Castellà (Castellà Fontes Assessors, S.L.P.) is a Barcelona advisory firm that says it has been providing tax, financial, employment and legal advice since 1963. The firm publishes contact details, business hours and transparency reports on its website and is registered in the Barcelona Mercantile Register.
For people moving to Spain or owning property here, the firm offers tailored services for non‑residents: analysis of tax implications, tax advice for non‑resident individuals and entities, assistance obtaining the NIE, handling tax residence changes, filing tax returns and legal representation before administrative bodies.



