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Practical manual for Income Tax 2023.

Keys to economic activities in personal income tax

Currently, the nomenclature that taxpayers must use to determine their type of economic activity varies from one tax return to another. Thus, until the 2021 financial year, in the personal income tax return the classification of these activities took into account the tax treatment that corresponded to each one based on whether it was subject to withholding or payment on account or the accounting and registration obligations of the owners of said activities, and differed from that offered, for example, in the Value Added Tax returns or in the census declaration of registration in the census of professional entrepreneurs and withholders, so that the same activity was recorded differently depending on the tax return in question.

In order to harmonize the nomenclature used for these purposes when completing the various tax returns, and thus responding to the request repeatedly made by the group of taxpayers who carry out economic activities, a new codification of the same was implemented in the 2021 Personal Income Tax return with the aim of progressively extending it to the other tax returns.

From this last perspective, since the 2021 financial year the declaration model distinguishes the following types and keys of economic activities in direct estimation: 

PasswordType of activity
A01 Urban real estate landlords
A02 Independent livestock
A03 Other business activities not included in other sections
A04 Professional activities of an artistic or sporting nature
A05 Other professional activities
B01 Agricultural activity
B02

Dependent livestock activity

B03 Forestry activity
B04 Punting mussel production
B05 Fishing activity, except production of mussels in rafts