Determination of Total Reduced Net Return
To determine the total reduced net income, the following reduction may be applied to the reduced net income of the activity calculated as explained in the previous section, the conditions, amount and limit of which are set out in Chapter 7:
Reduction for the exercise of certain economic activities for taxpayers with non-exempt income less than 12,000 euros.
Regulations: (Art. 32.2.3 of Law IRPF )