the relationship between the usefulness of information technology and availability component performance of levychange

this research is done to evaluating the relation between information technology (it) and efficiency of levy from tax payers in administration of tax affairs in yazd province. these researches are in type of solidarity research. statistical society of this research is total of employees in administration of tax affairs in yazd province. in this research, simple random sampling is used and with using from morgan table, 150 persons are chosen. for gathering data, two type of questionnaire related to it performance and efficiency of levy are used. it questionnaire is included from three components of accessibility, ease of use and usefulness and also efficiency of levy questionnaire is included from three components of affordable, achievement of goals and customer satisfaction. for analyzing the data is used from pierson correlation test and step by step regression analysis. the results showed that there is a significant and positive correlation between it and components of accessibility and usefulness and efficiency of levy. the results of step by step regression showed which it and two components of accessibility and usefulness could predict and explaining the changes of efficiency of levy. as a result, whatever the amount of usage from it in administration of tax affairs in yazd province become more then efficiency of levy will become more, but these changes are affected by new it methods.