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Practical manual for Income Tax 2023.

Article 35 LIS "Deduction for research and development and technological innovation activities"

Note: It should be noted that, in accordance with the provisions of article 68.2 of the Personal Income Tax Law , personal income tax taxpayers who carry out economic activities are eligible for the deductions for research and development and technological innovation activities of article 35.1 and 2 of LIS , with the exception of the provisions of section 2 of article 39 of LIS , that is, they may not, optionally, be excluded from the joint limit of 50%, nor apply said deductions with a discount of 20% of their amount when certain requirements are met or, finally, request, in the event of insufficient quota, its payment to the Administration under the terms determined by LIS .

The most relevant modalities and aspects to be examined in the deduction for research and development activities and technological innovation of article 35 of the LIS are the following:

  1. A. Deduction for Research and Development activities (art. 35.1 LIS)
  2. B. Deduction for technological innovation activities (art. 35.2 LIS)
  3. C. Exclusions and prior assessment of expenses