Taxfix

Filing taxes in Germany is notoriously complex: lengthy forms, technical jargon, rules that change every year, and the persistent feeling of leaving money on the table by not knowing every available deduction. Taxfix set out to address this problem with a consumer-first approach: an app that guides users through their tax return with simple, plain-language questions — as if talking to a patient and always-available tax advisor. The mechanism is a guided interview. Instead of presenting users with blank tax forms to fill in, the app asks understandable questions — did you work from home this year? do you have dependent children? — and automatically constructs the return in the background. The algorithm identifies deductions and allowances the user didn't know they could claim, producing an average refund of 1,095 euros for those who file through Taxfix. For many users, that figure is the most tangible proof of the service's value. The German tax filing market encompasses tens of millions of potential users: salaried employees, freelancers, students with earned income — all subject to tax obligations that many fail to meet due to perceived complexity or fear of making mistakes. Taxfix has reached 6 million active users, a figure that reflects the product's ability to lower both the psychological and practical barriers to filing. Founded by Mathis Büttner and Lino Teuteberg, Taxfix operates on a freemium model: the app is free to download and use for return preparation, and a fee is charged only when the return is actually submitted. This lowers the adoption barrier further, allowing users to see their estimated refund before making any financial commitment. Expansion beyond Germany — into other European markets with complex tax systems — is the natural growth trajectory for a product that has demonstrated its ability to transform tax complexity into a manageable, and occasionally even satisfying, user experience.