How is the deduction carried out

• Deductions are made by including the deductible incurred contributions in the self-assessment of the period in which the incurred contributions meet all the requirements to be deductible or in the subsequent periods, provided that 4 years have not passed since the right was created.

  In the event of declaration of bankruptcy, the deduction of the supported contributions that were pending deduction prior to said declaration must be exercised compulsorily in the self-assessment corresponding to the liquidation period in which they were supported.

  If the aforementioned fees have not been included in the corresponding self-assessment, and provided that the period of 4 years has not elapsed since the right to deduct said fees arose, they may be deducted by means of rectification of the self-assessment relating to the period in which they were incurred.

  When the deductions exceed the accrued quotas, the excess can be offset in subsequent self-assessments , provided that 4 years have not passed since the submission of the self-assessment in which said excess originated.

  The taxpayer may opt for a refund when appropriate. Once the refund is chosen, it is not possible to offset it in subsequent self-assessments, regardless of the period in which the refund is made.

• When there is a requirement from the Administration or inspection action, only the fees recorded in the Registration Books are deductible in the applicable settlements. Unaccounted fees will be deductible in the self-assessment of the period in which they are accounted for or in subsequent periods. In both cases, provided that 4 years have not passed since the right to the deduction arose.

• The deduction must be made based on the foreseeable destination of the goods and services acquired , and it must be rectified if it is subsequently altered.