About BubbleTax
Professional accounting platform for international broker data
Who We Are

Thomas Ortmeier
Thomas is responsible for the complete tax logic at BubbleTax. He ensures that corporate actions, foreign currencies, funds, and securities transactions are processed correctly and that the results remain clearly comprehensible for users. His focus is on representing complex tax relationships in an understandable and reliable way.

Dominik Schröter
Dominik develops the technical platform behind BubbleTax – from the web presence to user guidance to robust processing of large data volumes. He ensures that the application is fast, stable, and easy to use, so that users can effortlessly obtain a complete tax report.
Together, we're developing a solution that makes tax-relevant data significantly simpler and more comprehensible for investors.
Our Origin – Born from a Practical Need
When you download your transaction data from Interactive Brokers, you quickly end up with hundreds or thousands of entries – from stocks to options to currencies. Many of them are complex, confusing, and barely cleanly presented in standard reports.
It quickly became clear to us:
No black box and no hours of Excel work. Instead, a transparent, clean platform that turns complex broker data into clear and comprehensible accounting information.
First, this became a small internal tool – then a solution for friends – and eventually it became clear how many investors face the same challenges.
That's how the idea became an independent company: BubbleTax GmbH. With the goal of making tax processes understandable, reliable, and as simple as possible for investors.
What BubbleTax Is Today
BubbleTax is a digital accounting platformthat automatically
- ✓organizes
- ✓categorizes
- ✓calculates
- ✓and comprehensibly prepares transactions from Interactive Brokers.
The result:
Clear and tax-usable accounting data, optimally prepared for tax returns.
BubbleTax is aimed at private investors in Germany who want to correctly record and transparently document their capital gains.
This way, you can confidently enter your tax information and know exactly how the numbers are derived.
Our Standards
An accounting platform must combine three things:
Precision
because every transaction must be correctly classified
Transparency
because users should understand what we do
Reliability
because large volumes of data must be cleanly processed
These three points are at the heart of our work.
Our software is designed to organize even complex broker data and generate clearly structured accounting information that investors need for their tax preparation.
Why BubbleTax Exists
Because investors need a tax solution that doesn't make broker data more complicated, but more understandable.
Because time is valuable.
And because there was previously no simple way to cleanly prepare the complex data from Interactive Brokers for taxes.
BubbleTax closes this gap – professionally, comprehensibly, and specifically for the needs of German private investors.