The official, however, did not rule out the possibility of approaching the Finance Ministry, if need arises.
Officials said the railway authorities held a meeting with representatives of employees' unions over issues related to the pay hike and hoped that there would be no disruption of services.
Railway and other central government employees have decided to go on strike from July 11 against the pay commission recommendations approved by the government on Wednesday.
Giving a break-up, he said around Rs 12,000 crore will be on account of wages, Rs 8,000 crore on account of pensions and the balance on account of various allowances.
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It will lead to deterioration in railways' operating ratio, the official said.
"Last year, we ended with around 90 per cent... This will deteriorate to 92 per cent. Railways will try to see whether it is able to raise the resources on our own. We have not so far approached the Ministry of Finance. If necessary, we will approach them for some assistance," he added.
"We are talking to them, we have had a few rounds of discussions already with them and we hope to find a solution. At this moment, I can only say that," he said.
The official also said that the railways is introducing a Customer Commitment Charter which will specify time-bound delivery of service. For instance, it would not take more than five minutes to procure a ticket at a station.