A guide to tax forms for freelancers in Spain

The more common forms (modelos) that need to be filed for a freelancer are:

• Form 030 is filled by private individuals liable for tax payment to request the assignment of a tax identification number (NIF) when engaging in tax-related transactions.
• Form 036: Registration of a freelancer or company before the tax office. This indicates to the tax office that thge person or company will be engaged in professional activities or pay wages subject to withholding.
• Form 037: This is a simplified version of the Form 036 for those who fulfill certain requirements. This form is usually suitable for freelancers.
• Form 100: The annual income tax form for individuals. See our personal taxes page for more information.
• Form 130: Quarterly estimated tax payments for individuals.
• Form 303 and Form 390: The same as for corporate.