Service Plus Bihar invites online applications for residential certificate, caste certificate, income certificate, character certificate, NCL and EWS certificate etc. Service Plus is single portal to access various services across the country. All interested citizens of Bihar state can apply online at Service Plus Bihar official website serviceonline.bihar.gov.in for Nivas Praman Patra, Jati Paraman Patra, Aay Praman Patra, Charitra Praman Patra, NCL and EWS certificates.