Gross Income is the total, without deducting any sum, of the taxpayer's income in money, in kind or in securities, consequently being included in said total the amounts received in respect of salaries, profits, leases, dividends, profits obtained in the alienation of movable and immovable property, bonds, shares and other securities issued by legal persons.
Deductible expenses or expenditures are understood as the expenses or expenditures incurred in the production of income and in the conservation of its source; consequently, those expenses, costs or losses generated or caused in businesses, industries, professions, activities or investments whose income is from foreign or exempt source will not be deductible, among others.
Expenses or expenditures such as donations to non-profit educational or charitable institutions of the country will also be deductible, as long as they are institutions previously approved for that purpose by the Ministry of Education, by the Ministry of Labor and Social Welfare or by the Ministry of Health as the case may be.
They are not expenses or expenses incurred in the production of the income or in the conservation of its source and therefore, the personal or subsistence expenses of the taxpayer and his family, the expenses incurred or paid by reason of construction or permanent improvements made to increase the value of any real or personal property.