The present research work entitled "Level of Tax Culture and Financial Knowledge of the Workers of the Registration Zone No. IV - Iquitos Headquarters, 2021", was carried out with the objective of determining what is the level of Tax Culture and Financial Knowledge of the Workers of the Registration Zone IV Headquarters - Iquitos, 2021. For this, the type of descriptive research and Non-Experimental research design was used, 71 workers of the Registration Zone No. IV - Iquitos Headquarters were taken into account as a study population, to whom a survey was applied with the data collection instrument called a questionnaire; the work concluded that on average the workers have a low level of tax culture according to the results obtained; Regarding the level of tax culture, 33.8% had a high level of tax culture, 21.1% had a medium level and 45.1% had a low level, in terms of financial knowle...