# 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 - Chatbot - Tax Return ## 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:** Conditional **On-prem / local hosting: indirect / not available** No on-premise, local, or self-hostable deployment of SteuerGPT was indicated on the website. **Private cloud / data center: partial** The website mentions German data centers and Buhl's own servers in Germany. However, a dedicated or tenant-separated private cloud architecture for customers is not indicated on the website. **EU SaaS / managed: covered** SteuerGPT is directly integrated into WISO Steuer and offered as a ready-made service. German data centers are mentioned for SteuerGPT; it is also stated that the applications do not leave the European legal area. **Hybrid: partial** The website suggests that data is stored on Buhl servers in Germany, while processing for AI functions is carried out by OpenAI Ireland as a processor. However, an explicit hybrid architecture for SteuerGPT is not described in detail. **DPA / Data Processing Agreement: partial** The terms and conditions state that, when personal data is processed on behalf of a customer, a data processing agreement is concluded in advance. In addition, the discoverable privacy policy for AI functions mentions a DPA with OpenAI including SCCs. A directly linked, SteuerGPT-specific DPA/Data Processing Agreement for customers to conclude was not indicated on the website. **No training: unclear** An explicit exclusion stating that prompts, uploads, chat histories, or outputs from SteuerGPT are not used to train general models was not indicated on the website. An opt-out option from AI training was also not indicated. **Open source / transparency path: unclear** Open-source components, open models, self-hostable parts, or a documented transparency path were not indicated on the website. **Data processing** The pages found suggest processing within the EU/EEA area with a strong Germany focus: SteuerGPT mentions German data centers and no departure from the European legal area; WISO Steuer mentions Buhl's own servers in Germany. In addition, an AI-related privacy passage can be found on the website in which OpenAI Ireland is named as a processor with DPA and SCCs. A complete, SteuerGPT-specific description of subprocessors, training use, and technical architecture was not indicated on the website. **Conclusion** For users in the European area, the data protection and hosting documentation is overall usable, but not complete. The best-documented status is EU-/Germany-centered SaaS with German data centers or Buhl servers in Germany and a DPA/SCC structure for AI functions. Due to missing, clearly SteuerGPT-specific information on subprocessors, training exclusion, certifications, and alternative hosting models, the overall GDPR assessment is **conditional**. **Sources** - [https://www.buhl.de/steuer/steuer-gpt/](https://www.buhl.de/steuer/steuer-gpt/) - [https://www.buhl.de/steuer/](https://www.buhl.de/steuer/) - [https://www.buhl.de/shop/datenschutz](https://www.buhl.de/shop/datenschutz) - [https://www.buhl.de/kanzlei/agb/](https://www.buhl.de/kanzlei/agb/) - [https://www.buhl.de/datenschutzerklaerung/](https://www.buhl.de/datenschutzerklaerung/) The website provides several strong data protection and hosting indications for use within the EU/EEA: according to the product page, SteuerGPT is operated in German data centers and does not leave the European legal area; the WISO tax page also mentions the company's own Buhl servers in Germany. At the same time, the privacy policy for AI functions available on the website refers to a transfer to OpenAI Ireland Ltd as a processor, including a DPA and standard contractual clauses. However, for SteuerGPT itself, no separate, fully elaborated section on subprocessors, data flow, training exclusion, or EU data residency at the component level can be found on the located pages. This makes GDPR-compliant use within the EU/EEA plausible, but only on the condition that the documented statements regarding processing by OpenAI Ireland and the European hosting information actually apply to SteuerGPT in this form. **Positive** Positively documented are a privacy policy on the Buhl website, statements about German data centers or the company's own Buhl servers in Germany, as well as a DPA/SCC statement for AI functions with OpenAI Ireland as a processor. In addition, the SteuerGPT page emphasizes that no personal data is used or analyzed and that the applications do not leave the European legal area. **Negative** Negative is that no separate, clearly SteuerGPT-specific section is provided on the located SteuerGPT pages regarding subprocessors, training use of the content, opt-out from AI training, certifications, on-premise/self-hosting, or open-source components. An explicit list of subprocessors named specifically for SteuerGPT was also not provided on the website. **Server location** The website states for SteuerGPT that the applications are operated in German data centers and do not leave the European legal area. The WISO tax page also states that the data remains on the company's own Buhl servers in Germany. Beyond that, no precise naming of individual data center locations or a detailed description of EU data residency at the component level is provided on the website. ## Hosting und Daten - **On-Prem / lokales Hosting:** unknown - **Private Cloud / Rechenzentrum:** teilweise / indirekt - **EU SaaS / Managed:** abgedeckt - **Hybrid:** teilweise / indirekt - **AVV / DPA:** teilweise / indirekt - **Kein Training auf Kundendaten:** unknown - **Open-Source / Transparenz-Pfad:** unknown ## Standort **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/