Upon service by the tax authorities of a preliminary deficiency assessment report, determining the deficiency tax ("Assessment Report"), the taxpayer has 15 business days to pay the deficiency tax voluntarily, as well as reduced fines and late payment interest. If the taxpayer decides not to pay the deficiency tax, it will have 25 business days from the expiration of the referred 15 business days to file written arguments and evidence against the Assessment Report (the terms are longer in case of transfer pricing audits). The tax administration must issue the Final Deficiency Assessment Resolution ("Resolution") and serve it to the taxpayer within one year after the expiration of the 25-day term mentioned above. The tax administration may follow abbreviated procedures in certain cases, in which it directly issues and serves the Resolution. The taxpayer may either pay the amounts set forth or challenge the Resolution. The taxpayer, within 25 business days of being served the Resolution, may: (a) file an administrative tax appeal before the tax administration; (b) file an administrative tax appeal with a subsidiary judicial tax appeal before the tax administration; or (c) file a judicial tax appeal directly with the tax courts. If the taxpayer files an administrative appeal or an administrative appeal with the subsidiary judicial tax appeal, the tax administration will have 60 calendar days to decide.
If the taxpayer files only an administrative appeal and the tax administration does not decide on it within the 60-day term, the taxpayer will have the option of either waiting for the decision indefinitely or considering that the tax administration tacitly denied its appeal and, therefore, filing a judicial tax appeal with the federal trial tax courts ("tax court"). The taxpayer must file such an appeal within 25 business days of the expiration of the 60-day term. If the taxpayer files an administrative appeal with the subsidiary tax appeal and the tax administration reaches no decision upon expiration of the 60-day term or decides dismissing the administrative tax appeal, the tax administration must then send the subsidiary tax appeal to the tax court.
Judicial procedure is:
Approximately, between seven to 12 years for a final decision by the Supreme Court of Justice.