How BubbleTax Works
From XML file to fully traceable tax report – in just a few minutes
3 Steps to Your Tax Report
1. Export Your Data
Export your Flex Query as an XML file from your IBKR account. You'll find a step-by-step guide directly in BubbleTax.
2. Upload File
Upload the XML file to BubbleTax. Processing starts automatically – you get an instant free preview.
3. Download Reports
After reviewing, download two PDF reports: a tax summary with all values for Anlage KAP and a detail report with every single transaction.
What BubbleTax Calculates
BubbleTax processes all relevant data from your IBKR Activity Statement and automatically calculates:
Securities
- Stocks (buy/sell with FIFO)
- ETFs with partial exemption and Vorabpauschale
- Bonds and certificates
- Options (writing, buying, closing)
- Futures and CFDs
Income
- Dividends (domestic and foreign)
- Interest and accruals
- Withholding tax credits
Currencies
- Automatic ECB rate conversion
- Foreign currency gains and losses (FIFO)
- Multi-currency support
Special Cases
- Corporate actions (splits, spin-offs, mergers)
- Correct loss offset categories
- Direct mapping to Anlage KAP lines
Not Just Correct – Traceable
Other tools deliver numbers. BubbleTax delivers evidence. You receive two PDF reports you can present to the tax office:
- Tax summary: All values for Anlage KAP at a glance
- Direct mapping to Anlage KAP lines
- Detail report: Every transaction individually broken down with FIFO matching
- Traceable FIFO positions – which buy was matched with which sell
- Every number traceable back to the original transaction
See for Yourself
Upload your IBKR data and check the preview – completely free. You only pay when you want to buy the report.