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Step-by-step guideBizkaia Tax Office

How to register as self-employed in Bizkaia, step by step

Tax Office and Social Security at once: what to decide first, what gets filed and what happens next.

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In a nutshell

  • There are two registrations: the Bizkaia Tax Office and Social Security. They can be done at the same time.
  • First decide your activity, your start date, whether you have premises and how much you expect to earn.
  • Your Social Security registration must be done before you start working.

Becoming self-employed (autónomo) in Bizkaia means two registrations: one with the Bizkaia Tax Office (for your taxes) and one with Social Security (for your contribution and your pension). Both can be done at the same time, in a single online procedure, through a Punto de Atención al Emprendedor (Entrepreneur Support Point).

Before you start: what you need to decide

  • What you'll do: that gives you your IAE heading.
  • What day you start: the registration must be done by that day at the latest.
  • Whether you'll work from premises or with no fixed premises (from home, at clients' homes or online).
  • How much you think you'll earn a month: that's used to choose your contribution base and amount.
  • Whether you can apply for the flat rate (tarifa plana) and which mutual insurer (mutua) you want.
You don't need to know everything. If you don't know your heading or which VAT scheme applies to you, we suggest it from how you describe your activity.

The steps

  1. 1Choose your activityYou describe what you do and the IAE heading that fits best is chosen.
  2. 2Registration with the Bizkaia Tax OfficeYou're registered in the census and the IAE, with your VAT scheme and the address of your activity.
  3. 3Registration with Social SecurityYou're registered as self-employed with your contribution base, your mutual insurer and, if it applies, the flat rate.
  4. 4Sign and you're doneYou check the draft, sign the direct debit for your contribution and get the receipts.

After registering

You can invoice from day one. In Bizkaia invoices must be issued with software that complies with TicketBAI. Every quarter you'll file VAT and, if it applies, your income tax prepayment.

Watch the date. Your Social Security registration must be done before you start working. If you're late, there may be surcharges.

Frequently asked questions

Can I register with the Tax Office only?

Yes, if you already pay contributions some other way or your activity doesn't require it. That's what the "IAE registration with the Tax Office" procedure is for.

Do I need a digital certificate?

No. You give us permission once to deal with the Tax Office for you and we file it.

How long does it take?

Usually 1 to 3 days from when you give us your details.

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Self-employed registration: Tax Office and Social Security€99 + VAT · 1 to 3 daysSee procedure