# Reference

> Spanish and Basque terms, office addresses and the 2026 tax calendar.

- Page: https://autonomo.eus/parts/reference

## Pages in this part

1. [Look up a Spanish or Basque term](https://autonomo.eus/steps/glossary.md): Find the plain English meaning of the Spanish and Basque words used on forms, official portals and office signs.
2. [Find an office](https://autonomo.eus/steps/offices.md): Addresses, phone numbers, opening hours and booking links for the main public offices in Vitoria-Gasteiz, Bilbao and Donostia/San Sebastián.
3. [Check your 2026 tax deadlines](https://autonomo.eus/steps/tax-deadlines.md): See the 2026 tax filing dates in Álava, Bizkaia and Gipuzkoa for a typical autónomo who files VAT every quarter, and add them to your calendar with reminders.
4. [Check the 2026 figures](https://autonomo.eus/steps/figures.md): Every amount the guide uses in 2026, from the flat fee to the TIE fee, with its official source and the date it was last checked.
5. [About this guide](https://autonomo.eus/steps/about.md): Who writes Autónomo.eus and why, how each page is checked against official sources, and how to report a mistake.

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