Jan 31 (Reuters) - Paytm said on Thursday it expects a worst case impact of 3 billion rupees ($36.13 million) to 5 billion rupees to its annual earnings from Reserve Bank of India's order barring its unit, Paytm Payments Bank, from accepting fresh deposits from March.

($1 = 83.0350 Indian rupees) (Reporting by Kanjyik Ghosh; Editing by Arun Koyyur)