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Practical Manual of Companies 2021.

Chapter 13. Regime of joint taxation to the State Administration and to the Provincial Administrations of the Basque Country and/or Navarra

  1. Joint taxation by the State and the Provincial Administrations of the Basque Country and/or Navarra
  2. Calculation of the tax proportions of each Administration
  3. Joint taxation regime with the Basque Country and Navarra
  4. Completion of boxes 00050 to 00056
  5. Completion of boxes 00625 to 00629
  6. Completion of boxes 00420 to 00497
  7. Filing of Corporation Tax returns in cases of joint taxation