The protection of taxpayers' rights is the foundation of modern tax law. This paper contains legal definitions of basic terms in the field of tax law, as well as rules of administrative and tax procedure and administrative dispute. The basic principles and provisions of the Constitution of the Republic of Croatia, on which other relevant regulations are based, are discussed in the introduction. One of the fundamental rights established by the Constitution of the Republic of Croatia is the right to equal treatment before courts and other state bodies and the right to appeal. We then define what taxes are - cash benefits and budget revenue, and then determine who the taxpayers are - all persons who are as such determined by the law governing a particular type of tax. Furthermore, we deal with the rules of administrative and tax procedure as they are regulated through the General Administrative Procedure Act and the General Tax Act. Here we establish that the taxpayer in the proceedings has the right to return to the previous state and extend the deadline for the performance of his obligation and that he is not obliged to perform the obligation if the tax statute of limitations occurs. The appeal in the tax procedure is regulated in the next part of the paper, together with other legal remedies, and we define when it can be filed, within what deadlines and the action of the competent authorities on the appeal. Other clarified legal remedies are an objection, renewal of the procedure, annulment of the decision and annulment and revocation of the decision. Then we talk more about the administrative dispute as a form of judicial control of an individual administrative act, or tax act. We define more precisely the subject of the administrative dispute, the court's actions and the legal remedies available to the party in the administrative dispute. Finally, we define tax advisory, the work of a tax advisor, and then we deal with the basic provisions relating to the Tax Administration, its structure and affairs, and the opinions it gives to taxpayers and to which it is bound to - the so-called binding opinions.