Xterna is a Barcelona-based consultancy (XTERNA Soluciones en Outsourcing S.L./S.L.P.) that provides tax, accounting, labour and corporate services for companies and individuals with international activity. The firm states it has been operating since 1996 and offers services both online and face-to-face. ([xterna.es](https://xterna.es/en/home/?utm_source=openai))
Their international practice explicitly mentions advice for expatriates, digital nomads and non-residents, management of international tax forms (for example Form 720), double-taxation treaty analysis and coordination with advisors in other countries. The site also states they speak English and Spanish and can arrange translations or assistance in other European languages. ([xterna.es](https://www.xterna.es/en/international-consultancy-barcelona/?utm_source=openai))
