Which tax returns apply to my business in Spain?

What can the list show?

• Modelo 303, VAT (IVA) return, every quarter: Prepared here. And the yearly Modelo 390.
• A sole trader (autónomo): Modelo 130, Income tax instalment (autónomo), and the yearly Modelo 100. A company (SL): Modelo 200, Corporate tax return, and Modelo 202.
• Modelo 111 · 190: "Only if you pay salaries or professionals with withholding."
• Modelo 115 · 180: "Only if you rent business premises."
• Modelo 349: "Only if you sell to or buy from businesses in other EU countries."
• Modelo 347, for large customers and suppliers in the year.

Rows that start with "Only if" depend on facts Deline does not know, so check them yourself.

Why does it ask me to check something first?

Above the list Deline names what to settle before you rely on it, such as Tax details missing: "Add your tax number, legal structure and tax regime so this list fits your business." If your address is in the Basque Country, Navarre, the Canary Islands, Ceuta or Melilla, it shows Your region has its own taxes: "Your filings differ: please check them with an accountant."

Does the list show deadlines?

No. "For the dates, follow the tax authority's own calendar or ask your accountant." The Modelo 303 estimate in Accounting → Reports shows its own quarter.