The 2025 tax return is due – but which software will save you the most time and money in March 2026?
In this comparison, two giants of the German market go head-to-head: the modern mobile-first challenger Taxfix and the long-standing market leader WISO Steuer from Buhl Data Service GmbH.
We analyze both tools across 11 categories, from AI support via SteuerGPT to suitability for complex cases such as crypto gains or rental income.
Taxfix
Taxfix is a mobile-focused tax app that guides users through their tax return in a chat-style format. Its core promise is maximum simplicity for employees and, since 2026, also for simple self-employed cases.
Gegr. 2016 · Berlin, Germany
WISO Steuer
WISO Steuer is the German standard for tax software, offering maximum depth for all types of income. It is aimed at users looking for a comprehensive, cross-platform solution with high levels of automation.
Gegr. 1986 · Neunkirchen, Germany
TL;DR
WISO Steuer wins the comparison clearly due to a superior value-for-money model (5 filings included), deeper AI integration (SteuerGPT), and coverage of all conceivable tax scenarios. Taxfix remains the king of user-friendliness for very simple cases on a smartphone.
Taxfix
Employees with simple tax cases who want to complete their return exclusively on a smartphone in under 30 minutes.
WISO Steuer
Families, investors, landlords, and the self-employed who need maximum refunds and full flexibility across all devices.
Feature Comparison
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Pricing Comparison
With its flat-rate model (up to 5 filings), WISO Steuer offers significantly better value for money than Taxfix, which charges per tax case. Taxfix is only attractive for absolute minimalists who want to use the expert service (€99.99).
Verdict
WISO Steuer remains the undisputed number one for German tax returns in March 2026. While Taxfix impresses with design and simplicity, WISO offers the deeper, cheaper, and technically more advanced overall package.
WISO is without alternative for freelancers who want to handle EÜR and VAT themselves.
WISO provides the necessary legal certainty and depth for founders with various income streams.
WISO scores with maximum data security and coverage of highly complex private asset structures.
Taxfix is the gentlest entry point, but WISO offers more long-term savings potential through better advice.
Choose Taxfix if...
You are looking for an extremely simple, guided solution, only own a smartphone, and have a standard tax case (employee) without complicated additional income.
Choose WISO Steuer if...
You are looking for the best value for money, have more than one person in the household, have complex income (stocks, crypto, rentals), or want to benefit from AI advice (SteuerGPT).
Taxfix is lifestyle, WISO is performance. For most users, WISO is the smarter choice.
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How This Comparison Is Created
Data researched from official sources and review platforms. AI assists with structuring and formatting. Scores are based on defined evaluation criteria.
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