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आय प्रमाण पत्र ऑनलाइन आवेदन — बिहार आरटीपीएस सर्विसप्लस पोर्टल
Official procedure to apply for an Income Certificate (Aay Praman Patra) online at CO/SDO/DM level in Bihar.
Free of charge (Rs 0 on portal)
10 to 14 working days (As per RTPS service charter)
Both
Lifetime / State Rules
Digital Dwara aggregates information strictly from official government portals and gazette notifications. Application processing times and fee structures are governed by state public service guarantee acts.
Official Source: https://serviceonline.bihar.gov.in