Open Tax Calendar
We are building the ultimate open source database for corporate Tax compliance deadlines.
Join the community and add your own brick to the adventure.
Easy access
Easy to access database for Tax obligations and due dates: dashboard, filters, reference to sources, completion scores, mesure of freshness and source comparison, regular automated updates.
Automation ready
Structured tax due date database for automated tax calendars: excel exports, API calls by any systems.
Customizable
Customized Tax calendar for an MNE! possibility to list the jurisdictions, end of fiscal years, financial thresholds per country to get calculated due dates per jurisdictions and entity types.
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Main contributors

Zhengxiao Ying
Data-scientist at Algonomia
R&D on calendar data-structure and generative AI automation