Background: Ethiopia has introduced community-based health insurance (CBHI) scheme tornenhance healthcare services utilization and protect the poor from catastrophic health expenditurernin 2011. Previous studies indicate that CBHI support the efforts being made to create access tornprimary healthcare services, a number of schemes are mostly constrained by low membershiprnuptake, high dropout rate and exclusion of the poor.rnObjective: - To assess of dropout rate and associated factors from Community-based healthrninsurance (CBHI) among informal workers in Gumbichu Woreda, East Shoa Zone, OromiarnRegion.rnMethods: Community-based cross-sectional study design was employed. Using interviewerrnadministered questioners to assess factors affecting dropout of CBHI in Gumbichu Woreda. Thernstudy participants were selected by using systematic random sampling technique. The samplernsize required for the study is 624.rnResults: The study found that educational statuses of respondents were found to be an associatedrnfactor for dropout of CBHI. Households who are illiterate were 2.174 times more likely to droprnout from CBHI than those who were secondary education and above, AOR = 2.174, 95% CIrn(0.906, 4.422). Socio-economic status of households also affect dropout. Household with wealthrnstatus of low income were 3.44 times more likely to drop out from the CBHI than those highrnwealth statuses, AOR = 3.44; 95% CI (1.344, 8.805). Households with middle income grouprnwere 1.238 times more likely to drop out than those high-income groups, AOR = 1.238; 95% CIrn(0.693, 2.213). Perceiving service quality is also reason and positively correlated with membersrnto dropout from their membership (r=0.297 at p=0.00). Limited scope of illness covered by thernscheme and distance from health facility are also reasons and positively correlated with membersrnto dropout from their membership (r =0.272 at p = 0.00) and (r = 0.117 at p = 0.0015).rnConclusion: This study brings reasons and factors for dropout of CBHI membership. It is foundrnthat education, socio-economic status, limited scope of illness, distance from health facility andrnquality of healthcare services were correlated with dropout of CBHI.