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- NIEForeigner identity number: fee, documents and steps
- Empadronamiento in BarcelonaRegister on the city's population register
- Cl@veOne login for Spain's online public services
- Digital certificate (FNMT)Who can get it and what it needs
- Register as autónomoDocuments, steps and what the contributions cover
- Autónomo: starting before you registerFines and the contribution base for late registration
- Autónomo and employee at oncePluriactividad and contributions in both regimes
- Digital nomad visaWho it is for, documents and steps