Choose the filing route that actually matches your tax comfort level, language needs, and case complexity.
Decision Page
The right tool depends on whether you want English comfort, a phone-first workflow, a browser-based filing experience, or the fastest path from refund estimate to actual submission.
If your case is a normal employee return and you mainly want a good refund workflow, start with the EZ Navigator refund estimator and then move into filing software.
If you had foreign income, self-employment, rental income, stock plans, or multiple-country workdays, software still helps you prepare, but a tax advisor may be the safer filing route.
Start with Wundertax or Taxfix if you mainly want an English-friendly flow and a low-friction filing experience for a simpler return.
Use the refund estimator first, then move into smartsteuer if you are comfortable with a German-first flow and want a strong browser journey.
Wundertax and SteuerGo are easier starting points when you do not want to fight German tax vocabulary while filing.
Software can still help you prepare, but complex self-employment or international income cases often justify a tax advisor instead.
Start with Wundertax if the biggest blocker is language comfort and you want a filing product that feels expat-native from the start.
Move into smartsteuer when your refund estimate already looks worthwhile and your case still fits a standard employee filing path.
Read the tax-return guide first if you are still unsure whether your deductions, tax class, or work setup make filing worth the effort.
Wundertax is still the clearest fit if language comfort is the main thing stopping you from actually filing.
smartsteuer is a practical next step after the refund estimator, but it is still a German-first product and should be treated that way.
This comparison puts English-friendly tools first. When a partner page opens in German, that is stated clearly so you know what to expect.
Use this route if you want the cleanest path from a refund estimate into a real filing flow and your case is still employee-shaped rather than cross-border complex.
Open smartsteuer (German-first) →*You care most about an English-native expat filing experience and want a tool that feels explicitly built for expats and students.
Open WundertaxYou already know whether you prefer a simple app-style interview flow or a browser-based filing experience with a bit more control.
Open Taxfix| Tool | Best for | English support | What stands out | Watch-out |
|---|---|---|---|---|
| smartsteuer Best guided browser flow | Employees and straightforward expat filings | German-first product, but strong guided flow | One of the easiest browser-based routes if you already estimated your refund and want to move into filing. | Less ideal if you want a deeply English-native interface throughout. |
| Wundertax Best English-first expat fit | Employees, students, and expats who want a very English-native workflow | 100% English flow highlighted on the official site | The cleanest fit when language comfort matters more than squeezing every filing edge case. | Check pricing and scope first if your return includes more than a simple employee case. |
| Taxfix Best mobile-first experience | Simple employee returns and users who want an app-style guided flow | English available | Very approachable for first-time filers who want to answer simple questions and move on. | Best for simpler returns; more complex expat cases can outgrow it. |
| SteuerGo Best browser control + English | Users who want more control than an app, while staying in English | English browser workflow available | Strong middle ground between a simple interview flow and a more form-like browser experience. | Can feel a bit more manual than the most guided tools. |
Use the refund estimator first, then move into filing software only if the deductions look meaningful. That keeps the route practical rather than theoretical.
Software is great for standard employee cases. It gets weaker when your story becomes international, self-employed, investment-heavy, or split across multiple systems.
Use these guides first if you want to understand the German tax basics before choosing a filing tool.
We actively route people to smartsteuer when the case still looks employee-shaped and the user is past the refund-estimate stage. We keep the English-first tools visible because trust matters more than forcing one partner on every visitor.
If your case is a fairly standard employee return and you are comfortable with a German-first filing flow, smartsteuer is a reasonable tool to try after using the refund estimator.