The KSRTC operating expenditure increased substantially from the 11th plan to the 12th plan, with staff costs rising from Rs. 3102.01 crores to Rs. 7484.05 crores and material costs increasing from Rs. 2428.38 crores to Rs. 5308.36 crores. As a result, the total operating expenditure grew from Rs. 5864.89 crores in the 11th plan to Rs. 12792.41 crores in the 12th plan. However, operating revenue only increased from Rs. 5849.63 crores to Rs. 10235.82 crores over the same period, leading to an operating surplus turning into an operating loss of Rs. 2556