SuperTaxAgent vs WISO Steuer
SuperTaxAgent
github.comWISO Steuer
buhl.deSide by side
| Figure | SuperTaxAgent | WISO Steuer |
|---|---|---|
| Price from | Free | €3/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | — | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| Plans published | 1 | 6 |
| Spec score · Tax Software | 7.9 (#71) | 9.5 (#1) |
| Spec score · Personal Tax Software | 7.6 (#88) | 9.4 (#2) |
| Free plan | Yes | No |
| Intended users | The project describes itself as software for individuals preparing their own tax returns and says it is intended for self-preparation. | The maker describes the product as suitable for employees, self-employed people, retirees, landlords, families, and beginners. |
| Privacy | The project says tax profiles and calculations stay locally in a gitignored data directory and imported PDFs are never uploaded. | The privacy notice says personal data is not generally shared with third parties, with limited exceptions including service providers, legal requirements, or user consent. |
| Purpose | SuperTaxAgent is an open-source AI-powered tool for preparing US federal tax returns inside Claude Code. | WISO Steuer guides users through preparing and submitting German income tax returns. |
| Support | The maker lists an email address for collaboration, bug reports that users do not want to make public, and general contact. | The Vorteils-Abo includes a technical support hotline, and support requests can also be submitted through Buhl's ticket system. |
Plans
WISO Steuer
- TestversionFree
- Vorteils-Abo€35.99 a year
- Einzelkauf€45.99, paid once
- TestversionFree
- Vorteils-Abo€35.99 a year
- Einzelkauf€45.99, paid once
In their own words
SuperTaxAgent
SuperTaxAgent has no write-up on Specifiction yet; its figures are above.
WISO Steuer
WISO Steuer guides people through preparing and filing German income tax returns. Users can photograph wage statements and receipts for automatic recognition, and the software updates an expected refund estimate as information is entered. With consent, it can retrieve tax data such as wage-tax information from the tax administration. SteuerGPT answers tax questions in natural language, while Tax Banking can retrieve and categorize transactions when connected to a finanzblick account. Completed returns are sent electronically to the tax office using the official ELSTER interface. One license allows up to five returns, and eligibility is limited to people with unlimited tax liability in Germany. The software is available on Android, iOS, Linux, macOS, web, and Windows. A free test version allows all functions to be tried, with payment requested when submitting a return. The Vorteils-Abo costs €35.99 a year and renews automatically each November; Einzelkauf costs €45.99 a month, billed as a one-time purchase for a tax year. Buhl says data is stored on servers in Germany and protected with HTTPS and AES-256 encryption in transit and storage.