- Directorate-General for Taxation /DGT
- Ministry of Economy and Competitiveness /MINECO
- Ministry of Finance and Public Administration /MINHAP
- National Innovation Company /ENISA
- National Statistics Institute /INE
- Official Credit Institute /ICO
- Spain Business Overseas /España Expansion Exterior
- Spanish Institute of Foreign Trade /ICEX
- Spanish Public Treasury /SGTPF
- Spanish Tax Authority /AEAT
