The author issued this study based on the current problem arised in the field of VAT administration and wants to solve the problems regarding the role of automated accounting information system on Value added tax administration in case of Ethiopian revenue and custom authority Kombolcha branch office by using four variables of AIS service quality, AIS system quality, AIS information quality and AIS user training . To the nutshell, at the end the research gave information to the authority regarding the positive role of Accounting information system on VAT administration.