The Operating Ratio for 2021-22 (The ratio of Total Working Expenses to Earnings) of Metro Railway, Kolkata is 431. The operating ratio of Metro Railway is higher than the All India figure since the maintenance cost in an underground service is much higher than over-ground Railway system. Metro Railway earnings mainly relates to passenger earnings and sundry earnings whereas in all Zonal Railways the bulk earnings comes from goods freight.
| OPERATING RATIO |
| YEAR | 2016-17 | 2017-18 | 2018-19 | 2019-20 | 2020-21 | 2021-22 |
| OPERATING RATIO | 260 | 278 | 248 | 216 | 678 | 431 |
