Numonis Documentation

Tax and accounting guides

Practical guides about VAT, invoicing, deductible expenses, VeriFactu, and accounting for SMEs in Spain.

This section answers common questions from SMEs and self-employed workers in Spain, with practical explanations and links back to the information you may need in the Numonis platform.

Main topics

  • VAT and Modelo 303.
  • Invoicing and corrective invoices.
  • Deductible expenses.
  • Self-employed workers and limited companies.
  • VeriFactu and electronic invoicing.

Notice: this content is informational and does not replace personalized tax advice.

What Modelo 303 is and when it is filed

Clear guide for SMEs and self-employed workers about Spain's VAT Modelo 303: what it is, dates, who files it, and how to prepare it.

On this page

Main topics