This calendar of tax liabilities has been prepared based on current tax laws and other regulations, in order to inform and facilitate compliance with the relevant tax regulations. Likewise, this calendar was designed taking into account the tax liabilities that have to be observed by taxpayers described as special, and those who have not been described as special by the Integrated National Service of Customs and Tax Administration (SENIAT), taking also into account the annual liabilities, the regular and irregular close of the tax year.