This text, with 41 formulas complete with grounds for appeal and argued with doctrine and case law, is intended to be an aid tool for all those involved in litigation with the Revenue Collection Agency. It analyzes, in general terms, the procedures for serving acts of the Revenue Collection Agency and its representation in court regarding the acts that are served. Then, the various remedies for the taxpayer are identified: petition for annulment in self-defense; petition for deferment of payment; legal suspension of collection; tax complaint; appeal to the tax judicial authority; and appeal to the ordinary judicial authority. With an operational slant, the various case histories divided into tax acts, precautionary acts and expropriatory acts are addressed. For each case history there is an analysis of the issue on the merits, the procedure, the case law interpretation and the acts already prepared with argued reasons to be adapted to the specific case.