Before Taxfix, Lino Teuteberg and Mathis Büchi created Smallpdf, a tool for merging and compressing PDF files. They grew it into a profitable company without outside capital.
In 2016 they founded Taxfix in Berlin. The app turns the German tax return into plain questions on a phone. Teuteberg's part is the product, and his title is managing director for product.
In April 2020 Index Ventures led a $65 million Series C. In September 2021 Martin Ott became CEO and Büchi became chairman. Teuteberg stayed with the product. In April 2022 Taxfix raised $220 million at a valuation above $1 billion.
Funding then became harder. In May 2023 Taxfix cut 120 jobs, about 20% of staff. Across several rounds the headcount fell from over 500 to just over 300.