The research aims to assess whether the government has been providing the necessary care to preserve the Fundamental Right to Data Protection of State of Alagoas taxpayers participating in the “Nota Fiscal Cidadã” tax-evasion prevention program. From the deductive and explanatory methods, through a qualitative profile of bibliographic review, the scope of protection of that right was examined, especially after the advent of the General Data Protection Law. It was possible to verify that the program has a deficit regarding the protection of the participants' personal data. The strengthening of the State's collection capacity is not exclusive to the necessary protection of personal data collected from taxpayers. It is necessary to make state activity compatible with respect for this fundamental right