Tax calendar of a carpenter in Bizkaia: the foral tax authority, Batuz and one employee

What they answer in the questionnaire

Jon (made up) runs a carpentry workshop in Getxo. He works with one employee, rents the workshop and withholds tax from the landlord, and invoices mostly private individuals. He is taxed by the Hacienda Foral de Bizkaia, which has its own forms and, with Batuz, the electronic record book.

• Works as self-employed (autónomo)
• Tax residence in Bizkaia
• VAT under the general scheme
• Income tax (IRPF) under simplified direct assessment
• Pays contributions as self-employed
• Has employees
• Rents premises and withholds tax from the landlord

The forms suggested, and why

Each form comes from an answer. The “why” column is what the app shows in the review, before anything goes into the list.

Their 2026, deadline by deadline

* Date worked out with the deadline rule, because the official calendar for that year has not been published yet. Check it when it comes out.

Before you copy it

This is an example with a made-up person. Your case may have exceptions that a questionnaire cannot see: Mis Obligaciones suggests and you review, and if you have someone who advises you, you show it to them.

Frequently asked questions

Official sources

Where what this page says comes from, consulted on the review date. If something does not match, the source prevails.

1. 2026 tax calendar for Bizkaia Diputación Foral de Bizkaia
2. 2026 tax calendar for Mainland Spain and the Balearic Islands Agencia Tributaria

Keep reading

• Examples7 made-up profiles and the 2026 calendar that Mis Obligaciones’s rules give them: self-employed under direct assessment and under modules, companies, the Canary Islands, Bizkaia and Navarre.
• BizkaiaThe 128 deadlines of 2026 in Bizkaia, month by month: the form, the period and the last day, copied from the official calendar. In .ics and .json.
• FormsGuides to 104 forms of the AEAT, the Canary Islands, the foral tax authorities and the Seguridad Social: who files them, their 2026 deadlines and their official links.