# TaxGPT ## Kurzbeschreibung **"The AI for your tax return"** SteuerGPT is an AI-powered chatbot for tax-related questions within WISO Steuer. Users can ask questions in everyday language while completing their tax return; the AI explains matters, guides them to the appropriate input forms, suggests missing information, and helps them understand their tax assessment notice. ## Claim SteuerGPT: Your digital advisor - The AI for your tax return ## Geeignet für - Data Extraction / Document Analysis - Finance / Accounting - Law / Compliance - Taxes ## Kernfunktionen - Azure DE - Document analysis - Assessment review - ELSTER - Refund - Tax retrieval - Tax AI - Tax chat - Tax return - Tax Questions - Tax assistance - Taxy.io - WISO Steuer ## Preismodell - **subscription:** **Advantage Subscription:** According to the official WISO page, includes SteuerGPT as a personal AI advisor, technical hotline, tax coaching, automatic completion, and annual use in a subscription model. **Trial version: **Complete testing before submission. **Note:** No direct prices stated, as only model names and functions are documented here. - **other:** **Single purchase:** One-time license for one tax year with SteuerGPT and filing option. **Optional additional services:** ProfiCheck and buhl:Berater are offered separately via Buhl Steuerberatungsgesellschaft mbH; Buhl Data Service itself points out that it is neither obligated nor authorized to provide tax law assistance. ## DSGVO und Datenschutz **Gesamteinschätzung:** Yes **Overall assessment: ** A Germany-hosted SaaS/app model within WISO Steuer, not standalone LLM hosting. SteuerGPT does not run as a separate AI product, but directly within WISO Steuer. The hosting model is therefore tied to WISO Steuer web/app/desktop: use via browser, app, or desktop software with buhl:Konto; local self-hosting, an on-prem model, private cloud operation, or API access to SteuerGPT are not officially documented. Buhl states for SteuerGPT that no personal data is used or analyzed and that the applications are operated in German data centers. According to the provider, WISO Steuer itself stores data encrypted on Buhl servers in Germany; according to the FAQ, transmission and storage use HTTPS and AES-256. The buhl:Konto serves as the central login for WISO Steuer and other Buhl products; tax documents can be securely stored there. With tax retrieval, data such as wage tax certificates, pension, insurance, and other data stored with the tax office can be retrieved and automatically transferred into the tax return; this requires user authorization. Regarding deletion, Buhl states in partner FAQs that once the user has ensured data backup, the data can be completely and irrevocably deleted; no verified information is available on detailed retention periods specifically for SteuerGPT. Training on customer data: For SteuerGPT, it is officially documented that no personal data is used or analyzed; a complete public statement on training or non-training using non-personal AI interaction data could not be reliably found. **Conclusion: ** Hosting and data protection appear very strong for German private users, but SteuerGPT should not be understood as a freely controllable LLM system, but rather as an integrated AI assistant within the WISO Steuer infrastructure. Sources: SteuerGPT, WISO Steuer FAQ, buhl:Konto, tax retrieval, and data protection/deletion notices. [Privacy Policy](https://www.buhl.de/steuer/datenschutz/) **Overall assessment: **Well suited, with limitations for third-party data and professional use. SteuerGPT is integrated into WISO Steuer and offered by Buhl Data Service GmbH. **Positive** is that Buhl, as the responsible entity, is based in Germany and, according to its own privacy policy, complies with the GDPR. For SteuerGPT, Buhl explicitly states that no personal data is used or analyzed and that the applications are operated in German data centers; according to the provider, the data therefore does not leave the European legal area. In addition, WISO Steuer cites Buhl’s own servers in Germany, encrypted transmission and storage, as well as a zero-sharing policy with no sale or disclosure to third parties. **Negative** is: A specific, publicly detailed technical privacy description solely for SteuerGPT, including training logic, a list of subprocessors, and complete retention rules for AI interactions, is not reliably available in the sources reviewed. For cases in which Buhl is used as a processor and third-party data is stored on Buhl servers, for example in tax retrieval or tax submission, Buhl offers, according to tax support, a data processing agreement under Art. 28 GDPR. **Server location: **according to Buhl, German data centers or Buhl’s own servers in Germany. Conclusion: For private tax returns, SteuerGPT is strongly positioned from a data protection perspective; for business use, third-party data, or particularly sensitive scenarios, the data processing agreement, purpose limitation, deletion process, and specific processing within the application should be reviewed. Sources: Buhl SteuerGPT, WISO Steuer FAQ, Buhl Privacy Policy, and tax support information on data processing agreements. [Privacy Policy](https://www.buhl.de/steuer/datenschutz/) ## Hosting und Daten - **On-Prem / lokales Hosting:** unknown - **Private Cloud / Rechenzentrum:** teilweise / indirekt - **EU SaaS / Managed:** abgedeckt - **Hybrid:** teilweise / indirekt - **AVV / DPA:** abgedeckt - **Kein Training auf Kundendaten:** teilweise / indirekt - **Open-Source / Transparenz-Pfad:** unknown ## Herkunft **Land:** Germany **Taxonomie:** Germany Buhl Data Service GmbH, Am Siebertsweiher 3/5, 57290 Neunkirchen (Siegerland), Germany. ## Vorteile - Deeply integrated into WISO Steuer, no separate tool required. - Tax-specific specialization instead of a general chatbot. - Guides users to the appropriate sections in the tax return. - Can be used free of charge within WISO Steuer. - According to the privacy notice, data processing for SteuerGPT takes place via Taxy.io and Microsoft Azure in German data centers. ## Nachteile - Not available as a standalone SaaS/API tool. - According to the provider, AI responses may contain inaccuracies or errors and do not replace advice from tax experts. - Use is tied to WISO Steuer. - According to the FAQ, WISO Steuer is not suitable for persons with limited tax liability. - There is no publicly documented on-premise or open-source operation for SteuerGPT. ## Quellen - Offizielle Website: https://www.buhl.de/steuer/steuer-gpt/ ## Letzter Datenstand 2026-05-06 ## Originalseite https://kifox.ai/en/ki-tools/taxgpt-en/