requirements.