SECTION 3 - TAX CALCULATION
Chapter 1 - Taxable Income
Article 7
Taxable income is determined based on the gross income arising from all transactions executed by the taxpayer, after deducting allowable deductions and losses stipulated in this Article.
Allowable deductions refer to the expenses and costs incurred by the taxpayer that meet the following conditions:
They are necessary to achieve gross income.
They have been actually incurred and are supported by documentation.
They do not increase the value of fixed assets used in the activity.
They are related to the tax year.
The taxpayer may deduct losses incurred during the tax year from the net income of subsequent years.
All of this is as determined by the Regulation.