This research has aim to examine the effect of post-paid bill collection practice of EthiornTelecom, the only telecom service provider in Ethiopia. A sample of 173 were taken fromrnthe employee of Ethio Telecom, Billing and Credit Control Section and Bill complaintrnManagement section of customer service division and Billing operation section underrninformation system division. The methodology used for data collection was Questionnairernwhich is conducted on online bases to combat COVID-19 pandemic. Explanatory andrnquantitative research method was Employed to collect the data through questionnaire,rnaccordingly 148 respondents filled the questionnaire fully, which represented 85.54% ofrnthe sample size. The study adopted quantitative method and the descriptive as well asrninferential analysis has been done using SPSS Version 20. The major finding of the studyrnindicated that , The independent Variables, Issuance of Quality Bill, Billing andrnCustomer Care system, Collection Options, Debt control Management and DisputernManagement were positively and moderately correlated with dependent variable, Postrnpaid bill collection performance. From the regression analysis model summary resultrnindicated that the independents variables represented the dependent variable by 64.5%.rnGenerally, this report would identify the general issues of bill collection practice mainlyrnissuance of quality bill, Billing and customer care System, collection options, debtrncontrol management, dispute management and their level of effects and relationships onrnefficiency of postpaid bill of Ethio Telecom.