₹14.40 crore has been approved for the operation and maintenance of Patna Metro. The metro will receive funds through BUCO; several things including tracks, stations, and signalling will be maintained.

The Bihar government has approved an additional amount of ₹14.40 crore for the operation and maintenance of the Patna Metro's priority corridors. This amount will be spent as a subsidy in the financial year 2026-27. The Urban Development and Housing Department has issued an order related to this. An estimated expenditure of ₹179.37 crore on two years and eight months of maintenance is expected for the operation and maintenance of the priority corridors, totaling approximately ₹179.37 crore over two years and eight months.