The Operating Ratio for 2020-21 (The ratio of Total Working Expenses to Earnings) of Metro Railway, Kolkata is 678, which is higher than that of the previous two years. The operating ratio for 2020-21 has increased due to decline in earnings though expenditure for the year 2020-21 has decreased slightly in comparison to that of the last year. 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 | 2015-16 | 2016-17 | 2017-18 | 2018-19 | 2019-20 | 2020-21 |
| OPERATING RATIO | 238 | 260 | 278 | 248 | 216 | 678 |
