Privacy Policy

1. Controller

Controller responsible for data processing on this website:

ak systems - A Koç
Tütüncüler Köyü
Tütüncüler Küme Evleri No: 36
53300 Pazar / Rize
Turkey

Email: ak@ak-pro.com
Phone: +90 530 161 56 09

2. Overview of data processing

DIVTAX-TR-DE is a tax calculator for simulating the taxation of a dividend from Germany for a user who is tax resident in Turkey.

3. What data we process

3.1 Data collected automatically when you visit

• IP address (temporarily in server logs)
• Date and time of access
• Browser type and version
• Operating system
• Referrer URL
• Language setting (EN/DE/TR)

3.2 Data collected through user actions

• Language preference (stored in session/local storage)
• Calculation inputs entered into the form during active use of the calculator

3.3 Not collected

• No account creation
• No personal data such as name or postal address through the calculator itself
• No payment information

4. Purposes of processing

• Providing the tax calculator
• Language switching (English/German/Turkish)
• Website performance optimization
• Error analysis and security

5. Legal bases

• Art. 6(1)(b) GDPR (use of the platform)
• Art. 6(1)(f) GDPR (legitimate interest in operation and security)

6. Retention period

• Server logs: 30 days, then automatic deletion
• Language settings: until manually deleted by the user or the session expires

7. Data sharing

7.1 Service providers

We use the following providers to operate the service:

• Hosting provider: Hetzner Online GmbH (Germany)
• CDN provider: jsDelivr (frontend assets)

7.2 External content

This project may include external links to legal or official sources referenced on the legal information page. When accessing this content, the privacy policies of the respective providers apply.

8. Cookies and similar technologies

8.1 Strictly necessary cookies

• Language setting (session cookie)
• Security-related session handling

8.2 Analytics cookies

This project does not intentionally use analytics cookies unless explicitly added and disclosed separately.

9. Your rights (GDPR)

You have the right to:

• Access to your stored data (Art. 15 GDPR)
• Rectification of incorrect data (Art. 16 GDPR)
• Deletion of your data (Art. 17 GDPR)
• Restriction of processing (Art. 18 GDPR)
• Data portability (Art. 20 GDPR)
• Objection to processing (Art. 21 GDPR)

Contact for privacy requests: ak@ak-pro.com

10. Right to lodge a complaint

You have the right to lodge a complaint with a competent supervisory authority.

11. Changes

We may update this privacy policy to reflect legal changes or changes to this project.

Last updated: March 19, 2026