Fare could be like 5% increase in base fare for all categories.
Passenger fare- Base Fare II Class
Fast Passenger- Present Base fare for express
Mail/express - Base + 15₹
Superfast- Base +30₹
Premium...
more... Train- Base+ Premium type Charges.
(Speed Categories Already changed in main Post)
Since these days Many Superfast running like Express speed & exp running at Fast Passenger speed due to 'n' number of reasons And passengers are being looted.