The 2026 Taxpayer Calendar: Key Tax Deadlines, Returns and Filing Obligations
The Spanish Tax Agency has made available on its official website the 2026 Taxpayer Calendar, a practical tool compiling the main tax filing deadlines applicable throughout the year for self-employed individuals, companies and private taxpayers.
Through this calendar, taxpayers may consult filing deadlines for tax returns, self-assessments and various tax forms, as well as practical information regarding tax procedures and recent fiscal developments.
Among the available sections are:
A particularly useful guide designed to help taxpayers avoid missed filing deadlines, last-minute tax complications and that familiar moment of checking the calendar only to discover that the relevant tax form expired “yesterday afternoon”. 📂⏳
All information may be consulted directly through the official website of the Spanish Tax Agency.